- test-drb@ccmp.vtda.org - classiccmp.org

by shoppa＠trailing-edge.com

n 12/20/2010 4:38 PM, Chuck Guzis wrote: > Something you don't see every day: > > http://www.ioffer.com/i/intel-paragon-super-computer-180057571 > > --Chuck The Paragon (and Delta before it - I was much more familiar with the Delta) represented the pinnacle in ultra-GFlop multiprocessing of the early 90's especially for "embarassingly parallelizable" code. If the compiler could make your code run and your problem fit into the memory space of a node, wow, the Delta was astonishingly kick-ass compared to anything else out there at the time. That said, it does not strike me as an especially "something to be run at home" machine. Those who want to do this at home are already doing BOINC with machines 2 decades newer or they have their own Beowulf cluster. This is the fickle world of parallel supercomputing. I think CHM has/had a nice Paragon on display and I recall seeing the cabinets and prominent nameplate of the Touchstone Delta. Tim.

15 years, 8 months

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more or less [OT]: A new standard for lists?

by tshoppa＠wmata.com

> Didn't Usenet die back in the late 1990s? Every September. Wait, is September 1993 over yet? Tim.

15 years, 8 months

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Columbus, OH

by legalize＠xmission.com

Anyone in Columbus, OH that could help me with a "pickup only" item on ebay? Please email me off-list. Thanks! -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 8 months

1
0
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AT&T 3B1 / 7300 / UNIX PC DMA Data LSI schematic

by classiccmp＠philpem.me.uk

Hi guys, I'm trying to track down a copy of the schematics (if any still exist) for the DMA Data LSI used in the AT&T Unix PC (aka the AT&T 3B1 or AT&T 7300). The Technical Reference Manual scans which were posted here earlier include the DMA Address LSI, but not the DMA Data LSI. Unfortunately about 80% of the DMA logic is in.... *drumroll*... the Data LSI. The Address LSI is basically a glorified presettable up-counter. These should be in the AT&T UNIX PC Technical Reference Manual, if anyone has a copy kicking around. I already have the DMA Address LSI, Video LSI, 512k Motherboard, 1MB Motherboard and 2MB Motherboard schematics. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

2
2
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Unknown TI logic series

by cc＠informatik.uni-stuttgart.de

Hi everyone, we've had a look inside our IME 122 calculator and discovered that it is full of SN14xx logic ICs. They are mainly from TI, but there are also some >from Motorola and others. It seems that they have the same function and pinout as the SN74xx parts but there must be a difference since the machine has quite a lot of SN1401 (the SN7401 is a quad open-collector NAND), but there are no pullup resistors anywhere! Some of the types are SN1400, SN1401, SN1474, SN1490; the ALU is made up of SN1482 and SN1483. Anyone knows this series? BTW the supply voltage is 5V. Christian

15 years, 8 months

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Uncommon: Intel Paragon on iOffer

by cclist＠sydex.com

Something you don't see every day: http://www.ioffer.com/i/intel-paragon-super-computer-180057571 --Chuck

15 years, 8 months

2
1
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Need help with Project Northstar/Data I/O System-19/ADM, Terminals (dwight elvey)

by melamy＠earthlink.net

The Northstar mother board uses 8251s which require CTS to be active in order for the usart to transmit. There are jumper headers on the motherboard that allow you to strap them so they are active by default so you can use just a three wire RS232 connection. regards, Steve Thatcher -----Original Message----- >From: "Robert J. Stevens" <trebor77 at execpc.com> >Sent: Dec 18, 2010 11:13 AM >To: cctalk at classiccmp.org >Subject: RE: Need help with Project Northstar/Data I/O System-19/ADM, Terminals (dwight elvey) > >Message: 15 >Date: Sat, 18 Dec 2010 06:46:57 -0800 >From: dwight elvey <dkelvey at hotmail.com>RE: Need help with Project Northstar/Data I/O System-19/ADM Terminals (dwight elvey) >Hi > It is unlikely that there is a problem with the 2708s If the programmer said they >were good, I'd expect them to be fine. > The places I'd look are first the RS232 connection. The fact that the canon >book works on one machine doesn't mean it will work on another. As well >as the data lines, there are handshake wires that need to have the right >levels. > He said that he'd single stepped the code, what were the results of >that? what did it do or not do right?? >Dwight > >It just goes crazy as the Prom was not burnt correctly >Bob > >Turns out that the Problem is that the Data I/O System-19 I am using doesn't want to load the Hex file as INTEL. It will only load a File if it is flagged as BINARY and that doesn't give a proper code Image. I am trying to get a fellow to see if his System-19 will load the file and burn the 2708 Properly then I can get mine Fixed I HOPE. >I also have been Re-Erasing the EPROMs as I go along. >Bob >

15 years, 8 months

3
2
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Bendix G-15 Diode Tester

by wdonzelli＠gmail.com

The Diode Tester unit for a Bendix G-15 very recently sold on Ebay. I would like to know who won it. Did anyone here? You can reply off list (I can be very discrete) - I have some questions to ask. -- Will

15 years, 8 months

1
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Sports! and Star Trek

by aek＠bitsavers.org

http://www.briancasey.org/artifacts/astro/moon.cgi just as I suspected, Full Moon

15 years, 8 months

1
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Service bureaus (Was: Tek 4051 firmware listing

by jonas＠otter.se

> I've always wondered what the Scandanavians do to differentiate 0 > from O from ?. They don't differentiate 0 from O- Although when I learnt Morse Code (at a Swedish Army facility) together with a group of radio amateurs in the 70s, we were taught to slash the zeroes (contrary to the IBM mainframe people) and write the Es as reversed 3s. And Swedes always cross the 7s. About the letter '?' in Danish and Norwegian, which is written '?' in Swedish (with the r?ck d?ts) and pronounced 'er', it is obviously differentiated from Oh and zero in everyday writing by the slash or dots. What the Danish or Norwegian radio amateurs or mainframe people do to resolve the conflict they might have there, I have no idea. /Jonas

15 years, 8 months

2
1
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IBM PC-DOS 1.0 question

by rich.cini＠verizon.net

All -- I?m working on a side project to another thing I?m working on and I?m trying to compare code from DOS 1.0 and 1.1. I have the PC-DOS 1.1 files (all including IBMBIO and IBMDOS) but only disk images (Teledisk) for PC-DOS 1.0. Is there an easy way to extract these files from the disk image? Does anyone have these files already extracted that they can send me? I think I can convert the TD0 image to IMD, but the IMD tools seem to work at the track level on the image and not the file level, but any help would be appreciated. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini

15 years, 8 months

2
2
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Service bureaus (Was: Tek 4051 firmware listing

by jonas＠otter.se

> And I have a model 33 teletype here, with some provenance claiming an > IBM lineage, that has a slashed-oh between the I and the P keys and an > unslashed-zero next to the 9 key. > > Pressing the slashed-oh, sends 0x4F and pressing the unslashed-zero > sends 0x30... and conversely, it prints an unslashed-zero when 0x30 is > sent to it and it prints a slashed-oh when 0x4F is sent to it... I just borrowed a book from 1974 about JCL by a person who had worked as a systems programmer at IBM. In his coding examples, he consistently puts a slash through the Ohs and leaves the zeroes unslashed. I would assume therefore that that was standard practice for IBM mainframe work at that time. /Jonas

15 years, 8 months

1
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Unknown TI logic series

by tshoppa＠wmata.com

> They are interesting, but no more than weird numbers on semicustom > devices. Motorola does the same thing, with their SC series of parts > (not MC or XC).. I tend to come in on this side too, these funny series are Effectively TI-supplied "house numbers". They may be different than stock SN7400 TTL or whatever DTL in minor or Major ways but that was an agreement between the customer and TI. I've seen the innards of DTL and TTL based calculators, and to think that They would work with rejects or floor sweepings is unreasonable. If Anything I would think that the house-numbered part would have some specs tightened And others loosened to produce something most manufacturable. And isn't That the reason for house numbers to begin with? (e.g. not purely obfuscation) Tim.

15 years, 8 months

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Unknown TI logic series

by tshoppa＠wmata.com

> but the speed, temperature range, etc. requirements for a desktop calculator are not that high. I think you (or maybe someone else) may have hit it earlier with the suggestion of fan-out/fan-in requirements and maybe some specializations such as open-collector wired-or with built-in pullups at the receiving end. Later 7400 series chips for specialized functions (e.g. verge of SSI and MSI) had not-really-TTL-compliant inputs and outputs for specialized daisy-chain or low-fanin-load purposes. Look at the BI/RBO pin of a 7447 etc. (It's an input AND an output! Wow!) It's easy to see how this could be applied to some of the "stock" standard logic functions to greatly cut pin counts for a desktop calculator, and I suspect that's what the unique numbers are for. Tim.

15 years, 8 months

3
2
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Symbolics MacIvory 2 with 16mw of RAM

by dbetz＠xlisper.com

Is anyone here interested in buying a Symbolics MacIvory 2 with 16mw of RAM? I bought this directly from David Schmidt of Symbolics a few years ago and haven't had much time to do anything with it. It came with a Macintosh Quadra 650 and a keyboard with a Symbolics overlay as well as documentation. It is all in working order. I'd like to find a good home for this. If you're interested, please contact me and make an offer. David says that the MacIvory 2 with RAM (maybe only 8mw) costs $999 from him right now so I don't expect to get that much. If you already have a Macintosh that will accept these boards (only the Quadra 650 or 900 I think) we can discuss buying just the boards and not the Quadra 650. That would make shipping much easier and less expensive. Thanks, David

15 years, 8 months

2
1
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PDP 11/24 and VAX 3500 available

by silvercreekvalley＠yahoo.com

Thanks for all the interest - the two systems went very quickly and have been collected.

15 years, 8 months

1
0
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OT: F/S: Lots of books about the history of science and tech

by evan＠snarc.net

I need money. Selling 53 books. These are all books about the history and impact of sci-tech. It's massively time-consuming and tedious to put a value on all of them. So instead I want to sell them as one giant lot. Most of these books are only a few years old and most are in excellent condition. Most of them I bought new. Some of them I bought used, and some have a few notes in them. I could probably make more by selling them individually, but as I said, I need $$ now (and I'm way too lazy to ship all these one at a time!) If anyone wants an instant library of history-of-technology books, this is a great starting point. Asking price: $350. (That's an average of just $6.60 per book. Some of these are worth a LOT more.) - 1491 - ISBN 1400032059 - Best of 2600 - ISBN 0470294191 - AC/DC: The savage tale of the first standards war - ISBN 0787982679 - Age of reconnaissance: Discovery, exploration, and settlement, 1450-1650 - ISBN 0520042352 - American telegraphy and encyclopedia of the telegraph - ISBN 1559181931 - Ancient inventions - ISBN 0345401026 - Blood: An epic history of medicine and commerce - ISBN 067941875X - Clean tech revolution - ISBN 006089623X - Miller's Collecting science & technology - ISBN 1840008490 - Crypto - ISBN 0140244328 - Does technology drive history? - ISBN 0262691671 - Edison: A life of invention - ISBN 0471362700 - Electrifying America - ISBN 0262640309 - German Enigma cipher machine - ISBN 1580539963 - Greatest inventions of the past 2,000 years - ISBN 068485998X - Ham radio's technical culture - ISBN 0262582767 - History of mechanical inventions - ISBN 048625593X - Information appliances and beyond - ISBN 1558606009 - Lincoln the inventor - ISBN 0809328976 - Longitude - ISBN 080271529X - Maps & civilization - ISBN 0226799743 - Map that changed the world - ISBN 0061767905 - Marconi's magic box - ISBN 0306813785 - Meaning in technology - ISBN 0262661209 - Measuring America - ISBN 0452284597 - Nothing like it in the world - ISBN 0684846098 - One good turn - ISBN 0684867303 - Pencil - ISBN 0679734155 - Power to the people - ISBN 0374236755 - Readings in cyberethics - ISBN 0763724106 - Riddle of the compass - ISBN 0151005060 - Science and the founding fathers - ISBN 039331510X - Science of measurement - ISBN 0486258394 - Science in nineteenth-century America - ISBN 0313331618 - Science of Star Wars - ISBN 0312263872 - Scientific instruments - ISBN 0520217284 - Scientific renaissance: 1450-1630 - ISBN 0486281159 - Social history of American technology - ISBN 0195046056 - Steam - ISBN 1422364402 - Structure of scientific revolutions - ISBN 0226458083 - Telephone gambit - ISBN 039333368X - Thread across the ocean - ISBN 0060524464 - Victorian Internet - ISBN 0802716040 - Voodoo science - ISBN 0195135156 - Visions of technology - ISBN 0684863111 - What Einstein didn't know - ISBN 0440508568 - What Einstein told his barber - ISBN 0440508797 - When old technologies were new - ISBN 0195063414 - Why people believe weird things - ISBN 0805070893 - Why things bite back - ISBN 0679747567 - Wilbur and Orville - ISBN 0486402975 - Wireless - ISBN 0262082985 - Writing implements and accessories - ISBN 0810320177 Obviously it would be expensive to ship these, so I prefer a seller in the northeast US.

15 years, 8 months

1
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Need help with Project Northstar/Data I/O System-19/ADM, Terminals (dwight elvey)

by trebor77＠execpc.com

Message: 15 Date: Sat, 18 Dec 2010 06:46:57 -0800 From: dwight elvey <dkelvey at hotmail.com>RE: Need help with Project Northstar/Data I/O System-19/ADM Terminals (dwight elvey) Hi It is unlikely that there is a problem with the 2708s If the programmer said they were good, I'd expect them to be fine. The places I'd look are first the RS232 connection. The fact that the canon book works on one machine doesn't mean it will work on another. As well as the data lines, there are handshake wires that need to have the right levels. He said that he'd single stepped the code, what were the results of that? what did it do or not do right?? Dwight It just goes crazy as the Prom was not burnt correctly Bob Turns out that the Problem is that the Data I/O System-19 I am using doesn't want to load the Hex file as INTEL. It will only load a File if it is flagged as BINARY and that doesn't give a proper code Image. I am trying to get a fellow to see if his System-19 will load the file and burn the 2708 Properly then I can get mine Fixed I HOPE. I also have been Re-Erasing the EPROMs as I go along. Bob

15 years, 8 months

1
0
0 0

6809, 6502, or 6802 computer

by lynchaj＠yahoo.com

_____ From: Andrew Lynch [mailto:lynchaj at yahoo.com] Sent: Friday, December 17, 2010 6:42 PM To: 'cctalk at classiccmp.org' Subject: 6809, 6502, or 6802 computer Hi, I just received some PCBs for a 6809, 6502, or 6802 computer. The ECB host processor can either be a stand alone computer with the IO mezzanine board Alternatively it be connected to the N8VEM backplane and rely on the N8VEM SBC for IO or do both simultaneously. The computer board supports 6809, 6802, or 6502 CPUs depending on builder preference. You set configuration jumpers for the CPU you select. The 6809 CPU configuration supports the CUBIX, the 6502 CPU supports DOS65, and for 6802 and/or the 6809 there is a FLEX port in the works. More information is available on the N8VEM mailing list and N8VEM wiki. Please contact me if you have questions or comments. Thanks and have a nice day! Andrew Lynch Hi! I've gotten some questions on the N8VEM 6809/6802/6502 computer. There is additional information available on the N8VEM wiki. Over time it has spread out over several folders as the project has evolved. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewAllObjects Please look in these directories for information http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=6502%20Host%20 Processor> &param=6502%20Host%20Processor http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=6809%20CUBIX%2 0-%20Stand%20Alone> &param=6809%20CUBIX%20-%20Stand%20Alone http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=M6802> &param=M6802 http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=m6809> &param=m6809 If you've got questions on the N8VEM 6809/6802/6502 computer please either ask me or better yet ask on the N8VEM mailing list. There is a lot of information on the mailing list in the archives. The 68xx/65xx hobbyist community seems rather sparse these days so hopefully this will spur some renewed interest. Thanks and have a nice day! Andrew Lynch

15 years, 8 months

1
0
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Need help with Project Northstar/Data I/O System-19/ADM Terminals

by trebor77＠execpc.com

I am trying to restore a N* Horizon,. So far I have got the ZPB-A2 CPU card working. I added the Prom Option and am using a 2708 EPROM with Monitor Code by Dave Dunfield. A Friend burnt the Prom for me but I has a problem and doesn't get the Keyboard Input. I have tried several times to Burn a new Prom with my D/I Sys-19 but they don't behave as they should. I have a SOL20 System/Bus Probe Card that single steps from the get go and I can step through the Code and see how it behaves in relation to the .lst listing. I have been using my Canon Book 10 running "TERM" to talk to the N*. It talks OK to the Sys-19 as well as other machines. I lost both of my Televideo 920/25's. I had three ADM LSI's in the Shed/Barn but the Field mice made their nests in two. The one that was untouched I brought in the Other day and It lights up the Mini-Tracker showing that the ADM is setup as DTE. But I get no response >from the Keyboard. Tried looping back 2-3 but no display. Don't see any Raster but the tube POPs up a spot when turned off. I am going to try to pull the Mother board out of the Other Micey ADM. Maybe I can swap the M/B's and see if that CRT is working. Same for the One still in the Barn. What would my chances be of soaking it and getting all the CRAP off it and having it WORK????? probably ZILCH. The third one is still in the Barn but Maybe it can be cleaned up. These terminals haven't been run since 1992. I also have a IBM 3101 a but so far all I found was the Base and CRT. The Keyboard must be in the Barn. Has anyone a spare Terminal. I'm thinking that maybe the Monitor code will work when attached to a REAL Terminal I bought about 5 2708's and If I can find someone who might load the New Code for me I could send them a 2708 and E-Mail the .HEX file. Bob in Wisconsin

15 years, 8 months

4
3
0 0

3B1 emulator: IT BOOTS! (sort of)

by classiccmp＠philpem.me.uk

They say "A picture says a thousand words"... well, here's a screenshot of the current version of FreeBee booting the System Loader and Diagnostics disc for the 3B1: http://i162.photobucket.com/albums/t242/philpem/Screenshot.png And for those who don't believe anything unless they see it moving: http://www.youtube.com/watch?v=Y0sRkJty6wo :) To make this work... * Install the LibSDL (Simple DirectMedia Layer) development libraries, and a C compiler. On Debian/Ubuntu, you want to 'apt-get install' build-essential and libsdl*-dev. You'll also want make, sed, awk and grep, which should auto-install when build-essential installs. On Windows, you're on your own (though a homebuilt SDL and mingw32 should work... in theory). * Grab the FreeBee source code: http://hg.philpem.me.uk/3b1emu/archive/tip.tar.bz2 And the ROM images: http://philpem.me.uk/code/3b1emu/3b1_roms.zip * Grab ImageDisk from Dave Dunfield's website, and the Version 3.51 Diagnostics Disk (.IMD file) from Bitsavers * Use Dosemu, DOSBox, or a conveniently located DOS or Windows box to convert the .IMD into a .BIN file: IMDU 01_DIAGS.IMD 01_DIAGS.BIN /B Copy the BIN file onto the Linux box. * Untar the tarball, and cd into the directory it creates. * make * Copy the disc image in here, and rename it to 'discim'. * Create a directory called 'roms', and unpack the 14C and 15C binaries (.bin files) into there. Rename them to '14c.bin' and '15c.bin' respectively. * Run: ./freebee * Watch the fun. No, the keyboard isn't emulated (yet), no the hard drive isn't emulated yet, and no, it doesn't boot past the RAM test screen... Keyboard is next on the hitlist, followed by interrupts, masking and the MMU/pagefault traps. I'm looking for other folks to help out with this -- a reasonably experienced 68K coder would be useful, or folks who know how the WD 1010 and 2797 Winchester and FDD controllers behave in 'real life' (unfortunately I don't have a 2797 to breadboard with). Enjoy! -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

10
12
0 0

PDP 11/24 and VAX 3500 available

by silvercreekvalley＠yahoo.com

I'm thinning down my collection and have a PDP 11/24 and a VAX 3500 available - free but collecton only (UK). The 11/24 could do with a clean, but it looks to be complete and has the often missing power key as well. Internally there are several cards. The VAX 3500 is in a desk side pedestal style case. It has wheels so can be moved. In nice condition cosmetically. No idea what cards etc are installed. Both units have never been powered up by me, and would need to be carefully checked, etc before powering up. Given away as is - for spares or repair. Collection only. Contact me by email if interested.

15 years, 8 months

5
4
0 0

Tek 4051 firmware listing

by aek＠bitsavers.org

>from microfiche http://bitsavers.org/pdf/tektronix/405x/fiche/4051_Firmware

15 years, 8 months

16
42
0 0

6809, 6502, or 6802 computer

by lynchaj＠yahoo.com

Hi, I just received some PCBs for a 6809, 6502, or 6802 computer. The ECB host processor can either be a stand alone computer with the IO mezzanine board Alternatively it be connected to the N8VEM backplane and rely on the N8VEM SBC for IO or do both simultaneously. The computer board supports 6809, 6802, or 6502 CPUs depending on builder preference. You set configuration jumpers for the CPU you select. The 6809 CPU configuration supports the CUBIX, the 6502 CPU supports DOS65, and for 6802 and/or the 6809 there is a FLEX port in the works. More information is available on the N8VEM mailing list and N8VEM wiki. Please contact me if you have questions or comments. Thanks and have a nice day! Andrew Lynch

15 years, 8 months

1
0
0 0

FYI: Soroc IQ 120 terminal manuals now on bitsavers

by legalize＠xmission.com

I just noticed this, but Al added them on Nov. 25th. <http://bitsavers.org/pdf/soroc/IQ_120_Operators_Manual.pdf> <http://bitsavers.org/pdf/soroc/IQ_120_Theory_of_Operation.pdf> Theory of Operation has all the schematics, parts lists, etc., that you would need in order to repair one of these puppies. I have one with a slightly damaged case that will need some refurbishing/checkout before I turn it on. Thanks, Al! -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 8 months

1
0
0 0

Tektronix graphics, NASA and FORTRAN‏

by rdawson16＠hotmail.com

Hi Gang, While surfing, I found a repository of NASA FORTRAN code from the NASA-COSMIC library. Lots of graphics in here as you could imagine, supporting Tektronix, PLOT10 and VT100 graphics terminals. As I know there are lots of geeks here, like me still interested in this sort of stuff. I have attached a abstract list of the code. Let me know if you are interested in any of this - it certainly has application or useful as learning material; for example the calculation of satellite trajectories for us AMSAT ham guys. You can certainly Google yourself, but the download for me was a bit tricky - requiring a linux box and the Subversion version control system. How can I push it up to Bitsavers? Randy

15 years, 8 months

3
2
0 0

Slashing the letter O (Was: Re: Service bureaus (Was: Tek 4051 firmware listing))

by derschjo＠mail.msu.edu

Interestingly enough, the Sharp PC-1211 (early basic programmable calculator) displays 'O' in a manner similar to what you describe. Zeros have no slash or other markings, but the 'O' has a notch in the upper right corner. See http://www.vintagecalculators.com/assets/images/SharpPC1211_1.jpg for an example. Josh -----Original Message----- From: Al Kossow Sent: Thursday, December 16, 2010 2:52 PM To: cctalk at classiccmp.org Subject: Slashing the letter O (Was: Re: Service bureaus (Was: Tek 4051 firmware listing)) There was an attempt at establishing what can roughly be described as an upside down Q for a slashed O. The only example I know of where someone used this are in line printer listings >from SDS in the late 60's. I would have to do some serious digging in magazines to find who was pushing this as a standard. They end up looking like misformed 8's. It does terrible things to OCR.

15 years, 8 months

1
0
0 0

When did RSTS/E get networking?

by legalize＠xmission.com

Either as an option from DEC or built-in. Which version? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 8 months

3
7
0 0

Free to good home: Ultra 1 and Ultra 5 (Montreal, McGill)

by joachim.thiemann＠gmail.com

Hi everybody, I have two Sun UltraSPARC machined to be picked up: a Ultra 1 (512 M RAM, with extra memory modules) and an Ultra 5 (also 512 M RAM). The 5 works for sure, runs NetBSD. These are for pick-up at McGill University in Montreal, contact me off-list if you want them. There might be a SS4 kicking around here as well to be gotten rid of. Contact me off-list. Joe. -- Joachim Thiemann :: http://www.tsp.ece.mcgill.ca/~jthiem

15 years, 8 months

1
0
0 0

apple Lisa2. One working!! - one to go?

by dm561＠torfree.net

Date: Tue, 14 Dec 2010 00:05:05 -0200 From: "Alexandre Souza - Listas" <pu1bzz.listas at gmail.com> Subject: Re: apple Lisa2. One working!! - one to go? > An example to ilustrate the talk: http://tabalabs.com.br/c64/sx > +++++++++++++++++++++++++++++++++++++++++++++++ > > Definitely interesting and somewhat relevant, but not quite the same > thing; that deals with the common problem of replacing 24pin 8K 23xx type > ROMs (or 68764/66 EPROMs) with a 27xx equivalent EPROM (with multiple > images in this example), whereas Tony was talking about replacing a 2716 > with a larger 27xx EPROM, not quite the same thing or adapter. Thanks Mike, but please, read again: > An example to ILUSTRATE the talk: http://tabalabs.com.br/c64/sx +++++++++++++++++++++++++++++++++++++++++++++++++ I've read it again, and I'd still say that although it's somewhat relevant it's not what Tony was talking about. Although the pictures and schematic illustrate the general idea of (badly) making this *kind of* adapter (try reprogramming that EPROM ;-), I think it would have been more useful to link to an illustration and schematic of what Tony was actually talking about, i.e. adapting a 2716 (instead of a 2364). You can buy those adapters for $5.00, by the way. Am I missing something?

15 years, 8 months

1
0
0 0

Unknown TI logic series

by tshoppa＠wmata.com

Brent wrote: > On 2010 Dec 10, at 2:36 AM, Christian Corti wrote: > > > > we've had a look inside our IME 122 calculator and discovered that it > > is full of SN14xx logic ICs. They are mainly from TI, but there are > > also some from Motorola and others. It seems that they have the same > > function and pinout as the SN74xx parts but there must be a difference > > since the machine has quite a lot of SN1401 (the SN7401 is a quad > > open-collector NAND), but there are no pullup resistors anywhere! > > Some of the types are SN1400, SN1401, SN1474, SN1490; the ALU is made > > up > > of SN1482 and SN1483. > > Anyone knows this series? BTW the supply voltage is 5V. > I can't find a reference for those numbers, and I haven't seen them > before, however I have seen TI inexplicably producing series identical > or similar to more-common series, but numbered differently. For > example, the SN3900 and SN4500 series are very similar to more-common > DTL series such as the 700/800/900 series, but I have never seen a > reference for the 3900 or 4500 series in TI databooks. One suggestion > might be they were a 'consumer-grade' series, a step below the standard > commercial-grade stuff. Remember this was the late 60's or early 70's, and the thought of 7400 as the "super series" with variants like 74L00, 74H00, 74S00 actually being inside the family had not quite taken over in the same sense that it did later, even inside TI. I don't think it's so much that the SN1400's/SN3900's/SN4500's were a step below commercial grade, but they probably had product-specific fanin/fanout/noise/current constraints and maybe even custom pinouts or built-in pullup variants in their specs. The 7400 "super series" of pin compatible parts in different speed/current/fanout levels organized by 74L00, 74H00, 74S00, 74LS00 with often identical pinouts was truly genius from a marketing-meets-technology point of view. Not too different than say the 9-pin dual triode with similar to identical pinouts but different gain variants (e.g. 12AU7/12AT7/12AX7) and a zillion commercial/aerospace/computer variants (e.g. 5814A, 5963, etc.) With regards to pinouts not everyone even inside a company had the same thoughts regarding pin locations for Vcc and gnd. TI did a pretty good job most of the time putting them at 7 and 14 or 8 and 16 for TTL which did simplify layout, but there are lots of exceptions even inside the TTL product space. And sometimes there were good reasons for the exceptions, other times I think it was just internal squabbling :-) You can see some of this playing out in TI's competitors logic families too, e.g. Signetics Utilogic with different subfamilies inside the Utilogic superfamily. Tim.

15 years, 8 months

4
5
0 0

apple Lisa2. One working!! - one to go?

by dm561＠torfree.net

Date: Sun, 12 Dec 2010 20:32:00 -0200 From: "Alexandre Souza - Listas" <pu1bzz.listas at gmail.com> Subject: Re: apple Lisa2. One working!! - one to go? > However, it's also quite easy to use a 2764 in place of a 2716 in the > actual machine. What I normally do is make an adapter that will plug into > the oriignal EPPROM socket and will tkae the 2764. Most pins just > connect across, you need to connect the higher address lines on the EPROM > to ground (do this on the adapter, of course). Then program the ROM image > into the first section of the larger EPROM, and it should work fine. An example to ilustrate the talk: http://tabalabs.com.br/c64/sx +++++++++++++++++++++++++++++++++++++++++++++++ Definitely interesting and somewhat relevant, but not quite the same thing; that deals with the common problem of replacing 24pin 8K 23xx type ROMs (or 68764/66 EPROMs) with a 27xx equivalent EPROM (with multiple images in this example), whereas Tony was talking about replacing a 2716 with a larger 27xx EPROM, not quite the same thing or adapter. mike

15 years, 8 months

2
1
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68k s-100 board was [Re Decent Motorola 68000 - 68010 book]

by lynchaj＠yahoo.com

Andrew, The douglasgoodall website required a log in before viewing. Status posted anywhere else? Thanks Rob -----REPLY----- Hi You can check the N8VEM wiki for schematics, PCB layout, and parts list. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%2068K%20 CPU> &param=S-100%2068K%20CPU Otherwise the status of the S-100 68K CPU board is we've got a team of builders schematic captured & reviewed PCB layout done and verified 5 PCB prototypes ordered prototype PCBs sent to builders lead builder is currently doing build and test project wiki set up various pieces of TUTOR 1.3 software gathered We are not done with build and test. No ETA. There are some minor changes and items found so far but nothing of consequence. No cuts and jumpers identified for the board. After prototype build and test is done, we are going to focus on the software. Probably custom test/debug/monitor EPROMs first, then TUTOR 1.3 with a goal of CP/M 68K (maybe) The plan is the PCBs will be available for $20 each plus shipping. They are for educational purposes only. No kits or pre-built boards. There is no ETA for the manufactured PCBs. That's about it. Thanks and have a nice day! Andrew Lynch

15 years, 8 months

1
0
0 0

Looking For MicroVMS Pre 4.6

by robert.jarratt＠ntlworld.com

Does anyone have any MicroVMS versions pre version 4.6? I'd love to find a version 4.1 if anyone has it. Regards Rob

15 years, 8 months

1
0
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Happy DEC-10 everyone!

by dseagrav＠lunar-tokyo.net

And remember, if it's not 36 bits, you're not playing with a full DEC!

15 years, 8 months

14
38
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Check your collections ...

by evan＠snarc.net

This weekend we had a holiday party for MARCH (Mid-Atlantic Retro Computing Hobbyists). At one point last night, several of us walked through our club's storage warehouse. Ian Primus discovered that we have a mostly complete Prime 6550 minicomputer. Apparently its racks have been sitting in our warehouse for five years, but they weren't arranged in the correct order, and I never realized they all go together to make one full system! So, check your collections .... one never knows what one might find among one's own collection after drinking a lot of beer and bourbon.

15 years, 8 months

5
4
0 0

another question about removing epoxy

by dgahling＠hotmail.com

I read the recent things about removing epoxy or other stuff gunked on components. I have two questions, I have an item with this stuff on it and I want to get it off, however, some of it is covering some of the chips, and I need to be able to identify the components. another worse problem is that one part of the circuit has a SIM card, which is also covered in white epoxy which I want to remove without damaging the SIM card. now the SIM card being encased in plastic means this is a whole lot of "fun" any suggestions?

15 years, 8 months

1
0
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Decent Motorola 68000 - 68010 book

by lynchaj＠yahoo.com

Decent Motorola 68000 / 68010 book? Keith Monahan keithvz at verizon.net <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20Decent%20Motorola%2068000%20 /%2068010%20book%3F&In-Reply-To=%3C4D059E20.3050300%40verizon.net%3E> Sun Dec 12 22:16:32 CST 2010 * Previous message: Decent Motorola 68000 / 68010 book? * Next message: mysterious 30 pin SIMMs * Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ________________________________ On 12/12/2010 11:15 AM, Philip Pemberton wrote: > Hi guys, > > Does anyone have any recommendations for a good book on the 68000/68010 > CPUs (covering assembly language, the programming architecture and the > interrupt system as a minimum)? -----REPLY----- I like 68000 Microcomputer Systems: Designing and Troubleshooting By Alan D. Wilcox http://www.amazon.com/68000-Microcomputer-Systems-Designing-Troubleshooting/ dp/0138113998 I contacted the author and received permission to make a PCB based on the 68K CPU board in the book. We are making an S-100 68K CPU board PCB based on the board described in the book. It is currently in build and test and the status is on the Douglas Goodall wiki. http://douglasgoodall.pbworks.com There is more information on the N8VEM 68K CPU board on the N8VEM wiki. Thanks and have a nice day! Andrew Lynch

15 years, 8 months

2
1
0 0

RCS Open House

by wdonzelli＠gmail.com

Mark the 18th of this month - next Saturday - for an Open House at the Retrocomputing Society of Rhode Island* at our millspace in Providence, RI. Last month we fired up an EAI TR-10 analog computer, and I suspect we will be doing the same this month, as well as possibly some work on a PDP-11/45 and a DEC Lab-K. Lots of super nerd geek talk as well. And possibly a fun dog. Generally, hours are 3 to 8 PM, with a dinner break around 6. The mill is located in the neighborhood of Olneyville, just a few miles from central Providence. For directions go to: http://rcsri.org/directions.html Ask if you need more information! *Not the Rhode Island Computer Museum aka RICM! -- Will

15 years, 8 months

1
0
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Decent Motorola 68000 / 68010 book?

by technobug＠comcast.net

On Sun, 12 Dec 2010 16:15:27 +0000, Philip Pemberton <classiccmp at philpem.me.uk> wrote: > Hi guys, > > Does anyone have any recommendations for a good book on the 68000/68010 > CPUs (covering assembly language, the programming architecture and the > interrupt system as a minimum)? > > [...] > -- > Phil. "Microprocessor Systems Design - 68000 Hardware, Software, and Interfacing" Alan Clements, PWS-Kent Publishing Company It appears that copies are available as PDF downloads from multiple sources... CRC

15 years, 8 months

1
0
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Decent Motorola 68000 / 68010 book?

by classiccmp＠philpem.me.uk

Hi guys, Does anyone have any recommendations for a good book on the 68000/68010 CPUs (covering assembly language, the programming architecture and the interrupt system as a minimum)? I'm trying to disassemble the AT&T UNIX PC Boot PROM and Loader, and figure out why the Loader doesn't seem to think my WD2797 emulation is providing valid data... As I said before, it's probing the FDC, reading either two or four sectors, then giving up and trying the HDD instead.... -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

2
1
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AT&T 3B1 / 7300 / UNIX PC: Boot sequence from floppy

by classiccmp＠philpem.me.uk

Hi guys, I've got my 3B1 emulator "mostly working" in that it runs the Boot PROM, sees the floppy disc in the drive, and proceeds to boot from it, getting as far as the Loader. When it gets to the Loader, I get the following display: AT&T UNIX(tm) pc Loader version 3.51 Copyright (c) 1985, 1986 AT&T All Rights Reserved Searching floppy disk... #### Searching hard disk... ... and it stops there. I can tell from the emulator log that it's trying to get the hard drive controller to read CHS 0:0:0 and DMA the data into RAM at 0x77830, but because the HDC isn't implemented, it locks. What I expected was for the Loader to pick up the boot files on the Diags disk, boot from that, and ignore the HDD. Does anyone know what "typical boot behaviour" is for a 3B1, 7300 or UNIX PC, when booted from the Diagnostics floppy (Foundation Set, disk 1) ? This is a bit of a head-scratcher -- I'm trying to figure out if there's a problem with my FDC driver (wouldn't be the first one) or the DMA/interrupt controller, or if the Loader really needs a hard drive controller (or a really good fake) to boot the system. I'd also really like to know why the DMA controller has two separate direction control bits -- DMAR/W- and IDMAR/W-... this seems downright silly, though in keeping with the rest of the TechRef. My "annotated edition" corrects about a dozen minor and major errors in the register set descriptions, and adds a bunch of informational sticky-notes and scribbly comments to reinforce certain points. Ewwww... If anyone's interested in playing with my emulator -- go to <http://www.philpem.me.uk/code/3b1emu/>. Hit the link under "Mercurial repository", then ".tar.bz2" to get a Tarball of the sources. Untar it. Grab the boot PROMs, and put them in a directory called 'roms' as '14c.rom' and '15c.rom'. Use IMDU (Imagedisk utility) on a DOS PC (or inside Dosbox) to convert the Foundation Set disks from IMDs to binary files, then copy the first Foundation disk (Diagnostics) as 'discim'. Compile (you'll need libsdl, aka the Simple DirectMedia Layer) and run. I know the code is a mess, patches to rectify this (or any of the other millions of bugs) would be almost certainly be accepted :) There's also no keyboard or mouse emulation yet, just the CPU, video, RAM, ROM and a basic memory mapper and DMA emulation. As for Ethernet emulation... that's on the "maybe later" list, right after "learn how to send and receive Raw Ethernet frames on Linux". Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

4
6
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mysterious 30 pin SIMMs

by rumi_ml＠rtfm.hu

Hello Everyone! I would like to identify some mysterious old SIMMs: - module P/N appears to be "PS 91/344J" - 30 pin, single sided, 9 chips "SIEMENS HYB514100BJ-60" - "MADE IN U.S.A." probably manufactured in 1994 I have failed to find explicit information about these chips, but I'd guess they are 1Mx4 so 9 of them would make a nice 4MB module with ECC/parity. What kind of machine could these have been made for? Thanks, Sab

15 years, 8 months

2
1
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S-100 and N8VEM pages

by lynchaj＠yahoo.com

Hi! Here are some links which may be useful to classic computer hobbyists. There is an announcements mailing list for S100computers.com and N8VEM S-100 boards http://groups.google.com/group/n8vem-s100 For those into social media, there exists "S-100 bus" page that you can "like" on facebook. http://www.facebook.com/pages/S-100-bus#!/pages/S-100-bus/132841730088337 There is also a newly created N8VEM page. http://www.facebook.com/pages/Homebrew-Computing-Project-N8VEM/1740728892846 08 Thanks and have a nice day! Andrew Lynch

15 years, 8 months

1
0
0 0

DEC Rack gallery?

by ethan.dicks＠gmail.com

Hi, All, I have had no luck googling any pictures of the short rack for the PDP-11V03 system (CPU + RX01 in a formica-topped office-friendly rack) that I *think* is called an H9610. For that matter, I was largely unsuccessful in finding pics of most DEC racks by rack part number (i.e., finding an 11/70 picture is easy - finding an H960 picture is not). Textual material for various rack configurations abound, but not pictures accessible by Google image search. If anyone knows of a gallery of rack pictures, I'd be grateful if you'd share the URL. Thanks, -ethan

15 years, 8 months

3
2
0 0

Parallel Dongles

by teoz＠neo.rr.com

Anybody know how to read an old parallel port dongle (Rainbow Tech Sentinel Pro) to find out what software/version it is for?

15 years, 8 months

2
1
0 0

1970s TTL specs

by thomas.gardner＠sbcglobal.net

> Subject: Re: 1970s TTL specs and prices > To: cctalk at classiccmp.org > Message-ID: <4D006B2A.5090407 at bitsavers.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 8/20/10 11:23 AM, Tom Gardner wrote: > > For some Computer History Museum work I need information on 7400 series > Flip > > Flops (S and Normal, DIPs) circa 1973 (anything 1970-75). Anyone have > any > > maximum clock speed and OEM volume pricing information on parts such as > 7473 > > thru 79 or 74106-116? > > > > At introduction (May 1966) The 7474 (25Mhz toggle freq) was $11.40, $9.10, > $7.70 > quantity 1/25/100, respectively > > The most expensive TI TTL part at that time was the 7491 9 bit shift > register at > $31.25, $24.85, $21.25 > > Their most expensive IC was the linear SN354A Demodulator/Chopper at > $145, $116, $99 > ------------------------------ There is a fairly complete set of IC Masters at the UC's Northern Reference Library Facility, Richmond CA, http://www.lib.berkeley.edu/NRLF/. They have a public reading room and will pre-pull material per an email request, nrlfreq at library.berkeley.edu. As it turns out I will be there next week doing some research on DRAM using all the IC Masters and can see what is in the 1973 version about various TTL. FWIW, I frequently use a learning (pricing) curve off a per 100 price to get a reasonable estimate of the high volume OEM price. You will have to justify the learning percentage (2% to 10%) and the OEM volume (multiple of annual volume of a high volume system?) to come up with a price. For example using the 1966 7474 at $7.70 with a 5% learning curve and a 100,000 OEM volume has an estimated OEM price of $4.60. You will have to do some research and thinking to come up with the values u use. Tom

15 years, 8 months

5
5
0 0

Wow! Lego Antikythera device -- and it works

by evan＠snarc.net

http://therawfeed.com/apple-engineer-re-creates-2000-year-old-greek

15 years, 8 months

6
6
0 0

Drive Type International Memories, Inc. (IMI) 5012H

by dm561＠torfree.net

Date: Mon, 06 Dec 2010 17:33:50 -0500 From: "Curt @ Atari Museum" <curt at atarimuseum.com> Subject: Re: Drive Type International Memories, Inc. (IMI) 5012H > Weren't IMI's used in much of the earlier Corvus drives too? Yes, in fact Corvus later acquired IMI AFAIK. Cromemco also exclusively used IMI drives with their WDI and WDI-II IMI controllers before they finally went to an ST-506 controller, both the large 7000 series and then the smaller 5000 series; note that the 5000s were available with either the 40-pin IMI interface or a standard ST-506 interface and the model numbers are not necessarily unique. mike

15 years, 8 months

9
14
0 0

Wow! Lego Antikythera device -- and it works

by feldman.r＠comcast.net

>Message: 26 >Date: Fri, 10 Dec 2010 00:27:09 -0600 >From: Doc Shipley < doc at vaxen.net > >Subject: Re: Wow! Lego Antikythera device -- and it works >Evan Koblentz wrote: >> http://therawfeed.com/apple-engineer-re-creates-2000-year-old-greek > >?? I thought the Antikythera Research Project decided a few years ago >that the original did NOT use differential gearing. > >?? To be perfectly honest, the fact that the Antikythera incorporates >the first known User Guide impresses me as much as the technology.... > >????????Doc > The report in The Register ( http://www.theregister.co.uk/2010/12/10/lego_computer/ ) includes some additional links, including one to an interesting article in Nature News from Nov. 24th at http://www.nature.com/news/2010/101124/full/468496a.html . Bob

15 years, 8 months

1
0
0 0

FFS: HP Memory Board D4262-60009 for LX Pro

by trag＠io.com

Anyone have a use for this? It is a memory expansion board of some kind >from a Netserver LX PRO. It has sixteen 72 pin SIMM slots. Not populated. HP D4262-60009 Free for cost of shipping from 78759 Jeff Walther

15 years, 8 months

2
1
0 0

Fwd: [GreenKeys] ATLANTIC RESEARCH DATA TECH DTS-1-M470/483

by jfoust＠threedee.com

Forwarded from the Greenkeys list. Looks like an interesting piece of test gear: http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=370462778137 - John From: "George B. Hutchison" <w7tty at olypen.com> To: "Don Robert House" <Packard42 at gmail.com>, <dhunter at islandregister.com> References: <4D001215.31954.3F92DD3 at dhunter.islandregister.com> <77B62C3F-03B0-47FD-8BC6-BFC1BF51B8DA at gmail.com> Date: Wed, 8 Dec 2010 22:14:21 -0800 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-osmtp-outbound-sender: w7tty at olypen.com X-osmtp-host: 65.243.191.51 X-osmtp-virus: clean Cc: greenkeys at mailman.qth.net Subject: Re: [GreenKeys] ATLANTIC RESEARCH DATA TECH DTS-1-M470/483 X-BeenThere: greenkeys at mailman.qth.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: "Discussion of older radio teletype $RTTY$ gear " <greenkeys.mailman.qth.net> List-Unsubscribe: <http://mailman.qth.net/mailman/listinfo/greenkeys>, <mailto:greenkeys-request at mailman.qth.net?subject=unsubscribe> List-Archive: <http://mailman.qth.net/pipermail/greenkeys> List-Post: <mailto:greenkeys at mailman.qth.net> List-Help: <mailto:greenkeys-request at mailman.qth.net?subject=help> List-Subscribe: <http://mailman.qth.net/mailman/listinfo/greenkeys>, <mailto:greenkeys-request at mailman.qth.net?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: greenkeys-bounces at mailman.qth.net Errors-To: greenkeys-bounces at mailman.qth.net X-Spam-Status: No, score=-2.6 X-Spam-Score: -25 X-Spam-Bar: -- X-Spam-Flag: NO That unit was one of the standard pieces of test equipment issued to all RCA Service Company Data Comm Techs. When RCA succumbed to GE, a lot of them just disappeared. I still have mine and it still works like a champ. If the manual didn't come with that one let me know and I'll haul my manual down to UPS and have it scanned into a .pdf. You can either use it as a loop keyer, or, if you need loop power, it will provide that as well. You can send distorted signals up to 44 per cent switched bias, and can measure incoming bias and distortion as well. I never left home without mine. There is a built-in FOX generator that will do baudot, ASCII, Teletypesetter, and EBCDIC. And you got a very good deal. A friend of mine traded a new, unfired .45 ACP Match Grade pistol for one, and both parties thought they got the better end of the deal. The Beer Cooler Accessory was extra, but otherwise they were a repairman's dream. W7TTY

15 years, 8 months

2
1
0 0

Fixing small plastic... things

by derschjo＠mail.msu.edu

Hi all -- Got myself a Friden 1162 desktop calculator. This is from about 1968-69 and has a neat-O keen CRT display and uses a magnetorestrictive delay line memory. Kinda cool. Mine has taken a fair amount of abuse over the years, and is currently not working properly -- at the moment it powers up (with nominal voltages, etc) and displays a normal display of all zeros, but as soon as a key is depressed, the screen goes blank and never returns. The 1162 has a rather interesting keyboard encoding mechanism (you can see a decent overview of the device & the keyboard mechanism here: http://www.oldcalculatormuseum.com/friden1162.html) Close investigation of the keyboard mechanism on my specimen reveals that a few of the plastic "fingers" that are positioned on the rods that move the magnets to/away from the reed switches have snapped off. I have a close up picture of what the fingers are supposed to look like at: http://yahozna.dyndns.org/scratch/friden/normal-finger.JPG And a picture of one of the broken ones at: http://yahozna.dyndns.org/scratch/friden/broken-finger.JPG The broken fingers no longer make contact with the mechanism, and so a couple of the reed switches do not get activated properly. I'm guessing that this is at least part of the reason the machine is acting the way that it is (that it's getting unexpected scancodes from the keyboard and going off into the weeds...) I need to figure out how to "recap" these fingers. I don't have a lot of experience repairing plastic stuff like this, anyone have any suggestions? Thanks! Josh

15 years, 8 months

10
22
0 0

Original HP Laserjet printer, free in Maryland...

by clay＠ArcherServices.com

I still have some parts for the original LaserJet. If I recall correctly, the engine was made by Canon and was also used in printers by other manufacturers like QMS and Canon. I installed & maintained quite a few of them. As far as collecting printers, I still have a few that are small enough to hold onto. I have a Kleinschmidt drum printer (1960's?) and an Axiohm aluminized-thermal printer from the late 70's. I had to give up all my Teletype's (ASR-33 and an older model) as well as a chain printer, Printronix line printer, and a wet-process "laser" printer from the early 70's (?) I think it was a Xerox. Just took up too much space. They are all a part of history; I hope someone out there is holding onto them. Clay --------------------------------------------------- Owned by a coworker of mine who says it still works fine. He doesn't want to throw it out if there is someone interested in preserving it. Somehow, I've never been interested in adding printers to my collection. In the "nostalgia era" of my computer experience, what I collect, printers were noisy, messy and not worth the bother. Anyway, if you want it and can arrange to pick it up fairly quickly, let me know. Bill

15 years, 8 months

5
9
0 0

MacOS 7.x problem

by snhirsch＠gmail.com

I was given a ZIP file that unpacks to two directories under MacOSX: Diagnostic1 MacUser All files are in pre-OSX "forked" format. I copied both resulting subtrees to a netatalk server and tried to access them from a 68k mac. For some reason, the second of these is visible under MacOS 7.x (tried several values of 'x')! The MacUser directory is fine - both data and resource forks are as expected. However, no matter what I've tried 'Diagnostic1' simply does not show up in the finder. I'm sure it's something basic, but I'm not much of an ancient Mac guru. Any ideas? Steve --

15 years, 8 months

3
7
0 0

1970s TTL specs and prices

by thomas.gardner＠sbcglobal.net

For some Computer History Museum work I need information on 7400 series Flip Flops (S and Normal, DIPs) circa 1973 (anything 1970-75). Anyone have any maximum clock speed and OEM volume pricing information on parts such as 7473 thru 79 or 74106-116? I must be getting old because I remember the 7474 well but I thru out my Yellow books years ago :-) Thanks Tom

15 years, 8 months

10
14
0 0

TRS-80 Model II Haul in York PA

by classiccmp＠vintage-computer.com

I was contacted many months ago by folks in York PA about a large TRS-80 Model II collection they need to get rid of. This includes several CPUs, hard drives, software, manuals and so on. Someone was supposed to collect this but has failed to do so and now the gear is in jeopardy of being scrapped VERY soon. If you can save all or part of this haul please contact me ASAP so I can put you in touch with the owner. This stuff should have been gone by the beginning of last month so time is critical to save it. -- Erik Klein www.vintage-computer.com www.vintage-computer.com/vcforum - The Vintage Computer Forums marketplace.vintage-computer.com - The Vintage Computer and Gaming Marketplace

15 years, 8 months

3
3
0 0

SCSI to IDE/SD community project

by lynchaj＠yahoo.com

Hi! I made this offer at Vintage-Computer.com forums and got some response so am also making the same offer on CCTALK. The following link is the design I referring to: http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=SCSI2IDE I am trying to decide what to do with the SCSI to IDE/SD project. I think it would be a good and helpful thing to have but recognize it may be too specific or overcome by events. If you are interested in buying a prototype board please contact me at mailto:LYNCHAJ at YAHOO.COM?subject=SCSI2IDE If there are 5 people interested I can get a batch of five PCBs made for $150 or $30 each. If there are 10 I think I can get the prototype board cost reduced to around $20 each. Please note if you buy a prototype board you don't have to actually build and test it. You can buy a board and have it sent to a volunteer builder for build and test. If the SCSI2IDE project is to succeed we have to get past the prototype board phase and into the hands of builders for coding. Obviously with prototype boards there are no assurances and you can expect there will be problems. We have to find those and fix them before a manufactured PCB is even a possibility. Thanks and have a nice day! Andrew Lynch

15 years, 8 months

1
0
0 0

SCSI on the small and cheap

by jws＠jwsss.com

Does anyone have experience or notes on the absolute minimum hardware to do parallel narrow (and slow) SCSI. Back in the early days, we were doing non arbitrated buses, and they are now essentially unsupported, and there are some more bits related to Attention that possibly has to be responded to quickly to keep from upsetting initiator stacks. However I would think a small circuit external to a small processor such as a PIC or AVR would allow one to fool most initiators, and do a simple device with SCSI on one side, and either ethernet or USB on the other, or even an SD ram part. The reset signal has some real constraints about getting the drivers off the bus really quickly, and that is one signal that can't be handled in software unless you have really fast response. Also there are some state transitions related to Reset that I think might have some issues. You would of course need to latch that a reset occurred and when your slow device got around to polling it it could handle that. Also when the states are decoded would not be too hard to record and latch. I just wonder if this would be less than the simple target circuits out there and would be very difficult to implement. The messaging and selection added some logic I have not studied in a long time such that there were some transitions that could not be easily handled either. Jim

15 years, 8 months

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HP 87 Keyboard parts (plungers)...

by clay＠ArcherServices.com

I recently acquired an HP 87 that I was able to repair, all except for a few sticking keys. From digging through the archives at this site and the HP-80 Series sites it seems the only way people have found to fix these is to cannibalize the plungers from other similar keyboards. Has anyone figured out a way to repair these cracked key plungers yet? I have tried a few things like gluing and wrapping and melting, etc, with little success. Does anyone know a source for these plungers? The HP part number 1535-4043 still comes up on HP parts site with no stock. Clay

15 years, 8 months

2
1
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Drive Type International Memories, Inc. (IMI) 5012H

by billdeg＠degnanco.com

The IMI 5012H is I am told a clone of the Shugart ST-512, which is a type 1 drive, can anyone confirm this? I am, working to resurrect an IBM AT. Silly me I disconnected the battery and lost the configuration settings. I attempted to run setup, but when I declare the drive to be type 1 (or 2), the system returns a 1780 error code (drive seek error)...which makes me wonder if this is not really a drive type=1. Thanks Bill Degnan

15 years, 8 months

4
9
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Excessive optimization (was Re: what was VMS/OpenVMS written in?)

by ethan.dicks＠gmail.com

On Wed, Dec 1, 2010 at 9:42 PM, Chuck Guzis <cclist at sydex.com> wrote: > The Microsoft issue, I recall was with dead code elimination. ?The C > expression > > ? ? ? ?while( C != 0); > > could normally be eliminated if C was 0... I have used the following in embedded code to tight-loop the CPU in certain circumstances, intentionally requiring a reset of the processor to escape... for (;;) ; I suppose a good optimizer would know that you really meant to do that and should produce something resembling the following $1: JMP $1 ...but I certainly wouldn't want that statement optimized out entirely. > The beauty of a good optimizer is that it allows one to write legible > code that still turns in good performance. Indeed. The horror of a bad optimizer (and I _have_ seen this) is that it introduces bugs that vanish when the optimizer is turned off. -ethan

15 years, 8 months

29
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apple Lisa2. Any advice on non-working floppy drives?

by terry＠webweavers.co.nz

I should add that these readings were taken while the machine was waiting for me to insert a disk (according to the screen icon). Actually a disk was already inserted. I also looked for any change in voltage on any of the pins when I clicked the icon to activate the drive. There was no change in any of the readings. Terry ----- Original Message ----- From: "terry stewart" <terry at webweavers.co.nz> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Sent: Wednesday, December 08, 2010 6:48 AM Subject: Re: apple Lisa2. Any advice on non-working floppy drives? > Hi Tony and others. Progress and pin readings from the Lisa 2 project... > > I've cleaned a couple of the 400k Drives thouroughly just in case the > machine was struggling with the mechanisms. No change. The drives still > sit there on boot in stubborn silence, although the LEDs inside are lit. > No sound or attempt at disk ejection when there is a disk present. > > I did some measurements on the Lisa Lite board input connector, and here's > what I found. I used the circuit diagram at > http://www.freeinfosociety.com/electronics/schemview.php?id=1417 . The > signals in brackets represent the corresponding pins on the sony floppy > drive. A disk was in the drive at the time. > > PH0 (CA0) - 0.2v but rises to 3.5v momentarily when the machine is first > switched on > PH1 (CA1) - 0,2v normally but every 4-5 seconds this pulses to 3.5v > PH2 (CA2) - Same as PH1 > PH3 (LSTRB) - 0.2v > WRQ (WRTGATE) - 4.9v > HDS (SEL) - 4.3v but pulses to 0.2 v every 4-5 seconds > DEN (ENBL) - 0.2v > RDA (RD) - 4.9v but pulses to 0.2 v every 4-5 seconds > WRD (WRTDATA) - 0.2v > MT (goes to Lite Adaptor circuitry) - 0.11 Returns to drive pin as > PWR - 3.6v > All 12v and 5v power and ground pins read what they should. > SNS - 4.9v but pulses to 0.2 v every 4-5 seconds > > I''m still digesting what this all means using the Lisa hardware manual > here > http://lisa.sunder.net/LisaHardwareManual1983.pdf . There is a > comprehensive explanation of how the drive interface works in section 6 > but I'm still digesting this and trying to get my head around it. > Appreciate that I'm not a techie and a lot of this stuff is new to me. > > As I see it at the moment, the drive is certainly getting power, and > appears to be getting signals. Whether these signals are the right ones > are another question? > > Terry (Tez) > > > ----- Original Message ----- > From: "Tony Duell" <ard at p850ug1.demon.co.uk> > To: <cctalk at classiccmp.org> > Sent: Monday, December 06, 2010 10:09 AM > Subject: Re: apple Lisa2. Any advice on non-working floppy drives? > > >>> >>> Tony, thanks for doing that bit of research. > ..... > ..... >>> I have a manual with some schematics and tonight I'll check and see if >>> the >>> LisaLite board is there. >> >> As I said a Google search found it fairly easily. The Lisalite board >> looks quite simple (the schematic is just 1 sheet, and I recognisd all >> the chips on it). I didn't do much more than glance at the schematic, but >> it seemed to be a dairly simple PWM generator using TTL coutners and '85 >> comparators. I think the control vaule is bit-serially loaded into a >> shift register on the board. >> >>> >>> >Firstly, since you have no idea as to the health of any >>> > of the parts, you can't deduce anything from the fact that swapping >>> > them >>> > out makes no difference. >>> >>> Not entirely true, as the Lisa 2 startup checks carry right through >>> until it >>> asks for a disk for inserted. So I can assume most parts are working. >> >> Can you? I have no idea what these startup checks actually test, but I >> would have thouht it as possible for one of the I/O chips that links to >> the drive to havee failed but in a way that it still passes the tests. >> >>> Incidently, the docs I have suggests this routine also checks the >>> LisaLite >>> controllers so (according to the machine anyway) these are ok. It's >>> hard to >> >> I wonder how? I couldn't see any way for the machine ot check that the >> PWM signal (the only signal truely sourced by the Lisalite board) is >> present and corret. >> >>> believe that THREE drives all have the same fault though. All inputs >>> into >>> the drive are from the LisaLite board. Maybe the diagnostic checks are >>> not >> >> Not really. While the only external cable from the drive does, indeed, >> plug into the Lisalite board, the shcmeatics show the most of the signals >> are simply passed (with no buffering or anything) between the 'Twiggy' >> connector back to the Lisa I/O board and the Sony drive connector. I >> think it's likely that any problems iwth those signals are not caused by >> the Lisalite board (broekn PCB tracks are not common). >> >>> as thourough as they should be. >> >> We don;t (or at least I don;t know) what hte diagnostics actually check. >> There's also the issue that you're using a defective system to diagnose >> itseld, and while most diagnostics are written assuming that anythign >> that hasn't been checked could well be defective, some are not. I've seen >> diagnostics that basically assume that the machine is working correctly, >> and which don't help _at all_ if there is a fault. >> >> I really do think you need to start making some measurements on the drive >> connecotr and see just what is, and is not, correct there. >> >> -tony >> >

15 years, 8 months

1
0
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ebay: TRS-80 Model 4 (NJ pickup) $0.01

by legalize＠xmission.com

Item # 260703951205 FYI -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 8 months

5
5
0 0

Drive Type International Memories, Inc. (IMI) 5012H

by billdeg＠degnanco.com

> > > > > The IMI 5012H is I am told a clone of the Shugart ST-512, which is a type 1 > > drive, can anyone confirm this? I am, working to resurrect an IBM AT. > > Silly me I disconnected the battery and lost the configuration settings. I > > Obvious question : Did it work before you disconencted the battery? In > other words do you know the problem is just due to misconfiguration? > Yes. It worked fine before I disconnected the battery. I assumed it was dead and I was planning on replacing it with a new one. > > There is a 3rd party setup program that will run on the real IBM AT (I > know this, becuase it's what I use on mine). I has the advantage that > when you select a particualr drive type, it displays the actual > parameters (cylinders/heads/etc) too. > > That way you could at least check you're selecting someting that makes sesne. > > Are you using the orignal IBM (Western Digital, actually) controller board? > Yes. original board. What I plan to do next is put the drive in an XT, because in an XT there is no battery needed and I can use spinrite to determine the drive number. It's possible given I was getting a 1780 error that there is a problem with both my controllers. Bill

15 years, 8 months

1
0
0 0

Original HP Laserjet printer, free in Maryland...

by wh.sudbrink＠verizon.net

Owned by a coworker of mine who says it still works fine. He doesn't want to throw it out if there is someone interested in preserving it. Somehow, I've never been interested in adding printers to my collection. In the "nostalgia era" of my computer experience, what I collect, printers were noisy, messy and not worth the bother. Anyway, if you want it and can arrange to pick it up fairly quickly, let me know. Bill

15 years, 8 months

1
0
0 0

SCSI to SD/IDE

by afra＠aurigae.demon.co.uk

Ok guys, The Good bit.... All this talk of SCSI to whatever got me curious so I started experementing. What I have so far : An AVR ATMega1284 (DIP40), connected to an SD card by SPI and to the SCSI bus via 4 LS chips (1xLS273 and 3xLS240). I currently have implemented just a few of the SCSI command set, Identify, read, write, test ready and request sense. Thist is enough to be able to connect to a PC SCSI card, format the drive and read and write files to it....heheh I can even boot off it ! I'm using Chan's FatFS, and in this way the drive seen by the SCSI is actually a large image file on the SD card, I did this as it will make backing up the drive *MUCH* easier if the target system is not a PC, as you can simply take the SD card out and copy the image file without worrying about it's internal structure. In theory this will also make sharing data between the target system and an emulation running on something more modern. There's a couple of pictures here : http://www.stardot.org.uk/forums/viewtopic.php?f=11&t=3646 The bad bit...... Whilst this all works it's SLOWWWW, using Norton utilities SI, reports that the disk is 0.2x the speed of an original PC, cirtainly bootup times are much more akin to what I would expect from a floppy drive :( So I would sugest that for replacing hard disks that using SCSI->SD is probably not going to be fast enough. My next experements are going to center on replacing the SD with an IDE drive, hopefully this will provide a suitable speed increse, asuming that this works it should be easy enough to use a CF->IDE adapter board to use a CF drive instead of an IDE, which will allow the media to be removable and easiliy swapable. The other thing I want this to support is 256 byte sectors as some old machines rely on this, a feature which is supported by some of the early SCSI/SASI to MFM/RLL boards but very few native SCSI drives, this would be of perticular intrest to some of the Acorn 8 bit machines. Comments & sugestions welcome. Cheers. Phill. -- Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric ! "You can twist perceptions, but reality won't budge" -- Rush.

15 years, 8 months

8
16
0 0

L6: Bell Telephone Laboratories Low-Level Linked List Language (film)

by legalize＠xmission.com

In 1966, Ken Knowlton created a 16-minute black and white film showing animated algorithms for the L6 language. Does anyone know if this film is online anywhere or if the film has been archived anywhere (CHM perhaps?). Bell Labs used to have a historian, but since Bell Labs no longer exists, I have no idea who to contact anymore about this sort of thing. Does anyone know? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 8 months

3
3
0 0

AT&T 3B1 / 7300 / UNIX PC: Boot sequence from floppy

by philpem＠philpem.me.uk

Hi guys, I've got my 3B1 emulator "mostly working" in that it runs the Boot PROM, sees the floppy disc in the drive, and proceeds to boot from it, getting as far as the Loader. When it gets to the Loader, I get the following display: AT&T UNIX(tm) pc Loader version 3.51 Copyright (c) 1985, 1986 AT&T All Rights Reserved Searching floppy disk... #### Searching hard disk... ... and it stops there. I can tell from the emulator log that it's trying to get the hard drive controller to read CHS 0:0:0 and DMA the data into RAM at 0x77830, but because the HDC isn't implemented, it locks. What I expected was for the Loader to pick up the boot files on the Diags disk, boot from that, and ignore the HDD. Does anyone know what "typical boot behaviour" is for a 3B1, 7300 or UNIX PC, when booted from the Diagnostics floppy (Foundation Set, disk 1) ? This is a bit of a head-scratcher -- I'm trying to figure out if there's a problem with my FDC driver (wouldn't be the first one) or the DMA/interrupt controller, or if the Loader really needs a hard drive controller (or a really good fake) to boot the system. I'd also really like to know why the DMA controller has two separate direction control bits -- DMAR/W- and IDMAR/W-... this seems downright silly, though in keeping with the rest of the TechRef. My "annotated edition" corrects about a dozen minor and major errors in the register set descriptions, and adds a bunch of informational sticky-notes and scribbly comments to reinforce certain points. Ewwww... If anyone's interested in playing with my emulator -- go to <http://www.philpem.me.uk/code/3b1emu/>. Hit the link under "Mercurial repository", then ".tar.bz2" to get a Tarball of the sources. Untar it. Grab the boot PROMs, and put them in a directory called 'roms' as '14c.rom' and '15c.rom'. Use IMDU (Imagedisk utility) on a DOS PC (or inside Dosbox) to convert the Foundation Set disks from IMDs to binary files, then copy the first Foundation disk (Diagnostics) as 'discim'. Compile (you'll need libsdl, aka the Simple DirectMedia Layer) and run. I know the code is a mess, patches to rectify this (or any of the other millions of bugs) would be almost certainly be accepted :) There's also no keyboard or mouse emulation yet, just the CPU, video, RAM, ROM and a basic memory mapper and DMA emulation. As for Ethernet emulation... that's on the "maybe later" list, right after "learn how to send and receive Raw Ethernet frames on Linux". Thanks, -- Phil. philpem at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

2
1
0 0

Free SCSI CD-ROM drives -- last stop before the dumpster!

by a50mhzham＠gmail.com

At 03:14 PM 12/4/2010 -0600, you wrote: >On Sat, Dec 4, 2010 at 2:39 PM, a50mHzHam <a50mhzham at gmail.com> wrote: > > WANTED: A good home for my last three RACK'O'CD boxes by MDI. > >I'd be interested if it's easy (which means no shipping). Where are >you located? > >brian Southeast Wisconsin-- Milwaukee metro area. ----- 350. [Computing] "Formal specifications yield correct programs." No. Formal specifications yield PhD theses. They may also occasionally yield programs as by-products, but no useful ones. --Ronald F. Guilmette --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB: http://www.mixcom.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

15 years, 8 months

1
0
0 0

SCSI to SD-IDE

by lynchaj＠yahoo.com

SCSI to SD/IDE Phill Harvey-Smith afra at aurigae.demon.co.uk <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20SCSI%20to%20SD/IDE&In-Reply- To=%3C4CFAF40D.30108%40aurigae.demon.co.uk%3E> Sat Dec 4 20:08:13 CST 2010 * Previous message: SCSI to IDE * Next message: SCSI to SD/IDE * Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ________________________________ Ok guys, The Good bit.... All this talk of SCSI to whatever got me curious so I started experementing. What I have so far : An AVR ATMega1284 (DIP40), connected to an SD card by SPI and to the SCSI bus via 4 LS chips (1xLS273 and 3xLS240). I currently have implemented just a few of the SCSI command set, Identify, read, write, test ready and request sense. Thist is enough to be able to connect to a PC SCSI card, format the drive and read and write files to it....heheh I can even boot off it ! I'm using Chan's FatFS, and in this way the drive seen by the SCSI is actually a large image file on the SD card, I did this as it will make backing up the drive *MUCH* easier if the target system is not a PC, as you can simply take the SD card out and copy the image file without worrying about it's internal structure. In theory this will also make sharing data between the target system and an emulation running on something more modern. There's a couple of pictures here : http://www.stardot.org.uk/forums/viewtopic.php?f=11&t=3646 The bad bit...... Whilst this all works it's SLOWWWW, using Norton utilities SI, reports that the disk is 0.2x the speed of an original PC, cirtainly bootup times are much more akin to what I would expect from a floppy drive :( So I would sugest that for replacing hard disks that using SCSI->SD is probably not going to be fast enough. My next experements are going to center on replacing the SD with an IDE drive, hopefully this will provide a suitable speed increse, asuming that this works it should be easy enough to use a CF->IDE adapter board to use a CF drive instead of an IDE, which will allow the media to be removable and easiliy swapable. The other thing I want this to support is 256 byte sectors as some old machines rely on this, a feature which is supported by some of the early SCSI/SASI to MFM/RLL boards but very few native SCSI drives, this would be of perticular intrest to some of the Acorn 8 bit machines. Comments & sugestions welcome. Cheers. Phill. -- Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric ! "You can twist perceptions, but reality won't budge" -- Rush. ________________________________ * Previous message: SCSI to IDE * Next message: SCSI to SD/IDE * Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ________________________________ More information about the cctalk mailing list <http://www.classiccmp.org/mailman/listinfo/cctalk> ________________________________ -----REPLY----- Huzzah! Good for you! Glad to see *something* coming out of all of this. Congratulations! Have a nice day! Andrew Lynch

15 years, 8 months

1
0
0 0

Atari SLM 804

by keylard＠ncidata.com

Could you let me know whether it comes with a manual and toner? What condition is it in? Much obliged, Robert keylard

15 years, 8 months

1
0
0 0

SCSI to IDE

by lynchaj＠yahoo.com

Hi! Thinking about this some more, we already have simple Z80 with RAM/ROM circuits and 8255 PIA for I/O including circuitry for 8255 to IDE. The only new element of this design would be converting a pair of 8255 PIAs to SCSI-2. Looking at a pin out of a SCSI-2 pin out of the 68 pins, 34 are grounds and a few more are power related. Basically it is about 30 pins which actually do anything and of those 24 are data lines. This does not appear to be a difficult interface to "bit bang" and would be somewhat akin to the 8255 to IDE circuits. Yes, performance would just OK and not fast. I think it would probably work and be fairly cheap to make. I am willing to support other approaches but would like to just help with the schematic capture, PCB design, and prototype board development. The key to success is to keep it simple and easily understood. Adding a bunch of unnecessary complexity just dooms the project IMO. Please contact me if interested. Thanks and have a nice day! Andrew Lynch

15 years, 8 months

37
97
0 0

SCSI to IDE

by trag＠io.com

>Date: Fri, 03 Dec 2010 19:13:08 -0800 >From: Eric Smith <eric at brouhaha.com> >Dyslexia strikes again. I thought you were looking for the 85C30, not >the 53C80. Sigh. > >I doubt that anyone makes the 5380 or 53C80 anymore. Not quite the 53C80, but perhaps the next best thing: I have three 53C94 and three 53CF94 in 84 pin PLCC packages which I will happily ship (for free) to anyone who wants to dabble on this project. They are untested, and I'm looking at my inventory trying to figure out whatever possessed me to buy them in the first place. Perhaps I got them with a larger lot. I only ask that you actually be about to experiment before you ask me to send them to you. It's too easy to acquire stuff with the intention of doing a project and then for various reasons never do it. I also have a brick of 660 NCR 53C96 chips. Unfortunately, these are a (IIRC) 100 pin QFP (30 X 20?), which is more difficult to work with than a DIP or socketable PLCC. I am reluctant to open the (sealed) brick to pull out one or two, but if someone wants to develop this project with the 53C96 in mind I'd be happy to supply 53C96s for the production at a nominal cost; certainly no more than $1 per chip. Again, not quite sure what I was thinking when I bought them.... If these are usable and not too modern for this project that should help keep the cost down as compared to paying $5 - $10 per SCSI chip. Finally having a written inventory really helps to bring home all those items that I just can't imagine any realistic future use for.... I put the datasheets for the AMD 53C94/96 and the 53CF94/96 as well as the Zilog 53C80 up at: <http://www.io.com/~trag/DataSheet/> Jeff Walther

15 years, 8 months

1
0
0 0

SCSI to IDE

by lynchaj＠yahoo.com

SCSI to IDE Alexandre Souza - Listas pu1bzz.listas at gmail.com <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20SCSI%20to%20IDE&In-Reply-To= %3C04B9CB3C0CBB4169A8660B24014CB7FB%40portajara%3E> Sat Dec 4 14:50:26 CST 2010 [snip] Time to define DOWN TO EARTH specs and begin working :) Greetings from Brazil, Alexandre SOuza [snip] Alexandre, The work on a SCSI to IDE and SD bridge has already started. I have a schematic, parts list, and PCB layout ready for prototype board up on the N8VEM wiki. Check out the thread on vintage-computer.com forum. It has the Z80 controller, Z53C80, and IDE plus the SD interface. An 8 MHz Z80 will push the data plenty fast enough for early microcomputers. We've seen it first hand with XT-IDE board, the N8VEM DiskIO board, and the S-100 IDE interface. Connect an IDE to CF adapter and it will be a fast drive on most any vintage system. Low cost commercially available SCSI to IDE bridges are already available for those with Ultra-SCSI and later so there is no need to help them. I think the need is for the older SCSI format which *classic* computers use, not the fancy modern stuff. An Ultra-SCSI interface does no good for an early microcomputer with a SCSI-1 interface which I think should be the "classic computer" audience since they need a SCSI to IDE bridge the most. The mailing list is called "CCTALK" for a reason. That's what's pretty much the only thing done here. I agree with your sentiment -- I to would like to see less "talk" and more "do". Don't listen to the naysayers or those who set unrealistically high expectations but refuse to actually do anything except complain. I've been offering to help design a KiCAD schematic and/or PCB board and/or prototype PCBs based on *anyones* design since the start of this thread and have only gotten flamed and ignored. Maybe you'll have better luck. Andrew Lynch PS, if you are planning to offer a PCB or kit, I advise you not use SMT or you'll be assembling nearly all of them yourself. A lot of hobbyists especially those with diminished vision struggle with even DIP/PLCC soldering and SMT parts will just make you the assembler as well as the designer.

15 years, 8 months

2
1
0 0

Fw: [Amateur-repairs] Computer drives

by pu1bzz.listas＠gmail.com

----- Original Message ----- From: <ma.locksmith at juno.com> To: <amateur-repairs at yahoogroups.com>; <freebay at mailman.qth.net> Sent: Saturday, December 04, 2010 7:59 PM Subject: [Amateur-repairs] Computer drives >I don't expect anyone wants one of these, but I've "got" to ask anyway. > > Have box of various computer drives.... floppy (all types), hard (SCSI), > and even a CD-RW. > > Of course, no drivers. > > Free for postage > > Ed > > . > ____________________________________________________________ > Explosive Stock Secrets > Learn the Secret art of picking penny stocks before they spike > http://thirdpartyoffers.juno.com/TGL3141/4cfaba0b5b184f28c1st05duc >

15 years, 8 months

1
0
0 0

Free SCSI CD-ROM drives -- last stop before the dumpster!

by a50mhzham＠gmail.com

WANTED: A good home for my last three RACK'O'CD boxes by MDI. MUST GO, need space, need basement floor and drain tile repaired. PLEASE some take these, or some of the drives, soonest. Price: FREE (you pay shipping.) These are nifty 7 inch high rack mount boxes about 20 inches deep, each containing seven SCSI CD-ROM drives, a power supply (4 voltages, including +5 at 23A, +12 at 15A) assorted cabling, and a SCSI LUN controller widget. The boxes have two SCSI conncectors each, the large "centronics" type (50-pin?) and a SCSI address selector. The CD-ROM drives are Toshiba XM-5401B, each mounted to a sort-of sled, more like drive rails, with spring-loaded thumb screws holding them in. Each has connectors for Audio Out (L and R), SCSI ID and termination, SCSI, and power. The boxes have a hinged door on top for access to the rear of the drives. With the thumb screws on the drives, tool-less removal is possible. If you need the terminating resistor packs, specify you want drive a #7 (first-come, first served.) You can get the entire box, or two, or three, or some drives (specify quantity) but I don't really want to disassemble these enough to extract the power supply. If I do that, I'll keep a power supply. They look like old style AT type, without the motherboard connection. ----- 135. [Computing] Was it Ritchie or Thompson who said about X: "Sometimes, when you fill a vacuum, it still sucks"? --... ...-- -.. . -. ----. --.- --.- -... a50mhzham at gmail.com (Email) N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB: http://www.mixcom.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

15 years, 8 months

3
2
0 0

SCSI to IDE

by lynchaj＠yahoo.com

[snip] 2) I don't want a pre-built board with peripherals I don't need on it. I am a great believeer in actually designin the hardware to suit the problem I am solving -tony -----REPLY----- Hi, Please check this approach to a SCSI to IDE and SD interface My design for the SCSI to IDE and SD interface is just the basics: Z80, RAM, ROM, UART, IDE, SD, and SCSI controller. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=SCSI2IDE Everything fits comfortably on a Eurocard PCB. All the part are commonly available for about $20-$30 total. Thanks Andrew Lynch

15 years, 8 months

4
6
0 0

SCSI to IDE

by lynchaj＠yahoo.com

Is the Z53C80 still available new ? If so from where ? Cheers. Phill. -----REPLY------ Try findchips.com Digikey, Quest Components, Area51ESG, eBay, etc. You might need to get an RFQ. Thanks! Andrew Lynch PS, if you or anyone else is interested in helping/developing on making this project a reality, please join me on vintage-computer.com forums. I am assessing interest in this as an N8VEM project and need some volunteer builders to launch the project. The schematic, PCB layout, and parts list is ready for a prototype order which will happen once there is enough builders involved to sustain the project.

15 years, 8 months

1
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TECO...

by bqt＠softjar.se

Coming a bit late into this, but anyway... On 11/18/10 08:39, "Jerome H. Fine"<jhfinedp3k at compsys.to> wrote: > >Antonio wrote: > >>>> >>>Having (many years ago) recovered data from a borked RT-11 >>>> >>>filesystem, I can certainly confirm that. >>>> >>> >>> >>However, I don't understand how you can use TECO to actually >>> >>repair an RT-11 filesystem. For that purpose, I can only see >>> >>SIPP as being able to >>> >>change or repair >>> >> >> >I'm pretty sure I didn't say "repair"; I merely recovered data. >> > >> >I don't recall exactly what went wrong, but essentially I went >> >in with TECO and found the right blocks for the various source >> >files I needed, loaded them into TECO and wrote them out >> >to floppy. Needed some minor tidy up as I recall but that's about all. >> > >> > > OK!! I understand completely!! If anyone else who is interested does not > understand, please ask some questions. > > If the ASCII data in question was not in the first buffer, than I assume > that > something like the TECO command: > <ASstring$:;J9999K>$$ > was what you used to find the start of the file which you had lost. Well, yes and no. What you actually do is: ERfilename$_string$$EWnewfile$HPW$EC$EX$$ (assuming that all the data you are interested in are in the buffer, otherwise include P commands in there to the appropriate amount, before the HPW.) If you really want to use A to append more data from the disk, you should probably not use 9999K to dump the current buffer, but use HK instead. Also, if a search fails, you'll aready be at 0, so no reason for the J command. > By the way, KED can do the same, but is limited to devices (I assume that > you must have done a non-file-structured open, i.e. ERdev:$$) that are less > than 32768 blocks. Since I have never had occasion to edit a full MSCP > device of 65535 blocks, I just never noticed the limitation. This > restriction > for KED also applies to files. So KED can INSPECT a logical device which > is 32767 blocks or less or an RL02 device, but no physical device or file > larger than 32767 blocks in total. TECO itself will not care, so that would be a limitation from the RT-11 point of view, in that case. TECO will serially read a file (or device) >from start to finish, and don't really care about the file position information as such. >>> >>Can you describe how you used TECO to recover data from a >>> >>borked RT-11 filesystem (assuming that you did more than just >>> >>READ the text contents >>> >>of the files >>> >>in the same manner that KED would also allow using a >>> >>non-file-structured edit >>> >>of the whole device)? Otherwise, if you just used TECO to >>> >>just READ the >>> >>text >>> >>strings, please confirm that as well. >>> >> >> >I didn't fix a corrupt system back to a working system. I read >> >blocks from disk into TECO (as you say, in a non-file structured >> >mode), somehow found the root directory and worked out where the >> >files I cared about lived, read each of those and saved them to floppy. >> >Then either the disk was reformatted or it went back to whoever we >> >bought it from for a replacement- I just don't remember. >> > > More than likely, you just found the source ASCII text you were looking > for and wrote > that to the floppy file using something similar the the TECO command > that I suggested. > TECO is not designed nor able to show individual words of a specific > block as SIPP > is able to do. Not sure what SIPP is, but TECO can handle, and display, anything. It was designed to be able to deal with any kind of information, not just text. >> >TECO can certainly read disk block N, and having done that it can surely >> >mangle that disk block; what I'm not sure of is whether it can then >> >write that block out to the required disk block. >> > > I really don't think so. TECO can, as far as I know, work only with > ASCII text strings. No. TECO works perfectly fine with any kind of binary data. > Binary data can't be managed easily, if at all, by TECO such as what > SIPP can do. No. TECO handles binary data just fine. Whenever you enter text, all characters are allowed. And by all characters, I really mean all characters. Control characters are just as welcome as printable ones. A few characters have special meaning in TECO, such as ESC, ^C, and a few more. ESC can be used by instead setting another character as the delimiter for the search string. Other special control characters can be inserted by prefixing them with ^Q, which means that the next character should be taken literally, and not be interpreted. For most characters though, nothing special is needed at all, and you can just enter them in your search string. In the case you don't really want to type the control characters as such, you can create the search string before using it, and then just suck it into your search string as well. In addition to this, you also have the powerful pattern matching of search strings, that TECO gives you. So you can say that any character should match at a specific position, and then match whatever comes after more specifically as well (or any number of other potential pattern matching schemes you can think of). Johnny

15 years, 8 months

2
1
0 0

AT&T 3B1 keyboard protocol

by classiccmp＠philpem.me.uk

(once more, from the correct email account...) Hi guys, Does anyone have any details on the control protocol for the keyboard on the AT&T 3B1? A command list and/or scan code list would be most useful... or even actual driver source code :) I'm about a third of the way there with my emulator -- it's running the BootPROM, passes the MAPRAM, VRAM and Base RAM self tests, and I'm well on the way to implementing memory mapping/protection and the UI interfaces (keyboard, mouse and video)... I'm not sure how to go about emulating the telephony hardware though; I might just leave that "unemulated" for now. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

2
4
0 0

OS X (was: what was VMS/OpenVMS written in?)

by bqt＠softjar.se

On 12/01/10 23:55, Richard<legalize at xmission.com> wrote: > In article<alpine.DEB.2.00.1012011116190.24432 at slate.spiritone.com>, > "Zane H. Healy"<healyzh at aracnet.com> writes: > >> > On Wed, 1 Dec 2010, Richard wrote: >> > >>> > > Since it has a BSD kernel underneath, I'm guessing that all of the OS >>> > > proper is written in C and that all the Apple stuff on top is written >>> > > in Objective-Cish. >> > >> > It does not have a BSD kernel underneath. It uses the Mach Microkernel. >> > It has a BSD layer on top of that. > Sorry, my mistake. I knew there was BSD in there somewhere. Still, I > doubt the Mach stuff is written in Objective-C, although I believe it > originally came from NeXT, so who knows. Well, technically, OS X is neither Mach, nor BSD. But a mix of both. See http://en.wikipedia.org/wiki/XNU for more details. But I'd consider it closer to BSD than Mach myself. There is not really much of the microkernel left in there... Johnny

15 years, 8 months

2
1
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Obscure C code (was Re: Excessive optimization)

by rick＠rickmurphy.net

At 11:04 PM 12/2/2010, Ethan Dicks wrote: >On Thu, Dec 2, 2010 at 7:48 PM, Fred Cisin <cisin at xenosoft.com> wrote: > > On Thu, 2 Dec 2010, Eric Smith wrote: > >> > A[i++] = i++; > >> I can't quote chapter and verse, but I'm fairly sure the standard will > >> say that the result of that assignment is undefined. > > > > C can be pretty loose about letting you do such. > >There are many things that folks commonly do that are officially >undefined... like strlen(NULL) (that returned 0 on an NCR box but >segfaulted a SPARC - the NCR guys tried to claim it proved the Sun was >broken, but I had to point out that it's undefined). I remember this with a large potential customer with a bunch of applications running on HP-UX that needed to be ported to ULTRIX. lots of code like strcpy(foo, NULL); used to initialize strings and strcmp(foo, NULL) to see if a string is empty, etc. Apparently location 0 in memory had a zero. Fixing this required a lot of work, then we had to fix binary blobs written to disk (big-endian) to fix them to little-endian. All of this was used to demonstrate that the DEC platform was obviously unusable. Aren't sales reps fun? Probably more relevant to the compiler optimization thread, another fun with marketing incident was the Sun rep handing our customer a "simple little benchmark" that their compiler apparently recognized and optimized out. The SPARC ran it in seconds while our MIPS based machine took quite a while. This was my first run-in with the benchmark preprocessor that did "deep optimization" of the SPECmark benchmarks. -Rick

15 years, 8 months

1
0
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SCSI to IDE

by lynchaj＠yahoo.com

SCSI to IDE Joachim Thiemann joachim.thiemann <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20SCSI%20to%20IDE&In-Reply-To= %3CAANLkTikac5TkJkKANRBy_tH4rvEUZPE0qfBfS%3DouSuJN%40mail.gmail.com%3E> at gmail.com Sat Nov 27 09:07:00 CST 2010 * Previous message: SCSI to IDE <http://classiccmp.org/pipermail/cctalk/2010-November/294382.html> * Next message: SCSI to IDE <http://classiccmp.org/pipermail/cctalk/2010-November/294386.html> * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2010-November/date.html#294385> [ thread ] <http://classiccmp.org/pipermail/cctalk/2010-November/thread.html#294385> [ <http://classiccmp.org/pipermail/cctalk/2010-November/subject.html#294385> subject ] [ author ] <http://classiccmp.org/pipermail/cctalk/2010-November/author.html#294385> _____ On Fri, Nov 26, 2010 at 11:48, joe lobocki <jlobocki at gmail.com <http://www.classiccmp.org/mailman/listinfo/cctalk> > wrote: > So what is our option? I have seen SCSI to IDE adapters around, but they go > up into the $100's to $200's, say you have a minimum 10 machines, that > leaves you somewhere between $1,000 and $2,000 total, before the disk or > devices. If we could design a simple SCSI to IDE interface, we could be set > for a good long while on storage for these devices for a decent amount of > time. There are all sorts of adapters to IDE, there is CF to IDE, SD to > IDE, > SD to CF which could be placed in a CF to IDE adapter if need be, i'm sure > one could also rig up a USB drive to SCSI if one tried, but I could be > wrong. > > I have previously proposed here a SCSI-to-SD interface; I've only done preliminary brainstorming on it, but think it should not be too hard. The SD card interface is very simple, both from a logic and electrical point of view: if you don't care much about speed it can be done with SPI. (the speed should be sufficient to keep up with 68k Mac, Amiga and Atari) All logic can probably be done in a single AVR or even PIC chip, if you run that at 3.3V, the only additional hardware is the SCSI level shifters. I do not know enough about low-level SCSI to start designing this yet, and since I gave away my Amiga 3000 and classic Macs my interest in this project has all but disappeared... still it'd be kinda fun, I think. Joe. -- Joachim Thiemann :: http://www.tsp.ece.mcgill.ca/~jthiem -----REPLY----- There was some room left on my SCSI to IDE converter board design so I added an SD socket. The SD circuit is very simple and is able to work with some left over inputs and outputs from the UART. I think this design would allow for a SCSI to SD converter as you mentioned. The original intent was for SCSI to IDE converter but would also allow for SCSI to CF via an IDE to CF adapter. After a closer reading of the Z53C80 datasheet, I think it is possible to implement both the polling mode and a pseudo-DMA mode SCSI. The circuitry seems pretty straight forward and I think an 8 MHz Z80 should be able to get some fairly decent transfer speeds. http://www.vintage-computer.com/vcforum/showthread.php?22906-SCSI-1-to-from- IDE-drive-converter Andrew Lynch

15 years, 8 months

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QIC backup tapes available

by SUPRDAVE＠aol.com

I've got to clear out some various backup tapes I've been keeping for several years now. For starters, I have a bunch of QW5122F and QIC-3020 taumat format tape carts available. pay for shipping and anything else you want to add, and they are yours. Reply off list please.

15 years, 8 months

1
0
0 0

SCSI to IDE

by trag＠io.com

> Date: Wed, 1 Dec 2010 12:55:59 -0500 > From: William Donzelli <wdonzelli at gmail.com> >> ? That is not so hard, it is very common to build machines like this in >> Brazil. > > Second hand Taigs are fairly plentiful and not horribly expensive. > They are plenty capable of PC board drillwork, plus you can do all > sortf os other fun things with them as well. I did a search on Taig. Interesting machines and the prices look comparatively good. I was considering a lathe a while back for my rocketry hobby... Which machine would one need for automated drilling? It looks like the CNC Mill would be needed. It's new price is $2200+. It would have to be discounted an awful lot on the used market before I would think that was a better buy than just having boards professionally fabricated. I think the Micro Mill is mechanically capable of the job, but it doesn't seem to have any type of automated controls, but perhaps I just don't understand what a mill is. Which leads to the other issue. In order to make an intelligent decision about buying a drilling machine, it seems that I must become moderately educated about the art of machining. Which is an interesting topic, but not the hobby I was setting out to practice. This is what ultimately stopped me from buying a lathe for rocketry. Toner transfer PCB fabrication is attractive because I already have a laser printer that serves another purpose. A laminator takes up little space and is easy to put away. The etching tank is a bit of a pain, but not too bad. The problem is when I start adding in a milling machine, learning enough about machining to make intelligent purchases, or building a drilling machine out of a plotter, and the same two issues for electroplating, which also kind of leads to building one's own power supply (AKA plating rectifier). All of these are interesting topics/diversions, but enough of them and one isn't practicing hobby electronics any more, one is practicing PCB making as the primary hobby. Of course, if enough of my hobbies lead to machining, maybe I should take it up. I don't know where I'd make the space for the tools though. Someone else mentioned using a drill press with jigs. How would that work? Would that be like having a pre-drilled template? That might be interesting. I could see using the toner transfer procedure on a piece of steel, then drilling the steel and then pegging boards to the steel for future drilling in stacks. Might be a little hard on the drills if they aren't well centered though. Jeff Walther

15 years, 8 months

4
3
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MACRO FAP

by legalize＠xmission.com

Ken Knowlton sent me a paper from AFIPS 1964 on his BEFLIX language for creating animations (named from "Bell Flicks" as the work was done at Bell Labs). The language uses "MACRO FAP" as its implementation layer so to create a modern implementation of BEFLIX, I would need to know some things about "MACRO FAP". Google led me to this page: <http://www.softwarepreservation.org/projects/FORTRAN/source/ibsys/FORTRAN/9…> Which seems to be the IBM 7090 assembly source code for the MACRO FAP program, from which I glean that "FAP" is an acronym for "FORTRAN ASSEMBLY PROGRAM". I don't know 7090 assembly, although I can guess at the opcodes. This leads me to the following questions: 1) How long has softwarepreservation.org been around? Its part of the CHM, but I haven't stumbled on this web site before. 2) Does anyone have any experience with MACRO FAP that can help me understand the semantics of MACRO FAP instructions? 3) Barring that, does anyone have any IBM 7090 assembly experience that can help me understand the semantics of the implementation of MACRO FAP so that I can understand the semantics of its command language? BEFLIX is actually quite interesting and could be fun in creating animated movies today. Its got a combination of simple 2D graphics primitives, turtle graphics and animation control in its command set. I'd like to write a BEFLIX interpreter for modern experimentation. Seeing as BEFLIX was created in 1964, its probably one of the oldest, if not the oldest, domain specific language for creating computer graphics animations. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 8 months

2
1
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what was VMS/OpenVMS written in?

by bqt＠softjar.se

On 12/01/10 08:13, Rich Alderson<RichA at vulcan.com> wrote: > From: Dennis Boone > Sent: Tuesday, November 30, 2010 5:57 PM > >>>> >>> I can't find any COBOL, BASIC, MODULA, CORAL, DIBOL, etc. >>> >> In 7.3, I'm sure that's now true. I'm pretty sure I remember some >>> >> COBOL and BASIC back in the 4.x and 5.x days, but I can't promise that >>> >> my memory is 100% correct. >> > Given the RSX heritage, I wouldn't be surprised if some BASIC code came >> > across. I was actually almost surprised not to find MODULA, but a bit >> > of googling suggests my memory of a DEC compiler is erroneous. I would >> > only expect to find COBOL in some kind of reporting tool, where >> > performance wouldn't so much. > I think you've confused RSX-11M (the basis of VMS) with RSTS/E (the version > in existence by the time VMS came to be written). RSX-11{A,B,C,D,M,S} is > very much Macro-11 oriented; I'm not sure that there is a BASIC available. Late to the thread... (as usual) :-) Yes, there exists BASIC for RSX. It's called BASIC+2. But no part of RSX proper have anything to do with this layered product. RSX-11M(+) is mostly written in MACRO-11, with some BLISS-11 in there. Johnny

15 years, 8 months

1
0
0 0

what was VMS/OpenVMS written in?

by bqt＠softjar.se

On 12/01/10 08:13, Dennis Boone<drb at msu.edu> wrote: > > > I can't find any COBOL, BASIC, MODULA, CORAL, DIBOL, etc. > > > In 7.3, I'm sure that's now true. I'm pretty sure I remember some > > COBOL and BASIC back in the 4.x and 5.x days, but I can't promise that > > my memory is 100% correct. > > Given the RSX heritage, I wouldn't be surprised if some BASIC code came > across. I was actually almost surprised not to find MODULA, but a bit > of googling suggests my memory of a DEC compiler is erroneous. I would > only expect to find COBOL in some kind of reporting tool, where > performance wouldn't so much. ??? What made you connect RSX with BASIC? There is not a single piece of RSX that has anything to do with BASIC, as far as I know. You'll have to go to some layered products before you find any BASIC at all in relation to RSX. Were you perhaps thinking of RSTS/E? Johnny

15 years, 8 months

1
0
0 0

AT&T 3B1 keyboard protocol

by philpem＠philpem.me.uk

Hi guys, Does anyone have any details on the control protocol for the keyboard on the AT&T 3B1? A command list and/or scan code list would be most useful... or even actual driver source code :) I'm about a third of the way there with my emulator -- it's running the BootPROM, passes the MAPRAM, VRAM and Base RAM self tests, and I'm well on the way to implementing memory mapping/protection and the UI interfaces (keyboard, mouse and video)... I'm not sure how to go about emulating the telephony hardware though; I might just leave that "unemulated" for now. Thanks, -- Phil. philpem at philpem.me.uk http://www.philpem.me.uk/

15 years, 8 months

1
0
0 0

what was VMS/OpenVMS written in?

by mdavidson1963＠gmail.com

On Wed, Dec 1, 2010 at 8:01 AM, Zane H. Healy <healyzh at aracnet.com> wrote: > At 7:30 AM -0800 12/1/10, Gene Buckle wrote: >> >> I'd love to have another VAX, but I can't afford to feed it. Emulation >> would be nice. :) > > Replacement HW costs are definitely going up. ?I managed to score a pair of > Compaq XP1000's (Alpha 21264 500Mhz & 667Mhz) at the low point in their > value. ?One now has a dead power supply, and last I checked XP1000's go for > big bucks (not sure about the PS's). ?I assume drives are getting harder to > find, but I have a large stash. I have several older Alpha's dating back to > a DEC3000/300LX. ?My VAX hardware is a lot sparser, flakier, and my drive > options more limited (plus I don't want to run a Q-bus system 24x7 which > limits me even more). > > Still the biggest roadblock on keeping the stuff running is the cost of > electricity and cooling. ?That's what caused me to power down MONK, which > had been running for over a decade in one form or another. > > There are several emulation solutions, I'd recommend looking at SIMH first. > ?I'm thinking of trying it on a Mini-ITX box. > > Zane What are people's opinions of Personal Alpha (http://www.stromasys.ch/hardware-virtualization-solutions/charon-axp/downlo… Mark

15 years, 8 months

5
8
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what was VMS/OpenVMS written in?

by john_finigan＠yahoo.com

On PersonalAlpha, Zane Healy wrote: > I have two major issues with it. One is it requires > Windows, the other is > that it is restricted to 128MB of RAM. Stromasys actually has an AlphaStation 400 emulator that runs on Linux, and allows at least 512 MB. You have to register on their site, but it's free. There's an also ES40 emulator that I think will allow several GB. The AS400 runs Tru64 reasonably on my 2.X GHz AMD PC. PersonalAlpha emulates a 3000/400 but won't boot prehistoric OSF/1 versions like 2.0, last time I tried. Not that I can blame them. I wonder if 2.0 is still in use anywhere? John Finigan

15 years, 8 months

2
1
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SCSI to IDE

by thomas.gardner＠sbcglobal.net

I haven't been following this thread too closely so I may have missed something, but it seems to me that the proposed solutions are overly complex. One simple solution that comes to mind is to define a set of vendor unique SCSI commands, one for each of the registers in the IDE command stack and then do all the emulation in the device driver on the host side. The interface card is just then a simple state machine; really simple if u make it a non arbitrating protocol implementation and use PIO for data transfers (SCSI-1 lives :-). Tom

15 years, 8 months

2
1
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SCSI to IDE

by lynchaj＠yahoo.com

SCSI to IDE Al Kossow aek <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20SCSI%20to%20IDE&In-Reply-To= %3C4CF2FB80.6080104%40bitsavers.org%3E> at bitsavers.org Sun Nov 28 19:01:52 CST 2010 * Previous message: SCSI to IDE <http://www.classiccmp.org/pipermail/cctalk/2010-November/294437.html> * Messages sorted by: [ date ] <http://www.classiccmp.org/pipermail/cctalk/2010-November/date.html#294438> [ thread ] <http://www.classiccmp.org/pipermail/cctalk/2010-November/thread.html#294438 > [ <http://www.classiccmp.org/pipermail/cctalk/2010-November/subject.html#29443 8> subject ] [ author ] <http://www.classiccmp.org/pipermail/cctalk/2010-November/author.html#294438 > _____ On 11/28/10 4:50 PM, Andrew Lynch wrote: > The only new element of this design would be converting a pair of 8255 PIAs > to SCSI-2. Get out of the 20th century, please. _____ * Previous message: SCSI to IDE <http://www.classiccmp.org/pipermail/cctalk/2010-November/294437.html> * Messages sorted by: [ date ] <http://www.classiccmp.org/pipermail/cctalk/2010-November/date.html#294438> [ thread ] <http://www.classiccmp.org/pipermail/cctalk/2010-November/thread.html#294438 > [ <http://www.classiccmp.org/pipermail/cctalk/2010-November/subject.html#29443 8> subject ] [ author ] <http://www.classiccmp.org/pipermail/cctalk/2010-November/author.html#294438 > _____ More information <http://www.classiccmp.org/mailman/listinfo/cctalk> about the cctalk mailing list _____ OK, I am standing by for your awesome super modern ultra cheap design. Still waiting. Anything? [crickets] I thought so. Another typical CCTALK project. 100% BS. Call me when you're serious about actually getting something done.

15 years, 8 months

3
2
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SCSI to IDE

by trag＠io.com

> Date: Tue, 30 Nov 2010 13:59:11 -0800 > From: "Chuck Guzis" <cclist at sydex.com> > On 30 Nov 2010 at 18:56, Alexandre Souza - Listas wrote: > >> - I can design a PCB at home using free tools (Kicad rulez!) - I >> can make boards good enough for fine pitch SMD at home (see my page, >> http://tabalabs.com.br/eletronica/tts/index.htm) and the equipment is >> all made from junk. > > Some very nice work, Alexandre! Yes, it is. How did you drill the holes? The issue that always stops me from taking up toner transfer PCB fabrication is drilling the vias. I calculate that my typical 8" X 10" panel of boards is going to have about 1000 vias on it more or less. Even if I stack several boards, peg them together and drill them all at once, that's an awful lot of fine pitch holes to drill by hand. By the time I contemplate, design, and build some kind of automated hole drilling machine, I'm back to thinking that paying for fabrication is cheaper. Getting mil resolution on a mobile drill head is not a simple task, or so it appears to me. Then if I solved the drilling issue, or just buckled down and did it by hand, plating the through-holes either involves an intricate and slightly dangerous (and more importantly, takes up lots of space) copper electroplating capability or soldering a wire in every via, which is back to vast tedium. Grommets are too large for the vias I usually want and also are so expensive it's generally cheaper just to pay for fabrication. Anyway, solving the drilling and plating issue is what stops me from home PCB fabrication. Jeff Walther

15 years, 8 months

7
15
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Shipping to Brazil (was SCSI to IDE)

by dm561＠torfree.net

Date: Wed, 01 Dec 2010 11:31:43 -0800 From: "Chuck Guzis" <cclist at sydex.com> Subject: Re: SCSI to IDE On 1 Dec 2010 at 14:13, William Donzelli wrote: > Life is not Minecraft - sometimes it is easier/faster/better just to > buy the tools we need. Used, good condition Taigs are really not all > that much money. Oh, agreed, when it's practical. But if it's arm-and-a-leg as in the case of Alexandre, I recommend seeking alternatives. It may be *much* cheaper to build with the results being "good enough". --Chuck +++++++++++++++++++++++++++++++++++++++++++ Alexandre's right. My girlfriend is from Brazil, and as it happens her son wanted a small CNC mill; he decided on a nice little kit from California, but even for a relatively small package like that the shipping and duty would have tripled the price, so we had it shipped up here to Toronto and she took it down in her luggage on her next trip down, along with a Sony laptop for her daughter also for less than half price. Around $3000 saved just on those two items. I don't know if the high duties encourage local industry, but it sure looks like they foster imagination and creativity in making do with what's available locally; hard for us to imagine up here where stuff is so cheap. m

15 years, 8 months

1
0
0 0

FS: Multiplan & some books

by charlesmorris800＠centurytel.net

More closet cleaning :) See pics. Prices *include* postage in the USA lower 48 states. Paypal to this email. Will ship internationally at additional actual cost. Microsoft Multiplan for Apple II. Two floppies, manual in binder and clear box. $10 "Beneath Apple DOS", $6 "Apple Pascal - A Self-Study Guide", $6 "Borland Turbo Pascal 4.0, IBM PC version", (650+ pages), $8 http://s1181.photobucket.com/albums/x426/DrCharlesMorris/?action=view&curre… thanks Charles

15 years, 8 months

1
0
0 0

what was VMS/OpenVMS written in?

by legalize＠xmission.com

Was it written in predominantly one language? If so, which one? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 9 months

9
21
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"How I saved the Macintosh"

by tshoppa＠wmata.com

>> The title smacks of hyperbole, but still an interesting read from a Macintosh ComputerLand salesman back in the day. >> >> http://www.theregister.co.uk/2010/11/30/charles_eicher_computerland_mac_mem… >The author sounds cocky and bitter. That's a very popular tone of those who read and write The Register :-). Remember, they were among the first to identify Itanium as the "Itanic", and have along lineage going all the way back to Charlie Matco. If you earned a Charlie Matco coffee mug, then by definition you knew how things really went down. My favorite Register contributor by far in the past couple years (way post Charlie Matco), is Ted Dziuba. E.g. "Google releases serialization scheme: Pedantic programmers hold love-in". http://www.theregister.co.uk/2008/07/14/dziuba_google_protocol_buffer/page2… choice quotes include: * Unfortunately, because of heavy inbreeding within Silicon Valley * engineering teams, the two products, although functionally * similar, are not compatible with one another. * If you want to do it, writing your own RPC layer isn't a herculean * task. I managed to hack something together on top of Tomcat * in a couple of hours. It didn't make me feel as manly as I * hoped it would, so to supplement, I suggest you have two * cigars, a glass of Maker's Mark, no ice, and a copy * of The Godfather trilogy within reach. * The Web 2.0 startup circle, being mostly composed of pretentious * little shits, is likely to adopt protocol buffers as a first-class * data interchange format. And my favorite of all time: * Think of how scalable that shit's gonna be. You'll put a real hurt * on all that imaginary load your system is taking. Then, you get * to go home and fuck the prom queen. Tim.

15 years, 9 months

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"How I saved the Macintosh"

by spectre＠floodgap.com

The title smacks of hyperbole, but still an interesting read from a Macintosh ComputerLand salesman back in the day. http://www.theregister.co.uk/2010/11/30/charles_eicher_computerland_mac_mem… -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- BOND THEME NOW PLAYING: "The Man With the Golden Gun" ----------------------

15 years, 9 months

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