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

by wacarder＠earthlink.net

> I've posted some pictures of the blue panel 11/35 and > a PDP-8a that I recently acquired and got up and running. > > The pictures are at: > > http://www.woffordwitch.com/PDPCollection.asp > > Click on the Blue Panel PDP-11/35 link. After contemplating swapping out the blue front panel for a standard 11/35 front panel, I have decided to leave this one as is, since I've never seen another blue front panel 11/35 running. I have only heard of one other one like this, so I will keep this one as-is, since it seems to be somewhat unusual and a conversation piece, and.... IT WORKS! Ashley

21 years, 1 month

5
4
0 0

The Pioneer Anomaly (fwd)

by vcf＠siconic.com

Here's a response I received today from the Pioneer Anomaly team, the folks who have the data tapes from the Pioneer missions that were at risk of being lost: ---------- Forwarded message ---------- Date: Fri, 22 Jul 2005 14:08:24 -0700 From: Bruce Betts <tpsbb at planetary.org> To: Vintage Computer Festival <vcf at siconic.com> Subject: re: The Pioneer Anomaly Hi, Thanks to preliminary contributions from members, the Pioneer Anomaly team have been able to confirm that data can be retrieved successfully from the old data tapes using the existing machine at JPL. We greatly appreciate your offer, but don't think it will be necessary as the tests have been successful so far. We will keep you in mind however and I will pass your information along to the team. We have also established a two phase plan with the team. Phase 1 is underway now: data recovery and validation, which will take several months of tedious work. Phase 2 will be a period of intensive data analysis to carefully search for the source of the anomaly. Thank you for your interest. FYI, more information on the Pioneer Anomaly and things related to our Pioneer Anomaly special appeal can be found at: http://planetary.org/news/2005/pioneer_anomaly_faq.html Bruce Betts Bruce Betts, Ph.D. Director of Projects The Planetary Society, Ph:626-793-5100 The Planetary Society is the largest space interest group on Earth. The Society is non-profit and non-governmental. See http://planetary.org for more information. --- -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 1 month

2
1
0 0

hardware debugging - history repeats itself

by jack.rubin＠ameritech.net

Just wanted to share a success story - During the last Chicago heat wave, our air conditioning stopped working. Nothing, furnace (we have those up north) fan worked fine and air was circulating, but no cooling at all. No response from the compressor. Supply and control voltages all checked out ok, thermostat worked, etc. Turned out to be an earwig (small insect) trapped in the contacts of the compressor controller. Removed said insect, cleaned up the contact points and we were cool. Shades of Grace Hopper and the Mark II moth! Jack

21 years, 1 month

4
3
0 0

disk versus disc

by cb＠mythtech.net

>OB_CCTALK: Do modern (oxymoron?) Japanese, British, and Amurican cars >have "Disc brakes" or "Disk brakes"? (German cars have "disk") My 1965 T-Bird said "Disc" on the brake peddle. -chris <http://www.mythtech.net>

21 years, 1 month

1
0
0 0

classiccmp knowledgebase

by jwest＠classiccmp.org

The classiccmp knowledge base will soon be supporting subcategories in addition to the current "major" categories. If anyone has better suggestions on how to name/arrange the categories & subcategory structures, I'm all ears :) Jay

21 years, 1 month

1
0
0 0

disk versus disc

by aek＠bitsavers.org

> doesn't seem to be a regional thing. In the docs I've been looking at, HP uses 'disc' while DEC uses 'disk'. Haven't looked at any 'DEC' docs from the Compaq or HP era to see if it changes one way or the other.

21 years, 1 month

3
2
0 0

Compupro progress / Console questions ?

by ajp166＠bellatlantic.net

> >Subject: Re: Compupro progress / Console questions ? > From: Dave Dunfield <dave04a at dunfield.com> > Date: Sun, 24 Jul 2005 21:24:53 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Hi Allison, > >>known but forgotton problem in the 8" world. 765 has a READY sense line >>and the 851 is know for changing state of the line during select. >>Solution, force ready at the board (jumper) and don't use it. READY >>was for detecting disk changes. > >Tried forcing READY on the original SA-851's, and it still didn't boot. >I immagine there must be some other jumpering issues. I'm leaving that >for now, as I do have a drive working. There is a board level jumper. >>>According to Compupro Docs, the Console port is USER 7 - I have >>>setup the board to respond to users 4-7, which is the default setup >>>requireed for the console shows in the Compupro docs. As noted >>>above, I can select user7 and talk to the console correctly, which >>>would suggest that this is all working correctly. >> >>It is likely initing the ports but may not use any of them. It's >>possible the bootable media may use a different port scheme. Its >>likely a difference between the boot roms and the BIOS code once >>the boot transfers to the OS. > >Yes, thats one of the possibilities - others are that it is hanging >on some other part of the init, or simply crashing (bad RAM etc.) > > >>I assume based on the CPU your runnig CP/m-86 (or any DRI -86) >>as the boot roms load a loader then load the OS (bios and all). >>So booting is multi step code. > >Yes, it is CP/M 86 as noted in my original message: > >>The disks I am using are original Compupro distribution disks >>(Can't make copies yet), labled: >> >>Serial# C86-272-1854 >>Version: CP/< 86 (P0 in handwriting) >>CP/M 86 1.1 >>SYSTEM MASTER >>Disk Number 1 >>Single Sided - 1024 B/S >> >>Serial# C86-0272-1854 >>Version: 1R >>CP/M 86 >>SYSTEM MASTER >>Disk Number 2 of 2 >>Single Sided - 1024 B/S > >I was hoping someone might recognize these disks and be able to tell me >if they are setup for the Interfacer-4, or some other device - or perhaps >someone has a known good boot disk for this config (86/87, Disk1A, >Interfacer4)? > >I've had to put it away to get some other more pressing items on the bench, >however when I get back to it, I am going to proceed as follows: > >I've been using an EPROM emulator to load my modified boot - this will also >let me change the content of the boot ROM with power-on (while it is switched >out of course). > >The boot rom provides 512 bytes at 00-FF - while it is enabled (out of reset) >I can write all of memory, however I can read only the boot ROM - once I hit >the enable, the boot-rom disappears and RAM appears. > >I plan to write a loader which will allow me to load a block of code into >RAM at $0200, and to switch the ROM OFF and the RAM ON in the very last >instruction of the 0000-01FF block - so it should transition to the code in >RAM correctly. > >Boot the system normally, >then load the loader into the boot-rom (via EPROM emulator), >Reset should start loader. >Send my 8086 monitor. >Loader will put it in RAM and transition to it. >Then I should be able to browse around the loaded memory image, >and perhaps determine what type of console device it wants to communicate >with. > >Main problem is: I don't know much about CP/M-86 - I do not have technical >documentation or experience with it. > >With CP/M-80, it's fairly easy to find the console drivers by following >addresses. I have no idea how to do this with CP/M-86 > >Can you give me any pointers to how to find the console I/O functions under >CP/M-86? > >I do have CP/M-86 running on an APC that I Can experiement with - I will also >check the APC docs to see if they contain any useful info. I also have a Rainbow >and docs, however I do not know how similar it will be as I seem to recall that >the CP/M it has is a special dual-processor version. Well I've never had to find the drivers blind. the time I spent with -86 was at the front of the process, creating a working bios so I knew where I was going rather than trying to figure were someone else went. It didn't hurt that I had a boot monitor (subset of DDT in eprom). CP/M 86 is not unlike cpm-80. The rom boot is enough to pull the next boot off disk and usually that loads the loader. The laoder gets dropped at a standard address 0000:0400h sticks in my mind. The loader is really a minimal bdos and bios, enough to find CP/M86.sys and put it at the load address for the system. I don't remember there being dynamic sizing so if there isn't enough ram, Oops, crash. Once loaded the BDOS and BIOS addresses have standard calling locations that are jumps (long jumps) to them. A handy thing would be to disassemble the load file directly rather than finding it ram, if possible. The apc is a good version. The rainbow is really in a different league as the bios is shared with the z80 making it much more complex. Allison

21 years, 1 month

1
0
0 0

8/e paint

by aw288＠osfn.org

I just pulled a somewhat parted Typeset-8 out of a very dirty Memphis basement, and just like the PDP-8/e I had before this, the panel paint is just starting to peel above the rightmost switches. This bugs the hell out of me. I hate peeling paint. I am toying with the idea of mixing up some paint to patch the flaws (the rest of the panel is really great). Is there any interest in 8/e orange (both shades) touchup paint, or am I the only one that manages to get 8/e's with peels? The Typeset came with a DF32/DS32 pair and a Teleype BRPE paper tape punch (PP67?), but the paper tape panels and electronics were removed years ago. William Donzelli aw288 at osfn.org

21 years, 1 month

4
5
0 0

Compupro progress / Console questions ?

by dave04a＠dunfield.com

Hi Allison, >known but forgotton problem in the 8" world. 765 has a READY sense line >and the 851 is know for changing state of the line during select. >Solution, force ready at the board (jumper) and don't use it. READY >was for detecting disk changes. Tried forcing READY on the original SA-851's, and it still didn't boot. I immagine there must be some other jumpering issues. I'm leaving that for now, as I do have a drive working. >>According to Compupro Docs, the Console port is USER 7 - I have >>setup the board to respond to users 4-7, which is the default setup >>requireed for the console shows in the Compupro docs. As noted >>above, I can select user7 and talk to the console correctly, which >>would suggest that this is all working correctly. > >It is likely initing the ports but may not use any of them. It's >possible the bootable media may use a different port scheme. Its >likely a difference between the boot roms and the BIOS code once >the boot transfers to the OS. Yes, thats one of the possibilities - others are that it is hanging on some other part of the init, or simply crashing (bad RAM etc.) >I assume based on the CPU your runnig CP/m-86 (or any DRI -86) >as the boot roms load a loader then load the OS (bios and all). >So booting is multi step code. Yes, it is CP/M 86 as noted in my original message: >The disks I am using are original Compupro distribution disks >(Can't make copies yet), labled: > >Serial# C86-272-1854 >Version: CP/< 86 (P0 in handwriting) >CP/M 86 1.1 >SYSTEM MASTER >Disk Number 1 >Single Sided - 1024 B/S > >Serial# C86-0272-1854 >Version: 1R >CP/M 86 >SYSTEM MASTER >Disk Number 2 of 2 >Single Sided - 1024 B/S I was hoping someone might recognize these disks and be able to tell me if they are setup for the Interfacer-4, or some other device - or perhaps someone has a known good boot disk for this config (86/87, Disk1A, Interfacer4)? I've had to put it away to get some other more pressing items on the bench, however when I get back to it, I am going to proceed as follows: I've been using an EPROM emulator to load my modified boot - this will also let me change the content of the boot ROM with power-on (while it is switched out of course). The boot rom provides 512 bytes at 00-FF - while it is enabled (out of reset) I can write all of memory, however I can read only the boot ROM - once I hit the enable, the boot-rom disappears and RAM appears. I plan to write a loader which will allow me to load a block of code into RAM at $0200, and to switch the ROM OFF and the RAM ON in the very last instruction of the 0000-01FF block - so it should transition to the code in RAM correctly. Boot the system normally, then load the loader into the boot-rom (via EPROM emulator), Reset should start loader. Send my 8086 monitor. Loader will put it in RAM and transition to it. Then I should be able to browse around the loaded memory image, and perhaps determine what type of console device it wants to communicate with. Main problem is: I don't know much about CP/M-86 - I do not have technical documentation or experience with it. With CP/M-80, it's fairly easy to find the console drivers by following addresses. I have no idea how to do this with CP/M-86 Can you give me any pointers to how to find the console I/O functions under CP/M-86? I do have CP/M-86 running on an APC that I Can experiement with - I will also check the APC docs to see if they contain any useful info. I also have a Rainbow and docs, however I do not know how similar it will be as I seem to recall that the CP/M it has is a special dual-processor version. As always, thoughts, ideas, suggestions etc. are welcome. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 1 month

1
0
0 0

local demolition of SAGE building

by ajp166＠bellatlantic.net

> >Subject: Re: local demolition of SAGE building > From: shoppa_classiccmp at trailing-edge.com (Tim Shoppa) > Date: Sun, 24 Jul 2005 13:11:41 -0400 > To: cctech at classiccmp.org, cctalk at classiccmp.org > >> The minis and subminis of the 1950s, made for computer usage, >> were really not effected by power cycling. Filament burnouts on these >> types of tubes are exceeding rare. > >But inter-element shorts and leakage become more common, and my >experience (backed up by many years of leaky/shorted tubes) is that >these are related to power-on cycles. (i.e. "it worked last time I >used it, but then I turned it on and all it does is hum"). > >Maybe reduced sizes make physical tolerances between the elements more >critical in the smaller tubes. Even though a lot of the leakage >I've seen is between adjacent pins, not between adjacent elements. > >Tim. This is very true. The tube machines were not friendly to power cycling. Due to the amount of power invloved and loading effects. The preference was to kill B+ (high volts) to the affected section and keep the filaments hot. Further like all thermally affected things temperature cycleing ws not only a filament problem but tube seals (glass to metal) and element movement is problematic. Many high gain tubes have remarkably close spacing of the elments particulary cathode to grid1. Another phenomenum was tubes have materials to grab gasses and ions in them that only work well when hot. Temperature cycling was (and still is) a reliability issue. It was just much more easily noticed when you have more than ten thousand tubes and the differential temps from cold to hot (both filament and cabinet) are so large. The smaller mini and submini tubes were only somewhat better but smaller means closer in smaller space and prescreening weeded out infant mortality at the mechanical level. There were even special tubes developed that would better withstand being at cutoff for extended periods without losing emission. I have a few of these, they are pin compatable with 12AX7 duo triode but have slight differences as they are for extended operation at cutoff. Outside of computers I have years to commercial radio where tubes have had long standing in the transmitters especially at high power. Power cycling was and still is avoided. When the power has been removed such as for maintenance or expecially retubing (done based on time in service) the initial bring up is done slowly to warm up the "getter" (degassing) and to avoid thermal shocking parts. It's also not uncommon to see step starting built into the power supplied to avoid the harsh effect of surge loading the power lines or trying to bring 500uf of capacitor up to voltage in a half cycle (kills rectifiers!). The last bastion of widespread tube use was television and over time even tube sets (particulary those with series string heaters) adopted "instant on" circuits which ran the filaments at 50-70% when powered off and removed the operating DC. This reduced warmup time to nil and also improved the operating life of the tubes and the reciever greatly. Treated right tubes(valves) offer excellent reliability and lifetimes mistreaded and those can be drastically shortend. Allison

21 years, 1 month

3
3
0 0

local demolition of SAGE building

by leeedavison＠yahoo.co.uk

> For transmitting tubes (valves), yes, careful power-up is > important, but for computer rated minis, not so much. Not just the Tx valves, all the valves from the synthesiser on were protected, the exception was the audio pre-amp which were the cause of > 50% of shutdowns until replaced by solid state units. > If anything, the a slow power-up is probably protecting the > power supplies more than the tubes. Not in these transmitters. > Weak filaments that lead to burnouts and loose elements that > lead to shorts generally get weeded out quickly, as the tubes > die prematurely. New valves are always run for the guarantee life, modern valves are very poor, more than half are either DOA of fail within the guarantee period. Lee. . ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

21 years, 1 month

2
1
0 0

GPIB to Ethernet bridge

by aek＠bitsavers.org

here's his web site. http://www.rvhe.com/ If folks are interested in seeing a bridge, send him some email. He's looking for applications/customers for the board.

21 years, 1 month

1
0
0 0

Varisystems, Compugraphic

by wmaddox＠pacbell.net

The gentlemen who sold me the classic PDP-8 recently told me that he had worked in the early 70's at an outfit called Varisystems. They made dedicated typesetting systems, one of which he had installed to replace the PDP-8. He showed me a few bits and pieces that he had saved, including a wire-wrapped TTL CPU, a core stack, and a removable (technician-only) diagnostic panel. From the panel, I concluded that it was most likely a single accumulator machine. Has anyone else seen one of these machines or know any more about them? There was also an auction on eBay recently of some spare parts for a Compugraphics typesetter that indicated that it too was based on a proprietary CPU. The machine in question was from the late 60's. I had never heard of them until the 80's, when they were building systems around the PERQ (!!) and funding some development work at CMU. --Bill

21 years, 1 month

4
4
0 0

Question of Book Value

by aek＠bitsavers.org

A signed copy in good condition of Thornton at $125 is on the low end of the price range.

21 years, 1 month

1
0
0 0

Question of Book Value

by jrkeys＠concentric.net

Does anyone have a suggestion of the value of a signed J. E. Thornton "Design of a Computer: The Control Data 6600" book? Some is trying to sell one for $125. Any ideas? Thanks

21 years, 1 month

1
0
0 0

tk50's and dlt

by aek＠bitsavers.org

I'd be real careful running them on a "fast" drive. I just tried to archive about 120 TK50s and almost half of them stuck to the head because of the coating coming off and gumming up the head. -- I had exactly the same experience a few months ago. The formulation of TK50s appear to 'shed', dumping residue when the tape reverses. If you are going to try it again, find a drive where you can easily access the head, so that you can clean it before EVERY attempt to read a tape.

21 years, 1 month

2
1
0 0

local demolition of SAGE building

by leeedavison＠yahoo.co.uk

> And as found with Colossus, it's power cycling that really > kills them, so keep that to a minimum and they tend to last > pretty well. The fail rate can be reduced significantly by bringing the filament supply up slowly, over a couple of minutes, and then applying the bias supplies for a period, the longer the better, before the HT is applied. It's not unusual to see lifetimes of 150,000+ hours on transmitter valves using these techniques and that's on valves power cycled a few times each day. Lee. . ___________________________________________________________ How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com

21 years, 1 month

3
3
0 0

32332 CPU pinout wtd.

by julesrichardsonuk＠yahoo.co.uk

Anyone have it? PSU circuitry checks out for the Whitechapel CG-200 but it seems reluctant to switch on; for starters I want to check the CPU board for power and reset... cheers Jules

21 years, 1 month

1
0
0 0

Found in a spam... (ontopic, really!!!)

by James＠jdfogg.com

> "Someday we'll discover a dinosaur nest in Arizona and right > next to the fossil will be a stone-etched PRIMOS manual. It > was probably PRIMOS that caused the dinosaurs to die off in > the first place. -- Ari Rapkin's uvacs quotes" I worked for Pr1me for a few years. I rather like PRIMOS.

21 years, 1 month

3
4
0 0

What is an HP98616?

by keith＠saracom.com

For what its worth, I have access to a stack of HP 300 machines at work. I think they are mainly 310 machines. I have keyboards too. I have been given the OK to do with them as I please. Unfortunately, we have only 1 drive and its in use in a HP Rocky Mountain Basic app. at that. If I ever finish my Labview port, its going home with me :) Anyway, if anyone is interested, $20 each (my time) plus actual shipping costs. If you are in Lexington KY, stop by and grab one or two free!. BTW, I think it boots the disk. Least it did on my diskettes. I will have to check to see which option they are. Max > I've just come across an HP box containing 5 3.5" >floppies. They all have > original HP labels on them. > > All the labels contain the following > > Hewlett-Packard > 9000 Series 200/300 > 98616A Opt. 045 > BASIC 5.1 > > The rest of ithe label depends on the disk : > > System Disk > Pat No 98616-10500 Rev. 5.1 > > > Drivers + Language Ext > Part No 98616-10501 Rev. 5.1 > > > Utilities Disc > Part No 98616-10502 Rev. 5.1 > > HFS Utilities > Part No 98616-10503 Rev. 5.1 > > > Manual Examples Disc > Part No 98616-10504 Rev 5.1 > > > Anyone know what it is, and what machine it runs on? > > -tony > > > > ------------------------------ > > Message: 4 > Date: Sun, 24 Jul 2005 01:25:59 +0100 (BST) >From: ard at p850ug1.demon.co.uk (Tony Duell) > Subject: Re: What is an HP98616? > To: cctalk at classiccmp.org > Message-ID: <m1DwUJf-000IyQC at p850ug1> > Content-Type: text/plain > >> >> >> 98616A Opt. 045 >> BASIC 5.1 >> >> -- >> >> >> HP BASIC verison 5.1 >> >> Should run on 200's and 300's > > I'd guessed that much :-) Is this a bootable system, or >does it run under > something else? I've noticed that these disks appear to >have LIF > filesystems on them. > > What does the Opt 045 mean? > > -tony > > >

21 years, 1 month

1
0
0 0

Retroarchive.org

by jrice54＠vzavenue.net

Gene Buckles's retroarchive.org seems to be down. Does anyone know if it's permanent and did anyone mirror it? James -- www.blackcube.org The Texas State Home for Wayward and Orphaned Computers

21 years, 1 month

4
3
0 0

disk versus disc

by tradde＠excite.com

--- On Sun 07/24, Gene Ehrich < gehrich at tampabay.rr.com > wrote: From: Gene Ehrich [mailto: gehrich at tampabay.rr.com] To: cctalk at classiccmp.org Date: Sun, 24 Jul 2005 09:08:56 -0400 Subject: Re: disk versus disc At 08:04 AM 7/24/2005, you wrote: >Curiosity for the day - is there any difference between the use of disk >and disc when describing floppy drives, hard drives etc.? my take Disk = floppy or hard disk Disc - some people use it to describe a CD. Imagine it started with a spelling error ================================= Gene Ehrich gehrich at tampabay.rr.com I don't agree. I remember seeing both spellings long ago, like back in 1971 (long before CDs), and wondered then which was or is correct. Seems like both are used quite readily. I don't have a problem with either spelling. Tim R _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!

21 years, 1 month

2
1
0 0

disk versus disc

by GOOI＠oce.nl

Hmm, my guess, this is a UK/US spelling thing. Other words that come to mind are center/centre, program/programme, and then all the verbs with z/s, like recognize/recognise. just 2c, - Henk, PA8PDP. -----Original Message----- From: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic and Off-Topic Posts Sent: 24-7-2005 15:08 Subject: Re: disk versus disc At 08:04 AM 7/24/2005, you wrote: >Curiosity for the day - is there any difference between the use of disk >and disc when describing floppy drives, hard drives etc.? my take Disk = floppy or hard disk Disc - some people use it to describe a CD. Imagine it started with a spelling error ================================= Gene Ehrich gehrich at tampabay.rr.com

21 years, 1 month

1
0
0 0

Blue Panel PDP-11/35 pictures

by wacarder＠earthlink.net

I've posted some pictures of the blue panel 11/35 and a PDP-8a that I recently acquired and got up and running. The pictures are at: http://www.woffordwitch.com/PDPCollection.asp Click on the Blue Panel PDP-11/35 link. Ashley

21 years, 1 month

1
0
0 0

Compupro progress / Console questions ?

by ajp166＠bellatlantic.net

> >Subject: Compupro progress / Console questions ? > From: Dave Dunfield <dave04a at dunfield.com> > Date: Sun, 24 Jul 2005 11:06:07 -0400 > To: cctalk at classiccmp.org > >Hi Guys, > >I disassembled the boot ROM, and rebuilt it with some output to >show what was reading from the FDC. > >I determined that it was aborting the READ command with a "Drive >changed Ready State during command". I tested the SA-851 drives on >a different machine, but it appears they are incompatible with or >not jumpered correctly for the Compupro controller. known but forgotton problem in the 8" world. 765 has a READY sense line and the 851 is know for changing state of the line during select. Solution, force ready at the board (jumper) and don't use it. READY was for detecting disk changes. >According to Compupro Docs, the Console port is USER 7 - I have >setup the board to respond to users 4-7, which is the default setup >requireed for the console shows in the Compupro docs. As noted >above, I can select user7 and talk to the console correctly, which >would suggest that this is all working correctly. It is likely initing the ports but may not use any of them. It's possible the bootable media may use a different port scheme. Its likely a difference between the boot roms and the BIOS code once the boot transfers to the OS. I assume based on the CPU your runnig CP/m-86 (or any DRI -86) as the boot roms load a loader then load the OS (bios and all). So booting is multi step code. Allison

21 years, 1 month

1
0
0 0

disk versus disc

by pete＠dunnington.u-net.com

On Jul 24 2005, 12:04, Jules Richardson wrote: > > Curiousity for the day - is there any difference between the use of disk > and disc when describing floppy drives, hard drives etc.? > > The majority of people seem to use disc, but the use of one or the other > doesn't seem to be a regional thing. You'd probably find most Americans would prefer "disk", and "disc" would probably be found mainly in UK. Originally "disc" was the English spelling (from the Latin "discus"), and "disk" was American. Acorn were obsessive about using the "disc" spelling, but the distinction is long gone for most people. Even the OED lists both and has done since at least the early 80s. The difference in usage has nothing to do with differences between floppies, mini-floppies, micro-floppies, hard drives, or CDs (though CDs are "Compact Discs"). -- Pete Peter Turnbull Network Manager University of York

21 years, 1 month

1
0
0 0

Teledisk replacement

by dave04a＠dunfield.com

If anyone is interested in playing with it, my ImageDisk replacement for Teledisk is getting to the point where it can backup and restore pretty much everything I've been able to do with Teledisk (although it doesn't quietly make garbage images from unreadable/incompatible disks like Teledisk) ... still very preliminary, however if anyone wants to play with it, drop me a line. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 1 month

1
0
0 0

Compupro progress / Console questions ?

by dave04a＠dunfield.com

Hi Guys, I've made some progress on the Compupro system. This is a Godbout/Compupro S-100 system with: 8086/87 CPU DISK1 Floppy Disk controller Interfacer4 I/O Disk2 and Selector Channel (for HD - not installed) The problem I first posted what that it would select the drive with no disk in the drive, but not with a diskette! I disassembled the boot ROM, and rebuilt it with some output to show what was reading from the FDC. I determined that it was aborting the READ command with a "Drive changed Ready State during command". I tested the SA-851 drives on a different machine, but it appears they are incompatible with or not jumpered correctly for the Compupro controller. I hooked up a more modern 8" drive, and now the system goes through the booting motions reliably. In doing my debug, I also confirmed that the console port on the Interfacer 4 is working correctly (thats what I used for the debug output). According to Compupro Docs, the Console port is USER 7 - I have setup the board to respond to users 4-7, which is the default setup requireed for the console shows in the Compupro docs. As noted above, I can select user7 and talk to the console correctly, which would suggest that this is all working correctly. The DISK1A docs say: Switch 3 position 1 should be ON to use the "System Support 1" as the console, and OFF to use an Interfacer 3 or 4, user 7 as the console. I have checked that this switch is OFF, and that the bit is actually not grounded. When I boot the system, I see the RTS+DTR lines come up on all three serial ports, however I never get any console output. Either the console configuration does not match tbe boot disk, or the system is crashing/hanging during startup. The disks I am using are original Compupro distribution disks (Can't make copies yet), labled: Serial# C86-272-1854 Version: CP/< 86 (P0 in handwriting) CP/M 86 1.1 SYSTEM MASTER Disk Number 1 Single Sided - 1024 B/S Serial# C86-0272-1854 Version: 1R CP/M 86 SYSTEM MASTER Disk Number 2 of 2 Single Sided - 1024 B/S Disk 1 appears to do nothing, however Disk 2 is obviously booting - it recalibrates, reads a bit, seeks out a bit and reads some more, then seeks way out to read a bit more and back to near Track 0 - or something like that. Part way though this the RTS+DTR lights come up on the serial ports. Does anyone have any ideas as to what could be going wrong? It looks like all of the hardware is working. Anyone got a known good CP/M 86 disk for Compupro with Inerfacer 4 as the console? Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 1 month

1
0
0 0

Apple II vs Apple II+

by marvin＠rain.org

It sounds like I need to clarify :). The models I have are the Apple II (?, this is what started this thread), Apple II+, Apple //c, Apple //c+, Apple //e, Apple //e enhanced, Apple 3, Lisa 2, Mac 128, Mac 512, and the Mac Plus. This is where I intend to stop the Apple stuff and I've gotten rid of most of the others. I tend not to keep track of the PC board revisions. I guess from a historical perspective, that would be something worth documenting. But I am not an Apple person and thus not the person to do it. At any rate, I'll be downsizing the extra Apple computers on VCM as I continue to make room to play with the stuff *I* want to play with! > From: Fred Cisin <cisin at xenosoft.com> > On Thu, 21 Jul 2005, Marvin Johnston wrote: > > machines? If I indeed have the Apple II, then all I am looking for will > > be the Bell & Howell Black Apple II+ to complete the Apple II series of > > machines through the Apple //e enhanced. > > COMPLETE?? > perhaps someone could list all of the motherboard changes and keyboard > variants

21 years, 1 month

2
1
0 0

tk50's and dlt

by akb+lists.cctalk＠mirror.to

Hi-- I've got a pile of tk50's I'd like to preserve the contents of. Maybe 300 or so. what's the fastest drive for reading them? I have a qbus tk70, and probably a tkz-50 somewhere, but if it could read them faster, I'd be perfectly willing to acquire a tz30 or a dlt. Surplus dlt stackers like a tz887 are pretty cheap these days; could one of those do the job? format wise, many of the tapes are vms sw install kits. is there a way (ie, existing sw and formats) to archive these such that new install tapes could be cut without needing a vms system to do it? --t.i.a. --akb

21 years, 1 month

3
2
0 0

PDP11/10 pictures

by quapla＠xs4all.nl

Forgot to add picture links, the pics can be found at www.groenenberg.net/tmp/pdp1110_1.jpg www.groenenberg.net/tmp/pdp1110_2.jpg www.groenenberg.net/tmp/pdp1110_3.jpg Ed

21 years, 1 month

2
1
0 0

Retroarchive.org

by jrice54＠vzavenue.net

> Gene Buckles's retroarchive.org seems to be down. Does anyone know if > it's permanent and did anyone mirror it? > > James I guess I should have asked Gene directly. -- www.blackcube.org The Texas State Home for Wayward and Orphaned Computers

21 years, 1 month

1
0
0 0

What is an HP98616?

by ard＠p850ug1.demon.co.uk

I've just come across an HP box containing 5 3.5" floppies. They all have original HP labels on them. All the labels contain the following Hewlett-Packard 9000 Series 200/300 98616A Opt. 045 BASIC 5.1 The rest of ithe label depends on the disk : System Disk Pat No 98616-10500 Rev. 5.1 Drivers + Language Ext Part No 98616-10501 Rev. 5.1 Utilities Disc Part No 98616-10502 Rev. 5.1 HFS Utilities Part No 98616-10503 Rev. 5.1 Manual Examples Disc Part No 98616-10504 Rev 5.1 Anyone know what it is, and what machine it runs on? -tony

21 years, 1 month

4
11
0 0

What is an HP98616?

by aek＠bitsavers.org

here is a picture of the discs, with the doc set http://hpmuseum.net/display_item.php?sw=26

21 years, 1 month

1
0
0 0

Weird S100 memory board problem

by rcini＠optonline.net

All: I have a CompuPro/Godbout RAM14 (16kx8) board, arranged in 4 banks of 4k starting at 0. I ran a memory test program on it and it shows address 0x3000 as failing; when you look at data written, it appears that BIT 0 is bad. So, I ordered some 2147 chips from JDR and swapped the bad chip. It still fails the same bit. So, I swapped it with another chip in the row, and it fails again. It passes at address 1000 and 2000, so it can't be an address bit buffer chip. Any ideas? Where should I look next? Thanks. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

21 years, 1 month

3
3
0 0

Scans of DECUS 12-bit SIG #1 to 27 available

by aek＠bitsavers.org

http://www.bitsavers.org/pdf/dec/decus/pdp8/12-bit_SIG/fiche If anyone has copies of #28 onwards, I would like to get copies to scan and add to the archive.

21 years, 1 month

1
0
0 0

PSU schematic of the PDP-11/05 (11/10) needed

by ed＠groenenberg.net

Hi All, I have a PDP-11/05 (11/10) in a 5.25" box version which I'm putting together. It's going to be equipped with 8Kb of core and a RX02 floppy interface. When powering up, led's come on, but there is not much action to get. Look like the -15V of the PSU is not working properly. The PSU is a different one compared to the well known bricks used in BA11 boxes. This one delivers +5V, +15V and -15V and is labelled 5409728. Anybody have a schematic of this PSU by any chance? Thanks, Ed

21 years, 1 month

3
4
0 0

Apple?

by cb＠mythtech.net

>Now I'm not an expert on these, indeed I know nothing at all about apples, >but these look pretty weird to me - are they actually what they say they >are, and really common? eBay item 5219329581 (expensive as usual, so no >bids) for three linotype boxes, one of which has a disc drive with an apple >logo on it. (Listing has some larger pics linked from it). I don't think they are Apple's. Linotype made printing presses didn't they (still do?). Could these be interfaces for said printing presses. Early DTP type stuff. Maybe one was specifically retrofitted with an Apple Disk II drive for loading Apple files onto the press system. -chris <http://www.mythtech.net>

21 years, 1 month

8
17
0 0

Facit tape reader

by cc＠corti-net.de

Hi, does anyone have the service manual for the Facit 4001 paper tape reader in electronic form? It's a dielectric reader with a speed of 1,000 chars/sec. Christian

21 years, 1 month

1
0
0 0

Apple I on ebay - this time it's for real.

by tosteve＠yahoo.com

Only $20,000 - includes wooden box. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5791473252&category=8007… Same thing: http://tinyurl.com/bb4dl ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

21 years, 1 month

3
2
0 0

Weird S100 memory board problem

by ajp166＠bellatlantic.net

> >Subject: Weird S100 memory board problem > From: "Richard A. Cini" <rcini at optonline.net> > Date: Fri, 22 Jul 2005 22:57:54 -0400 > To: CCTalk <cctalk at classiccmp.org> > >All: > > I have a CompuPro/Godbout RAM14 (16kx8) board, arranged in 4 banks >of 4k starting at 0. I ran a memory test program on it and it shows address >0x3000 as failing; when you look at data written, it appears that BIT 0 is >bad. > > So, I ordered some 2147 chips from JDR and swapped the bad chip. It >still fails the same bit. So, I swapped it with another chip in the row, and >it fails again. It passes at address 1000 and 2000, so it can't be an >address bit buffer chip. > > Any ideas? Where should I look next? Sounds like a data buffer problem either in the data in lines or data out lines. Or it could be the data in or out line for that bit is bad to the chip (socket or open trace). Allison Allison

21 years, 1 month

1
0
0 0

Repairing IC pins

by philpem＠dsl.pipex.com

Hi folks, Does anyone know of a way to repair IC pins that have been broken off at the point where they leave the IC casing? I've got a couple of chips with missing pins here and was just wondering if it was possible... Thanks. -- Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, philpem at philpem.me.uk | ViewFinder, 10BaseT Ethernet, 2-slice, http://www.philpem.me.uk/ | 48xCD, ARCINv6c IDE, SCSI ... Anything not nailed down is a cat's toy

21 years, 1 month

4
4
0 0

PRIMOS (was Re: Found in a spam... (ontopic, really!!!)

by James＠jdfogg.com

>> -----Original Message----- >> James wrote... >> I worked for Pr1me for a few years. I rather like PRIMOS. > > Ya know, I gotta say of all the OS's I've worked on, PRIMOS > was one of my favorites. Love that OS! > > I still have a well used System Subroutines Reference Manual, > a PR1ME 50-series technical manual, and a few others. I guess > I'm saving them on the offhand chance that someday I'll > acquire a running PR1ME system :> > > James - did you know people in the St. Louis Pr1me office? > The folks I knew were Rose Huber, Bob Rowe, Jon > Kristofferson, Joe Condraci. I worked as a manufacturing engineer in Framingham Massachusetts. I checked/tested/fixed ECO's and did QA on CPU boards. It was one of my first (paid) computer jobs while I was still in college. I only knew some manufacturing people, and I'm sure I don't remember their names. I'm not even sure what products I worked on since we used project names like Cheetah and Tiger (the two I remember). ---- There are only 10 types of people in the world, those who understand binary and those who don't.

21 years, 1 month

1
0
0 0

PRIMOS (was Re: Found in a spam... (ontopic, really!!!)

by aek＠bitsavers.org

> Has anyone archived PRIMOS install media (for any of their machines)? > PR1MEs themselves are hard enough to come by, but OS tapes seem to have > totally vanished... Hope so... I know several ex-Prime employees, still have lunch with a few frequently and they say they have tapes.... -- If you have your drive going, these would be a good thing to archive. Any tech docs on the hardware would help the guy working on the simulator, also.

21 years, 1 month

2
1
0 0

PRIMOS (was Re: Found in a spam... (ontopic, really!!!)

by aek＠bitsavers.org

> Has anyone archived PRIMOS install media (for any of their machines)? yes. A little bird told me a few weeks ago about someone trying to get PRIMOS running in simulation.

21 years, 1 month

1
0
0 0

Of rats and the Commodore 64...

by bpope＠wordstock.com

Here are a few pictures of a Commodore 64 still in use today: http://madscientistroom.org/drupal/Retro/C64/Rats Someonle else posted recently about Spam + classic computing... I just received some spam that said "Rats drown in WordStar"... That's all I see of the message in elm. Cheers, Bryan

21 years, 1 month

8
8
0 0

PDP 11/35 front panel plexi wanted

by wacarder＠earthlink.net

Does anyone have a good front panel plexi for a PDP-11/35 21" chassis? I recently acquired an 11/35 with a blue front panel. Today I did a minor amount of tinkering and got this 11/35 up and running, booting RT11, XXDP+, and RSTS/E from RL02 packs. Now I want to switch out the front panel so that it will look like the standard 11/35. I have a spare front panel plexi for a 21" chassis, but it says 11/40. I also have a spare 11/35 front panel plexi, but it is for the 10 1/2" chassis. Is there anyone out there who would like to trade me a 21" chassis 11/35 plexi for my 10 1/2" 11/35 plexi? The keyhole is in a different position on these two varieties of front panel. If anyone has a PDP-11/35 front panel plexi for a 21" chassis they would like to sell or trade, please contact me off-list at wacarder at usit.net. Thanks, Ashley

21 years, 1 month

1
0
0 0

Decitek Reader and Remix punch

by rigdonj＠cfl.rr.com

At 12:04 PM 7/22/05 -0400, you wrote: >Today I obtained a Genrad 1797 programming station. It consists of a PDP-8a, 3 RK05s, a Decitek paper tape reader, a Remix paper tape punch, and a Genrad interface unit. Also with the system is a DecWriter III and 3 RK05 16 sector packs, as well as an alignment pack. He threw in alignment pack? Nice! It's probably worth $300 by itself. > >I have not begun to study the system yet. Quick questions: > >1) The Decitek reader appears to have a serial (EIA / RS232) interface. Can someone point me to some documentaion on how this might be interfaced to a PDP-11? > >2) Same question as #1, but for the Remix paper tape punch Can you see what cards they're connected to? > >3) What were these GenRad programming stations used for? They were very big, very expensive and very sophistaced circuit card test stations. I looked at one at Thom's and it was far larger than your complete PDP-8. > >4) What is the purpose of the GenRad 1795-3010 interface unit? Probably a TTL interface. Unfortunately I didn't keep any of the GR docs. There were just too many of them and I would have had to leave some^H^H^H^H MORE of the DEC stuff to bring them. I have some info for you about the RK-05s in Melbourne. I'll e-mail you directly about them. Joe > >BTW, the system looks to be in good condition and was said to be running before it was decomssioned just a few months ago. Once I get a 30A 4-prong receptacle installed for it, I'll fire it up and see what it's all about. There is a boot pack for it. > >Any help or pointers on where to find information on the Decitek reader, Remix punch, and GenRad equipment in general would be greatly appreciated. > >Thanks, >Ashley >

21 years, 1 month

1
0
0 0

I'm King of the DSD-440s!

by rigdonj＠cfl.rr.com

I went to Melbourne today to pickup some DEC rack slides for Jay. I didn't find much at the first place that I stopped except a pile of HP stuff. I called jay to see if he was interested in any of it and was just poking around while I was talking to him on the phone. THEN I looked over in a basket of scrap and spotted two DSD-440s! I grabbed both of them of course. Next I headed to the place that had the rack slides. When I got there I spotted this <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/front.jpg>. I thought it was some kind of DEC floppy drive so I wasn't too excited till I looked in the back ans saw this <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/FD%20inside.jpg>. Wahoo! Another DSD-440! I brought all three home of course. That makes SIX sitting in my living room! (Yeah, the OL isn't too happy!) I picked up a CRAP LOAD of DEC rack slides. Yeah, Jay, you'll be happy <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/Slides.jpg>. I also spotted this <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/>. Warning there are some BIG pictures there. I wanted to capture as much detail as possible. It's a PDP-11/44 LOADED with cards and with a MPI 9448 cartridge drive and it >had< a DSD-440 drive it as well. I also captured these two beauties <http://www.classiccmp.org/hp/Stuff%20Found%20at%20Rogers/drives.jpg>. Joe

21 years, 1 month

2
1
0 0

Repairing IC pins

by dave04a＠dunfield.com

>Hi folks, > Does anyone know of a way to repair IC pins that have been broken off at >the point where they leave the IC casing? I've got a couple of chips with >missing pins here and was just wondering if it was possible... In a couple of cases where I've absolutely had to repair an IC with a pin broken off right at the casing, I have done the following: Scrape the plastic down a bit with a detail knife to expose slightly more metal. Tin the exposed metal without applying heat for too long ... Put the IC in the socket, and place a suitable "new" pin, or even a piece of suitably sized wire into the socket in place of the missing pin, cut it to just slightly more than meet the exposed metal. Using suitable tiny tools, bend it over to touch the tinned metal. It is important that it be in the right place without needing force to hold it there. Tack it into place with a quick application of iron and solder. Such a repair has little mechanical strength, which is why you do it "in place" - If you ever have to remove the chip again, chances are the replaced pin will break off at the solder joint. I also wouldn't trust it for high longevity in a rough environment (or even a normal one), although I have had a couple such repairs running for quite some time, allowing machines to be run which would otherwise be "waiting on parts" ... Regards, -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

21 years, 1 month

2
1
0 0

Apple II vs Apple II+

by marvin＠rain.org

In cleaning out one of the closets, I ran across a number of Apple II+ machines and what I suspect might be an Apple II. The top cover has the Apple II logo on one of the machines and it looks identical to the Apple II+. Is there an easy way I can tell the difference between the two machines? If I indeed have the Apple II, then all I am looking for will be the Bell & Howell Black Apple II+ to complete the Apple II series of machines through the Apple //e enhanced.

21 years, 1 month

3
3
0 0

Repairing IC pins

by dwight.elvey＠amd.com

>From: "Paul Koning" <pkoning at equallogic.com> > >>>>>> "Dwight" == Dwight K Elvey <dwight.elvey at amd.com> writes: > > Dwight> ... I have a number of RAM IC that are > Dwight> gradually failing because they have the iron cored pins. I > Dwight> guess these were cheaper ... > >Probably not. Chances are the pin is actually made of Kovar or some Hi Paul No, these are made with iron. It clings solidly to a magnet. The cores are definitely form one of the iron oxides. These are on plastic and not ceramic packages. Not many materials cling that well to a magnet, other than iron that I know of. Dwight

21 years, 1 month

2
2
0 0

11/34a help

by dundas＠caltech.edu

Recently recovered a /34a with the following configuration: /34a-DE with KY11-LB M9301-YF terminator/boot M7856 DL11-W RK11-D (with RK05F and RK05 drives) M7846 (with dual RX01) and the following that I'm not at all familiar with: Jorway Model 411 CAMAC? Looks like a Massbus cable going into it. Applied Magnetics Trendata memory board MM-135?: <http://dundas-mac.caltech.edu/~dundas/retro/DEC%20Docs/Board%20Scans/Unibus…> ACT quad board that appears to be 4 serial ports; it has 4x40-pin Bergs that sound link a Quadralink (?) that was mentioned recently on the list. Any information on these last three items would be greatly appreciated. I'm more familiar with LSI CPUs and /70 or /84 machines so the /34 should be fun. Thanks, John

21 years, 1 month

2
1
0 0

Jorway and LeCroy CAMAC manuals

by aek＠bitsavers.org

John's posting about the Unibus interface reminded me that something to watch for are the card and interface manuals for CAMAC crates. CAMAC was very popular in physics labs. There are lots of modules and crates around, but, as usual, no one saved the manuals.

21 years, 1 month

3
2
0 0

11/34a help

by aek＠bitsavers.org

> Jorway Model 411 CAMAC? Looks like a Massbus cable going into it. That would be a CAMAC (IEEE 585) crate to Unibus interface. CAMAC docs are much less common than the modules or interfaces, unfortunately.

21 years, 1 month

2
1
0 0

Repairing IC pins

by dwight.elvey＠amd.com

Hi What kind of package are we talking about? Plastic can be cut back by about 1/32" to allow connecting a pin from a scrap IC. ceramic is a little tougher. If the pin is one of those iron cored pins, you may not be able to get deep enough to get a non-corroded surface to solder to. Even ceramics can be carefully solders to and a small amount of hard epoxy applied to keep the strain off the solder joint that will be quite small ( epoxy like JB Weld is hard most clear epoxies are too flexible ). I have a number of RAM IC that are gradually failing because they have the iron cored pins. I guess these were cheaper but electrolysis between the plating and the iron rots them out from the inside making the pin very fragile. Dwight >From: "Philip Pemberton" <philpem at dsl.pipex.com> > >Hi folks, > Does anyone know of a way to repair IC pins that have been broken off at >the point where they leave the IC casing? I've got a couple of chips with >missing pins here and was just wondering if it was possible... > >Thanks. >-- >Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, >philpem at philpem.me.uk | ViewFinder, 10BaseT Ethernet, 2-slice, >http://www.philpem.me.uk/ | 48xCD, ARCINv6c IDE, SCSI >... Anything not nailed down is a cat's toy >

21 years, 1 month

3
2
0 0

New to list -- Many Issues -- Many Parts Available.

by maurice.smulders＠gmail.com

Pat Fitzpatrick wrote: > As for the HP64000s, the consoles are ok, but the disk drive drowned. From a quick search, I'm not real optimistic about finding another HPIB disk drive and I'm not too excited about plunging into this one to try and fix him (he was running when the waters came and he smells very bad). Has anyone ever taught a PC (for example) with a GPIB card to think it's a CS80 Drive?? Does anyone have a spare disk gathering dust? Failing that, does anyone (besides me) still use these things? The consoles are probably too heavy to ship, but I have lots of cards, software, manuals etc in working order if anyone needs them. > > I started a project on Sourceforge (softcs80) to do that. I found the specs on bitsavers (Thanks Al) and they don't look to terribly bad... If only a PCI GPIB card would be a bit cheaper... Kind regards, Maurice

21 years, 1 month

1
0
0 0

Grid 1520

by pmgroup＠telus.net

Hi Guys Just aquired a gridcase 1520, how do I remove the battery, and where might I find a battery? Frank D. Senior Projects Coordinator Perspective Management Group 33 Hazelton Avenue, Suite 110 Toronto, Ontario M5R 2E3 Tel: 416.208.0755 pmgroup at telus.net CONFIDENTIATILITY CONCERN: This message is intended only for use of the individual or entity to which it has been addressed and may contain information that is priveleged and confidential. If you are not the intended recipient, you are hereby notified that any dissemination, distrubution or copying of this communication is strictly prohibited. If this communication has been received in error, respond immediately by returning e-mail, and delete all copies of this material.

21 years, 1 month

4
3
0 0

Found in a spam... (ontopic, really!!!)

by zmerch＠30below.com

Spammers are getting pretty crazy trying to fool the word & bayesian filters, when you see stuff like this in a spam for "c1 at l1s t at bs".. "Someday we'll discover a dinosaur nest in Arizona and right next to the fossil will be a stone-etched PRIMOS manual. It was probably PRIMOS that caused the dinosaurs to die off in the first place. -- Ari Rapkin's uvacs quotes" (sorry for the funky wordwrap -- my xterm that runs mutt is 100chrs wide...) Oddly enough, I've gotten a few decent jokes from spams lately, too... Whatta weird Friday, "Merch" -- Roger "Merch" Merchberger | "Profile, don't speculate." SysAdmin, Iceberg Computers | Daniel J. Bernstein zmerch at 30below.com |

21 years, 1 month

1
0
0 0

FS: 2 NEC APC's available outside of Boston

by rich_bramante＠yahoo.com

In case anyone is interested.... http://boston.craigslist.org/sys/86152795.html __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

21 years, 1 month

1
0
0 0

Decitek Reader and Remix punch

by uban＠ubanproductions.com

Sounds like a nice system Ashley! --tom At 12:04 PM 7/22/2005 -0400, you wrote: >Today I obtained a Genrad 1797 programming station. It consists of a >PDP-8a, 3 RK05s, a Decitek paper tape reader, a Remix paper tape punch, >and a Genrad interface unit. Also with the system is a DecWriter III and >3 RK05 16 sector packs, as well as an alignment pack. > >I have not begun to study the system yet. Quick questions: > >1) The Decitek reader appears to have a serial (EIA / RS232) >interface. Can someone point me to some documentaion on how this might be >interfaced to a PDP-11? > >2) Same question as #1, but for the Remix paper tape punch > >3) What were these GenRad programming stations used for? > >4) What is the purpose of the GenRad 1795-3010 interface unit? > >BTW, the system looks to be in good condition and was said to be running >before it was decomssioned just a few months ago. Once I get a 30A >4-prong receptacle installed for it, I'll fire it up and see what it's all >about. There is a boot pack for it. > >Any help or pointers on where to find information on the Decitek reader, >Remix punch, and GenRad equipment in general would be greatly appreciated. > >Thanks, >Ashley

21 years, 1 month

1
0
0 0

New to list -- Many Issues -- Many Parts Available.

by Pat_Fitzpatrick＠pmc-sierra.com

Hi List, I've been a collector (and user) of obsolete computer systems for many years. This list looks like a great source of information. Anyhow... Until our basement flooded a couple of weeks ago, I had: IMSAI 8080 with NorthStar Disk, KSR33 Teletype and Lear-Siegler ADM3A Terminal A very strange home-built S-100 system Apple II plus with Pascal Language System Intel intellec 800 and MDS230 development systems Sun 3/160 Solaris (some version or other) HP64000 development systems with HP7912 disk HP9816 computer IBM PC and XT, 286, 386... (yeah, who cares) One thing I have learned form this experience is that computers do not, in general, swim well. Anyhow, I now have a whole lot of partially useful computers, boards, documentation, software etc. The only things I care deeply about are the IMSAI ('cause I've raised him from a pup) and the HP64000s (which I use as my logic analyzer and EPROM programmer -- among other things). The IMSAI box and the terminal are ok, but the disk drive (an SA400, I believe) and (worse) the box of floppies didn't make it. The drive might be salvageable, but I'm afraid the diskettes are toast. Does anyone out there have any 5-1/4 inch 10 sector (hard sectored) floppies? And a copy of the NorthStar DOS and BASIC that they'd like to sell/trade/etc? As for the HP64000s, the consoles are ok, but the disk drive drowned. From a quick search, I'm not real optimistic about finding another HPIB disk drive and I'm not too excited about plunging into this one to try and fix him (he was running when the waters came and he smells very bad). Has anyone ever taught a PC (for example) with a GPIB card to think it's a CS80 Drive?? Does anyone have a spare disk gathering dust? Failing that, does anyone (besides me) still use these things? The consoles are probably too heavy to ship, but I have lots of cards, software, manuals etc in working order if anyone needs them. As to the other stuff, some is good, some isn't but if anyone needs any parts, I might be able to help out. Pat Fitzpatrick

21 years, 1 month

8
8
0 0

RQDX3 manual?

by aek＠bitsavers.org

> Do anyone know if there is an RQDX3 manual on line? here is a scan from fiche http://www.bitsavers.org/pdf/dec/qbus/fiche/EK-RQDX3-UG-001_Nov85.pdf

21 years, 1 month

2
1
0 0

tek scopes

by jwest＠classiccmp.org

Ok, what am I missing here.... Can someone tell me why Tek 2246 scopes (4 channel 100mhz) consistently sell for MORE than Tek 2465 scopes (4 channel 300mhz)? It's time for me to upgrade my scope, and those were the two models I was considering. But I just don't see why the 2246 is worth more money than a 2465. Can anyone enlighten me? Jay

21 years, 1 month

5
7
0 0

82S131

by jwest＠classiccmp.org

Someone was looking for a source for the 82S131 chips here a few weeks ago, I forget who. I have a good source, email me off-list. Jay West

21 years, 1 month

2
1
0 0

knowledge base

by jwest＠classiccmp.org

The comment feature on the knowledge base is back working again. Jay

21 years, 1 month

1
0
0 0

Stuff for pickup in NE Philadelphia

by alhartman＠yahoo.com

I've got two for sure, possibly three barely used Wyse 60 Terminals which anyone who is willing to make the trip to NE Philadelphia is welcome to. I had gotten them in the hopes of using them as terminals to a Linux Box, but now... They are taking up too much room. I also have an IBM AT, current condition unknown. I think it's a 10mhz unit with at least a 10mb HDD and DOS on it. I believe I still have an original IBM AT Keyboard for it as well. It booted the last time I tried to use it. I *MIGHT* have a matching CGA monitor for it. Probably the Princeton Clone of the IBM Display. I also have a couple of TTL Monochrome Monitors. E-mail me off list to make arrangements. These are free for the taking. Thanks!!! I'm located near where Route 1 and the Penna Turnpike cross. Just south of the NE Border of Philadelphia. Al Hartman Phila, PA ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

21 years, 1 month

1
0
0 0

New to list -- Many Issues -- Many Parts Available.

by Watzman＠neo.rr.com

About those Northstar disks .... I'd consider cutting open the jackets, removing the mylar, rinsing it in clean water, drying completely (be careful not to dent/crease the mylar) and put the mylar into a new, cut-open jacket >from a soft sector 5.25" diskette. They will probably be ok. Hard-sector disks (both 5" and 8" of any type at all) are VERY hard to find. They do show up on E-Bay occasionally, but not often. I think that Pat Swayne of SEBHC (society of eight-bit heath(kit) computers) had some NEW 10-sector disks newly made last year. They are, however, expensive (almost $2 per disk), and I'm not sure if he has any left.

21 years, 1 month

1
0
0 0

Manual for Qualstar 1260S tape drive

by sdc695＠yahoo.com

I recently obtained a Qualstar 1260S (SCSI) 9 track tape drive. Lacking was both the power cord, and any documentation. It is as I expected, Ebay and all. Now I'm looking for a manual of some sort. Bitsavers DOES have a Qualstar section, but no info on the 1260S drive. I suppose I could just hook it up and hope for the best, but some documentation would be nice. I'd even make a copy of someone's original (I'm not very picky). Thanks for any help. -- Tom Watson tsw at johana.com ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

21 years, 1 month

1
0
0 0

Vintage people: Alan Kay laid off at HP

by news＠computercollector.com

http://www.siliconvalley.com/mld/siliconvalley/12187326.htm ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see: http://groups.yahoo.com/group/midatlanticretro/ Where did PDAs come from? http://www.snarc.net/pda/pda-treatise.htm *** Tell your friends about the (free!) Computer Collector Newsletter - 770 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 1 month

7
7
0 0

Mystery box

by msokolov＠ivan.Harhan.ORG

Ethan Dicks <ethan.dicks at gmail.com> wrote: > I don't own any, but I have seen them - a grid of 4x15 tiny pins. Yes, that's it. > No idea it was called a DB60, though. But aren't those 4 rows of tiny pins fitted into a DB size shell? If they are, that would make it a DB60... MS

21 years, 1 month

1
0
0 0

Mystery box

by msokolov＠ivan.Harhan.ORG

ard at p850ug1.demon.co.uk (Tony Duell) wrote: > In some catalogue, along with the DA26. I don't think I've seen either in > the flesh... I believe some Cisco routers have used DA26 for sync serial (WAN) ports. Then they switched to what they call DB60. For some time I was mad at them for calling it that ("There is no such standard as DB60, what connector is it *actually*?!"), but then I realised that they are actually correct - it is a DB size shell with 60 contacts inside. But of course even with this fact "DB60" still doesn't tell you how to make your own Cisco cables - for that you need to know that the actual connector is Molex and the Molex part number. I have the latter somewhere, so if someone wants it, I can look it up. (It took a LOT of social engineering to get that number out of Cisco!) MS

21 years, 1 month

3
2
0 0

Morrow MD-11 distro diskettes needed

by dwight.elvey＠amd.com

Hi It is likely that your backup software changed the updated bit on this file. Most loaders are too simple minded and are not able to handle simple changes like this in the file status fields. If you can find another machine with the ability to edit the disk, you can most likely modify this in the directory by editing this bit. And, why don't you subscribe? Dwight >From: staylor at smedley.mrynet.com > >I've just discovered that my MD-11 system won't boot due to some kind of >corruption, and I don't have boot diskettes or the distro. > >CP/M V3.0 Loader >Copyright (C) 1982, Digital Research > >CPMLDR error: failed to read CPM3.SYS > > >I had just completed a backup (or so I thought) using fullback, but when >powered down and started up again today the above message is the result. > >Does anyone have the distribution diskettes for the MD-11 that I could arrange >to get copies of or teledisk images of? Or possibly even just a boot >diskette/image for the MD-11? Tried my MD3 and MD2 diskettes already, but >as expected they don't boot the MD-11. > >I'd love to chat with others who have MD-11's as well. :) > >Please CC me directly, as I don't subscribe--only read the list via the web. > >Regards, >-scott >

21 years, 1 month

1
0
0 0

New to list -- Many Issues -- Many Parts Available.

by dwight.elvey＠amd.com

>From: "Pat Fitzpatrick" <Pat_Fitzpatrick at pmc-sierra.com> > >Hi List, > >I've been a collector (and user) of obsolete computer systems for many years. This list looks like a great source of information. Anyhow... > >Until our basement flooded a couple of weeks ago, I had: > >IMSAI 8080 with NorthStar Disk, KSR33 Teletype and Lear-Siegler ADM3A Terminal >A very strange home-built S-100 system >Apple II plus with Pascal Language System >Intel intellec 800 and MDS230 development systems >Sun 3/160 Solaris (some version or other) >HP64000 development systems with HP7912 disk >HP9816 computer >IBM PC and XT, 286, 386... (yeah, who cares) > >One thing I have learned form this experience is that computers do not, in general, swim well. Anyhow, I now have a whole lot of partially useful computers, boards, documentation, software etc. > >The only things I care deeply about are the IMSAI ('cause I've raised him from a pup) and the HP64000s (which I use as my logic analyzer and EPROM programmer -- among other things). > >The IMSAI box and the terminal are ok, but the disk drive (an SA400, I believe) and (worse) the box of floppies didn't make it. The drive might be salvageable, but I'm afraid the diskettes are toast. Does anyone out there have any 5-1/4 inch 10 sector (hard sectored) floppies? And a copy of the NorthStar DOS and BASIC that they'd like to sell/trade/etc? Hi Pat I think that the floppies will make it if you remove them >from the envelopes and rinse them off. I don't think there are any problems with being in water, otherwise. Most everything else should be cleaned up except switches and bearings. Mostly just washing the stuff with clean water and drying well. > >As for the HP64000s, the consoles are ok, but the disk drive drowned. From a quick search, I'm not real optimistic about finding another HPIB disk drive and I'm not too excited about plunging into this one to try and fix him (he was running when the waters came and he smells very bad). This is not good. Anything that was powered up when inundated is most likely in poor shape. Dwight Has anyone ever taught a PC (for example) with a GPIB card to think it's a CS80 Drive?? Does anyone have a spare disk gathering dust? Failing that, does anyone (besides me) still use these things? The consoles are probably too heavy to ship, but I have lots of cards, software, manuals etc in working order if anyone needs them. > >As to the other stuff, some is good, some isn't but if anyone needs any parts, I might be able to help out. > >Pat Fitzpatrick >

21 years, 1 month

1
0
0 0

Goodnight, OS/2...

by Richard.Cini＠wachovia.com

OK, the inevitable Slashdot-type question...when will IBM open license OS/2 (if at all)? There have been calls for this for years before IBM finally nailed the coffin shut. -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of 'Computer Collector Newsletter' Sent: Friday, July 15, 2005 11:42 AM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: Goodnight, OS/2... http://www-306.ibm.com/fcgi-bin/common/ssi/ssialias?infotype=an&subtype=ca&a ppname=Demonstration&htmlfid=897/ENUS905-163 Or for minimalists: http://tinyurl.com/acbp2 ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see: http://groups.yahoo.com/group/midatlanticretro/ Where did PDAs come from? http://www.snarc.net/pda/pda-treatise.htm *** Tell your friends about the (free!) Computer Collector Newsletter - 760 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 1 month

16
18
0 0

New to list -- Many Issues -- Many Parts Available.

by James＠jdfogg.com

> -----Original Message----- > Subject: New to list -- Many Issues -- Many Parts Available. > > Hi List, > > I've been a collector (and user) of obsolete computer systems > for many years. This list looks like a great source of > information. Anyhow... > > Until our basement flooded a couple of weeks ago, I had: <much misery snipped> You must be heartbroken - I know I would be. Any circuit boards that were soaked can be washed in a dishwasher. I've discussed this here before so I won't bore anyone with the details - but if you need details let me know. ---- There are only 10 types of people in the world, those who understand binary and those who don't.

21 years, 1 month

1
0
0 0

IBM Token Ring

by James＠jdfogg.com

> -----Original Message----- > Subject: IBM Token Ring > > Originally this topic was about Apollo TR but several > questions have come up about IBM TR. I happen to have spent > several years with different vendors of IBM Token Ring > hardware and IMHO am somewhat of an expert on the topic. I > would be glad to answer any in depth questions but I suspect > that the majority of the list members would be bored. On the > other had there is always the delete key. Either way, let me know. I spent a year working for Proteon. I got a good lesson in all things Token Ring too. I still love it, but I'm not running any at this time. I'm not sure, but I might be the first person to have witnesses TCP/IP routed on TR hardware (at least commercially). My understanding is that Proteon offered that ability before anyone else, and I prototyped the boards and tested them. ---- There are only 10 types of people in the world, those who understand binary and those who don't.

21 years, 1 month

1
0
0 0

BA123/RQDX3 floppy question

by ajp166＠bellatlantic.net

> >Subject: Re: BA123/RQDX3 floppy question > From: Pete Turnbull <pete at dunnington.u-net.com> > Date: Thu, 21 Jul 2005 00:54:51 +0100 (BST) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Jul 20 2005, 12:56, Brad Parker wrote: >> >> I have two other questions: >> >> - can I pull out the distribution board and pop it into another QBUS, >say >> on an 11/23+? > >Yes, it needs power and ground (for the terminators and buffers) but >has no other connections to the backplane. > >> - do I need the front panel 'thing' (the led board) or can I leave it >> disconnected? > >You need it. I can't remember if it's the READY line or the WR.PROT >that usually ends up in the wrong state otherwise, but one of them >needs to be there (the READY line has to be grounded, IIRC). > >You can kludge it pretty easily. The layout and schematic for the >M9058 distribution board are on my web site, along with the schematic >for the LEDS-and-switches circuit. > http://www.dunnington.u-net.com/public/RQDX/ Yes you do need the frontpannel disk insert. There is both write protect and online functions. The alternate is just hard jumper it for enable on both. Allison

21 years, 1 month

1
0
0 0

BA123/RQDX3 floppy question

by pete＠dunnington.u-net.com

On Jul 20 2005, 12:56, Brad Parker wrote: > > I have two other questions: > > - can I pull out the distribution board and pop it into another QBUS, say > on an 11/23+? Yes, it needs power and ground (for the terminators and buffers) but has no other connections to the backplane. > - do I need the front panel 'thing' (the led board) or can I leave it > disconnected? You need it. I can't remember if it's the READY line or the WR.PROT that usually ends up in the wrong state otherwise, but one of them needs to be there (the READY line has to be grounded, IIRC). You can kludge it pretty easily. The layout and schematic for the M9058 distribution board are on my web site, along with the schematic for the LEDS-and-switches circuit. http://www.dunnington.u-net.com/public/RQDX/ -- Pete Peter Turnbull Network Manager University of York

21 years, 1 month

1
0
0 0

Whitechapel CG-200

by julesrichardsonuk＠yahoo.co.uk

I've been offered one of these - anyone know anything about them? Google seems reluctant to divulge any info... We've got three Whitechapel MG-1 machines so I pounced on this one as a different example of the Whitechapel line - but I've been unable to find any info on it so far. As the MG-200 is appears to be a faster version of the MG-1, I'm assuming that the CG-200 is a variant on the MG-200 (likely with better video ability). The current owner was also told that it uses a Z8000 CPU, but I'm reasonably confident that it'll turn out to be a Natsemi 32016 like the other Whitechapel machines... We've got a few manuals for the MG-1, so hopefully it's similar enough that the docs will be relevant! cheers Jules

21 years, 1 month

6
17
0 0

Free: CBM PETs, disk unit, Sinclair QL (Abingdon UK)

by julesrichardsonuk＠yahoo.co.uk

Got this one the other day - we don't need any more PET or QL stuff, and he's given me permission to post here. Contact him directly if interested - he's got a couple of weeks before he moves apparently. cheers Jules -------- Forwarded Message -------- From: Chris Jones <member at chilemonster.freeserve.co.uk> Reply-To: member at chilemonster.freeserve.co.uk To: donations at retrobeep.org Subject: Donation offer Date: Tue, 5 Jul 2005 08:43:53 +0200 (CEST) Hi Jules, I have two commodore CBM computers from the 80s which still work (an 8032 and 4032 upgraded from and labelled 3008). There is also a 5.25" disk drive (working) plus manuals/books/software etc. Would you be interested in adding them to your collection, or know someone that would? I am moving house and will readily donate them - I dont really want them to end up in land fill! There is also a sinclair QL and memory expansion/manuals etc. Thanks Chris Jones Abingdon

21 years, 1 month

2
2
0 0

Repairing an HP 9810 (was Museums, etc)

by vp＠cs.drexel.edu

To help better understand Tony's (Duell) discussion of the 9810 repair, have a look at http://www.rheinfeld.de/andreas/9810.htm where Andreas also describes his repair of an 9810 using Tony's schmatics (available on the HPCC cdrom). **vp

21 years, 1 month

4
3
0 0

Response from buyer of "Apple-1" on eBay

by vcf＠siconic.com

I finally got a response from the buyer of that "Apple-1" on eBay a few weeks back. In a nut shell, he said he suspected it was probably not an Apple-1 but he thought he'd take a chance anyway, and when he received it his "intuition" was confirmed. He thinks he got a good deal anyway because he says it was some sort of homebrew electronic "music box". -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 1 month

2
1
0 0

Tek 4041 GPIB controller

by aek＠bitsavers.org

> Looking for information re the above 68000 based unit http://www.bitsavers.org/pdf/tektronix/404x/070-3918 -00_4041_sysCtlrOper_Jul82.pdf as always, if folks have other manuals that I could borrow to scan, I'm happy to put the results up on bitsavers.

21 years, 1 month

2
1
0 0

FA : Various stuff (DEC, HP (9810) stuff etc)

by birs23＠zeelandnet.nl

Just like Joe, cleaning up :-) http://search.ebay.com/_W0QQsassZsundown79 Stefan ------------------------------------------------------- http://www.oldcomputercollection.com

21 years, 1 month

1
0
0 0

FA : Various stuff (DEC, HP (9810) stuff etc)

by rimmer＠xs4all.nl

Just like Joe, cleaning up :-) http://search.ebay.com/_W0QQsassZsundown79 Stefan

21 years, 1 month

1
0
0 0

FA: Pile of DEC stuff including rack panel

by rigdonj＠cfl.rr.com

More cleaning up. <http://search.ebay.com/_W0QQsassZrigdonj> Joe

21 years, 1 month

1
0
0 0

Image Technology isa graphics board

by fzrfast＠bellsouth.net

Hello: Does anyone know where one might find an old Image Technology isa graphics board from the early 1980's? Jim Cox

21 years, 1 month

1
0
0 0

Ethan Dicks to speak at VCF Midwest

by GOOI＠oce.nl

That will be an interesting story to hear. However, I am not going to make a trip from The Netherlands ... will some sort of transcript be available afterwards? greetz, - Henk, PA8PDP. -----Original Message----- From: cctalk-bounces at classiccmp.org To: Classic Computers Mailing List Sent: 20-7-2005 18:18 Subject: Ethan Dicks to speak at VCF Midwest For those of you who've always wanted to meet Ethan, he'll be giving a great talk entitled "Classic Computing at the Bottom of the World" at the VCF Midwest. http://www.vintage.org/2005/midwest/speaker.php -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------ ------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 1 month

2
1
0 0

BA123/RQDX3 floppy question

by ajp166＠bellatlantic.net

> >Subject: BA123/RQDX3 floppy question > From: Brad Parker <brad at heeltoe.com> > Date: Wed, 20 Jul 2005 06:43:16 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > > >I aquired an aged BA-123 a while back. It has an RQDX3 and the >interesting "distribution board" for the MFM disks. > >The floppy (dual RX50) has a cable coming out of it which just hangs in >the air. > >I'm guessing that some kind soul removed a card which some how connected >the floppy cable to the disk distribution board. I say this because at >the end of the BA-123 backplane there is a spacer and then two "qbus >like" slots. The bottom slot has the MFM disk distribution board >connected plugged into it and the top slot is empty. > >Anyone have a clue about this? > >I'll probably ditch the RX50 in favor of a stock PC 5 1/4" drive but >I'll still have to connect it to the RQDX3 somehow. > >thanks! > >-brad That distribution board has a connector labeled RX50. The RQDX3 has a 50 pin cable that goes to that disti board and from there you should have the usual rats nest of 34pin (floppy), and 40/26pin (hard disks) from the distibrution board to drives. While your in there check the fans! Allison

21 years, 1 month

4
5
0 0

Ethan Dicks to speak at VCF Midwest

by vcf＠siconic.com

For those of you who've always wanted to meet Ethan, he'll be giving a great talk entitled "Classic Computing at the Bottom of the World" at the VCF Midwest. http://www.vintage.org/2005/midwest/speaker.php -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 1 month

1
0
0 0

Image Technology isa graphics board

by fzrfast＠bellsouth.net

Hello: Does anyone know where one might find an old Image Technology isa graphics board from the early 1980's? Jim Cox

21 years, 1 month

1
0
0 0

BA123/RQDX3 floppy question

by ajp166＠bellatlantic.net

> >Subject: Re: BA123/RQDX3 floppy question > From: Ethan Dicks <ethan.dicks at gmail.com> > Date: Wed, 20 Jul 2005 10:21:15 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 7/20/05, Patrick Finnegan <pat at computer-refuge.org> wrote: >> I think you mean 34/26pin for ST-506 interface hard disks. :) > >34/20? Ack, it's been a while since I've had to play with the disks. Thats a problem with VAXen the keep running and cases stay on. Seriously the last time I was in my uVAXII was four years ago to replay the TOY Clock battery. So as a consequence I forget actual number of wires in the MFM disk cables. After all it's only important if a disk dies. Allison

21 years, 1 month

1
0
0 0

Tek 4041 GPIB controller

by dogas＠bellsouth.net

From: "Joe R." <rigdonj at cfl.rr.com> > > only ever found ONE keyboard. I used to have a full set of manuals for the > 4041 including the service manual but I gave all of it to Mike Haas and I > think he's since sold them. I think my buddy in Sanford probably has > manuals for it but I don't know when I'll be over in that area again. First off, if Dennis gets to be 'Dennis K.', then I'd like to become 'Mike H.' in these cases too. Yep, I remember that 4041 well... I didn't get a keyboard or any tapes when I got Joe's machine, but as usual with Joe, there was some nice manualage included. Looked like a very robust BASIC & GPIB environment. You do need a keyboard or pre-programmed tapes to run it. It can auto-execute programs off tape, and a few line program there could redirect the console out a serial port... theorettically. That keyboard connector looked pretty easy to hack in a homebrew keyboard. I think the protocol is just serially coded ASCII codes at slow ttl levels, but I no longer have the docs or machine... Sorrry ;) - Mike: dogas at bellsouth.net

21 years, 1 month

1
0
0 0

local demolition of SAGE building

by James＠jdfogg.com

> >Plain and simple, this reporter did not do their homework. > > > > Hi > You forget, they write stories. You can say anything that > you like in a story. > Dwight Whoa buddy! You've asked for it now. Last time I made disparaging remarks in this list about our beloved and respected journalism community the crap rained down hard :-) ---- There are only 10 types of people in the world, those who understand binary and those who don't.

21 years, 1 month

1
0
0 0

Macintosh Plus - free...

by chrism3667＠yahoo.com

Hi, is it still available? Where are you? Thanks. --- plato computer <computer at officereach.net> wrote: > If someone wants a Macintosh Plus - (operational > condition unknown), > simply let me know, and I'll package it up and send > it to you. There's > an external disk drive by a company called MCS, but > that is unknown as > well. Just simply all I ask is that you reimburse > me for shipping. > > Aaron > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

21 years, 1 month

1
0
0 0

BA123/RQDX3 floppy question

by brad＠heeltoe.com

I aquired an aged BA-123 a while back. It has an RQDX3 and the interesting "distribution board" for the MFM disks. The floppy (dual RX50) has a cable coming out of it which just hangs in the air. I'm guessing that some kind soul removed a card which some how connected the floppy cable to the disk distribution board. I say this because at the end of the BA-123 backplane there is a spacer and then two "qbus like" slots. The bottom slot has the MFM disk distribution board connected plugged into it and the top slot is empty. Anyone have a clue about this? I'll probably ditch the RX50 in favor of a stock PC 5 1/4" drive but I'll still have to connect it to the RQDX3 somehow. thanks! -brad

21 years, 1 month

1
0
0 0

Next Mouse

by Mzthompson＠aol.com

On 14 Jul 2005, Jules Richardson <julesrichardsonuk at yahoo.co.uk> wrote: > You have more than one cube and slab? That's just greedy! ;-) How about two turbo slabs? How about if they have consecutive serial numbers? How about several spare mice and keyboards? BTW, I am planning on bringing the above to VCF Midwest 1.0 and it will be for sale. Actually greedy is when you have 113 Next machines. I couldn't help it though, a local university was about to drop them in the dumpster when I got wind of their plans. I rescued the whole lot and they now have new homes. Mike Thompson

21 years, 1 month

2
1
0 0

"Computer Notes" magazine

by brain＠jbrain.com

Trying to organize all the magazines I picked up a bit ago, I came across some issues of "Computer Notes". Jan 77, Jul-Nov 77, Jan 78. They look like a Pertec company produced mag about Altair projects. Has anyone ever heard of the magazine? Jim -- Jim Brain, Brain Innovations brain at jbrain.com http://www.jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!

21 years, 1 month

4
5
0 0

looking for a, or info on, Princeton scan doubler

by chrism3667＠yahoo.com

allowed the use of a 400 line monitor with a cga card (200 lines). If you have info on this type of device, an original schematic, or possible newer circuit/suggestion, please let me know. ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

21 years, 1 month

1
0
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb