test-drb

test-drb@ccmp.vtda.org

101090 discussions

by 0513307＠ptfe30.hro.nl

Hello, i am Michel Smit, I'm a VB5.0 programmer. Once there was a VB4DOS if i'm right. You should have a copy of it. Is it possible for me to recieve a copy of VB4DOS? My ICQ UIN: 3233370 My email: michel.smit(a)unforgettable.com Thanx already, Michel Smit. P.S. I have lots of software to trade with.

27 years, 11 months

Amiga Software, cont'd.

by poesie＠geocities.com

OK- another quick question- what model(s) of Amigas would this be used on? also, if I can get a hold of one or some, would it be worth it? -Eric From: Captain Napalm <spc(a)armigeron.com> > The Kickstart disks are essencially the first stage boot disks and load >the basic OS into memory. Later Amigas had most of this OS stored in ROMs >and the need for Kickstart disks went away. The Workbench disk is, for lack >of a better term, the desktop program (something like the Finder under >MacOS, or Explorer under Windows 9x).

27 years, 11 months

PDP-11 info needed.

by mbg＠world.std.com

>Last night I poked a little around the RA60 and the 11/34A that I want to >keep. I saw a cable ass'y attached to the RA60 which had two black cables >(about 7/8"wide x 3/8" thick) and relatively small plastic 8-pin >connector recepticles within a comparatively hefty backshell. Inside the >11/34A cabinet there were a group of four of the same small mating >connectors which had four flat, red cables running from that group into a >Unibus board in the the BA11 (forgot module number). A 12-foot long cable >with two 8-pin plastic connectors each within a large backshell was >laying inside the 11/34A box. I extrapulate from a couple of other >private msgs that this is probably the UDA50 interface. True? Sounds good to me... >Please tell me about this disk I/F. Any FAQ on it somewhere? RA60 is a removable disk, part of the RA series of MSCP (mas storage communications protocol) disks... MSCP is a Digital proprietary protocol, but if you check the uncommented source for the DU handler on RT-11, you'll find lots of info on how to program it (or at least you'll have a chance to figure it out -- it's uncommented) Other members of the family are the RA8x series and the RA9x series... >Also, I would like to find the same tech info or descriptions on the MSCP >interface which I understand the RL01s and RL02s have. MSCP was used for many disks put out by Digital, but not the RL01 or RL02... these disks are smarter than an RK05, but still required programming at the cylinder/head/etc level instead of abstract objects like blocks... >Looks like a J-11 chip on the CPU board in an 11/23 chassis that was >buried in the pile (darn little thing was so small compared to the 5000+ >pounds of other boxen that I forgot to mention it in my first msg.) >That's basically an 11/73 isn't it? You don't mean an '11/23' chassis... it may be a BA23, or a BA123 (or a BA-11). If you have a J-11 chip on a board, we'll need to know more about the board. Is it dual high? (KDJ11-A -- 11/73A). Is it quad high? (KDJ11-B -- 11/73B or 11/83, KDJ11-D -- 11/53, or KDJ11-E -- 11/93). Is there memory on the board? (KDJ11-D or KDJ11-E) Is there a space for a 40-pin chip? (FP chip, KDJ11-A and KDJ11-B) etc. Then again, you could tell us the M-number and we could tell you what it is... :-) Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry(a)zk3.dec.com | | Unix Support Engineering Group | (home): mbg(a)world.std.com | | Digital Equipment Corporation | | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 11 months

Amiga Software.

by poesie＠geocities.com

I ran across a box of 300 disks that were used on a classroom of Amigas (for an art school.) there's alot of unlabeled stuff, but also cryptic things like "TV/Text" etc. also, 4 disks that are as follows: Amiga Workbench v1.2 Amiga Kickstart v1.1 Amiga Extras / Amiga BasiC v1.2 Amiga Kickstart v1.2 can someone give me an idea as to what these are? especially the TV/text program. if anyone is interested, i could create disk images of these and dump them someplace on the web. -Eric

27 years, 11 months

Looking for VAX FAQs

by allisonp＠world.std.com

< > It may be repairable, but it's still dirt slow. We used to use ours to < < I thought this was classiccmp, and not high-speed-VAX-list :-). It was slow! However people liked them as a machine could be fitted to one 40" rack maybe two and run forever in a closet. That and the VAX archetectures ability to stand heavy loads and slow down gracefully made them good workhorse machines for many tasks. it upside was it used unibus perpherals, compact, ran under 10a@120V and was generally a 24x7x365 machine. For a lot of people they are nice as they get you a "real iron" vax and still fit it in a room. Allison

27 years, 11 months

PDP-11 info needed.

by allisonp＠world.std.com

At 00:26 08-07-98 +0100, ard(a)p850ug1.demon.co.uk (Tony Duell) wrote: < On another subject, in several of the PDP machines here there's an M7856 < module (the DL11-W option) designated as "SLU and realtime clock". What < exactly does SLU mean in this case? Serial Line Unit? Correct SLU= serial line unit and a DLxxxx is a standard serial interface for PDP-11 software. < "CONSOLE". It does have a cable running from the module connector out to < 25pin "D" connector bolted to the back of the cabinet which in turn has a < ten or 15-foot cable attached. Yep, serial console usually a printing console (la120) as printed logs go to console for some OSs (rsts and RSX-11) < There are a group of 16 D25 connectors on the back panel of the machine < (cabled to the two M7819's) obviously for the user terminals. Unlike the Yes, user serial lines one per. < IBM 9370 and HP 250/30 machines I have, on which the operator's console i < attached to one of the corresponding group of user terminal connectors, i < seems there typically is a separate serial console connector for the DEC < world just for the system operator. Is my thinking correct here? The system console is a unique device and all (rare exceptions) pdp11 systems expect it and its address and interrupt will always be the same. < The second M7856, what could that be for? The cable attached to that othe < M7856 has a connector on the other end with, IIRC, 6 or 7 pins inside a < flat, white nylon shell. Length of the cable is about three or four feet. < The nylon shell end connects to nothing that I can see anywhere. another serial line with a current loop (20ma) for some terminal or printer. Allison

27 years, 11 months

Looking for VAX FAQs

by cfandt＠servtech.com

Hi folks, Still busy rummaging through the truckload of PDPs and VAXen and peripherals and manuals, etc. I'm looking for any info sources to learn more about a VAX 11/730. FAQs are what I need. Web searches using Metacrawler and DejaNews yield rather meager results. Sites like the excellent PDP site: ftp://sunsite.unc.edu/pub/academic/computer-science/history/pdp-11/ are what I really would like to find. I know I have probably found a good home for the 11/750 but I am considering keeping the 730. First I need to do a heap of studying to check the completeness of the box and to more fully understand what peripherals and accessories I that should keep (which are already setting in the garage) or to search for. Could any of you folks help point me in the proper directions? Thanks for all your help and support so far. --Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA Member of Antique Wireless Association URL: http://www.ggw.org/freenet/a/awa/

27 years, 11 months

Looking for VAX FAQs

by mbg＠world.std.com

>On Wed, 8 Jul 1998, J. Buck Caldwell wrote: > Ethan Dicks wrote: >[...] >> >> > It will also run Ultrix (BSD UNIX). I recommend an old version, say, >> >1.1. >> >> Um... Ultrix is NOT BSD Unix. You may only have been saying that >>they're similar, however.... > >It is almost completely 4.2 BSD with some exceptions. And those exceptions are the 4.3BSD code which was ported... :-) Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry(a)zk3.dec.com | | Unix Support Engineering Group | (home): mbg(a)world.std.com | | Digital Equipment Corporation | | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 11 months

Amiga Software.

by maxeskin＠hotmail.com

Workbench is the Amiga Graphical Operating System, the synonym of Windows on a PC or Finder on a Mac. Kickstart is a low-level piece of software, that could be on ROM or floppy. I'm sure you can guess what Amiga BasiC is. I don't know about TV/Text. Were there any books? BTW, don't put them on the web, the copyrights still hold. I mean, go ahead if you want to, but Amiga has not made the stuff PD and doesn't intend to (Workbench is still in development and 5.0 is coming up) > I ran across a box of 300 disks that were used on a classroom of Amigas >(for an art school.) there's alot of unlabeled stuff, but also cryptic >things like "TV/Text" etc. also, 4 disks that are as follows: > >Amiga Workbench v1.2 >Amiga Kickstart v1.1 >Amiga Extras / Amiga BasiC v1.2 >Amiga Kickstart v1.2 > >can someone give me an idea as to what these are? especially the TV/text >program. if anyone is interested, i could create disk images of these and >dump them someplace on the web. > >-Eric > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

27 years, 11 months

VM/SP

by DSEAGRAV＠toad.xkl.com

This started as a joke, but turned into something interesting. Someone posted on alt.os.multics about setting a UNIX to pop up the VM/SP logo from /etc/issue. I did one better and crocked up a way to make UNIX actually act like VM/SP at the logon (Mutilated copy of telnetd and a new login program). The question is, what was VM/SP? I know it was IBMs, and it ran on large mainframes. Where can I find information about it? Oh, if you want to see the results of my screwing around (And my first hackery in C that ever worked!) telnet at ubani.umtec.com. -------

27 years, 11 months

PET 2001

by Philip.Belben＠powertech.co.uk

Right. Lets hope my mail software (Lotus Cack-Mail) doesn't crash just as I get near the end of this reply, as it did last time. First, all concerned should glance at Larry A's PET faq, the address of which he posted a few messages ago. Pete Turnbull wrote: > On Jul 7, 6:29, Doug Spence wrote: >> On Mon, 6 Jul 1998, Olminkhof wrote: >> > 8" screen >> >> Or is it 9"? I can't check mine because they are both locked in my >> father's bedroom at this hour. > > 9". All the ones I've seen were 9". I agree with Pete, not that it makes much difference. >> Supposedly the 2001N and 2001B came with 12" screens, but I've never seen >> one. No. Never. 12 inch screen on 4032 (or possibly 4016) and above only. >> I'm looking at an old copy (don't have a recent one on file) of Jim >> Brain's "Canonical List of Commodore Products" and notice that one of my >> PETs doesn't match any model on the list. From this list: >> >> PET 2001-4K 4kB, Chiclet Keys, Built-In Cassette, Black Trim. >> PET 2001-8K 8kB, Chiclet Keys, Built-In Cassette, Blue Trim, 9" screen >> PET 2001-16K 16kB, Chiclet Keys, Built-In Cassette, Blue Trim, 9" screen >> PET 2001-32K 32kB, Chiclet Keys, Built-In Cassette, Blue Trim, 9" screen First PETS: 2001-4 and 2001-8 (also called 4k PET and 8k PET). Blue trim, blue-white phosphor, mangled and rebadged cassette (I can't remember whose) that you open by lifting the lid. Then: 2001-4 and 2001-8 get Black trim and C2N cassette deck Then: Green screen. Next was the ROM upgrade. Usual models were 2001-8N, 2001-16N, 2001-32N, 2001-8B, 2001-16B and 2001-32B. These had full-sized keyboards and external C2N decks. In the UK, 2001-8N with tiny keyboard and built in C2N was common. This was not a new motherboard in an old case - the case was a different shape (slightly less tall). Larry has suggested that these might be the 2001-8K, K standing for Calculator (-style keyboard) (sic). All of these had small screens. >> PET 2001B-8 8kB, Business Style, no Graphics on Keys, 12" screen >> PET 2001B-16 16kB, Business Style, no Graphics on Keys, 12" screen >> PET 2001B-32 32kB, Business Style, no Graphics on Keys, 12" screen >> PET 2001N-8 8kB, Home Computer, Graphics on Keys, 12" screen, Num. Keys >> PET 2001N-16 16kB, Home Computer, Graphics on Keys, 12" screen, Num. Keys >> PET 2001N-32 32kB, Home Computer, Graphics on Keys, BASIC 4.0, Num. Keys. >> PET 2001NT Teacher's PET. Same as 2001N, just rebadged I've never heard of 2001NT. AFAIK, N = Non business keyboard. The top row of keys was !"#$%^&'() like the tiny keyboard machines - numbers were only on the number pad. B = Business keyboard. Top row of keys was 1234567890, shift gave you !"# etc. This meant you couldn't get some of the "graphics" characters that came from shift-! etc. Hence the reference to "Num. Keys" above. > Mine is just labeled "PET 2001-8K" I think, with no 'N' or 'B' anywhere, > but mine has a 9" screen and a full-size keyboard with graphics symbols. Strange. Full size keyboard with graphics symbols should be 2001-8N > I don't think Jim's list is quite correct. For a start, there were lots > of 2001 PETs with 9" screen and the graphics keyboard, without the Nor do I. All 2001 PETs had 9 inch screens. > cassette-beside-the-keyboard. I've got one here. And the /B and /N series > were called 3000's not 2001 everywhere except the USA. The 12" versions Are you sure? I thought the 2001-8N and 2001-8B got renamed 3008 a bit later. > didn't appear in the UK until later. According to my (USA) manual, the > 2001/B (aka 3000 here) was a 9" screen too. IIRC, the 4000 was the first > with a 12" screen, at least in the UK (USA might easily be different, of > course), and that's borne out by my manuals. The 12" screen version was > eventually called the 8000 series here, and had different firmware (and > up to 96K RAM I think, bank-switched). Um. The first with the 12 inch screen was the 8032. Different firmware and re-done video circuitry. Later some of that was put into 4032, making the "fat 40" Bank switched RAM made an 8096... > One of the differences between the business and home versions (apart from > graphics symbols on the keytops) was whether the machine powered up in > upper- or lower-case. Was it? That's weird! Even weirder, though, was the lower case implementation. Take a couple of steps back and get a wider view: PET had two internal character codes. Screen codes and "ASCII". Screen codes went from 0 to 127, and didn't include control codes; they then went from 128 to 255 in "reverse field" (inverse video). Bit 6 (the 64s bit) told you whether it was a shifted character or not. 0 to 31 were @, ABC...Z, [\], up arrow, left arrow. 32 to 63 were conventional ASCII. 64 to 127 were the graphics characters you got from shifting these. First problem - nowhere for lower case. PET, in translating ASCII (or PETSCII as it became known) into screen codes, didn't bother to implement lower case. First it checked for control codes (0 to 31 and 128 to 159) and then it ANDed the ASCII code with 63 and stuck it on the screen. Well, sort of. The ASCII codes for the shifted characters were displaced from the unshifted ones by 128 instead of 64. Now, lower case mode. Early PETs kept the bottom 128 ASCII codes exactly as they were. Lower case went in the top 128 - NOT where you'd conventionally put it (those who followed the algorithm above will have worked out that the conventional ASCII codes for lower case would display space, !"#$ etc.). Since lower case was implemented in the character generator only - an I/O pin went to an address line on the character ROM - you had to use SHIFT to get LOWER case. And that was the second problem. Later PETS swapped lower and upper case letters. So now ASCII codes 65 and up, which still mapped onto screen codes 1 and up, gave LOWER case letters, but you pressed SHIFT for upper case. However the OS and BASIC (one and the same, really) treated unshifted as letters, and shifted as meaningless graphics characters, whichever mode you were in. Confused? It is, isn't it! >> Note that at least the early PET 2001 machines came with a white display. >> I think some of the 'newer' ones came with green phosphor instead.(?) > > My 2001-8K is white phosphor. The full-size-keyboard ones were green. The common arrangement. But the colour change predated the ROM and Keyboard Size changes. Just. >> But there's a lot more to 'features' than outward appearance. The machine >> uses a 1.0MHz 6502. It has an 80-pin memory expansion port on the right >> side (the 40 pins on the top side are all ground). There's an external >> cassette interface at the back, for TAPE #2. > > On the later models, that's TAPE#1 and the TAPE#2 is an internal connector. > >> There's an IEEE-488 aka GPIB, HPIB >> interface on the back that was used for printers, disk drives, modems, and >> probably other stuff. There's a user port on the back which is similar to >> the user port on the VIC-20/C64. IEEE-488 to RS232 converters were very popular here, since PET had no serial port. Alternatively, software could be written to drive a pin on the user port serially. I know. I've done it. >> The original ROMs don't have a monitor or support a disk drive, but ugrade "Don't support a disk drive" is a euphemism for so many bugs you can't use it at all! >> ROMs (which I think came out in 1979?) fix both of those things. About then. The monitor - hex only - replaced diagnostic routines in the original ROMs. A listing was actually given in the original PET manual, but I couldn't get it to work whenever I typed it in... >> I don't have a machine with BASIC 4.0, so I don't know how that starts It says "COMMODORE BASIC 4.0" but I can't remember whether between *** or ###. >> up. Upgrade ROM machines also have a Microsoft easter egg in them >> whcih is missing from the original ROMs.) Indeed. Type WAIT 6502,100 > There was a very-short-lived BASIC-2, and BASIC-3 (more-or-less the upgrade > ROM set) was around for a while before 4. 4 has extra commands for the > disk, instead of having to use the generic IEEE channel commands, but > otherwise it's almost the same as 3. I have heard all sorts of numbering schemes for BASIC versions. The only thing they agree on is 4. AFAIK, the BASIC in 3008 and friends was identical to the upgrade ROMs that went in original PETs. > Only the original ROMs start up with ***; all of the later ones used ###. That clears up my mystery above. Thank you. >> It might also be important to mention that the PET has a timer that >> operates in real time. And it has the same character set(s) as the VIC-20 >> and C64, but you can't switch between the upper/lower-case text character >> set and the upper-case/graphics set without issuing a POKE command. (Was >> it 49512,12 and 49512,14? My memory is rusty.) > > All those POKEs are ROM-version-dependent. Wrong, I'm afraid. POKE 59468, 12 (UC/graphics) and POKE 59486,14 (LC) are INDEPENDENT of ROM version. On 8032/8096, 8296 and Fat 40 you can use PRINT CHR$(14) and PRINT CHR$(142) (CTRL-N and CTRL-SHIFT-N except that PET never had a control key) to change between the modes. These codes also change to wide line spacing in LC mode, which the pokes don't. Hope this clears up some misconceptions. Philip.

27 years, 11 months

VM/SP

by Philip.Belben＠powertech.co.uk

> This started as a joke, but turned into something interesting. > Someone posted on alt.os.multics about setting a UNIX to pop up the VM/SP > logo from /etc/issue. I did one better and crocked up a way to make UNIX > actually act like VM/SP at the logon (Mutilated copy of telnetd and a new > login program). Fun! Now you need to write cmsh. > The question is, what was VM/SP? I know it was IBMs, and it ran on large > mainframes. Where can I find information about it? Virtual Machine System Product. I'll have a look thro' my IBM junk at home this evening, but I don't think I've got much on it. IBM draw boundaries in different places, but under VM operating system (CP, Control Program) usually ran CMS Conversational Monitor System - a bit like a shell, hence my pun above... The first scripting language for VM/CMS was CMS EXEC. I never used it but I understand it was awful. Later came EXEC2 - lots of & characters (I think - or were they % characters?) to identify names, or reserved words, or something. This was still the official scripting language when I encountered VM, but I, like everyone else, used REXX. This has exhausted my memory - I'm off home. Philip.

27 years, 11 months

PET 2001

by pete＠dunnington.u-net.com

On Jul 8, 19:01, Philip.Belben(a)powertech.co.uk wrote: > I've never heard of 2001NT. I have, but I don't think I've seen one. Unless it's actually identical to another model :-) > AFAIK, N = Non business keyboard. The top row of keys was !"#$%^&'() > like the tiny keyboard machines - numbers were only on the number pad. > > B = Business keyboard. Top row of keys was 1234567890, shift gave you > !"# etc. This meant you couldn't get some of the "graphics" characters > that came from shift-! etc. That refreshes my memory. There's a POKE to get the graophics but the default is as described. > Nor do I. All 2001 PETs had 9 inch screens. That's what I thought, but I didn't want to be to dogmatic (just for a change :-)) > > cassette-beside-the-keyboard. I've got one here. And the /B and /N series > > were called 3000's not 2001 everywhere except the USA. The 12" versions > > Are you sure? I thought the 2001-8N and 2001-8B got renamed 3008 a bit > later. Not absolutely sure, but around that time the local authority was buying a lot of PETs and I never saw a 3000 less than 16K, and never saw a business-keyboard 2001. > > didn't appear in the UK until later. According to my (USA) manual, the > > 2001/B (aka 3000 here) was a 9" screen too. IIRC, the 4000 was the first > > with a 12" screen, at least in the UK (USA might easily be different, of > > course), and that's borne out by my manuals. The 12" screen version was > > eventually called the 8000 series here, and had different firmware (and > > up to 96K RAM I think, bank-switched). > > Um. The first with the 12 inch screen was the 8032. Different firmware > and re-done video circuitry. Later some of that was put into 4032, > making the "fat 40" Bank switched RAM made an 8096... Hmm, that does sound more likely. Come to think of it, the 8000 were the fiorst I saw with a 12" screen as well. > > One of the differences between the business and home versions (apart from > > graphics symbols on the keytops) was whether the machine powered up in > > upper- or lower-case. > > Was it? That's weird! Yes :-) > Even weirder, though, was the lower case implementation. [ snip ] > Confused? It is, isn't it! I remember it caused som amusement with non_PET printers. > IEEE-488 to RS232 converters were very popular here, since PET had no serial > port. Alternatively, software could be written to drive a pin on the user port > serially. I know. I've done it. I've done that too. And there were a few serial converters, as Philip says. -- Pete Peter Turnbull Dept. of Computer Science University of York

27 years, 11 months

Amiga 2000

by maxeskin＠hotmail.com

Well, thank you, but here is a question that wasn't answered by the pinout: how do I double the frequency to 30hz, which is the lowest my monitor can do, according to the manual? >It would take less bandwidth to actually answer the question, so here you >are. > >1 XCLK* (External video clock) >2 XCLKEN* (External video clock enable) >3 Red (Analogue red video output) >4 Green >5 Blue >6 DI (Digital (TTL) intensity output) >7 DB (TTL blue output) >8 DG (TTL green) >9 DR (TTL Red) >10 CSync* (Composite sync) >11 HSync* (Horizontal sync) >12 VSync* (Vertical sync) >13 GNDRTN (Digital ground) >14 ZD* >15 C1* (Clock output) >16-20 Ground >21 -12V @ 50mA >22 +12V @ 100mA >23 +5V @ 100mA > >-tony > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

27 years, 11 months

FW: Auctioning Timex/Sinclair ZX-80,81 1000 w/RTTY&CW

by franke＠sbs.de

>>> Ahh, there goes my bid! >> This lot includes some real nice parts and collectiv >> parts .... and the bid already reached 76 USD. >> Shoud we start a bidding war ? :(( > Please don't, that's my bid! :) So, lets see how far I could push the price for you. 150 ? 200 ? ... :( H. -- Ich denke, also bin ich, also gut HRK

27 years, 11 months

OS's In ROM's (was: Re: Mac Classic prob (was Macintoshes..

by tomowad＠earthlink.net

>Apart from the ST, which has already been mentioned : >BBC Micro, Acorn Archimedes, many older portables (Tandy 100, HP110, HP71 >and HP75 (almost), EPSON PX4 and PX8), there was a model of the Tandy >1000 with MS-DOS in ROM, one of the Torch machines had a CP/M a-like in >ROM, HP IPC, Tandy CoCo + disk controller (maybe this only counts as >Basic in ROM), and plenty more that I've forgotten about I belive Apple's Newtons have the OSes in ROM. They certainly do boot quickly and a chip swap is need to upgrade the OS. Tom Owad Sysop of Caesarville Online Client software at: <http://home.earthlink.net/~tomowad/>

27 years, 11 months

PDP-11 info needed.

by mbg＠world.std.com

>Eh? While the command set of the UDA50 is MSCP, I wasn't aware that MSCP >command packets were sent to RA drives. I don't see why it would be >impossible to make an SDI controller that used some other command set. Sorry, I was talking at a different abstract level.. just like the RQZX1 talks MSCP on the host side, and SCSI on the disk side, the UDA50 talks MSCP on the host side... I've never worried about what it actually talks on the disk side... >IMHO the RL11 is dumber than the RK11. For one thing the RK11 supports >spiral reads/writes. And to move heads you load the disk address register >with the cylinder you want to go to, not the number of cylinders you want >to move. With the RL11 you've got to remember where you are. Not just that, but the driver is responsible for trying offsets from the center track in case a read fails... Back when we first added support for the RL01/02 to RT-11, it was explained to us that with the RL11, some of the smarts are moved out to each disk unit. This way the controller doesn't have to have all the smarts... supposedly more cost-effective (?!) Anyway, if you lose track of where you are, you have to reset to track zero and re-seek. There are several offsets (positive and negative) that the driver is supposed to try when it fails to read (and maybe write) a block. As already mentioned, the driver has to take care of track to track changes... which means that the driver has to take a user request and process it as multiple single-track operations until complete... Where the RK driver was simple, the RL driver was a PITA... and the convolutions in the MSCP handler are even more impressive... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry(a)zk3.dec.com | | Unix Support Engineering Group | (home): mbg(a)world.std.com | | Digital Equipment Corporation | | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 11 months

ISC Intecolor 8051 Circa 1978

by Marty＠itgonline.com

I recently rescued an Intelligent Systems Corp. model 8051 Intecolor terminal/pc, s/n 5013 from the side of a road (there were several printers which first caught my eye, this unit has a wood grained plastic cover which first made me think it was an old window air conditioner as it was face down and covered with other junk). I saw this advertised in the February and December issues of Byte Magazine as a model 8001. The December 76 Byte ad states this is an intelligent terminal that can be upgraded to a personal computer by adding Basic and extra ram (this appears to have been upgraded). I had never seen one of these in person before and didn't realize how massive they are: 17" high by 19 1/2 " wide by 22" deep, weighing at least 50 pounds (although I haven't weighed it). The tube is a 19" color. There are 9 slots inside with a CPU/I/O/Keyboard board (Intel 8080A), memory, additional memory board, prom board (with Basic and others) plus a floppy controller. Ports (DB25) are J1 Modem, J2 Floppy Tape, J3 Keyboard, J4 24 Bit I/O (this port is blank actually),J5 Floppy Disk, J6 USART (port is blank). Unfortunately there was no keyboard or documentation and outside of the Byte ads I don't know anything about this. Does anyone know where I can get a keyboard and documentation for this? Also the power cable is non-standard, per a friend of mine it was used by typewriter manufacturers and is known as a AC Victor cable. Thanks, Marty

27 years, 11 months

Looking for VAX FAQs

by allisonp＠world.std.com

< Personally, if it came to building a board from scratch, I'd have to say I < compatible Dual IDE controller. Drives are cheaper. I can just see stickin < my BA123 - 20 g of space, for less than a grand. Gee, I wonder if the powe < (snicker). There are MSCP docs somewhere out their on the web - or you cou < people, I believe at least one of them has the MSCP handbook. I'd buy it i < Q-bus version, anyway) A IDE controller for Qbus is fairly straightforward if your willing to have a little local intelligence for cache and dma management. If your willing to write a non-MSCP VMS driver or unix driver for it. Adding MSCP may make it more difficult as there is far more taskwork. Doing it as scsi is not much worse... it's the scsi controllers and the associated software that are a pain. Allison

27 years, 11 months

Fw: museun? mag disk?

by pjoules＠coleg-powys.ac.uk

Please contact poster directly Phil Baumeister <baum-nospam(a)sonic.net> wrote in message <6nuqu8$qi8$2(a)ultra.sonic.net>... > please remove -nospam when replying > > i would like to find a home for a > 2314 magnetic disk file drive > that was once (1968) mounted > on IBM 360 main frames. > > items that are 20 years old are > junk and are trashed. but this > is 30 years old. where should > it end up? > > any suggestions? > > phil baumeister > >

27 years, 11 months

FW: Auctioning Timex/Sinclair ZX-80,81 1000 w/RTTY&CW

by franke＠sbs.de

> Ahh, there goes my bid! This lot includes some real nice parts and collectiv parts .... and the bid already reached 76 USD. Shoud we start a bidding war ? :(( Gruss H. -- Ich denke, also bin ich, also gut HRK

27 years, 11 months

TI99: Re: TIer since...

by allisonp＠world.std.com

< all over the US. I went to one and I drooled all over a VAX with a < couple of winchester cabinets, 9 track tape drives, and a big terminal They can be big. Myself I run a slew of baby vaxen (2000s, 3100s and Q-bus Microvaxen). < server. My boss told me I should bid $1.00 on it. I joked and said, "If < I did that I might get it!" heheheh They make you haul the stuff off if That's their revenge. Allison

27 years, 11 months

FW: Auctioning Timex/Sinclair ZX-80,81 1000 w/RTTY&CW

by jfoust＠threedee.com

Forwarded from the Greenkeys mailing list. Current bid is $56... - John Date: Tue, 07 Jul 1998 22:28:07 -0400 From: "Charles A. Days" <radiodaz(a)ici.net> Organization: Old Radio Days To: Major Domo <greenkeys(a)qth.net> Subject: [GreenKeys] Auctioning Timex/Sinclair ZX-80,81 1000 w/RTTY&CW interface Sender: owner-greenkeys(a)qth.net Hi, I am auctioning off my entire Timex/Sinclair ZX-80,81 & 1000 collection. I had used it for program development way back when. As well as Ham radio RTTY/CW. Go to: http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=20430855

27 years, 11 months

Apple and Commodore Computers

by franke＠sbs.de

>> Second, has anyone heard of a Commodore C64k?? I found a news post where >> a guy had two of these available, but I don't recognize the "k" suffix. > I think the person added it himself. > There are four flavors of the Commodore 64. > Commodore 64 - The original unit, roundy brownish-grey case dk. brown > keyboard, a good machine. And the brown and the beige case versions ad of course the golden. > Commodore 64c - The updated (low-profile lt.cream case, white keys) cost > reduced model unlike other reponses no voices were removed. The story is > Commodore did a 'bug fix' on the sound chip that affected games that utilized > a perceived flaw on the sound chip that made digitized sound playback easy, on > the 64c you can barely hear the digitized segments. This unit was also called C64-II. And remember the gray case version. > Commodore SX-64 - the Commodore 64 in a luggable all-in-one unit included 64, > 5" color display, built-in 1541 disk drive and audio speaker. Pretty cool, > used original C64 chips though Commodore altered the ROMs to better support > the built in drive at the sacrifice of cassette support (and compatibility > with some programs and hardware that required it.) Don't forget the DX. > Commodore-128 - One of the facets of the Commodore 128 is the C64 mode, the > chips reflect the older 64 and is 99.94% perfect in emulation except for one > memory location which can bump the computer into 2mgz mode thereby messing up > the display provided by the 1mghz 40 column display chip. :/ Some earlier > games inadvertanly activate this mode. And speaking of the 128 (Which I don't considere a C64) there are at least two versions of the 120D with detatched keyboard. > If I wanted to do only 64 stuff the original grey 64 is the one to get. :) Gruss H. P.S.: Nice PET - FAQ -- Ich denke, also bin ich, also gut HRK

27 years, 11 months

Amiga 2000

by franke＠sbs.de

>>What is the pinout of the 23-pin port? > Max, your message consisted of one line of question with > dozens of lines of previous message. Please consider editing > out the parts you don't need. True > Also, there are dozens of web pages with the pinouts of the various > Amigas. Did you try a web search before you replied? I entered > "23 pin port amiga" in Hotbot and got 1,970 hits, many valid. Ever tried this for PET (a classic in any sense) ? > Is the Amiga a valid topic for the mailing list? Surely the > first models fit the ten-year-rule, but the A2000 falls short > by at least a year or two. There are other resources > you can tap - the Amiga news groups out-post the classic groups > by at least an order of magnitude, and that's only counting > the English-speaking groups. Shure, there are resources for anything, including a lot of obsolete computer things beside this list, but if you want to take this 10 year gudeline the hard way, you'll have to cut out any discusion about CGA for exampe - they are still in production. And fr the Amiga 2000 - I have two in my collection and considere them vintage :) Gruss H. -- Ich denke, also bin ich, also gut HRK

27 years, 11 months

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