test-drb

test-drb@ccmp.vtda.org

101090 discussions

by wayne.smith＠charter.net

> Date: Mon, 16 Apr 2007 23:43:58 +0100 (BST) > From: ard at p850ug1.demon.co.uk (Tony Duell) > Subject: Re: Linux question > To: cctalk at classiccmp.org > Message-ID: <m1HdZvW-000J1GC at p850ug1> > Content-Type: text/plain > > > Ask a question about Linux, everyone falls over themselves > to help - > > and that's certainly nice. > > > > But ask a question about a classic system like the Kaypro 10 - like > > poor Ralph Dodd did on April 12th - and the response is > disinterested > > silence. > > I disagree with the last comment. I am not 'disinterested'. > > I didn't actualy provide the answer to the linux question > because others > had got there before me and I had nothing to add. But I > easily could have > given the answere. Darn it, I've got cat running on this machine > (obviosuly), I can do a 'man cat' to see if there's anything > useful, and > so on. > > No, going back to that Keypro 10. I don't have one. I don't > have a technical or service manual (or a schemaitc) for it. > Coming from a TRS-80 background I have little experience of > CP/M machines (I always felt LDOS was a superior OS), I don't > have a single CP/M luggable. I have no experience at all of > the 3rd party ROMs that I believe were mentioned in the > original question. I can't help the OP. It doesn't mean I'm > not interested -- I am. But the only contribution I could > make would be > 'Sorry, I don't know' and that would be a total waste of bandwidth. > And that's my point. This is a Classic Computer list, yet no one on the list is able to respond to this guy's Kaypro 10 question. Perhaps the question was obscure, but this is truly the playground of obscurity. I would venture that 10 years ago Dodd's post would have received at least a few responses, as there were a lot of CP/Mers then on the list. They seem to have mostly moved on, and the composition of the list has changed. That's not necessarily a good or bad thing - but it is change. At one point in time I would have ventured that 70-90% of the list had some sort of CP/M machine, but I bet that number is now well south of 50%. "Disinterested" probably comes off as a bit too negative. People aren't really distinterested per se, the current composition of the list just isn't focused on these types of machines. Perhaps it would have been better to say "bewildered silence". -W

19 years, 2 months

DEC Terminals available...

by lbickley＠bickleywest.com

If you're in the market for some DEC terminals - VT420 mostly - go to Weirdstuff (Sunnyvale, CA) this week! Doing my weekly Weirdstuff check - I found a lot (approx. 50) of DEC VT420's that are about be scrapped - likely by Friday of this week! Weirdstuff is willing to sell known working (you can test yourself) VT420's for $10 w/o keyboard or $20 w/keyboard. The retail store has been told of this deal - so you can go there - or if you're going to purchase quantity, contact "Jimmy" 408-743-5650 x320. They also have some DEC VT320, VT330, VT520, WYSE and other terminals available for additional $ (They are NOT scheduled to be scrapped). LOCAL PICKUP ONLY (absolutely NO SHIPPING). [I have no financial interest in this transaction] Cheers, Lyle -- Lyle Bickley Bickley Consulting West Inc. Mountain View, CA http://bickleywest.com "Black holes are where God is dividing by zero"

19 years, 2 months

DEC Terminals available...

by Billy.Pettit＠wdc.com

Lyle Bickley wrote: If you're in the market for some DEC terminals - VT420 mostly - go to Weirdstuff (Sunnyvale, CA) this week! Doing my weekly Weirdstuff check - I found a lot (approx. 50) of DEC VT420's that are about be scrapped - likely by Friday of this week! Weirdstuff is willing to sell known working (you can test yourself) VT420's for $10 w/o keyboard or $20 w/keyboard. The retail store has been told of this deal - so you can go there - or if you're going to purchase quantity, contact "Jimmy" 408-743-5650 x320. They also have some DEC VT320, VT330, VT520, WYSE and other terminals available for additional $ (They are NOT scheduled to be scrapped). LOCAL PICKUP ONLY (absolutely NO SHIPPING). ------------ I can't get up to the Bay area again until Memorial Day. If any of you local to the Bay area decide to buy some of these, would pick up one (with keyboard) for me? I can mail you a check, PayPal or your preference. Just can't pick it up until end of May. Billy

19 years, 2 months

Kaypro 10 format.com

by ajp166＠bellatlantic.net

> >Subject: Kaypro 10 format.com > From: info <info at harrells.net> > Date: Wed, 18 Apr 2007 15:52:00 -0400 > To: General Discussion: On-Topic Posts Only <cctech at classiccmp.org> > >With all the Kaypro 10 in the group I wondered if someone could send me >a copy of the format.com. I think thats the floppy formatter. >I have a k10 without the kayplus bios and a new hard drive that needs formatting. I have download the kaypro disks from dave's site and the system disk 2 is really multiplan. It may be an image of a bootable disk, IE: system tracks filled in. >I have a program called hdskfmt.com which I was told would work but >it is just a disk certify program. Thanks Does it certify or fail? Does it require a command line arguement to get to format? I thought the formatter for K10 hard disk was HDFMT as well. Allison

19 years, 2 months

HP 1611 Microprocessor Logic Analyzer

by Billy.Pettit＠wdc.com

Al Kossow wrote: I found the docs I have this morning. Basic service manual and Z80 personality module up on http://bitsavers.org/pdf/hp/te/1611 I have the 8080 and 8085 module docs that I'll get to eventually. --------------------- Thanks Al. I appreciate it. I'll be spending the weekend going through these 3 manuals. Then see if I can modify the 1611 to do other, older machines. Billy

19 years, 2 months

IDE Qbus controller (was TU-58s)

by ajp166＠bellatlantic.net

> >Subject: Re: IDE Qbus controller (was TU-58s) > From: Roger Ivie <rivie at ridgenet.net> > Date: Wed, 18 Apr 2007 12:40:41 -0700 (PDT) > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >On Wed, 18 Apr 2007, Allison wrote: >> Devices that arent MSCP like DD(tu58), DK(RX02), DY(RX02), >> DL(RL02) might make for examples. I'm fortunate to have >> the uncut sources on RL02. Unfortunately I'm not an >> experienced PDP-11 programmer. The upside is I have the >> RT-11 docset. > >You might take a look at the sources for the Pro350/380 hard >disk driver. IIRC (I did some mucking about with that driver, >although it has been years), the controller was quite similar to >the WD1010 stuff that eventually became IDE. >-- that is helpful info. I suspected there were other drivers that might be closer to the hardware then the MSCP route. Allison

19 years, 2 months

Quick survey on equipment

by zmerch-cctalk＠30below.com

Rumor has it that Ethan Dicks may have mentioned these words: >On 4/18/07, Ralph E. Dodd <redodd at comcast.net> wrote: >>Apple II with CP/M card > >My boss at a job in 1984 had one of those for running business >software. I never got to use it, but it seemed to do the trick for >him. > >I should google it to read up on the details, though I'll probably >never run across one in the wild. Dunno... how wild do you wanna get? I think I have a card stuffed in the attic - I don't have a ][, tho... Laterz, Roger "Merch" Merchberger -- Roger "Merch" Merchberger | A new truth in advertising slogan SysAdmin, Iceberg Computers | for MicroSoft: "We're not the oxy... zmerch at 30below.com | ...in oxymoron!"

19 years, 2 months

hardware parity generation

by julesrichardsonuk＠yahoo.co.uk

hacking time... Is parity generation a simple case of chaining exclusive-or gates for the required number of data bits? e.g. for 8 data lines: d0 --+ XOR--+ d1 --+ | XOR--+ d2 --+ | | XOR--+ | d3 --+ | XOR--- parity d4 --+ | XOR--+ | d5 --+ | | XOR--+ d6 --+ | XOR--+ d7 --+ (possibly inverted at the end, depending on requirement for odd/even parity) ... I think that works, but thought I'd ask for list wisdom first :) I don't have a parity generator IC (LS280?) handy, but if the above works then a couple of LS86 chips would do the job*. *possibly a little slower than a "proper" LS280, but that's not critical for what I had in mind. cheers Jules

19 years, 2 months

cctech Digest, Vol 44, Issue 47

by ajp166＠bellatlantic.net

> >Subject: RE: cctech Digest, Vol 44, Issue 47 > From: "Barry Watzman" <Watzman at neo.rr.com> > Date: Wed, 18 Apr 2007 13:22:44 -0400 > To: <cctech at classiccmp.org> > > >> On Tue, 17 Apr 2007, woodelf wrote: >> >> On that subject, what operating systems did the H-11 support? I have >> one sitting in my collection, complete with paper-tape reader and 8" >> disk drives. Never had the space to set it up until recently. >> >>Steve >> >The only Heath disk operating system offered by Heath for the H-11 was >HT-11, which was a very slightly modified (dumbed down) version of DEC's >RT-11. The only disk system offered by Heath was the H-27, dual 8" [Memorex >SSSD] drives. Many customers wanted to buy genuine DEC RT-11, which would >run on the H-11/H-27, but it was about $2,500 (and the differences from >HT-11 to RT-11 were very, very few). HT-11 was "cheap", but it would only >run on the H-27, it would not work on a non-Heathkit DEC floppy disk system. >The H-27 had two modes, "Heath" and "DEC", to prevent HT-11 from being used >on non-Heath H-11's. A friend had one. HT11 was basically RT-11 V2 with V3.* was current. I have a card cage, lsi-11, memory and serial and parallel IO card set for an H11. Those were retirees when he went to a 11/23. HT11 would run on a RX02 though they didn't supply the DX driver (one from V2.5 worked fine!). Also the H27 disk system worked fine in any Qbus system when in rx01 emulation mode (using DX driver). >I don't recall if there was paper tape software for the H-11 or not (I think >that there was), but even if there was, no one used it very much. The Heath The paper tape software supplied was IOX or IO executive. It was a package of routines you could build a closed system around or maybe your own OS. >paper tape reader, the H-10, was a mechanically unreliable nightmare (mostly >the punch, the reader worked ok), but they are worth a lot of money today, >I've seen them go on E-Bay for over $600. The punch had a lot of problems and the reader had a cog that would go out of round. >HT-11/RT-11 was no prize; it was a low level contiguous file operating >system, less sophisticated even than CP/M, although it may have had some >better utilities (and, for those to whom it mattered, it was of course "more >DEC-like"). Rt-11 is still the same filesystem. However it's a useful realtime OS and has a very small footprint. >The H-27 was just two standard 8" drives in a case with a Z-80 based >intelligent controller (WD1771 disk controller chip) that talked to the H-11 >using what we would now call a "host adapter" over a proprietary >bi-directional parallel port. The interface and command set wasn't any of >the standards for this type of configuration (e.g. it wasn't SASI or SCSI), >but it used that type of architecture. For a number of years I used an H-27 >on an S-100 system with a Tarbell controller by simply disconnecting the >internal intelligent controller and running a 50-pin cable direct to the two >Memorex drives. They were Shugart SA-801 compatible, so it was an easy >configuration to use, the H-27 then being just two drives, a power supply >and a cabinet. The drives were notorious for broken media hub clamps. Also the H11 power supply tended to go poof easily. However for the price it was a huge leap up in performance over the general market S100 or SS50 machines of the day. Allison

19 years, 2 months

IDE Qbus controller (was TU-58s)

by ajp166＠bellatlantic.net

> >Subject: IDE Qbus controller (was TU-58s) > From: "Jerome H. Fine" <jhfinedp3k at compsys.to> > Date: Tue, 17 Apr 2007 22:19:15 -0400 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > > >Allison wrote: > >>I have a few contollers (dual width) that are Both MFM and >>SCSI that sound like those. >> >>I keep putting it on my list of projects to do a simple IDE >>for QBUS. the design goals would be dual width, boot rom on >>board and uses a 2.5" drive on the card. So far I've only >>seen one Qbus IDE and it was lacking for software. Software >>driver for that hardware is for RT11 alone is a bit of a >>project as I'd need both the FB and SJ versions of the >>driver. >> >Jerome Fine replies: > >Device drivers for RT-11 are identical for FB and SJ >(or SB) monitors. The XM (RT11XZ monitors use the same >device drivers as XM) device drives are a bit different. I know that. That was just a typo. >If you feel that MSCP emulation (probably OK now that >the patent has expired) is too much trouble, then >perhaps the HD(X).SYS protocol from E11 would be >easier. I suspect that the protocol is so basic, >the concept might be included within other interface >such as for RK05 or even a floppy. Devices that arent MSCP like DD(tu58), DK(RX02), DY(RX02), DL(RL02) might make for examples. I'm fortunate to have the uncut sources on RL02. Unfortunately I'm not an experienced PDP-11 programmer. The upside is I have the RT-11 docset. >Whatever interface protocol you use, if you want to >extend the number of RT-11 devices that are allowed, >I would be very interested in looking at allowing >up to 256 devices using MSCP under RT-11. Naming >might be the problem: D00: => D77: where the >numbers seem to be octal allows up to 64 devices. >Using D00: => DFF: where the second and third character >seem to be hex would allow 256 devices. Alternatively, >using D00: => D7V: where the third character has >32 values including 0 => 9 and A => V. Thats beyond me. >The other possibility is to use multiple sets of >hardware registers that look like multiple controllers >under RT-11. And since even 256 RT-11 devices of >32 MBytes each covers only 8 GBytes, multiple controllers >may be required in addition to allowing 65536 RT-11 >partitions per drive by changing the table that >holds the RT-11 partition number to a 16 bit word >from an 8 bit byte. The later should not really >be a problem since the unit number is already limited >to a single byte even though a 16 bit word is available. >Swapping the unit number word with the partition >number byte should be reasonable and quite simple. > >Producing RT-11 bug fixes and enhancements is on >my list of priorities. Y3K is at the top of the >list. Does anyone else want to participate? There >are only 92 more years left. If one additional >word is allowed for the date, that would mean that >23 bits are available for the year. Likely that >should be enough for a while since the CE use of >97 leap days out of 400 will certainly need to >change before 8 million years. I should live so long.;) Allison

19 years, 2 months

Quick survey on equipment

by redodd＠comcast.net

> Some have questioned the number of people on the list who have CP/M systems. I have 2 Heath H89's, 1 with the hard sector floppy controller & the other has both hard & soft controllers - neither in running condition at the moment Kaypro II Kaypro 10 - the machine that caused this thread because of turborom problems :) HELP!! Dynabyte DB8/1 S100 system with 64K Dynabyte DB8/4-2 (2 Remex 8in. floppies) both of these haven't been touched in many years TRS-80 Model 4 & 4P - both run LDOS & Montezuma Micro CP/M Apple II with CP/M card Atari 800 with ATR8000 thats runs Atari Doses & CP/M many other non-CP/M machines Ralph

19 years, 2 months

DEC Terminals - Location of Weirdstuff...

by lbickley＠bickleywest.com

We SV/SF Bay Area locals know this - but many others of you may not: Weirdstuff Warehouse 384 West Caribbean Drive Sunnyvale, California, 94089 Regards, Lyle -- Lyle Bickley Bickley Consulting West Inc. Mountain View, CA http://bickleywest.com "Black holes are where God is dividing by zero"

19 years, 2 months

Update on floppy disk request in Austin

by sellam＠vintagetech.com

Lucy said she called the Goodwill Computer Works and was told they have stacks of disks (not surprising) so I guess the need has been fulfilled. Sorry if I got someone all worked up over nothing. At any rate, Lucy says when the film is complete she'll send me the link to the video, which will apparently be posted to Pervasive Software's website. -- 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 ]

19 years, 2 months

HP 1611 Microprocessor Logic Analyzer

by aek＠bitsavers.org

> Does anyone on the list have documentation for the 1611s? I found the docs I have this morning. Basic service manual and Z80 personality module up on http://bitsavers.org/pdf/hp/te/1611 I have the 8080 and 8085 module docs that I'll get to eventually.

19 years, 2 months

Quick survey on equipment

by Watzman＠neo.rr.com

I have an Imsai, a Z-100 and a Processor Technology SOL-20. Some special notes: Although it's not what I'm running, indeed they have been in a box and I have not run them since 1983, I have the three Seattle Computer Products cards required to implement 86-DOS (the OS that Microsoft bought from Seattle Computer Products that became MS-DOS) on the IMSAI or any other S-100 system. And I have 86-DOS itself, original floppy diskettes direct >from Seattle Computer Products. I bought it myself back in 1980 direct from SCP, it's original, and I think I have every version from 0.33 to 2.0 (e.g. MS-DOS 2.0). Also, I have a working Helios disk system for the SOL-20, and I have copies of PTDOS that actually run. This might just be the last working Helios PTDOS system in existence, certainly there are not many of them still running.

19 years, 2 months

Heathkit H-11 & H-27

by Watzman＠neo.rr.com

Re:" From: "Ethan Dicks" <ethan.dicks at gmail.com> I'm still trying to get that H27 drive working. I should check bitsavers or schematics for the Qbus floppy card. The card itself works to a point - if I install it in a minimal system (CPU, serial, RAM, boot/terminator), I can get the system to read in the boot sector from the floppy, but it hangs about the time RT-11 is running far enough to turn the interrupts on. I suppose I should also track down an H-11 configuration guide or module list or installation docs or whatever it came with to ensure I have a happy set of cards set to happy values. I've checked each chip on the H-27 interface, so I'm reasonably certain it's not a simple hardware problem; I'm not so convinced it isn't a jumper or other configuration problem. Mine came to me with only the enclosure and backplane being native Heathkit. The rest was 100% DEC (the floppy was never attached while I worked at that company). If anyone has any H-11 "getting started" docs, I'd appreciate a copy. Thanks, -ethan" As I said previously: "The H-27 was just two standard 8" drives in a case with a Z-80 based intelligent controller (WD1771 disk controller chip) that talked to the H-11 using what we would now call a "host adapter" over a proprietary bi-directional parallel port. The interface and command set wasn't any of the standards for this type of configuration (e.g. it wasn't SASI or SCSI), but it used that type of architecture. For a number of years I used an H-27 on an S-100 system with a Tarbell controller by simply disconnecting the internal intelligent controller and running a 50-pin cable direct to the two Memorex drives. They were Shugart SA-801 compatible, so it was an easy configuration to use, the H-27 then being just two drives, a power supply and a cabinet." Your interface card (in the H-11/LSI-11) is apparently good. The next thing to check is the two 8" Memorex drives. Since these are standard 50-pin cable Shugart compatible drives, this is fairly easy to test if you have another system .... just disconnect the daisy chain from the internal controller (the Z-80/WD1771 board in the H-27 cabinet, below the drives (below the sheet metal that the drives sit on), connect the drives to another known-good 8" controller and see if they work. If they do work, then the issue must be in the internal H-27 controller. That controller is a Z-80 with a WD1771 FDC and, of course, it has it's own firmware in ROM and it's own RAM (probably a few 2114's). Any of that could be bad. Also, that board has two modes, selected with a front panel switch, Heath and DEC (not what they were called, but the switch should be clear). RT-11 may or may not work in the Heath mode, I'm not sure (but HT-11 most definitely will not work in the DEC mode, which was really the point of this exercise). Beyond that, I don't know of a good way to test that board without something like a Z-80 ICE unit. That type of embedded system can be very hard to troubleshoot. There may have been some built-in diagnostics, but I have no information on that at this point.

19 years, 2 months

PDP-11/34 filter and cable routing questions

by dundas＠caltech.edu

Continuing work on restoring my /34, I'm trying to replace the badly decayed filter it arrived with. A description with photos can be seen at <http://dundas-mac.caltech.edu/~dundas/retro/11-systems/34a/filter/index.html> So the questions: * Where is the filter placed? In front of or behind the velcro? * What are the correct dimensions? * Any specifications available for the filter material, thickness, etc? * Any hints on the correct cable routing between the modules in the BA11 and the KY11-LB? I've been unable to locate this information in the on-line manuals and print sets, but if it's there and I just missed it, I'd appreciate the reference. Thanks for any help. John

19 years, 2 months

Heathkit H8's, H9's and H-11's

by Watzman＠neo.rr.com

Robert Armstrong wrote: > Dunno about the H-9, but the H-19 was a nice terminal. I have one > hooked up to an H-11; works great. Does anybody know how long they sold H-11's? I remember drooling over it when I saw the ad I think in BYTE, but I remember the H-8 had the write up but very little other than 8080/8086 ever seemed to have more than a passing glance with that magazine. > Bob Armstrong The H-11 was offered from 1977 (when Heath entered the computer business) until about 1981 or 1982 ... I don't remember the exact date. While the hardware was nice if you liked DEC architecture (it was just a standard LSI-11 made by DEC), it was a terrible system for a computer hobbyist at the time. There was very little software, and both the hardware and the software was expensive. Although I didn't introduce the H-11 and by the time I took over was only trying to sell off our inventory, I felt guilty for offering the system, because I knew that almost everyone who bought it was making a several thousand (1970's) dollar mistake.

19 years, 2 months

cctech Digest, Vol 44, Issue 47

by Watzman＠neo.rr.com

> On Tue, 17 Apr 2007, woodelf wrote: > > On that subject, what operating systems did the H-11 support? I have > one sitting in my collection, complete with paper-tape reader and 8" > disk drives. Never had the space to set it up until recently. > >Steve > The only Heath disk operating system offered by Heath for the H-11 was HT-11, which was a very slightly modified (dumbed down) version of DEC's RT-11. The only disk system offered by Heath was the H-27, dual 8" [Memorex SSSD] drives. Many customers wanted to buy genuine DEC RT-11, which would run on the H-11/H-27, but it was about $2,500 (and the differences from HT-11 to RT-11 were very, very few). HT-11 was "cheap", but it would only run on the H-27, it would not work on a non-Heathkit DEC floppy disk system. The H-27 had two modes, "Heath" and "DEC", to prevent HT-11 from being used on non-Heath H-11's. I don't recall if there was paper tape software for the H-11 or not (I think that there was), but even if there was, no one used it very much. The Heath paper tape reader, the H-10, was a mechanically unreliable nightmare (mostly the punch, the reader worked ok), but they are worth a lot of money today, I've seen them go on E-Bay for over $600. HT-11/RT-11 was no prize; it was a low level contiguous file operating system, less sophisticated even than CP/M, although it may have had some better utilities (and, for those to whom it mattered, it was of course "more DEC-like"). The H-27 was just two standard 8" drives in a case with a Z-80 based intelligent controller (WD1771 disk controller chip) that talked to the H-11 using what we would now call a "host adapter" over a proprietary bi-directional parallel port. The interface and command set wasn't any of the standards for this type of configuration (e.g. it wasn't SASI or SCSI), but it used that type of architecture. For a number of years I used an H-27 on an S-100 system with a Tarbell controller by simply disconnecting the internal intelligent controller and running a 50-pin cable direct to the two Memorex drives. They were Shugart SA-801 compatible, so it was an easy configuration to use, the H-27 then being just two drives, a power supply and a cabinet.

19 years, 2 months

Looking for Northstar Horizon double-density floppy controller

by stekster＠gmail.com

I know I have an extra - finding it is another question. Contact me off list and I will start a search. I can also lend you some boot disks and have extra hard-sectored disks, and can send you pdf docs if you need them. Also check out Dave Dunfield's site http://www.classiccmp.org/dunfield/index.html if you haven't already for N* imagedisks. Bob Stek Saver of Lost Sols

19 years, 2 months

DEC/VMS manuals ("gray wall") available, any interest?

by gunther＠aurora.regenstrief.org

Hi folks, long time no chat with you. Just quickly, we're moving and throwing out stuff you can't think fast enough. Urgently they will toss DEC/VMS manuals from our "gray walls". They may be selective about what to keep. Is there any interest at all in preserving those? Please reply personally to me and cc the address shown below (preserve this subject line) if you are interested. This is going to happen in a matter of days, so time is of the essence. regards, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow at regenstrief.org Associate Professor Indiana University School of Informatics Regenstrief Institute, Inc. Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

19 years, 2 months

Looking for Northstar Horizon double-density floppy controller

by derschjo＠msu.edu

The subject says it all -- acquired a complete Northstar Horizon sans floppy controller a long time ago. I'd love to get this machine running, it's been sitting around dormant for so long, and it's basically useless without a floppy controller. If you have one you're willing to sell/trade for, let me know. Also looking for software if anyone can provide copies -- I have the HD-5 controller/drive so a copy of HDOS would be fun to play around with. CP/M would be nifty as well... As always, thanks in advance... Josh

19 years, 2 months

Heathkit H-19

by Watzman＠neo.rr.com

> RE: Dunno about the H-9, but the H-19 was a nice terminal. I have one > hooked up to an H-11; works great. > > Bob Armstrong > The H-19 was a great terminal. It was a truly great product. Great functionality, solid and reliable, and economical. And Heathkit and Zenith sold a ton of them, tens of thousands (might have even gotten up over 100,000). The H-89 (and all of its' variants) was just an H-19 with a single board Z-80 computer stuffed into the same cabinet. There were actually two major variants of the H-19, the original one and the later one that was re-engineered to meet FCC Class "B" RFI reduction approval. They are functionally the same, and the overall circuitry and firmware are more or less the same, but there are some changes internally (fairly major, actually). You can tell the later one because there is a circuit card on the CRT socket; on the early one, the CRT socket was just a CRT socket with wires running to the deflection board assembly.

19 years, 2 months

Heathkit H8's

by Watzman＠neo.rr.com

In article <002f01c78113$afc16f80$6500a8c0 at barry>, "Barry Watzman" <Watzman at neo.rr.com> writes: > [...] the "CP/M Card" (a > tiny small card, only about 3 inches wide, that allows the computer to > run CP/M ... I think that the original name was "extended > configuration card" or something like that). Do you mean this? Ebay item 200100612888 Yes, I believe that is of those (can't tell with absolute certainty, but I'm pretty sure). It's necessary to run CP/M. Normally the H-8's memory map has ROM in low memory (8K, I think). This card allows switching between this "standard" (for the H-8) configuration and a 64K all-RAM configuration.

19 years, 2 months

Quick survey on equipment

by ajp166＠bellatlantic.net

> >Subject: Re: Quick survey on equipment > From: "Zane H. Healy" <healyzh at aracnet.com> > Date: Tue, 17 Apr 2007 21:18:04 -0800 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >At 11:57 AM +1000 4/18/07, Doug Jackson wrote: >>Some have questioned the number of people on the list who have CP/M systems. I have a few peices mostly cp/m based but others are there. Allison Collection of operational hardware: PDP-8 based machines: ==================== PDP-8f 2 Decmate-IIIs OS/278 Intersil sampler (6100 chipset) 6120 based board, homebrew PDP-11 based machines: ===================== 1 LSI-11/03 rx02 2 PDP11/23 BA11S boxes, various hardware configs 1 pdp11/73 RACK SYSTEM (RX02, RD52, RX33, RL02). BA11va with 11/23 +tu58 PDT11/130 11/03 with tu58 dectapeII Homebrew design using T-11 (the 40pin PDP11) Rt-11, XXDP-11 and unix V6 VAX based machines: =================== Microvax-II (ba23 based) Microvax-II/GPX (Ba123 based, SCSI disks) 3 Microvax2000 all with RD53 or 54 drives, one with ultrix 2 Microvax3100/m76/gpx 3 Microvax3100/server (not M10e) VMSv5.4-4,V5.54, V7.2, Ultrix 4.2 CPM speaking machines: ====================== S100 subgroup ------------- Altair8800(pre-A) Built jan 1975 SN200! Altair 8800B-T complete, factory 1978 2 Northstar horizon, CP/M, NS*dos, hard disk (one I built in '77) CCS-2200 CP/M2.2 Compupro full boat with 8085/8088 card and MPX-1 (CCPM) Netronics 8085 w/VDM1 SBC/bounded systems: -------------------- AmproLB+ CMOS modded and running with 45mb 3.5" SCSI SB180 with SCSI adaptor, adptec scsi bridge and 20mb CPM2.2 3 Visual technolgies 1050, CPM-3 two with outboard 10mb SCSI disk Kaypro 4/84 w/handyman and Advent turborom+personality card Kaypro II complete 1 Vt180 complete 2 Vt180 CP/M board built up as standalone one modded for 6mhz 1 Vt185 Thats a Vt125 + Vt180. Osborne 1 Epson PX-8 with 120k ram wedge and 300bd modem wedge Other buses (not s100): ----------------------- NS* Advantage (hard disk) 2 Hurikon Z80 Multibus system CP/M2.2 MISC Single board computers and systems: ======================================= Motorola 6800D1 SBC with TBX National SC/MP board National Nibble basic [sc/mpII] SBC NEC TK80A 8080a SBC with protocard KIM-1 BCC180 Z180 controller 5 8085 SBC 4krom, 2kram, 3 8251 serial Cosmac ELF orgional (built back in '78) COSMAC ELF (TMSI TM100) expanded elf EELF (Spare Time Gizmos Embedded elf) DEC ADVICE, VAX chipset on an SBC for in circuit emulation. IMSAI IMP48 (8035 based SBC) Homebrew 8039 based SBC (switches and leds pannel!) Prompt-48 804x development tool/system NEC EVAkit-48 8048/9 development system/board 2 TI99A (with disks and SW) Technico superstarter system with assembler roms (TI9900) Tandy M100 portable Commodore 128, I keep forgetting that one.. H19 terminal Vt100/125 terminal Vt1200 Xterminal 3 Vt320 terminal White, amber and green! Vt340 Color Terminal VK170 Vt52 on a dual width card PC stuff of interest, generally I dont bother but these are interesting. Intel Inboard386(upgrades an XT to 386/16 with 1.2mb ram) Trackstar 128 (dual 6502 for ISA PC improvement) AST sixpack pro Tandy 1000hx (V20)

19 years, 2 months

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