test-drb December 2004

test-drb@ccmp.vtda.org

243 participants
530 discussions

by dwight.elvey＠amd.com

>From: "Tom Peters" <tpeters(a)mixcom.com> > >There was an attempt to "simplify" connection of multiple floppy drives >(meaning TWO) at one time by adding a "twist" to the cable-- some >conductors in the ribbon are cut out and reversed, which is a sort of >"cable select" for floppy drives. > >I seem to recall in this case that one would jumper both drives as drive A >in such a case, or as DS0. > >Stupid idea. Use a straight thru floppy cable and jumper one for DS0 and >one for DS1. We get it. > >If you intermingle the two drive select ideas you may have problems where >both or niether drives light up and niether can read. ---snip--- Hi As I recall, the two drives with the twist were actually DS0 and DS2 as seen by the controller. If using a straight cable, one had to skip DS1. Dwight

20 years, 7 months

Subject: Re: Got a HP 2648. Now what? Now women on list

by dwight.elvey＠amd.com

>From: Ladyelec(a)aol.com > >In a message dated 12/9/04 8:21:47 PM Central Standard Time, >cctalk-request(a)classiccmp.org writes: > > >> ubject: Re: Got a HP 2648. Now what? >> To: "General Discussion: On-Topic and Off-Topic Posts" >> <cctalk(a)classiccmp.org> >> Message-ID: <Pine.LNX.4.61.0412091313390.12343(a)fiche.wps.com> >> Content-Type: TEXT/PLAIN; charset=US-ASCII >> >> > I'll keep going: >> >> So. Are there any women (left) on this list? Hmm... I wonder why. >> > >Ya'll have at least one. >ME! >Isa > Hi Isa What type of machines are your favorites? Most of the women we've had in the past were into the heavy metal machines. You know, "If you could pick it up, it really wasn't a computer." Dwight

20 years, 7 months

5-1/4' drive on modern PC

by melamy＠earthlink.net

there are commercial machines that use a liquid photopolymer and a laser. You can scan a 3d object or feed in a autocad drawing. The object is then "built" from the bottom up 4 thousands of an inch at a time. You can create up to a final object size of a cubic foot with one machine I have seen. Its really cool to watch it make a part. The photopolymer is around $5 an ounce though (I seem to recall). > > I've daydreamed about a rapid prototyping machine that used > > relatively inexpensive hot glue sticks to create plastic 3D models. > > > > - John > > > > > >There are such devices though I think they use ABS plastic. Newer ones (3D >printers) seem to be using dust of some kind (starch?) with water or something >sprayed on the dust with an ink-jet head. > > >Peter Wallace

20 years, 7 months

Subject: Re: Got a HP 2648. Now what? Now women on list

by Ladyelec＠aol.com

In a message dated 12/9/04 8:21:47 PM Central Standard Time, cctalk-request(a)classiccmp.org writes: > ubject: Re: Got a HP 2648. Now what? > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk(a)classiccmp.org> > Message-ID: <Pine.LNX.4.61.0412091313390.12343(a)fiche.wps.com> > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > I'll keep going: > > So. Are there any women (left) on this list? Hmm... I wonder why. > Ya'll have at least one. ME! Isa

20 years, 7 months

Got a HP 2648. Now what?

by allain＠panix.com

> Was that Alison? I remember the name from the > list way back and wondered what had happened ... That makes two. Megan and Alison. I think MBG tends to check for interesting topics to comment on every few weeks (Thank-You). In general, She is ex-DEC and this list is less DEC oriented than it used to be. I'm tempted to go over to a netnews list. And we do have a few lurkers running Internet shops and things. There are just some things that don't help you meet women. My college had a 9:1 ratio. The MIT swap meet looks like about 20:1. ** On the other hand, this is a great place for women to meet men. ** John A.

20 years, 7 months

Irix-Install on SGI Indigo: RAM failure, ASQ=0x80

by fabtagon＠gmx.de

Hi everybody, I have an old SGI Indigo (IP12) which refuses my attempts to populate the harddisk with Irix 5.3. The harddisk doesn't boot, so I assume it to be empty. I get sashIP12 and fx.IP12 to load from cd, but using fx with that hd fails: SGI Version 5.3 IP12 Oct 31, 1994 fx: "device-name"= (dksc) fx: ctrl#= (0) fx: drive#= (1) ... opening dksc(0,1,) dks0d1s10: Drive not ready: RAM failure, ASQ=0x80. fx: warning: Failed to open dksc(0,1,10) SGI Version 5.3 IP12 Oct 31, 1994 (and the same again, if I want) Is it trying to open a non-existent partition dks0d1s10? Is it a software-fault? If it's a hardware fault: What's broken: hd or ram? The hd is in the bottom drive bay. After my enter keystroke in line 4 (drive#=1) the led flashes for a short time and at the same time (or maybe some millisecconds later) the error message appears. The error isn't very meaningful to me. Does anybody know about the problem or does have any hints? Thanks in advance, Fabian

20 years, 7 months

Looking for a place to get small(-ish) SCSI drives

by sethm＠loomcom.com

I fool around with a lot of systems that want small (by today's standards) 50-pin SCSI drives. A few years ago you couldn't walk around the streets of Palo Alto without tripping over big stacks of 500MB drives. These days, though, the stacks are made out of 9GB SCA drives -- far too large for my needs, and often far too large to be recognized by the computers I fool around with. But drives smaller than that are suddenly "rare" and "expensive", $30 or $40 for any SCSI drive under 9GB at a lot of resellers I've visited lately. Anyone know where those stacks went? Are small drives just impossible to come by for less than $30 now? -Seth -- "It looks just like a Telefunken U47! Seth Morabito You'll love it." - Frank Zappa sethm(a)loomcom.com

20 years, 7 months

IBM 5110

by merkabah＠sbcglobal.net

Would you be interested in selling your computer. It would be great for displaying to the kids in our school district. Thanks Daniel

20 years, 7 months

5-1/4' drive on modern PC

by dwight.elvey＠amd.com

>From: "Fred Cisin" <cisin(a)xenosoft.com> > >> >There was an attempt to "simplify" connection of multiple floppy drives >> >(meaning TWO) at one time by adding a "twist" to the cable-- some >> >conductors in the ribbon are cut out and reversed, which is a sort of >> >"cable select" for floppy drives. > >Several manufacturers had problems with their field dealers, such as >Computerland, being unable to properly handle things as complex as >jumpers. > >> >I seem to recall in this case that one would jumper both drives as drive A >> >in such a case, or as DS0. > >In the case of IBM, with a twist, jumper both as DS1 (SECOND drive). >In the case of TRS80, with pins removed in connector cables, jumper all >drive positions on the drive. > >> >Stupid idea. Use a straight thru floppy cable and jumper one for DS0 and >> >one for DS1. We get it. >> >If you intermingle the two drive select ideas you may have problems where >> >both or niether drives light up and niether can read. >> ---snip--- >> Hi >> As I recall, the two drives with the twist were actually >> DS0 and DS2 as seen by the controller. If using a straight >> cable, one had to skip DS1. > >On PC (5150), with straight cable, I used drives jumpered DS0 and DS1. >On PC (5150), with twisted cable, I used drives jumpered DS1 and DS1. > Hi I stand corrected. Thanks Fred. I knew it was something like that. Dwight

20 years, 7 months

my CP/M-80 pile'o'gunk

by tomj＠wps.com

I started inventorying the manuals a week ago, below is a bad copy of the spreadsheet, in two parts (software and hardware). A lot of it is common (Cromemco), maybe a few others are of interest: Phoenix Software PDOS. Manuals and software (pasm, plink, plib, etc) but also linkable objects to make the operating system (Z80, very high-perf (sic), CP/M-80 superset). JRT Pascal, 8", CP/M-80, xeroxed manual, includes letter mentioning the price drop from $250 to $25! Microsoft BASIC Compiler, 8" flop, CP/M-80, xeroxed manual. Software sucked then, probably amusing now. I have enough boot disks to simply bring the machine up (assuming the hardware doesn't catch fire, etc) and copy the files off. I once had some weird EPROM burner, brand forgotten, that wanted input as Intel hex, so I have a program called ZAPLOAD that converts to hex; I'll convert (assuming it does files > RAM) and send out the serial port as text using Telink, my old XMODEM program (or at worst, PIP) to my linux laptop. Twice for good measure, diff. It will have to wait until the rest of the machine arrives. I assume no one ever got an 8" flop going under DOS/Win/Linux? If any manuals are not floating around, I'll scan and make available. quan manual software location tomj TJ's mongrel computer (FIDO) hardware configuration 2/10/81 S1000 binder covered sheets; IO ports, boot/bugger manual Phoenix Software Associates Ltd PDOS User's Guide 1.0 1 yes ? S1000 binder CSSN-labelled copy in S1000 binder Phoenix Software Associates Ltd PDOS Programmer's Guide 1 yes ? S1000 binder 29227 Phoenix Software Associates Ltd PASM Users Manual 1 yes ? S1000 binder rev 1.0, 1 Feb 80 Phoenix Software Associates Ltd TEXT EDITOR User's Manual 1 yes ? S1000 binder 29202 Phoenix Software Associates Ltd LINK User's Manual 1 yes ? S1000 binder 29202 Phoenix Software Associates Ltd Plink II 1 yes ? S1000 binder 15 Jan 81, xerox, Lifeboat Associates Phoenix Software Associates Ltd BUG/uBUG 1 yes ? S1000 binder 29202 Computer Service Systems Network Inc (CSSN) Backup 1 yes ? S1000 binder written by tomj, undated, includes 25 Nov 80 addendum larger than the manual Microsoft, Inc MBASIC Compiler 1 yes probably, 8? flop Black binder Digital Research CP/M 2.2 Users Guide 1 yes yes CPM80 binder xerox Digital Research CP/M 2.2 Interface Guide 1 yes yes CPM80 binder xerox Digital Research CP/M 2.2 Alteration Guide 1 yes yes CPM80 binder xerox Digital Research CP/M Assembler (ASM) User's Guide 1 yes yes CPM80 binder original looseleaf Digital Research An Introduction of CP/M Features and Facilities 1 yes yes CPM80 binder original looseleaf Digital Research CP/M Interface Guide 1 yes ? CPM80 binder 1.4 I think Digital Research ED: A context editor for the CP/M disk system users manual 1 yes ? CPM80 binder 1.4 I think Digital Research CP/M Dynamic Debugger Tool (DDT) User's Guide 1 yes yes CPM80 binder 1.4 I think Digital Research CP/M System Alteration Guide 1 yes yes CPM80 binder 1.4 I think Alloy Computer Products TIP (Tape Interchange Package) 1 yes ? JRT ? JRT Pascal 1 yes yes blue binder 1982 quan manual software location HARDWARE Mountain Hardware Inc 100,000 day clock 1 yes Two manuals, different versions Teletek FDC-1 1 yes Scitronics Inc Real Time Clock 1 yes Cromemco TU-ART 2 yes Macrotech International Corp. SS256 1 ? 36ea HM4864P-2's Alloy Engineering S100/DEI 1 yes yes tape interface Central Data Corp. 64K RAM 1 yes Measurement Systems and Controls Inc DM6400 1 yes 64K RAM; rev C Cromemco 32K Bytesaver 1 ? no Cromemco ZPU 1 yes fido Modified as per LITTLE FIDO Cromemco 4FDC 1 yes yes fido Modified as per LITTLE FIDO Cromemco 16FDC 1 yes Cromemco RDOS ? yes EPROM on 4FDC card? Seattle Computer Products 16K PLUS ? yes static memory Industrial Micro Systems Inc Model 370 32K RAM ? yes Data Electronics Inc The Funnel ? yes yes fits Alloy card CMC Marketing Inc Model 2018R 1 yes fido notes for fromt panel in rear Microft Inc EPROM board 1 yes yes fido TC's homemade board Cromemco PRI 1 yes yes ? Solid State Music Microcomputer Products Inc VB3A 80-char video 1 yes yes fido TeleVideo Inc Operators Reference Manual 1 yes n/a Manual is for TVI-912B, 920B, 912C, 920C TeleVideo Inc 912, 920 Operating Instructions 1 yes n/a Shugart Associates SA800/801 Diskette Storage Drive yes n/a

20 years, 7 months

electro-Physics: 3.3 volts

by dwight.elvey＠amd.com

Hi Joe Actually, the East Germans fab ours. They are packaged in Singapore. We do the design and debug, though. That may change in the future, who knows. Still, by we, I included all of the AMD employees. Dwight >From: "Joe R." <rigdonj(a)cfl.rr.com> > >At 10:25 AM 12/10/04 -0800, you wrote: > >>Hi >> I don't think I'm giving away any trade secrets by mentioning >>that the primary reason for going to lower voltages is to >>reduce power consumption. The thinner oxides are to make them >>work at lower voltages( needs more gain ). Power is a squared >>factor of the voltage. Even a small reduction in voltage is >>a big payoff in power. If we could make the transistors work >>at 0.1 volts, we'd be doing it. >> Remember, we make these things. > > No you don't. The Chinese, Koreans, Malaysians and other Asians do. > > Joe > > >>Dwight >>from AMD. >> >> >> > >

20 years, 7 months

electro-Physics: 3.3 volts

by dwight.elvey＠amd.com

>From: "Steve Thatcher" <melamy(a)earthlink.net> > >there is a secondary aspect to voltage reduction and that is reduced power dissipation... which also translates to shoving more stuff into smaller spaces... > >-----Original Message----- >From: "Joe R." <rigdonj(a)cfl.rr.com> >Sent: Dec 9, 2004 9:51 PM >To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> >Subject: Re: electro-Physics: 3.3 volts > >At 09:30 PM 12/9/04 -0500, you wrote: >>Today I started mothballing the VAX 6000 and noticed that a large part >>of its power supply is on 3.3 volts, now common, but probably not in 1988. >> >>Seems like something was invented, probably in chip design that made >>3.3 so useful. I wonder what that was, when that landmark was reached. > > It wasn't a new invention. In was the fact that ICs were getting so >dense that they couldn't squeeze in any more circuits unless they could >reduce the space that the insualting layers took up. The layers were >already so thin that they'd break down at about 5 1/2 volt so they had to >reduce the voltage to 3.3 volts. Since then they've further reduced it to >1.8 volts and (I think) now to 1.1 volts. And there are plans to reduce it >even more. All so that they can reduce the bulk of the insulating layers >and add more gates. > > Joe > Hi I don't think I'm giving away any trade secrets by mentioning that the primary reason for going to lower voltages is to reduce power consumption. The thinner oxides are to make them work at lower voltages( needs more gain ). Power is a squared factor of the voltage. Even a small reduction in voltage is a big payoff in power. If we could make the transistors work at 0.1 volts, we'd be doing it. Remember, we make these things. Dwight >from AMD.

20 years, 7 months

my CP/M-80 pile'o'gunk

by aek＠spies.com

How about documenting the switch and jumper positions on your drive before you send it off. -- I can do that. Tom wanted to try some other things first. The manuals for the DT8 and the 1/2 height 242 are up at www.bitsavers.org/pdf/qume

20 years, 7 months

VAX 11/725

by msokolov＠ivan.Harhan.ORG

Antonio Carlini <a.carlini(a)ntlworld.com> wrote: > The DSV-11 was rated at 256kbps but > it can actually do either a tiny smidgen over (or a tiny > smidgen under) 1Mbps on a worst case HDLC sequence, > essentially forever. Hmm, interesting. I assume that's the limit for single channel operation, right? Do you know the true limit for operation with both channels? (64 kbps officially.) MS

20 years, 7 months

my CP/M-80 pile'o'gunk

by aek＠spies.com

I haven't tried to use that on the output of my rfloppy->dmk2raw programs, but if it doesn't work it should probably be fairly easy to adapt it. -- It works fine. Tom, I have a Qume DT8 you can borrow to read your discs. Send an adr offlist and I'll send it off.

20 years, 7 months

electro-Physics: 3.3 volts

by dwight.elvey＠amd.com

>From: "John Allain" <allain(a)panix.com> > >Today I started mothballing the VAX 6000 and noticed that a large part >of its power supply is on 3.3 volts, now common, but probably not in 1988. > >Seems like something was invented, probably in chip design that made >3.3 so useful. I wonder what that was, when that landmark was reached. > >(For that matter, I don't really know why 5V and > 12V were popular, on a "first priinciples" basis.) > >Maybe we've lost some of the people on the list who can answer these >questions, but I'm trying anyway. > >John A > Hi RTL was 3.6V. Dwight

20 years, 7 months

Card punch?

by brian＠quarterbyte.com

What's par for the course is that they have it classified as FSC code 5999 - Miscellanous electrical equipment. I have a standing search for 7040 (Punched Card Equipment), a category that they appear to use only for laser printers, monitors and photo-ID cameras. I suspect they just pull the numbers out of large bowl, lotto style. > http://cgi.govliquidation.com/auction/view?id=498212 It seems to be a keypunch/verifier, non-IBM. There also seem to be a couple of VT-100's in the lot, or close cousins, non-yellowed. Wonder if the keyboards are there. Someone with more storage space than I have should get this. And then tell me about it so I can enjoy it vicariously. Isn't it funny that keypunch/verifiers show up here and on ebay in the same week? Brian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Quarterbyte Systems, Inc. _| _| _| Tel: 1-510-559-7930 _| _| _| Fax: 1-510-525-6889 _| _| _| Email: brian(a)quarterbyte.com _| _| _| http://www.quarterbyte.com

20 years, 7 months

Yaze 2.01 under Mac OS X 10.3.6

by ron.hudson＠sbcglobal.net

I have just downloaded Yase-AG 2.01 from http://www.mathematik.uni-ulm.de/users/ag/yaze-ag/ The install instructions say: 4. If you want to run yaze-ag under Mac-OS-X then (gcc ?.?.?) You have to use the Makefile_solaris Refer to section "Solaris". Which switches are to set, that I don't know at this time. In a console session (iTerm or Terminal) I renamed the Makefile to Makefile_save, and Makefile_solaris to Makefile, Did a Make, and although there were many warnings, I got a working system. Run ./yase from the same directory and was transported to CP/M land. Apparently you don't have to worry much about the switches, but they might reduce the number of warnings.

20 years, 7 months

Got a HP 2648. Now what?

by msokolov＠ivan.Harhan.ORG

Jules Richardson <julesrichardsonuk(a)yahoo.co.uk> wrote: > Was that Alison? I remember the name from the list way back and wondered > what had happened to her, she seemed pretty clued-up on things. Do you mean Allison Parent? I never saw her on this list, but maybe it was before I joined. What about Megan Gentry and Emanuel Stiebler? MS

20 years, 7 months

Making CP/M disk images

by GFisher＠tristonecapital.com

I just wanted to give an update on how I was making out with the disk images for the Altos 580. I was informed by another member of the group that Teledisk 2.22 & 2.23 don't really work too well for this application and suggested Teledisk version 2.15n. That did the trick as to writing an image that the Altos could use. My 1.2Mb drive wrote the images (which were 96tpi) on a DSDD 48tpi disk just fine using the older but better version. If any of you are looking for where I got those images, there is a extensive collection in a zip (or tar) at: http://computer-refuge.org/classiccmp/altos580/ The real problem was me failing to hearing absence of the "click" of the heads on the Altos drop down. The head loading solenoid (sic) was sticky and with a bit of prodding now engages the heads with the accompanying successful loading of the disks. My thanks to those who offered to help (you know who you are!) However (and isn't there is always a 'however'), my next saga is to try and make a hard disk work with the Altos. I've tried various MFM drives from 10mb to 40mb but with no success. The heads don't seem to move on any commands, just the nice whirring of the main motor. The HD initialization program on my diagnostics disk doesn't seem to do anything and offers a limited choice of drive parameters. Therefore I'm assuming the massive amount of jumpers on the motherboard and disk controller card must have something to do with getting the HD going. Does anybody have documentaion on the 580 jumper settings or can shed any light on how to get HD's to work? I'm really enjoying this machine as it is fast, has gobs of memory and just plain looks good! Thanks, Gary F. on 11/25/04 9:15 AM, Gary Fisher at GFisher(a)tristonecapital.com wrote: > I'm trying to do the same thing with some (downloaded) Teledisk images for an > Altos 580 server which has a similar 96tpi floppy with no luck (a plea for > help here). > Gary Fisher C/O Tristone Capital Inc. Suite 1800, 335 - 8th Avenue SW Calgary, Alberta T2P 1C9 B: 403.303.8657 F: 403.294.9543 E:gfisher@tristonecapital.com This e-mail and any attachments may contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than the intended recipient is unauthorized and may be illegal. Unless otherwise stated, opinions expressed in this e-mail are those of the author and are not endorsed by the author's employer.

20 years, 7 months

hp2100s

by oceanid987＠yahoo.com

dear sir HEWLETT PACKARD Microprogrammable System Computer HP2100S is a compact data processor include: 32k word 16bit RAM , peripherals I/O interface,floating point and arithmetic capabilities,interrupt,two-channel DMA , operator panel CRT & KEYBOARD ,software for hp2100S : fortran,algol,basic .user can write progam and cpmpiling program and run it .several operating system are available HP7900A disc drive can store 5M byte in two disc fix and removable HP2100 or HP2116 with two I/O work with HP7900 disc drive (HP2100 have DMA). hp7900 work like floppy disc in PC.HP2100 designed in 1970. you know above information , but my project : i design one board install in PC for example in PII 333Mhz and connect to HP2100 (connect to I/O for HP7900A disc in 2100) HP2100 think connected to hp7900 but it connect to new board . new borad work like hp7900 data on hp7900 save in file on PC this board get data >from PC and send it to HP2100 or get from HP2100 and send to PC for replace in file. all thing work like hp7900 stuts word ,addressing,send and recive data. oceanid987(a)yahoo.com please connect me --------------------------------- Do you Yahoo!? Meet the all-new My Yahoo! – Try it today!

20 years, 7 months

electro-Physics: 3.3 volts

by melamy＠earthlink.net

there is a secondary aspect to voltage reduction and that is reduced power dissipation... which also translates to shoving more stuff into smaller spaces... -----Original Message----- From: "Joe R." <rigdonj(a)cfl.rr.com> Sent: Dec 9, 2004 9:51 PM To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> Subject: Re: electro-Physics: 3.3 volts At 09:30 PM 12/9/04 -0500, you wrote: >Today I started mothballing the VAX 6000 and noticed that a large part >of its power supply is on 3.3 volts, now common, but probably not in 1988. > >Seems like something was invented, probably in chip design that made >3.3 so useful. I wonder what that was, when that landmark was reached. It wasn't a new invention. In was the fact that ICs were getting so dense that they couldn't squeeze in any more circuits unless they could reduce the space that the insualting layers took up. The layers were already so thin that they'd break down at about 5 1/2 volt so they had to reduce the voltage to 3.3 volts. Since then they've further reduced it to 1.8 volts and (I think) now to 1.1 volts. And there are plans to reduce it even more. All so that they can reduce the bulk of the insulating layers and add more gates. Joe

20 years, 7 months

Shugart 850 drives

by melamy＠earthlink.net

I don't recall from the conversation... -----Original Message----- From: Vintage Computer Festival <vcf(a)siconic.com> Sent: Dec 9, 2004 11:57 PM To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> Subject: Re: Shugart 850 drives On Thu, 9 Dec 2004, Steve Thatcher wrote: > a heads up on California Digital, Although the owner still answers the > phone, the web site is basically bogus in that he sold off most everything > last spring. He still has drives I believe and some few miscellaneous stuff Oh yeah? Who did he sell it to? -- 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 ]

20 years, 7 months

Apollo 425e-looking for keyboard & Domain/OS

by Saquinn624＠aol.com

I aquired a "bare box" (HP/) Apollo 425e machine + memory & CD-ROM several months ago. What I have heard about Apollos sounds neat, but is geared towards people with complete systems. (1) I have no Domain keyboard, and from what I have seen the system does not automatically switch to serial for console, I've even tried it with the service switch set to "service"-it will display firmware self-test info on the graphics display and stop, but nothing on the TTY. Is there anyone with a extra Domain keyboard to sell or ideas for a way to use it without a Domain or HIL keyboard. (2) Domain/OS seems to be the neatest OS to run on it, does anyone have a copy of Domain/OS they would be interested in selling/trading? Scott Quinn P.S. My apologies if this is an inappropriate use of the list.

20 years, 7 months

Shugart 850 drives

by tomj＠wps.com

So what's the story with 8" DSDD floppy drives these days? Are they still available at all? I may need one for my old CP/M-80 machine; some meeces made a nice house and toilet in one. B: is now a single-sided drive, good enough for now, but not later, as the spindle bearing is VERY NOISY (always was). There may be a spare DSDD drive in a box of junk and/or I may recover the one that went weewee. My brother Gregg will ship the zenith monitor (the box uses a Solid State Music VB3a for 24x80 video) and parallel keyboard and boot flops next, then I'll worry about booting. The CMC Marketing chassis seems fine, powered up OK 10V, 18V, -18V, (empty of cards of course), there's little tanalums on the motherboard (for the terminator power supply) I'm running it empty for a few hours to see what gets hot or loses the all-important smoke inside. BIG ferroresonant power supply. I forgot all about the shredded finger callous from extracting S100 boards that don't have ejectors (all the time we used to discuss "standardized" board height utterly wasted... never happened...). Very nasty. Not all memories are pleasant. The board stack is: * Cromemco PRI hacked for port 74 (I have no idea why I did this; will have to RMOFM (*)) * Cromemco TUART hacked, looks like Parallel B pins wired to Serial B, RS-232 control? RMOFM * Cromemco 4FDC hacked, Apparat Trash-80 data separator added, if I remember head-load logic mumble for Shugart-type drives. * Industrial Microsystems 32K static RAM (no jumpers!) * Cromemco ZPU hacked, sigh, one jumper, RMOFM * Seattle Computer Producs SCP-16K 16K static RAM, quantity two. * SSM VB3a video terminal board, 6x7 fonts, no jumpers * Homemade EPROM/monitor card. (*) RMOFM = Read My Own F-ing Manual.

20 years, 7 months

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test-drb December 2004