test-drb December 2001

test-drb@ccmp.vtda.org

243 participants
1096 discussions

What did you ask "Santa" for this year.... : )

by mranalog＠attbi.com

Matt wrote: > So what is everyone else on the list asking for? Computer related... of > course..... I'm getting a nice 100% mechanical analog. http://dcoward.best.vwh.net/analog/libra.htm It's coming by Big Brown sled as we speak. Reagards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

23 years, 11 months

6502/Z80 speed comparison (was MITS 2SIO serial chip?)

by ajp166＠bellatlantic.net

From: Richard Erlacher <edick(a)idcomm.com> >without modification, in most cases, on a Z80,.by the time the 6502 became >popular. Now, I've always believed the 6502 at 1 MHz to compare favorably with >the 4 MHz Z80, but I used the Z80 running CP/M 2.2 to do useful work, since it >was a lot more trouble squeezing useful work out of a 6502 back in '78-'79. If anything I'd say CP/M was a factor more than any virtue of Z80. I say that as most "z80" code underused the Z80 as a fancy 8080. One may wonder if a cp/m like (or better!) OS existed for 6502 such that it was portable or easily ported if things may have developed differently. Allison

23 years, 11 months

D*A*T*A* I*/*O* M*a*n*u*a*l*s

by mranalog＠attbi.com

Last fall I suddenly, in the space of two week, received five requests for a D*A*T*A* I*/*O manual I mentioned on ClassicCmp back in 1999. Thank to help from Arlen Michaels, I got all of those requests filled. Now, I don't mind copying manuals, but after two years and one move the manual and the files where a pain to dig out of "the pile", and these were not list members. So, the ClassicCmp list archive is the reason for the "*"s. Now, one of the people that requested a manual sent me a couple of PDFs that I wondered if anyone here would like to host? I want to get them out there so everyone can use them, but I didn't want to keep getting requests years from now via the archives. 1. D*A*T*A* I*/*O* 2*9*a* U*n*i*v*e*r*s*a*l* P*r*o*g*r*a*m*m*e*r* 9*9*9*-*0*0*2*9* dated May 1982 102 pages (includes schematics) size - 10 MB 2. D*A*T*A* I*/*O* U*N*I*P*A*K* 2* dated 1984 76 pages (includes family, pin*out codes and schematics) size - 8 MB So, if ONE person would like to host these files, (and not mention my name) I can put them up on the web one at a time to be grabbed. Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

23 years, 11 months

summit electronics

by Golemancd＠aol.com

anyone ever use this web site i cant get a response from them joe also this one http://www.summitelectronics.com http://www.ied.pios.com/

23 years, 11 months

CoCo & MOS books

by mhstein＠usa.net

Three more books available: RS TRS-80 Color Computer Technical Reference Manual 26-3193, 69 pages RS TRS-80 MC-10 Micro Color Computer Service Manual 26-3011, 47 pages (Photocopy purchased from RS) MOS Technology MCS6500 Microcomputer Family Programming Manual, Jan '76, 8 1/2x11, approx. 200 pages. Will throw in Synertek 6500 & 6500B data sheets full of timing and cycle time info so you can join the fascinating (!) discussion presently raging among Dick, Allison & Ben. $4.95 ea plus postage, or BO, if anyone's interested. Meanwhile, the very best wishes of the season to everyone on the list; nice to have met all of you, virtually speaking, and especially the two I've had the pleasure of meeting in person. To those of you still patiently waiting to hear from me regarding items of interest, I haven't forgotten. Bear with me, and after the Xmas rush at the post office, I'll get back to you. And may the New Year be a more peaceful and less traumatic one than this one's been (although it doesn't look good...) Happy & fruitful collecting! mike

23 years, 11 months

What did you ask "Santa" for this year.... : )

by csmith＠amdocs.com

> -----Original Message----- > From: Loboyko Steve [mailto:sloboyko@yahoo.com] > Where can I get one of these. Not the SGI Indy... I'm not sure, actually, I think it was a limited edition or possibly a prototype that they -- for some stupid reason -- never allowed to reach production. In fact, if you take "classic computer" as a descriptive term for a person who uses "classic computers," maybe she should go on the "hardest to find classic computers" thread. ;) Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 11 months

[tfitch@esleeck.com: PDP11]

by mrbill＠mrbill.net

Please contact Thomas directly if interested. I'm just passing this on. Bill ----- Forwarded message from "Thomas R. Fitch" <tfitch(a)esleeck.com> ----- From: "Thomas R. Fitch" <tfitch(a)esleeck.com> To: "'mrbill(a)pdp11.org'" <mrbill(a)pdp11.org> Subject: PDP11 Date: Fri, 21 Dec 2001 15:19:23 -0500 Mr. Bill, I have a PDP11 in two towers, with 2 crt's and keyboards, and a keyboard printer. All in excellent condition. I also have all of the original documentation. This product is available for pickup from our Turners Falls, MA location. Please contact me if you have any interest. Tom Fitch, Treasurer Esleeck Manufacturing Company 36 Canal Road Turners Falls, MA 01376 (413) 863-4326 ext 206 ----- End forwarded message ----- -- Bill Bradford mrbill(a)mrbill.net Austin, TX

23 years, 11 months

Pyramid 90x

by dancohoe＠oxford.net

I recently brought home a Pyramid 90x. The old owner who had run the machine at his work in the 80's bought it from his employer about 1990, but never got it set up at home. Apparently he decided to dump it a few months ago, but because of its size didn't get the job done. However, he did put all of the software and the documentation on the curb for the garbagemen at that time. Mike Kenzie and I got there just before he called the recyclers for the machine itself. What I need is a boot disk or other software and any documentation that might be out there. According to the old owner, it starts by loading the boot program off the 8" floppy before it can find the fixed disks. Does anyone have anything for this machine? thanks, Dan Cohoe

23 years, 11 months

Power Series

by csmith＠amdocs.com

> -----Original Message----- > From: Tothwolf [mailto:tothwolf@concentric.net] > Nice...I have a number 4D series machines myself. I haven't > yet found a > source for IRIX 4.0.5 and 5.3 for them tho :/ I have Irix 5.3 on CD-ROM, and have been assuming that will work for now. I also have the original disks (two of them) in the machine. > You can boot these machines with a dumb terminal on the first serial port. > The serial ports have a different pinout then just about any other > computer. I have a url with the info somewhere, and will look for it. Yeah, but it's an SGI ;) > I would recommend you have an electrician install a dedicated 20 amp > circuit. These machines are meant to be breakered at 20 amps. > I would not > recommend sharing an existing major appliance circuit, since you might > forget the computer is on and turn on the appliance. I am kind of leaning towards that option. The only question is price. My guess is it should certainly be less than $200 or so to have done, and likely less than $100, depending on the work involved. That is a guess, though. > holds the power switch. If you unscrew the retaining screw on > the metal > plate, it should slide out and have enough cable to set it on > top of the > machine. I've taken a look at the card-cage, actually. From your description of VGX graphics, it seems to me (not having the thing in front of me right now) that I may have had too many boards. What are the chances the graphics have been upgraded without changing the tags? Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 11 months

DEC bus driver/receiver chips

by djg＠drs-esg.com

>From: "Carlini, Antonio" <Antonio.Carlini(a)riverstonenet.com> > But I don't have that one - or anything > PDP-8 related ... anyone have WT78 > printsets or docs? :-) > Yes (assuming the VT78/WS78/WT78 are all the same thing). Are you needing some part in particular or just general looking? David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights.

23 years, 11 months

6502/Z80 speed comparison (was MITS 2SIO serial chip?)

by CLeyson＠aol.com

Come on guys cool it. Who really cares if a Z80 is faster than a 6502 ? I sure as hell don't. For those who are interested check out the following: US Patent 4004281 Microprocessor Chip Register Bus Structure (6800) US Patent 4332008 Microprocessor Aparatus and Method (Z80) US Patent 3991307 ...on the fly correction to provide decimal results (6502) By the way, the 6800 Patent has complete circuit diagram. The Z80 also contained DRAM refresh circuitry that the 6502 didn't.

23 years, 11 months

Need manual for Everex digital cassette drive

by dhquebbeman＠theestopinalgroup.com

> Does anyone have a manual, or know how to operate, an Everex digital > cassette drive? > > The one I have is all black, and has a DC-37 connector on the back that I > assume connects to an old-style IBM PC drive interface. If this is the > case, I assume I still need drivers to run this thing? And maybe some > operating software? An original IBM PC with the BASIC ROMs should be able to load >from cassette using LOAD and save using SAVE, shouldn't it? ? -dq

23 years, 11 months

Now I'm impressed.

by csmith＠amdocs.com

> -----Original Message----- > From: Doc Shipley [mailto:doc@mdrconsult.com] > prompt on a v5.2 VAX/VMS system. OK, now I'm looking at the command > prompt. The SYSTEM password was "system". > TeeHee. I've had SYSTEM, "MANAGER" before. :) You can boot them conversationally, of course, even if you don't have the password, and gain privilege. I've done this on a good three or four machines, and there are a couple different ways to manage it. Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 11 months

Round two: PC vs the Dishwasher

by rschaefe＠gcfn.org

Well, it turns out the case isn't in as good of shape as the boards inside it. After a good washing, the cover has surface rust all over it. Not from the washing, but from the 'storage' it sufferred thru before I came across it. I ended up taking out the top drawer to make enough room to stand the case on it's end. I tried with it sitting flat on the top of it, but that didn't work out so well-- hadda run it thru twice. Bob

23 years, 11 months

8284a, where to find?

by ajp166＠bellatlantic.net

From: Robert Schaefer <rschaefe(a)gcfn.org> >look for another one-- mouser and digikey are all that comes to mind. (Is >this an 8284a, or an 8284?) The 8284 and the 8284A are not the same part and it will make a difference. The 84A is easy to fins and common to many clone wrecks. Allison

23 years, 11 months

6502/Z80 speed comparison (was MITS 2SIO serial chip?)

by ajp166＠bellatlantic.net

From: Richard Erlacher <edick(a)idcomm.com> >There are lots of things that you could compare, but the first things you've got >to leave out are the ones that aren't a Z80, which immediately deletes the Z180, >and Z280. The Z80 is not around any more than the 6502 is around. There are Why? they are still z80 core and code compatable. While they add things like serial IO, timers and MMU they are Z80, maybe more so than 65C02. Allison

23 years, 11 months

MITS 2SIO serial chip?

by ajp166＠bellatlantic.net

From: Bill Pechter <pechter(a)ureach.com> >IIRC the Intel 8251 did full Sync as well as >Async which was a plus. It's annoying Yes, worked ok too. >drawback -- (DEC used it in the Robin and >Rainbow) was the lack of modem flow control >support. Design limited but it was there in the Robin. The robin was full modem controls on the comm port. >I'd have killed for an 8251 with >CTS/RTS/DSR/DTR and DCD all on chip. The only one the 8251 doesn't handle or have a pin for was DCD. The others are all there. >Perhaps it should've been done on two chips >if Intel couldn't get it on one. Pincount, they would have needed a 29 pin. ;) Allison

23 years, 11 months

Microchannel FDDI

by vance＠ikickass.org

Hi. I am looking for Microchannel (MCA) DAS FDDI cards for my RS/6K's. Thanks. Peace... Sridhar

23 years, 11 months

ROM preservation (Data I/O system 19)

by CLeyson＠aol.com

Geoff Reed wrote > I don't suppose you have the schematics for a model 29? Sorry Geoff can't help there. However if enough people are interested I am prepared to draw up the System 19 schematics in Orcad and provide a dump of the software. As the programmer is 20 years old, it falls into the classic category and should be documented somehow. More important still - programming algorithms for vintage silicon should be documented. Chris Leyson

23 years, 11 months

Microchannel FDDI

by SUPRDAVE＠aol.com

In a message dated 12/21/01 5:19:04 PM Eastern Standard Time, vance(a)ikickass.org writes: << Hi. I am looking for Microchannel (MCA) DAS FDDI cards for my RS/6K's. Thanks. >> Ive got two SKNet ones that i'd be willing to trade provided you can find me some Serverguard cards...

23 years, 11 months

ROM preservation (DataIO system 19)

by CLeyson＠aol.com

Correction: Supports devices up to 27256 and Intel Intellec 8/MDS

23 years, 11 months

ROM preservation

by csmith＠amdocs.com

I've been thinking recently that I should possibly get a ROM reader/writer so that I can preserve the ROMs out of all my old parts, and I was wondering whether anyone had some experiences (good or bad) with any different programmers? Which programmers are good, which aren't so good, and why? Where is the best place to get one, and which is the best to get on a tight budget? What about making your own? (Note that I think this may be an interesting project, but I'd really rather put my time into other things right now, so this is near the bottom on my list of options...) One called "Leaper 3" interests me because of its ability to copy one ROM to another without any kind of computer hookup, which I imagine might be useful, but I know nothing else about it. Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

23 years, 11 months

HP 1000/E

by pete＠dunnington.u-net.com

On Dec 21, 11:35, Steve Robertson wrote: > Took deliveery of my "New" HP 1000/E last week and yes Virgina, there really > is a Santa Clause. For those who would bash eBay, here's proof that there > are good deals to be had. Nice machine! I can see why you'd be pleased :-) -- Pete Peter Turnbull Network Manager University of York

23 years, 11 months

ROM preservation

by CLeyson＠aol.com

DataIO and Stag programmers seem to be the industry standard. I picked up a DataIO system 19 on ebay recently. It will do vintage eproms up to 27128 as well as bipolar proms, no support for PAL's and PLA's. Comes with RS232, and supports most data formats except Intel Hex. Chris Leyson

23 years, 11 months

siemens nixdorf laser printer drivers--model pageprinter md12.

by ROCKYROADENNIS＠aol.com

printer-driver needed for above printer regardsrockyroadennis(a)aol.com

23 years, 11 months

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test-drb December 2001