test-drb

test-drb@ccmp.vtda.org

101090 discussions

by dwightk.elvey＠amd.com

>From: "Sellam Ismail" <foo(a)siconic.com> >On Thu, 2 Jan 2003, Dwight K. Elvey wrote: > >> >On Thu, 2 Jan 2003, John Lawson wrote: >> > >> >> On Thu, 2 Jan 2003, Vintage Computer Festival wrote: >> >> >> >> > I've got the PICK CHECK signal from the reader going into CB2. I have >> a >> >> > 1K resistor going from CB2 to ground. >> >> ^^^^^^^^^^^ >> >> Try changing to 5K or even 10K (what I always use for pull ups/downs in >> >> TTL work. I think you're burying the poor PICK CHECK signal. Actually >> >> all the resistors oughta be 10K, IMHO. >> > >> >I'll certainly try that. But I'm wondering why that should be necessary >> >when the 6522 data sheet says that particular pin is a TTL level output. >> >> Hi >> I thought you were using the pin as an input. As an input, >> there is no pullup and a floating pin would not be good. > >The pin is an input, but it's normal state is to be off/false. Therefore, >John's suggestion to put a pulldown resistor on it seems logical. It >should be normally off, and the M200 should bring it high when it wants to >signal the PICK CHECK error. > >I'm trying to troubleshoot a more pressing problem right now: the reader >is picking 5 cards before the Apple thinks 80 Index Marks (e.g. 80 >characters) have been detected. Either my code is wrong, my code is slow, >or the Apple is too slow to handle the reader input (in which case this >was all for naught). Hi It sounds like something is wrong. Are you reading with BASIC or at code level. I would think that assembly code should be able to keep up, as long as you were not expecting it to transfer to disk while reading. Does the M200 have any kind of handshake? Dwight > >I'm heading off to Radio Shack to take a mental break and to get some >resistors and to see if they can offer me more than just blank stares. > >Sellam Ismail Vintage Computer Festival >------------------------------------------------------------------------------ >International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > >

23 years, 3 months

M200 interfacing continues...

by dwightk.elvey＠amd.com

>From: "Sellam Ismail" <foo(a)siconic.com> > >On Thu, 2 Jan 2003, John Lawson wrote: > >> On Thu, 2 Jan 2003, Vintage Computer Festival wrote: >> >> > I've got the PICK CHECK signal from the reader going into CB2. I have a >> > 1K resistor going from CB2 to ground. >> ^^^^^^^^^^^ >> Try changing to 5K or even 10K (what I always use for pull ups/downs in >> TTL work. I think you're burying the poor PICK CHECK signal. Actually >> all the resistors oughta be 10K, IMHO. > >I'll certainly try that. But I'm wondering why that should be necessary >when the 6522 data sheet says that particular pin is a TTL level output. Hi I thought you were using the pin as an input. As an input, there is no pullup and a floating pin would not be good. Dwight > >Sellam Ismail Vintage Computer Festival >--------------------------------------------------------------------------- --- >International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > >

23 years, 3 months

ATT 6300

by cellhell1＠hotmail.com

I have an ATT 6300 with 640 kb ram, msdos 3.30 keyboard and monitor in working condition. The keys need some prompting but a good cleaning will probably work. I will only sell as a set. jim

23 years, 3 months

A couple of PS/2 items

by vance＠neurotica.com

Hi people. I'm looking for the chassis to a PS/2 Server 95. Not a 95XP, but a 95A. The one with the longer connector plate and two parallel ports. I'd prefer if it was somewhere in the northeastern U.S. The New York area would be optimal. If you want, you can have the PC Server 500 chassis from which I am borrowing the motherboard. Another thing is that I need the people who were interested in the PS/2 100Mbps ethernet cards to email me again. I now am able to send them out. $50+shipping apiece. The third thing is that I am looking for 8MB SIMM's for a PS/2 Model 95. They are the ECC kind. Fourth, I am getting rid of a lot of PS/2 SCSI cards, 286 RAM Expansion cards with RAM, and a couple of 386 RAM Expansion cards with RAM. I also have a couple of other weird MCA cards, so if there's anything in particular you're looking for, let me know. I do have a couple of IBM M-Motion Video Capture Adapter/A's *new in box*, if you're interested. That should be it. Peace... Sridhar

23 years, 3 months

DEC 3000 300X/300

by runtime＠wzrd.com

Bradley: Pat's advice about using RJ11 with the tab cut off is workable, but it's probably better to use MMJ if you possibly can. MMJ connectors are easy to find, and DB25 - MMJ adaptors are also easy to find. Then, all that's needed is 6 conductor flat cable, also easy to find, and an MMJ crimper -- not very easy to find, and expensive. I can easily make up MMJ cable(s) for you if you need one or two. I can check my stock of DB25/MMJ adaptors, too. What gender DB25 is needed? (I don't have a 3000 to look at, to make sure.) email me off list -- we can get this one worked out. Don

23 years, 3 months

Looking for small 32000 system

by jmkatcher＠yahoo.com

(Sorry if this is a repeat, but the original didn't appear on the list.) I've been looking for a Symmetric 375 (a rare beast) for sometime without luck and now I'd like to expand my search to other smaller 32000 machines (e.g. Tektronix 63xx/43xx and the lovely Whitechapel MG-1). Anyone looking for a good home for such a machine? Why 32000s? I just like to be different I guess. :) Best regards, Jeffrey Katcher jmkatcher(a)yahoo.com __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 3 months

ClassicCmp makes it to the big time

by foo＠siconic.com

An article from Reuters: New Appreciation for Old Computers http://www.reuters.com/newsArticle.jhtml;jsessionid=AS0NHSMHVCPNOCRBAEOCFEY… Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 3 months

M200 interfacing continues...

by dwightk.elvey＠amd.com

>From: "Sellam Ismail" <foo(a)siconic.com> > >On Fri, 3 Jan 2003, John Lawson wrote: > >> Bravo, Sellam! Really great work! Seems a simple modification to the >> program would allow it to read paper tape as well..... > >Actually, I was eyeing the pinouts of that paper tape reader that was >posted and was thinking, "Hey, I can build an interface for that" ;) > >Actually, my next task like this will probably be to get one of my paper >tape readers interface so I can start dumping all these paper tapes I have >from different systems. Hi Sellam You know I have a reader that I connect to a printer port on a PC? You can borrow that any time you want. Dwight > >Sellam Ismail Vintage Computer Festival >------------------------------------------------------------------------------ >International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > >

23 years, 3 months

[paul@vix.com: anybody want a vax 6400, sa600, tu81+?]

by jkunz＠unixag-kl.fh-kl.de

Hi. As this is a bit to big to ship across the "big pond"... Please contact Paul directly. ----- Forwarded message from Paul Vixie <paul(a)vix.com> ----- Delivered-To: port-vax(a)netbsd.org From: Paul Vixie <paul(a)vix.com> To: port-vax(a)netbsd.org Subject: anybody want a vax 6400, sa600, tu81+? X-Mailer: MH-E 7.0; nmh 1.0.4; Emacs 21.2 Date: Fri, 03 Jan 2003 03:36:15 +0000 Precedence: list this was matt thomas's but he left it at isc too long so i'm regifting it. anyone who can come to redwood city can have it. otherwise it has to go to the scrap yard. reply to me personally plz. ----- End forwarded message ----- -- tschüß, Jochen Homepage: http://www.unixag-kl.fh-kl.de/~jkunz

23 years, 3 months

Epson manual needed

by rcini＠optonline.net

Hello, all: This is my first post for 2003 so I'd like to wish everyone a happy and healthy New Year. Over the vacation I dug out my Seiko/Epson 486 computer. It's a POS (point-of-sale) computer that I bought from Timeline two years ago and that I sometimes use for simple PC-based data collection projects. It's a really small 486-based machine with 32mb of RAM and a 10g laptop drive. Unfortunately, I can't find the manual now and Espon's Web site doesn't have it. It's model IM-403/IM-405 (mine is the 405 but the models are essentially the same). If anyone has this and can make a copy, I'd appreciate it. Thanks. Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 3 months

OT: Solaris 8 on TP 760EL

by dwoyciesjes＠comcast.net

Apologies, I know this isn't really ClassicCMP related, but I'm hopeful that some of the Solaris admins here can help me out... I installed Solaris 8 2/02 on my Thinkpad 760EL. I chose the deafault end-user collection, plus the freeware file compression utilities... Now, when I start it up, or reboot it, the GUI is fine. But when I only logout, though, I get a bunch of vertical lines across the screen. I also get the lines when I select "Remote Login" from the Option menu on the login screen. Seems like something to do with the display manager restarting. I downloaded and added the XF86 packages from Sun (which included 2 patches), but those drivers were no help. I even found and tried a different .xqa driver description. No go. Anybody have any ideas? Feel free to respond to me directly... -- ---Dave Woyciesjes ---ICQ# 905818

23 years, 3 months

Rescuers in Peoria, IL area?

by DSEAGRAV＠toad.xkl.com

Most of the remains of my collection will become available in the next couple days. Known to be up for grabs here is a PDP-11/44 with a blown PSU (but otherwise working), a PDP-11/34A of unknown configuration, miscellaneous DEC paraphernalia, some MicroVAX stuff, and miscellaneous old modem equipment. Basically, I was thrown out of home some time ago, and left a lot of stuff behind as I had nowhere to take it. My mom is sick of waiting for me to take care of the remaining gear and wants it out, now. I have 3 weeks to move it or it goes to the dump. I have nowhere to take it and no foreseeable future for any of it in my possession. For some twisted reason I am taking the KS10 with me - I guess I don't quite want to admit that my career is over. I don't know how I'm getting it here but I'll push it if I have to, dammit. If nobody is in the area to save anything, I can salvage what I can and scrap the remainder. I'll have to visit the garage in the next couple days to see what exactly is left. I can't afford to ship anything anywhere. If you want something and I have it you have to come to Peoria, IL and get it. All of the boards I had have already been destroyed, as was most of the documentation and paperwork. If I don't get a response by the 10th I will assume nobody is available. Hopefully someone else can get a better run with this stuff than I could. -------

23 years, 3 months

Fw: [rescue] Fwd: anybody want a vax 6400, sa600, tu81+?

by rschaefe＠gcfn.org

----- Original Message ----- From: "Dave McGuire" <mcguire(a)neurotica.com> To: <rescue(a)sunhelp.org> Sent: Thursday, January 02, 2003 11:09 PM Subject: [rescue] Fwd: anybody want a vax 6400, sa600, tu81+? > Someone *please* rescue this. I'd do it myself but I have no way to > get it to this coast. Contact Paul directly. What he said! > > -Dave > > Begin forwarded message: > > From: Paul Vixie <paul(a)vix.com> > > Date: Thu Jan 2, 2003 10:36:15 PM US/Eastern > > To: port-vax(a)netbsd.org > > Subject: anybody want a vax 6400, sa600, tu81+? > > > > this was matt thomas's but he left it at isc too long so i'm regifting > > it. > > > > anyone who can come to redwood city can have it. > > > > otherwise it has to go to the scrap yard. > > > > reply to me personally plz. > > > > > > -- > Dave McGuire "She's a cheek pincher. I have scars." > St. Petersburg, FL -Gary Nichols > _______________________________________________ > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue

23 years, 3 months

Model III TRSDOS directories

by tim＠tim-mann.org

In case Sellam or others are still looking for info, I happened to find a pretty good summary of the Model III TRSDOS directory details on Ira Goldklang's www.trs-80.com site. See http://www.trs-80.com/trs80-pd.htm#mod3dir. -- Tim Mann tim(a)tim-mann.org http://www.tim-mann.org/

23 years, 3 months

This Old Scope

by rhudson＠cnonline.net

Hi, In the San Jose, CA area... I have a tektronix type 310A o'scope that needs some help in the horz. sweep area. I am not well versed in the art of component level repair. What can I do to get this guy back up and running? Thanks for your help! Ron.

23 years, 3 months

PDP11/73 power-up codes

by david_comley＠yahoo.com

I'm sure this is a familiar question to many - does anyone have a list of the two-digit codes displayed on the PDP11-73 during power-up ? I am resurrecting a dormant unit which stops at '1' (I have only the CPU and memory installed in the backplane) I'm not sure if this is a good or a bad code. Any help would be appreciated. Thanks, David Comley __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 3 months

Two great Finds Today

by jrkeys＠concentric.net

A friend stopped me in the parking lot of an auction today and gave me a box full of computer stuff and in it was a TI-74 BASICALC with a carrying case and 8k RAM module in it. Also it came with a Quick Reference Card for Basic Syntax. At the auction I got something called "The Brick" by Ergo computing Inc.. It's a cool looking 386SX-16 as per this article from a google search: "The Ergo Brick, a 3" x 8" x 11" totable PC, was billed as the "cure for the common computer." With a keyboard and monitor at home, another at work, it gave desktop power in a portable package. Today you could fit three PowerBook G4/500s in almost the same amount of space as the $2,495 16 MHz 386sx-based Brick.". I got the CPU, power supply, manual, and a carrying case. The keyboard was missing.

23 years, 3 months

Two great Finds Today

by healyzh＠aracnet.com

> At the auction I got something called "The Brick" by Ergo computing Inc.. > It's a cool looking 386SX-16 as per this article from a google search: "The > Ergo Brick, a 3" x 8" x 11" totable PC, was billed as the "cure for the > common computer." With a keyboard and monitor at home, another at work, it > gave desktop power in a portable package. Today you could fit three > PowerBook G4/500s in almost the same amount of space as the $2,495 16 MHz > 386sx-based Brick.". I got the CPU, power supply, manual, and a carrying > case. The keyboard was missing. Hey, that's pretty cool. I remember drooling over adds for those around 1990! If you look through issues of "PC Magazine" from about that timeframe you should be able to find the adds. Of course I didn't remember it being so big... Didn't they give it a greyish bricklike finish? Zane

23 years, 3 months

DEC TU-56 & TD8E

by cmcnabb＠4mcnabb.net

I believe I now have my TU-56 and TD8E working. When I mount a tape and attempt to boot my one OS/8 tape it loads to the point of printing "SYSTEM ERR" on the teletype. I strongly suspect that the tape is probably corrupt. I'm wondering if there is anyone out there who would be willing to copy any kind of Bootable PDP-8/E tape for me so I can test with a known good tape. I would be more than willing to provide a couple of tapes for the copy. -- Christopher L McNabb Operating Systems Analyst Email: cmcnabb(a)4mcnabb.net Virginia Tech ICBM: 37.1356N 80.4272N GMRS: WPSR255 ARS: N2UX Grid Sq: EM97SD

23 years, 3 months

M200 interfacing continues...

by dwightk.elvey＠amd.com

>From: "Sellam Ismail" <foo(a)siconic.com> > >On Thu, 2 Jan 2003, Tony Duell wrote: > >> > The main problem I'm having is reading the control lines of the 6522. >> > According to the spec sheet, CB1, CB2 and CA2 are all supposed to be TTL >> > level outputs when programmed for such. So they are, but I'm having >> >> Do you mean output or input here? If you're reading a pin, then I would >> have assumed you were using it as an input. > >Sorry for confusing the hell out of anyone. I meant input. From the 6522 >datasheet: > >"CA1 is a high impedance input, while CA2 represents one standard TTL load >in the input mode." > >...and regarding CB1 and CB2... > >"Each control line represents one standard TTL load in the input mode and >can drive one TTL load in the output mode." > >> Try a pull-up instead (TTL sinks a lot better than it sources). In other >> words change the end of the resistor from ground to +5V >> >> make this +5V >> | >> V >> > READER SIGNAL----+----/\/\/\-------GND >> > | >> > | >> > 6522 CB2 > >Wouldn't this give me a default state of logical true on the input pin? Hi For a TTL, one normally has an open pin set to one. One pulls it to zero to be active. Ever notice that all of the strobes and such for things like parallel ports on a PC are always negative. For those pins that you are using as inputs, make sure that you've set the direction register correctly. Dwight > >> If you still have problems, then maybe the driver chip in the M200 has >> died. It happens. I've had a couple of HP9810 calculators across my bench >> where there were 10 or so dead TTL chips (74Hxxx TTL chips especially) >> that appeared to work, but which couldn't give a proper output signal, >> so the chip it was connected to didn't always get the right logic level. > >Well, it works, just not all the time. So from what John has told me, it >seems like the signal is just being lost half the time. > >Sellam Ismail Vintage Computer Festival >------------------------------------------------------------------------------ >International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > >

23 years, 3 months

M200 interfacing continues...

by vcf＠siconic.com

Ok, I'm almost there. I've got everything wired up and most of the driver software done. The main problem I'm having is reading the control lines of the 6522. According to the spec sheet, CB1, CB2 and CA2 are all supposed to be TTL level outputs when programmed for such. So they are, but I'm having trouble reading CB2 reliably. I put a pull-down resistor on it but that doesn't help. The signal to it is spotty for some reason. I've got the PICK CHECK signal from the reader going into CB2. I have a 1K resistor going from CB2 to ground. READER SIGNAL----+----/\/\/\-------GND | | 6522 CB2 If there's an error (misfeed for instance) CB2 should get a logical TRUE. This works sometimes, but not always. And it's the same whether I have the pull-down resistor or not. I'm using CB1 reliable without the need of a pull-down resistor. I don't know if it's sloppy code or a bug, but the Apple doesn't seem fast enough to read and process the data character by character. I would think that it should be fast enough to do so but I'll have to check the timing on the loop and see if it falls within the specs of each column read from the reader. For now I've switched to buffering the data and then processing it after each card read, controlling the picker with the software to control the flow of cards. I'm figuring out the code for the last piece which decodes the row pin into a decimal number. What's the best way to do an nth root operation in 6502 assembly? :) Crummy way: LDY #00 LOOP INY LSR BCC LOOP This assumes only 1 bit is set in the accumulator. It loops until the bit falls off from the LSR operation. Assuming the accumulator has #80 to begin with, the Y-register result should be 8. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 3 months

Oersted Ratings of DC300A and DC600 Tape Cartridges

by aek＠spies.com

http://www.qic.org/html/standards/9x.x/qic95-101e.pdf dc300 dc300xlp 310 Oe dc600A 550 Oe I have a curve in an early wangtek manual about this, too.

23 years, 3 months

PDP9 Control Store on eBay

by jpl15＠panix.com

Browsing along, found this: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2085798445 Listed (and pictured) as a MC09 (G920D) card. Hex-height, four green tabs. The description says it's 64 words of 36 bits each, Read Only. Minimum bid: $30.00. No buy-it-now. Cheerz John

23 years, 3 months

Compaq 286/SLT (was RE: Anyone have any experience replacing a Dallas 1287 with a 12887?)

by Robert_Feldman＠jdedwards.com

According to the Guide, the p/n's should either be 110091-011 and 110092-011 (for ROM Revision H.6) or 110091-0012 and 110092-012 ( for Revision H.7). Bob -----Original Message----- From: Ethan Dicks [mailto:erd_6502@yahoo.com] Sent: Thursday, January 02, 2003 10:09 AM To: cctalk(a)classiccmp.org Subject: Compaq 286/SLT (was RE: Anyone have any experience replacing a Dallas 1287 with a 12887?) <snip> My ROMs have stickers with p/n 110091-011 and 110091-012, (c) 1988. -ethan

23 years, 3 months

Z8000-Fan

by dwightk.elvey＠amd.com

Hi David It may not be as hard as you'd think. First, you don't have to cross compile CPM-8000. There already is a CPM-8000. Recently, source and release code was found for this and, working with Chris Groessle, we've managed to bring it up on our Olivetti M20's. This code was originally written for the M20, as it was the only major machine sold with a Z8000 ( there were a few SBC's out there ). The release comes with a C compiler and an assembler. There is source code for the BIOS as well. It does depend on the M20 ROM code for low level access. This CPM was mostly written by a combination of Zilog and DR people. It is mostly written in C with a minimum written in assembly. There are a few issues. Even though the manual says you can get by with only 128K, this would be difficult. Several of the utilities require two 64K chunks ( one for instruction and one for data ). It would be best if the other system functions had there own piece of RAM to work in. One needs to map the memory such that you can access a single 64K as both instruction and data as well as the 128K as 64k instruction and 64k data. The bad news is that we don't have the complete source for the CPM. The BIOS does require that it be compiled on a running CPM-8000. As the documents state, it would be difficult to build it on some other system. Still if someone is willing to write a BIOS for their board, I'd be willing to compile the code for them on my machine. Dwight >From: "Kane, David (DPRS)" <David.Kane(a)aph.gov.au> > >Hi, > >I always wanted to play with this processor, I just never got the chance. I have a copy of the Zilog "Microcomputer Components - Data Book Feb 1980" and a copy of "Programming the Z8000" (a Sybec book), but that is about as far as I ever got. I was tinkering with the thought of modding the SIMH emulator to include a Z8000 system, but I don't have any details or experience of any real systems. I then though to invent a fictitious S100 system, based on the existing Altair emulation, but with a Z8000 CPU. This could most likely run a CPM8000 system, with the appropriate BDOS changes. But a lot of work would be need to get a set of compilers/cross compilers for the Z8000, either in tracking them down or writing them. I saw recently that BDS C has been put into the public domain with full source, so there might be some avenue there. Still to generate CPM (or MPM) for a fictitious machine would be a mammoth undertaking, I have all the source code needed, just not the compilers. It would require an 8080/Z80 to Z8000 cross assembler (to avoid rewriting all the assembler), a Z8000 PLM compiler, and a Z8000 C compiler. > >Anyway I am declaring myself an unfulfilled fan of the Z8000 processor family. > >David Kane > >-----Original Message----- >From: G?nter Mewes [mailto:info@mewesbus.de] >Sent: Saturday, 28 December 2002 12:49 AM >To: cctech(a)classiccmp.org >Subject: Z8000-Fan > >Hi Mr. Johnston, >today I was looking for some Z8000 Fans, to talk about experieces ... >Are you interested ? > >Please, be so kind and send a mail. > >Guenter Mewes (www.guentermewes.de)

23 years, 3 months

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