test-drb September 2013

test-drb@ccmp.vtda.org

168 participants
203 discussions

by earl＠retrobits.com

Hi all, I'm looking for an OS/language package for the PDP-11 called SOL-11. The download links I've found via Google are dead. There used to be a tar.gz file out there somewhere but it has vanished. Also, it needs an assembler called BTN-11 (which I would need also). Anyone have this handy? :-) Thanks, - Earl

11 years, 2 months

VCFMW 2013 Price List- Everything is Or Best offer or Trade

by slandon110＠gmail.com

Just got done doing my 2013 Pricelist for VCFMW. Thats not everything either, I have a trailer packed full of goodies Everything is Or best offer or trade heres the list https://docs.google.com/document/d/1cJkLE-VZXpEQ8RwxG6MiOckqwz3VQ_sVZVQfoTn… Some of the things im looking for: NeXT Cube Sun Sparcstation 20 SparcStation Voyager VT-100 Terminal Commodore 1084S Monitor x2 Commodore 64/128 Accessories Atari 16 Bit system STE, Atari TT. Atari 8 Bit System 800XL,1200XL Some sort of Unix system, IBM, DEC, something that runs AIX/Unix. Or whatever you got, worst I can say is im not interested. Im bored with Apple stuff See you at the show. Ill be in a black blazer with a green trailer attached. Stuff is priced to move.

11 years, 2 months

Apple II keyboard replacement: MM5740-AAE with wrong marking?

by shadoooo＠gmail.com

Hello. I'm repairing an Apple II keyboard, where I needed to replace a defunct MM5740-AAE/N. I bought a couple of new MM5740-AAE/N from Littlediode, they arrived and have a quite modern aspect and National logo, while the old broken IC has no logo. Maybe they are coming from a more modern production... I tried both on the keyboard, same behaviour: the keyboard itself works, but I receive wrong key codes from it. I checked with another keyboard, computer is working fine. I double-checked the MM5740 marking, it's absolutely correct. Of course I checked for sticky bits, or logic problems, but nothing strange there. I wrote down a key "replacement" table, and from what I see these AAE encoders are generating codes exactly like they was AAD version... Maybe here there's a problem of wrong markings over the ICs? Anybody ever heard of similar issues, or bought these encoders from Littlediode and had similar problems? I suspect that they came from a production lot wrongly-marked. Andrea

11 years, 2 months

Sun PC-NFS & FTP Software PC/TCP

by kris＠catonic.us

I have: two copies of Sun PC-NFS V5.1, including all the paperwork A copy of FTP Software PC/TCP V2.3 A copy of FTP Software PC/TCP V2.2 If anyone wants them. Nothing heard in a week and the paper (manuals, etc.) hits the recycling bin. -- Kris Kirby, KE4AHR Disinformation Analyst

11 years, 2 months

Encore Multimax...

by jon＠jonworld.com

All, As a few of you know, I have the old Encore Multimax from Purdue, which came to me by way of Pat Finnigan's collection. I plan to get her running (at least power her up and see what sparks fly) in the next few weeks as long as the weather remains "fall-ish." I'm wondering how many of these are left? The CHM in Silicon Valley seems to have one, but the one they have seems very different from mine. As of 1995 Brown University seems to have had one, but I don't know if they still have it or if it is scrapped. There is also 0 documentation and software on bitsavers. I'll gladly send stuff over to them once I figure out what I'm doing with mine. Are there any other of these systems left? -- -Jon Jonathan Katz, Indianapolis, IN.

11 years, 2 months

Empty H9273 card cage?

by fraveydank＠gmail.com

This is a long shot, but: I got a bare H9273 backplane (9-slot Qbus, 18-bit) off a fellow list member. It's been languishing in my parts area for a while while I try to figure out what to do with it. If someone happens to have a bare card cage that fits it (I think it's mechanically identical, or at least compatible, to the H9276), I'd be much obliged and would pay a reasonable sum of money for it. I don't need a full H9273 backplane/cage assembly, since my entire intent is to make use of the backplane I have. Otherwise, if anyone has any experience designing and fabricating card cages on the cheap, I'd be interested. I initially considered doing something out of wood, since I don't have much in the way of metalworking tools, but that presents some obvious airflow issues. It's still looking like the best option for me if I just cut the sides away aside from some columns for mounting the plastic card guides. - Dave

11 years, 2 months

Info about Z80 machine

by mtapley＠swri.edu

At 22:52 -0500 9/22/13, Chuck wrote: >Does generalization always win out over specialization? Should my >subcompact car also serve as a 10-ton dump truck? <Looks out window at parking lot full of huge pickups and SUV's used as single-occupancy commute vehicles> .... <goes back to reading email on "old" "slow" Powerbook G4> .... Sigh. For most of what I've done today, my DEC Rainbow would actually have been fine. Probably my Tandy CoCo, although I don't know that a text email client for that one ever existed. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

11 years, 2 months

PDP-8/L current loop -> RS232 help

by michael.99.thompson＠gmail.com

>From: Josh Dersch <derschjo at gmail.com> >Date: Tue, 17 Sep 2013 21:09:46 -0700 >Subject: Re: PDP-8/L current loop -> RS232 help >Sorry to reply to my own post here, I had a bit more time to screw with this this evening. Turns out it was a programming error (actually a program entry error :)) that was (apparently) causing the 40mA current instead of 20mA -- the >little "echo" program I coded up wasn't properly waiting for data to come in before echoing it back, so the 8/L was constantly sending 377 back across the loop, which I'm assuming accounts for the difference? >With this corrected, the loop is registering ~23mA idle, dropping to 19-20mA when the PC attempts to send data. Can anyone comment on whether this sounds reasonable? Anyone have any advice? (Getting desperate here :)). >Thanks, >Josh If you intend to use your serial interface with to load RIM/BIN formatted tapes you may need to implement the READER ENABLE signal. This signal comes >from the M706 module and goes to the CTS signal on the serial port. Your terminal emulator can be programmed to only transmit when the CTS signal is active. This signal will also allow you to modify the TTY port to run at much higher speeds than the standard 110 baud. -- Michael Thompson

11 years, 3 months

Collection to sell

by gary_neier＠yahoo.com

Hi All, I'm helping a friend, Barry, with clearing out his collection of computers, manuals, etc. He has a lot. Here is an initial list. -- a Digital PDP-8L -- a Digital PDP-11/35 -- a Data General Nova 1200 -- at least two Deskside Solbourne systems (these are Sun Sparc based multiprocessor computers), spares, and the installation media on CD-ROM for the special version of SunOS they ran. -- At least a dozen Sun Sparc1 and Sparc2 workstations -- lots of DEC desktop VAX, Alpha -- lots of q-bus pdp-11 systems and parts, several BA-23 (perhaps as many as a hundred cards) -- a number of IBM RS/6000 systems -- a number of HP 9000 systems -- still more sparc workstations including at least one each sparc-10, one sparc-20, one ultra-10, the "lunchbox" -- a variety of screwball laptops including two Tadpole sparcbook laptops -- at least two early 68K macintosh laptops, appletalk and an ethernet to appletalk bridge -- everal 9-track tape drives (not to mention tapes, including a Unix V7 distro tape) -- an AT&T 3B1 -- an Anderson-Jacobsen serial printer (based on the IBM Selectric mechanism) -- A Digital PDP-11/70 in the "blue" trim (blue and white switches) in a double-wide corporate cabinet -- lots of IBM PC type gear, spanning many generations. -- lots of computer-ish books.? -- Ancient software (Ashton Tate DBase IV, maybe?) -- A Livingston Portmaster -- A Gould Biomation K100D and a Gould Biomation K101 logic analyzer. I have service manuals for the K100D, and enough cables for one or the other. -- Lots of S-100 cards and parts including both Z80 and 8086 -- An Imsai 8080 S100 system with the lights-and-switches front panel -- An Ithaca Intersystems S100 system with the lights-and-switches front panel -- An Altair 8800 system -- A Seattle Computer Products S100 system (this is what the original ms-dos was developed for by Tim Paterson ) -- A SAGE II 68K with CP/M-68K? -- A Sun-2 in dual deskside cabinets with a Fuji 9-track drive? -- The Siemens equivalent of an ASR-33? Let me know if you are interested. Some of the bigger items can't be shipped. We are in Santa Cruz, California. -Gary

11 years, 3 months

Info about Z80 machine

by supervinx＠libero.it

Hi! I found a Z80 based machine. Externally looked like an XT clone, with a wooden (!) case. Inside, I found a Z80 based MB (all chips are socketed) and a WD-1001 card. Yes, there's a floppy drive, and HD and a unusual tape streamer. On the rear, six DB15 female ports and a 50pin connector. The label says EMI Computer Systems Italy, Model 80/30 (BTW it's different from the IMSAI 80/30). I read the 4k (2732) EPROM, which contains a small monitor, allowing to boot from various sources. Nothing more. I assumed the six ports to be serial ports. I connected a terminal (virtual, putty) through a null modem cable (the one I used for all console operation) and powered the machine up. Floppy and HD led were lit, but saw no activity on the ports. I tried various speeds (1200, 2400, 4800, 9600). The reset switch makes the HD led go off and on, so something still works... 1 I haven't any info about this old beast, so can't tell if it's broken or I'm wrong somewhere. Must try without the null modem cable... Did you ever see that brand (EMI Computer Systems)? Thanks! -- Vincenzo (aka Supervinx) --==ooOoo==-- My computer collection: http://www.supervinx.com/Retrocomputer --==ooOoo==-- You can reach me at: www.supervinx.com www.facebook.com/supervinx http://www.youtube.com/user/supervinx http://www.myspace.com/supervinx

11 years, 3 months

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test-drb September 2013