test-drb October 2007

test-drb@ccmp.vtda.org

228 participants
467 discussions

DEC Gamma-11 units in private collector hands?

by philippe＠cowpig.ca

Hi everyone, Being personally quite interested in DEC's laboratory systems, I stumbled a few days ago upon some scant details on DEC's nuclear medical imaging system, the Gamma-11. Apparently this PDP-11 was designed to be connected to a Gamma Camera, and had a VT11 or VSV11 display system connected to it. As well, along with it came a modified version of RT-11. I was wondering if anyone on the list had one of these machines and knew what parts made the hardware a Gamma-11, as well if anyone had manuals online that they might share, as well as potentially the software for the unit. There's not really much that I can see on Bitsavers, but I might not have looked hard enough; I found the VSV11 and VT11 option manuals, but that seemed to be about it. Cheers, Phil

17 years, 1 month

Indigo 2 and registered/buffered SIMMs.

by trasz＠FreeBSD.org

Memory for Indigo 2 (IP22) needs to be FPM with ECC. But I couldn't find anywhere if these SIMMs may be "registered", aka "buffered". I see quite a few cheap FPM ECC SIMMs for sale, but most of them have some strange additional chips on them, I guess that means there are of the buffered kind. Will these modules work in I2? -- If you cut off my head, what would I say? Me and my head, or me and my body?

17 years, 1 month

dsdd floppies

by dm561＠torfree.net

Date: Sat, 27 Oct 2007 20:37:35 -0700 (PDT) From: David Griffith <dgriffi at cs.csubak.edu> Subject: dsdd floppies To: cctalk at classiccmp.org Message-ID: <Pine.GSO.4.55.0710272034030.10982 at helios.cs.csubak.edu> Content-Type: TEXT/PLAIN; charset=US-ASCII >Someone here posted about a friend in Canada who has boxes upon boxes of >unopened blank DSDD 5.25" floppies. Who was that? I think I deleted the >relevant emails (or at least grep is failing me). >-- >David Griffith >dgriffi at cs.csubak.edu ------------------ That might have been me, but he's also on this list; Golan, are you listening? m

17 years, 1 month

Cromemco System Three PerSci 8" Drive Problem ?

by Watzman＠neo.rr.com

Disk detection on the Persci 270 series drives (and I think on the 299 series drives as well) is simply a microswitch triggered by the leading edge of the diskette. There are NO electronics in the insert detection / clamp / eject mechanism. It is a trivial circuit consisting ONLY of a DC electric motor (24 volts, I think) and 4 microswitches (two of these are operated by cams on the motor shaft, one is the front panel eject switch and one is triggered by the diskette itself when it's pushed in). All you need to troubleshoot it is a multimeter. It has no connection to the actual "electronics" of the drive. It's just straight DC electricity. Schematics are available on the Harte site and in other places if you don't have the manuals. The only thing different about the CS3 implementation is that they removed the front bezel of the drives, and then replaced the eject switches that had been part of the drive's own front bezel (now removed) with a switch on the CS3 chassis. I don't remember if they connected this through the switch wires left over from the (removed) Persci front bezel or if they did eject through the 50-pin data interface connector (Persci did allow an eject function through the 50-pin data cable).

17 years, 1 month

Wanted: VAX Ultrix 3.0C

by sethm＠loomcom.com

Folks, I'm looking for VAX Ultrix 3.0C. TUHS doesn't seem to have it, nor does Bitsavers, but I'm hopeful someone on this list might have tape images they'd be willing to share. It used to be an extremely common VAX UNIX in the wild, so I'm hoping it still exists somewhere. -Seth

17 years, 1 month

Technical info on Amiga video port expansion devices wanted

by markk＠clara.co.uk

Hi, Over the Amiga's life, several devices were produced that connected to the 23-pin video port, and allowed more colours to be shown. I'm aware of at least five. Were any other video port devices produced? - HAM-E from Black Belt Systems - DCTV from Digital Creations (this also plugged into the parallel port and the hardware included a video digitiser) - ColorBurst from M.A.S.T. - Fun Color from Adept Development (saw this on amiga-hardware.com) - Graffiti from Individual Computers Technical info on the Graffiti is available from the Individual Computers web site, but I couldn't find detailed docs on any of the others. I would like to get hold of: - Technical details about how the hardware works for DCTV, Fun Color, ColorBurst and HAM-E. (I got a little info on the HAM-E from an old Usenet posting.) -Details of any chips inside any of the devices. or just high-res pictures of the circuit boards. - Any software that came with ColorBurst & Fun Color (DCTV & HAM-E software is available on the web, but other versions of those would be good to have too.) So if you have that or know where I might get it, please let me know. (The eventual aim is to allow Amiga emulators to support at least some of these devices.) -- M

17 years, 1 month

GAMMA-11

by aek＠bitsavers.org

> I was wondering if anyone on the list had one of these machines and knew > what parts made the hardware a Gamma-11, as well if anyone had manuals > online that they might share I have the manuals scanned, but they aren't on line yet, since it hasn't been a high-demand item.

17 years, 1 month

dsdd floppies

by dgriffi＠cs.csubak.edu

Someone here posted about a friend in Canada who has boxes upon boxes of unopened blank DSDD 5.25" floppies. Who was that? I think I deleted the relevant emails (or at least grep is failing me). -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

17 years, 1 month

Unix PC mouse

by dgriffi＠cs.csubak.edu

Someone some time ago said that he has some AT&T Unix PC mice. Who was that? I'd like one. -- David Griffith dgriffi at cs.csubak.edu

17 years, 1 month

IBM 9331 011 8" floppy pinouts?

by derschjo＠msu.edu

I have a nice, apparently functional external IBM 8" floppy drive, model 9331 011 that I'd like to hook up to a PC FDC. It has a 37-pin D-sub connector on the back. Searches for pinout info have returned nothing useful. Information about the 37-pin connector, or the pinouts of the drive inside the enclosure (a YE-Data YD-180 type 1601, which I've also not found any reliable info on) would be most appreciated. Thanks, Josh

17 years, 1 month

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test-drb October 2007