test-drb

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101090 discussions

by d.panicacci＠sbcglobal.net

Patrick, It was in the late 70's that I was a young technician on the test line at Century Data Systems in Anahiem CA, I remember when the Trident line first got started (T25, T50, T80) they were the latest in high technology, I was one of the first techs to work on them. These disk drives were built to last, I beleive I have some of the old "theory of operation manuals" for them. Thanks for the memories. Do you have a web page with pictures? I also worked on some of the first disk drives that Century Data made back then, I had 18 years in with them untill 1988 just befor they went bankrupt, at lest that is what we were told. Dave

17 years, 8 months

rt-11 v4 manuals - still want them?

by brad＠heeltoe.com

I finally (months, years) boxed up the rt-11 v4 manuals I have. If I remember correctly you said you wanted them. If you email me your shipping address I will ups them to you. -brad Brad Parker Heeltoe Consulting +1-781-483-3101 http://www.heeltoe.com

17 years, 8 months

VMS position in Massachusetts

by james＠jdfogg.com

A recruiter contacted me about a senior VMS (VAX, Alpha or Itanium) sysadmin position in Cambridge Massachusetts. This is for a permanent full-time position. The hiring company prefers deep experience (15 years), but is having trouble filling the position so my *guess* is that they are open to lesser experience. At this time, I do not know who the hiring company is. If anyone is interested in this job, drop me an email james at jdfogg.com.

17 years, 8 months

Classic computing jobs

by james＠jdfogg.com

Is it appropriate to mention jobs with classic computing environments here? I know of an opening.

17 years, 8 months

blog: Tektronix 4170 Local Graphics Processor

by legalize＠xmission.com

<http://blogs.xmission.com/legalize/2008/10/03/tektronix-4170-local-graphics…> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 8 months

help (re) booting xenix after cmos battery failure

by brad＠heeltoe.com

A friend of a friend has an old xenix machine; Compaq DeskPro 386 running Xenix. He shut if off after running for years and it won't boot because the cmos battery is dead. The disk is an ESDI drive attached to a Compaq ESDI/FLPY controller (copyright 1989) ISA bus card. He says can't see any way to enter a "setup" mode in the BIOS. Anyone know how to fix this? apparently it has his Alfa Romeo motor club data on it (so it's clearly +10yo :-) Anyone know if the xenix fs can be mounted on linux? (I doubt it, but I thought I'd ask) -brad

17 years, 8 months

Tandy 1000 SX Motherboard and Manuals

by matt.valerio＠gmail.com

Hey everyone, I have a Tandy 1000 SX that I'm looking to get rid of. Anybody want it? Here's the scoop. Tandy 1000 SX (circa 1984) - Motherboard, cards, and power supply (sorry, I don't have the case, long story) - Intel 8088 CPU dual-speed 7.16/4.77 MHz (switch on back), 640K RAM - VGA graphics card (high-density 15-pin DSUB connector) - 1 parallel port, 1 serial port, and a light pen port - 2 Joysticks - Keyboard (if I can find it) (large 6-pin DIN connector) - 2x 5.25" floppy drives (A: and B:) - ISA expansion card with a 20MB (I think) hard drive (C:) - MS-DOS 6.22 installed on the hard drive - Various 5.25" floppies\ Manuals - Technical Reference Manual, Boxed (25-1511) (Schematics, low-level I/O details, etc) - BASIC Reference Manual, Boxed (25-1502) - MS-DOS Reference Manual, Boxed (25-1501) - Tandy 1000 SX Quick Reference, Spiral Bound - BASIC: A Reference Guide, Spiral Bound - Tandy 1000 SX Programmer's Reference, Spiral Bound (Assembly language guide) - Turbo Pascal 3.0 and 4.0 reference manuals If you'd like it and are in the Columbus, OH area to pick it up, shoot me an email! Highest offer gets it :) -Matt

17 years, 8 months

Standing Request: Need Xerox 820 II

by snhirsch＠gmail.com

I have been on a quest to obtain one of these. If you have one for sale at non-bandit rates (see classcomputermuseum's auction for an example of the latter), or know of one, please advise! Thanks. (Have a real 820 motherboard and a Ferguson BigBoard already. I need the actual machine) STeve --

17 years, 8 months

HP 5036A microprocessor lab - searching for copy of "Practical Microprocessors"

by hpjimbondoris123＠dorisland.net

Phil: If you download the manual you will see that it is in color and was scanned at 300 dpi color. I believe that HP did this on purpose so that you could not copy it on a copy machine but rather contact them and purchase another copy. On the rom listing I had to even play with the contrast and brightness just to get it to be read. Please if you want take a crack in reducing the file. As I spent the entire day just on the 40 pages it was the best I could do to get out the document for those folks whom have the trainer without the manual when it came to the schematics those were scanned in black and white as they are black and white. Jim

17 years, 8 months

TU-58s (was Re: Some progress with my PDP-11/73 system)

by ajp166＠bellatlantic.net

> >Subject: TU-58s (was Re: Some progress with my PDP-11/73 system) > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Wed, 11 Apr 2007 21:54:24 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 4/11/07, Jerome H. Fine <jhfinedp3k at compsys.to> wrote: >> But I once had a project that >> used a real DEC TU-58. Not the fastest "random" >> access device!!!!!!!!!!!!!!!!!! > >They work better as "sequential" access devices - being long and thin >and travelling in one dimension, go figure. We used to optimize file >order on our console TU58s to speed up the boot times on our 11/725s >and 11/730s. Since the file order doesn't change, one just builds a >TU58 with EXCHANGE with each file following the other. The console's >8-bit-micro must cache the directory block, since the tape didn't whip >back to the start between each file. > >Using unaltered console tapes from DEC resulted in, IIRC, about 15 >minutes from turning the key to booting the hard disk. Replacing that >tape with one of our own devising shortened that pre-boot time to well >under 3 minutes. > >I'd hate to rely on a TU-58 and no other block-addressable media on a >PDP-11, though. I survived a PDP-8 with a TD8E and TU56, but it was >somewhat tedious (cool to watch, though). TU-58s weren't as cool, >IMHO. So happens one of my "small" pdp-11s uses a Tu58. the system is a BA-11V with an 11/23 256k of ram, DLV11J and MRV11 rom(boot). Takes 10 minutes to boot, setup VM: then copy key files to and reboot. After that it's pretty decent even if I have to access a file on tape. Everytime I runs it with a bunch of kids of the current PC generations they go gaga and comment on how slow then I explain the amount of ram and storage then they are amazed it can be a functional machine with so little. They can't imagine a useful machine with 32kW of ram and 256kb of storage. On the flip side I've used that same Tu58 to bring up iron that had no removable storage. It's slow but very dependable. Allison

17 years, 8 months

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