test-drb July 2006

test-drb@ccmp.vtda.org

204 participants
377 discussions

by compoobah＠valleyimplants.com

I know this is a long shot, but does anyone know if the DEC VSXXX mouse (VAXstation/early AXP) signaling protocol is shared by anything else (Sun mice, for instance). I've got the LKA, so all I need is a mouse substitute.

18 years, 5 months

ADM-3A+ Someone looking for one?

by jcwren＠jcwren.com

I see to recall that someone was looking for an ADM-3A a short time ago. I have an ADM-3A+ that is clean, except for a crack in the top casing just to the left of the keyboard. Video is bright and pretty crisp. I also have a ADM-5 logic board, condition unknown. If whomever it was is still looking for a ADM-3A, and a plus model is acceptable, please contact me off-list at jcwren at jcwren.com --jc

18 years, 5 months

CMB PET 2001 restoration tips?

by julesrichardsonuk＠yahoo.co.uk

Just in case there are any! I picked up our first blue-faced PET 2001 last night (we've got a couple of the black-faced ones already), but it's cosmetically in a bit of a state after living in someone's garage for years. I know almost nothing about these machines - are there any particular gotchas about restoring them (like, "don't touch this bit as all the paint will fall off") other than the usual stuff that applies to bringing up a new toy for the first time? The logic board *looks* healthy enough - it seems to have escaped the corrosion that's got bits of the case. Isn't there a particular chip (or several) that's prone to dying in PETs though? Remains to be seen if it'll power up. What's software availability like? Any archives of tape data on the 'net anywhere? (Diags would be great, games would be fun later on :-) cheers Jules -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.

18 years, 5 months

Pinouts for a Nanao CRT model MG-550CDM?

by ethan.dicks＠gmail.com

I have a small (5"?) panel-mount CRT here I'm trying to fire up. The label on the top suggests that it's made by Nanao and is a model MG-550CDM. Google turned up a hit or two, but no real information. The PCB has a 10-pin single-sided edge-connector, visually similar to the style Commodore used on PETs and C-64s. There are two connectors on the back of the chassis - an RCA, clearly NTSC video in, and a 2x3 molex connector, obviously power and perhaps some additional control. This came out of some piece of radio comms gear, if that helps place its context. >From what I can tell from cursory inspection, pins 1 and 10 are ground, 5 and 9 appear to be no connect, 8 is NTSC in, 7 seems to be AC in (can't identify AC return...), and 2, 3, 4, and 6 disappear into the bowels of the circuitry. If I'm lucky, there is some sort of industry convention in play here. Does this arrangement ring any bells with anyone? Thanks, -ethan

18 years, 5 months

VCF/Midwest - Stuff I am bringing

by Mzthompson＠aol.com

Here's a partial list of stuff I am bringing to VCF/Midwest. A pair of NeXT Turbo Slabs (consecutive serial numbers) complete with monitors, printers, kybds, mice, cables, documentation and OS CDROM. Also some spare NeXT keyboards, mice, cables and some unopened software. IBM 5150, 5160, and an AT; a couple SGI boxes; an IBM RS6000 (/250 I think); and a Tandy 1000. If still room in the car then some DECstations and associated stuff. Mike Thompson

18 years, 5 months

Fans in VAXstation 4000/vlc

by healyzh＠aracnet.com

Does anyone have any experience in replacing the fans in a VAXstation 4000/vlc? I think the bearings in my system are going out. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

18 years, 5 months

Documentation for HP Nighthawk 20mb drive

by bob＠jfcl.com

>drive and/or the 9153 on hpmuseum.net, Bingo, that's the one. I have the 9153C, which is one of these funky drives inside an enclosure with a GPIB interface. It looks like at least some of the documentation has been restored to hpmuseum.net. To make the story short, my drive is dead and replacement drives seem to go for absolutely amazing amounts of money, so I was toying with the idea of hacking up some kind of replacement for it. The next question is, what's the "SS/80 Command Set" ? Thanks, Bob

18 years, 5 months

VCF/Midwest Final Announcement -- this coming saturday

by pat＠computer-refuge.org

As it happens, we now have a speaker for VCF/Midwest. Jack Rubin is going to talk about his 50 years of computing experience in a talk titled "Still an enduser after all these years." So please join us for that this Saturday, at 12pm. Maps, directions, etc. are available from the website at: http://www.vintage.org/2006/midwest/ Note that the times listed there are wrong; the event will start at 12pm with Jack's talk, and the exhibits and marketplace will be open from 1pm until 6pm. Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 5 months

The Internal HSD05-AA is working

by compoobah＠valleyimplants.com

The sleds I used were cut from sheets of plexiglas to fit snugly in the rails. I drilled 4 holes through the bottom to support a 3.5" ff drive. Tempered Masonite hardboard could also be used, and then you wouldn't have to have static buildup precautions. Metal sheets with retention brackets would be nicer, but I was going for quick and cheap (materials on-hand) With 1" drives, you can mount 2 in each BA4x0 drive bay, one per "sled" per guide. As before, I don't know how much power can be safely taken of of one drive sled connector, but I have the TK70, HSD05 and one 1/3 ht Seagate Barracuda 4GB drive working off of one sled with no trouble (haven't actually used the TK70 yet, no tapes, but it's plugged in and everything seems cool).

18 years, 5 months

troubleshooting video

by compoobah＠valleyimplants.com

I have an IRIS that I've been working on off-and-on for a while. I'm currently looking into the graphics circuitry. For a while, when I had it connected to the SGI monitor it displayed a garbled version of what I assume was the PROM monitor (pixels/lines were skewed across the screen back-and-forth). I assumed that it was a video mode problem, checked the switches, and put it back on - nothing. Then I tried a Sun multisync, and it switched into its "I don't know what to make of this input signal" flashing-light mode. Checked switches again, tried with BPRN and BPRO jumpers in, tried again with BPRN/BPRO back out. Put the scope on the IRIS sync output, compared it with a Sun 3/110 CG4 output. (thought it might be a sync issue) The most common regular waveform (I assume it's HSYNC) is ~28KHz on the IRIS and 61.72 KHz on the Sun (measured with the DSO's cursor function - digital scopes are trancendentally cool!) The Sun's sync is similar to published for 1152x900, the SGIs is not quite what was expected for "Mode 1" on the IP2 (for either primary monitor or secondary monitor back-panel setting) Primary is supposed to be 60Hz non-interlaced, secondary should be 33Hz interlaced (no HSYNC given)

18 years, 5 months

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test-drb July 2006