test-drb May 2008

test-drb@ccmp.vtda.org

199 participants
350 discussions

Wanted: Atari 800 Corvus interface + software

by snhirsch＠gmail.com

All, I'm interested in getting my hands on the subject hardware and software. I have some very rare and interesting Corvus items to offer in trade. Not into Corvus? I also have an extensive collection of Apple 2 software and hardware. If you can help, or know who can, please contact me privately. TIA, Steve --

16 years, 1 month

What's about Mike Umbricht h316 web page ?

by spedraja＠gmail.com

The subject of the message is explicit, I think. Someone knows if it's active or accesible yet ? Greetings Sergio

16 years, 1 month

Osbourne OCC1 problem

by javickers＠solutionengineers.com

Hi folks, I just dug my old Osborne OCC1 (1st model, in the beige vacuum-formed ABS case), only to find all is not well. Actually, "finding" all is not well is a bit of a white lie - I already knew it was in trouble, from when I last tried to boot it about 2 years ago... Unfortunately, the intervening 2 years have failed to fix the problem, which is that the video seems to have no horizontal hold. It took a few goes, but eventually it booted from a CP/M disk; with scrambled video. The links below are to a picture & two versions of the same video (16 seconds of special-effects laden trickery...): PIC: The startup screen in scrambled fashion: http://www.solutionengineer.com/ozzie/occ1_prb.jpg VID: Booting to CP/M: MOV format (4mb): http://www.solutionengineer.com/ozzie/occ1_prb.mov MPEG2 format (9mb): http://www.solutionengineer.com/ozzie/occ1_prb.mpg Please excuse the camera wobble on the movie... The constant high-pitch whine is, I think, the image stabiliser in my camera working away. Now.... If I pull the termination block off the External Video connector, the screen goes out (as one would expect); push it back on & the screen comes back on with the display as steady as a rock -- unfortunately, it's crashed the computer... From this, I deduce that it must be something in the mainboard electronics that's failed (a cap, maybe?), rather than something in the monitor unit. Any ideas where to start looking? I have an oscilloscope (albeit I've forgotten how to use it, and am not 100% sure where the probes are), and a multimeter... beyond that, not a lot. I've tried cleaning the contacts to the monitor, and around the Ext Vid. termination block; and I've wiggled the three cable connectors to the mainboard a few times to clean them up. I've also popped each of the three socketed chips in & out a couple of time to clean the legs up. Finally, I soldered the contrast knob back together - one of the legs had broken. Basically, everything works except for the shaky video. Sometimes you see a whole page full of 1s, or 0s; essentially, it's all a bit random. Bad connection somewhere, perhaps, or maybe a failing chip? Cheers! Ade. No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.16/1431 - Release Date: 13/05/2008 19:55

16 years, 1 month

Capacitor values for original PET power supply?

by dm561＠torfree.net

----------Original Message: Date: Tue, 20 May 2008 10:28:11 -0600 From: Richard <legalize at xmission.com> Subject: Re: Capacitor values for original PET power supply? In article <20080520111556.GD1028 at usap.gov>, Ethan Dicks <ethan.dicks at usap.gov> writes: > The memory board looks interesting - any idea what was meant to go > in the cartridge slots? I wonder if it isn't a memory board scavenged out of some other piece of hardware and simply hacked to appear as more memory in the PET? -- ----------Reply: I think if that were the case, the interface to the PET expansion connector would be a lot messier than what looks like a straight-across ribbon cable with just a transition board to connect to the old-style edge connector, so it does look like it's specifically for the PET, presumably with optional different transition boards for the different PET connectors. An interesting board indeed; what could those slots be for? I don't think C64 carts would work very well in a PET... m

16 years, 1 month

Possible rescue - Cambridge, UK, early next week

by mross666＠hotmail.com

That part of the Corestore collection which remains in the UK is finally moving! Most will be put in a shipping container and taken to the USA, some will be remaining in the UK at a different location. But there may not be room for everything, so some items may need rescuing. The first item on the list for probable disposal is the Convex C220 supercomputer... I rescued it myself around 12 years ago, it's been untouched since then: http://www.corestore.org/convex.htm Complete, with manuals and software. If I'm honest I'm probably not going to have time or, especially, space for it, so first offer of a good home takes it. If no offers are received, it may sadly end up scrapped. If the will is there but time is a problem it can probably remain in Cambridge for a couple of weeks. RSVP by email, ASAP. Thanks! Mike http://www.corestore.org _________________________________________________________________ Keep your kids safer online with Windows Live Family Safety. http://www.windowslive.com/family_safety/overview.html?ocid=TXT_TAGLM_WL_Re…

16 years, 1 month

Altos III terminal and more available, free stuff in Renton, WA

by Saquinn624＠aol.com

If anyone's interested I have an Altos-III terminal with keyboard (slightly yellowed) and manual available. There's a fault in the PSU and it isn't bringing up the logic board power properly, and so far I haven't gotten around to messing with it. Free pickup as-is, Renton, WA. If you have something to trade you'd probably be able to persuade me to make fixing it a priority. Also I have a Diablo 620 daisy-wheel printer with multiple print wheels, spare ribbons, and manual. works, best offer accepted. Also in the free pile: HP AdvanceStack "Switching Hub" for 10BaseT (it's a hub, not a switch). Includes management module Cartridge for Canon LBP-SX printer engine (LaserJet II/many LaserWriter IIs), also a used-working fuser assembly for the SX engine Sun Type-4 keyboards (no cables) SBUS parallel cards CG6's a XENIX-compatible Pentium-233 machine (used to run XENIX at a dental office) a Sun Aurora-II chassis and PSU - put a fast 1/2 height CD-ROM in your SPARCstation! Xyplex MAXserver terminal server cards and baa-daa-bum a Xyplex X-25 bridge card! Infuriate yourself or buy for your closest enemies! Can even supply a MX3k or MX5k chassis for the above 2 things if you want. Sun 3/200 boardset (CPU and RAM, 24 or 32MB worth). Needs chassis and a PROM chip. Sun 501-1153 VME -> IPI-2 Sun VME "SCSI-II" (not that SCSI-II, it's SCSI-I) card in either a X/X60 carrier (no external port) or a carrier with an external DD50 SCSI-port. Sun Xylogics-450 Multibus SMD controller in a Sun VTM adaptor. Can be removed >from the VTM as well. AT-101 keyboards, many of them. Possibly a RS/6000 3CT as well. It has GXT150M graphics, sound. ************** Get trade secrets for amazing burgers. Watch "Cooking with Tyler Florence" on AOL Food. (http://food.aol.com/tyler-florence?video=4& ?NCID=aolfod00030000000002)

16 years, 1 month

buying an oscilloscope

by dgriffi＠cs.csubak.edu

Does anyone here have any pointers on getting a decent used oscilloscope? The intended use is for fiddling with classic computers and assorted homebrewed projects (like synthesizers and geiger counters) -- 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?

16 years, 1 month

PAGING: der Mouse

by chd_1＠nktelco.net

The email address that I have for you doesn't seem to be working. Please contact me directly if you would. -chuck

16 years, 1 month

Possible rescue - Cambridge, UK, early next week

by dgriffi＠cs.csubak.edu

On Wed, 21 May 2008, Robert Jarratt wrote: > Have you tried contacting the BCS Computer Conservation Society? I have > forwarded your email to them just in case. I forget if it's been mentioned here, but Slashdot had a story a few days ago about how Bletchley Park was having money troubles and is danger of closing... -- 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?

16 years, 1 month

cctalk Digest, Vol 57, Issue 40

by dm561＠torfree.net

-----------Original Message: Date: Wed, 21 May 2008 12:42:58 +0000 From: Ethan Dicks <ethan.dicks at usap.gov> Subject: Re: Capacitor values for original PET power supply? <snip> Between subroutines past $9800, and some tables referenced earlier, and a complete lack of a reasonable end of the code, I'd say that's only the half of it. It was common to stuff code in 2K or 4K chunks between $9000 and $BFFF... the hex files, though, seem to only describe 2K chunks. Are your ROMs all 2K and some haven't been copied yet? -ethan -----------------------Reply: Looks like there are only three, but it might be interesting to know what the other labels say (and confirm the EPROM sizes). Computhink also made other add-ons, including a disk drive IIRC, so those PCB slots are probably for things like the disk interface, etc. You might be able to track down someone through old archives who has (had) the manual for it. m m

16 years, 1 month

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test-drb May 2008