test-drb February 2018

test-drb@ccmp.vtda.org

160 participants
141 discussions

by cramcram＠gmail.com

The VCF picture album just posted has a shot of a PDP-8e system that looks like mine. Except that all 3 of my rack toppers are southwestern red/orange with no logo as opposed to the one on the right with the DEC, PDP-8e printing. Does anyone have a scan/stencil/etc. of that panel available? Thanks, Marc

6 years, 8 months

Restoring a VT50 (VT52 actually) .

by fritzm＠fritzm.org

On 12/26/2017 5:25 AM, Mattis Lind via cctalk wrote: > Since the terminal appears to work I also dumped the firmware out of the four bipolar PROMs. > > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/124A9.HEX > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/125A9.HEX > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/126A9.HEX > http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/127A9.HEX > > @Fritz: You don't need to get a dump of the PROMs in your terminal. I think the ones I have is in pretty good shape. Well, I finally got some time to play in the basement again this weekend, so I thought I'd have a go a freshening the PROM sockets on my VT52 to see if that makes it less flaky. Pulled the PROMs and gave them a read on my DATA I/O. The four I have are indeed bit-identical to the dumps posted by Mattis above, so I thought I'd note that here for completeness. cheers, --FritzM.

6 years, 8 months

Looking for info on some Olympia CP/M machines - ETX I, ETX II & EX 100

by robert626001＠gmail.com

This week, I scored four Olympia boxes - an ETX I, an ETX II and two EX 100s. Googling has not been very fruitful. I have established that the ETX II and the EX 100 are CP/M machines, SSDD 48 tpi 5.25" and DSDD 48 tpi 5.25" respectively and have seen one assertion that the ETX II is S-100 based - I won't be able to confirm that until I open it up. I found nothing on the ETX I. It doesn't seem to have a floppy drive, so may not be a CP/M box. I guess I'll have to power it on and see if it gives me a clue as to what's in the firmware. As best I can figure out, these were sold as add ons for electric typewriters. You hooked them up, with they typewriter acting as keyboard and printer and you had a word processor or computer. I think I have one interface board, that came in a box with the EX I. Does anybody know anything about these machines? It seems like a boot disk from an Osborne One would work. Most immediately, though, does anybody know which typewriters they worked with? I have an opportunity to go back to where I got them, today and it would be great if I didn't have to haul off every damn typewriter with "Olympia" on it! Thanks -- Robert

6 years, 8 months

RX02 problem

by useddec＠gmail.com

Hi Bill, If you have tried new media and the problem is on both drives, I have the M7744 and M7745 boards for $75 each and will throw in the cable between them. Shipping is $10 within the US. Thanks, Paul

6 years, 8 months

DEC Tape drive, controller, formater parts

by useddec＠gmail.com

Here is list of DEC tape related parts. Please contact me off list if you have any questions or wish to make any offers. One, all, or anywhere in between. Located in IL Thanks, Paul 3- M8901 3- M8901YA 6- M8901-YB 2- M8901-YC M8901-YD 2- M8902 M8902-YA 2- M8904 M8904-YA 3- M8905 M8905-YB 4- M8906 3- M8907 6- M8908 3- M8908-YA M8912 M8922 M8923 3- M8924 2- M8929 M8931 2- M8933 2- M8937 M8940 3- M8950 M8951 2- M8953 M8955 M8957 M8958 M8960 M8962 M8966 M8967 54-12262 54-12264

6 years, 8 months

Vaxstation 3100 of odd sort on epay

by jwsmail＠jwsss.com

This might be a tempest or shielded vaxstation? Anyone speculate or know for sure. The vendor may have these mixed in as equivalent to their other vaxstations. If you search for "DEC vax VS42A-BN" you end up back at the vendors listing for the ones with plastic covers. I didn't turn up any info yet, not hoping to. but the thing has what appears to be optical, and a huge connector which may be shielded SCSI on the back. I can't tell from the front, but there may be a hatch to allow it to be opened and a floppy inserted, not sure from the photos. VINTAGE-RARE-DEC-DIGITAL-VAXSTATION-3100-PF-VS42A-AA-RF-VS42A-BN-COMPUTER-SYSTEM/ http://www.ebay.com/itm/370930391341 Kind of an interesting device. I looped back into the vendors listings to this auction for the plastic topped version, by the way VINTAGE-DEC-DIGITAL-VT1300-VAXSTATION-VS42A-BB-COMPUTER-SYSTEM-VT-1300-TERMINAL/ http://www.ebay.com/itm/370912245260 It is badged VT-1300 so may not be a vaxstation. And the other box may be one of the VT-1300's that is tempest or shielded. thanks Jim

6 years, 8 months

ABLE Quiniverter, UNIMAP, boards, cables, user guide available

by useddec＠gmail.com

10412-0 2 plus 1 with cables and adapter board and cables 10067-0 2 10001000 has ECO's or modifications UNIMAP Users Guide 10143X07 possibly for use with 10164 and others Please contact me off list if you are interested in trading or wish to make an offer. Shipping is $10 within the for as many as you want. Please inquire about shipping outside the US. Thanks, Paul

6 years, 8 months

Looking for "MacScheme"

by web＠loomcom.com

I'm trying to track down "MacScheme", an implementation of the Scheme programming language for the Macintosh (68K). It's not even all that old, but it seems to have completely vanished off the face of the earth. It was published by Lightship Software in the early 1990s. I have found several editions of the user manual that came with a trial version of the software, but of course the original disks are missing. If anyone has a copy of MacScheme, could you please contact me? I'd like to preserve this title. Willing to buy the physical media if you're willing to sell it. -Seth -- Seth Morabito web at loomcom.com

6 years, 8 months

Large HP plotter on the curb in Arlington, MA

by phil＠ultimate.com

Spotted next to driveway of 7 Central St, Arlington MA Model C6075A. Attached sign says "needs new print head" https://h10057.www1.hp.com/ecomcat/hpcatalog/specs/provisioner/05/C6075A.htm is copyright 2006, so perhaps not "classic" and says: "HP Designjet 1055cm Printer" (tho 1055mm seems more likely to me) Tomorrow (13th) is trash day, current forecast is 0% chance of precipitation today and tomorrow. You'll need a van or a pickup truck, it's larger than I could drag home, and I've no place to put it.

6 years, 8 months

Anyone familiar with early television closed circuit system at used in conjunction with the SAGE System?!? Got a odd little group of USAF TV related papers etc... but some tagged SAGE.

by couryhouse＠aol.com

Anyone familiar?with early television closed circuit system at used in conjunction ?with ?the SAGE System?!? Got a ?odd ?little ?group?of ?USAF ?TV ?related papers ?etc... ?but ?some ?tagged ?SAGE... ? thanks in advance ?Ed# ?

6 years, 8 months

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test-drb February 2018