test-drb January 2005

test-drb@ccmp.vtda.org

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Relay computers

by brian＠quarterbyte.com

> Imagine implementing this trivial logic: > y1 = a & b; > y2 = a & c; one relay

19 years, 10 months

Apple, Commodore, CP/M, Sun, misc. gear needs new home

by dave04a＠dunfield.com

>>CP/M >> x1 Northstar S-100 CP/M chassis, expansion cards, floppies der Mouse then said: >The major problem is I'm in Canada - and that's the reason I'm writing >to the list: is there anyone who'd be willing to field the machine and >reship it to me in Montreal? Of course, I'd pay for the shipping >involved, and add in an amount (to be negotiated off-list) to Devin for >the machine. I would dearly love to get the NorthStar system (sentimental reasons)... I emailed the O.P. (I received the list from a friend a couple of days before it showed up on cctalk), to ask if I could talk him into shipping to Canada (I would of course pay costs), and did not receive a response - I did note that his posting to cctalk explicitaly stated that he might be willing to ship another item "within the US only" which suggests that he may have received and considered my request.... If anyone would be willing to help us poor Canucks retrieve some of this equipment, I would be interested in participating - I am located near Ottawa, which is close enough to der Mouse that I can visit him on a weekend ... If we can get the material to either of our locations, it would be greatly appreciated! ... Can anyone help? Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

19 years, 10 months

computer junks for shipping cost (mostly PC related)

by vax9000＠gmail.com

Well, I received Chad Fernandez' box of pc leftovers. After taking out what I need and adding in what I don't, here is the stuff that is free to go. (ship from ohio) http://geocities.com/mscpscsi/PHOTOS/dscn3959.jpg --pentium 133, IBM 6x86MX PR300 --IBM PCDOS7, windows 3.1, Caldera DRDOS 7.02 --around 15 pieces of HP DVD+R bland disks (my DVDRW has trouble to write this brand, thus distroyed 10 of the 25 pack, but your drive might not) --a point and shot APS camera ($3 from yardsale) --CNet 10M/100M hub (the small fan inside became noisy, you might replace it. looks like the CPU fans of the 486 era) --all kinds of fans, 6 of them (some look like NOS) --a pile of floppy cables --11Mbps wireless lan PCMCIA card --AUI to RJ45 converter (you need this for your vax) --a xilinx student edition of fundation 1.3 --PC bay covers, slot covers, drive rails. --an EPSON MX-100 III printer (I bought it with $3 to print the tango/protel DOS version schmatics) Let me know if you are interested. I am willing to break the pile into two. One is the printer, the other is the rest. I am also willing to trash the rails, slot covers, bay covers, floppy cables, the xilinx, to drop the weight. The rest must go as a whole. Thank you. I will use UPS ground or fedex ground. If no one takes them, their destination is miserable. vax, 9000

19 years, 10 months

Old Pertec drive on eBay

by ebay_jec1659az＠w3az.net

Greetings, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5158846219 Thanks to John Lawson, for pointing this item out. Is anyone else on the list interested in this? I have a Prime Computer inc. - Model 300 that has been out of service for lack of a reliable hard-disk, it looks like this drive will work nicely. I have contacted the seller about pickup/delivery issues. Thanks, James.

19 years, 10 months

Is this an 1802 development system?

by wmaddox＠pacbell.net

RCA-labelled microcomputer labelled "COSMAC" Screen and keyboard: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=5158915090… Dual floppy drives: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=5158914991… --Bill

19 years, 10 months

John McCance / DEC Collection

by hugh＠openbsd.org

Dear vax enthusiasts, Some time ago John McCance donated a delqa card to me, and I responded with a thank you letter. Sadly, last week I received an email from John's sister, to inform me that John had died of a heart attack while helping his landlady deal with a basement flooded by the remains of Hurricane Charlie. She'd found my letter while going through his things. As John was an occasional participant on these lists I felt you should be informed of his passing, but there is a second reason for this posting. His family isn't sure how to handle the disposition of his collection of older computer hardware and documentation. >From the inventory they've compiled there appear to be several each of vt320 and vt420s, a large number of keyboards, a vax 4000 300, a vaxstation 4000, a strongbox of vms licenses, and many manuals, cdroms, etc. I also understand from my correspondence with John that there is a qbus scsi card of some sort, but this isn't a treasure hunt. The family would like to put any money the collection is worth towards his final expenses, or at least save hardware that John cared about from the dump. I am in Vancouver, but if one or more of you is near Cambridge, Ohio, and can commit to taking the bulk of the collection, you may contact me to work out specifics and put you in touch with the family. /Hugh

19 years, 10 months

UTek (V) filesystems and boot blocks

by julesrichardsonuk＠yahoo.co.uk

Does anyone happen to know if UTek V's filesystem was compatible with anybody else's (hint: one that I might have a chance of reading with Linux, which probably limits me to sysv to be honest) Also does anyone happen to know the partition table / boot block layout? I'm not quite sure when UTek V sprang into being, but maybe it uses the same filesystem and boot block as earlier versions of UTek (which some of you are likely to have running on various Tek equipment) I'm going to try powering up my Tek XD88 tomorrow (it's currently warming up having been stored in the loft) and I'll take another disk image from the hard drive then - it'd be quite nice if I could mount the image from within Linux to have a proper look around the disk though (I recall Tek's shell being a little on the strange side) cheers Jules

19 years, 10 months

Back on the list, with a request for help

by william.layer＠comcast.net

Hellos, I was on this list in the later 90's, but had since lost my link. Good to see you all, and hello to the new(er) folks. I'm trying to repair an Altair 8800 that came to me in 'kit form'. I'm missing the original 256 Byte memory board, and several chips have been robbed from the chassis, including the 8080 CPU. This repair will take a while, but I have two main concerns: 1) The control & display board has some missing chips and evidence of a burn-out in the far lower left corner. I'd like to know if there is a way to test the board for function prior to installation, as the installation includes some 70 or so wires. I'd rather not install this board only to learn that there was damage to the logic, that I failed to notice & repair. Also, can anyone supply me with an original Altair 256Byte memory board? 2) I need an 8080 CPU for this machine; can someone supply me with one? Would be cool to have the original style ceramic/gold chip, but anything that will actually work is good. Is it possible to drop an 8080A into the Altair CPU board and remain compatible to the original 8080? I have an 8080A in an unused box. I have good material to trade for these items, if available; let me know what you need / want. If you have any information, please send it to the list. Thanks, Bill

19 years, 10 months

HP 21MX E-series front panel keyboards

by peterbrown10＠hotmail.com

Thanks Glen, Jay and Bob, I think that I now understand what's going on. The system that the keyboard comes from is an E series machine but all of the cards have been removed - it is quite possible that it at some time had additional booster microcode boards so that would expain the extra front panel cable. What sort of microcode board would require direct access to the keyboard? Bob - thanks for the kind offer of the 2113 chassis. I currently have a couple of full size 2113's in almost working condition (thanks for your continuing help on that one) my hope was that I could get a smaller system working as well - hence the need for the short keyboard. Glen - the document that you linked shows the problem quite well. What I need is the PCA 5060-8343 what I have is PCA 5061-1343. The metal work changes to convert a long front panel to a short one look to be fairly minimal and are probably within my capability (injury estimate: 2 bruised knuckles, a gash and some sort of deep graze) I note from the circuit diagrams that the keyboards are basically the same with the larger PCA having some addtional bi-directional buffering to drive the additional keyboard outputs. I thought that I might be able to saw down the keyboard PCA and discard the extra buffering bits but they seem fairly well integrated into the rest of the PCA. Does anyone have a spare 5060-8343 that they might be convinced to part with? or failing that a whole front panel assembly for a 2105? Thanks to all Peter Brown

19 years, 10 months

More auction goodies

by tponsford＠theriver.com

Hi Folks, Well, today's auction haul includes: A Dec MV 3800 w/qbus scsi card (he-he) An Alpha 1000 And!! A functioning Tektronix 4051 Graphics system w/Data Communication Interface. (circa 1976) it also came with the RS232 Printer interface and the following documentation: 4051 Graphic Systems Operation Manual Plot 50 Introduction to Programming in Basic 4051 Graphic System Reference Reference Guide to 4051 Basic 4050 Series Basic Reference Guide amd 4051 Option 10 RS232 Printer Interface guide More information on this system can be found here: http://www.atariarchives.org/bcc2/showpage.php?page=282 What is really wierd is that I wrote some programs in Basic for this machine in 1977 using some of the built-in vector graphics routines, when I worked at the Defense Mapping Agency, now called the National GeoSpatial Intelligence Agency. I still have the tape cartridge (200K !!) when I loaded the tape... presto... instant retro memories. I even wrote some notes to myself!! ( Note to Homeland Security and to anyone else reading this email..It was NOT classified!!) Cheers Tom -- --- Please do not read this sig. If you have read this far, please unread back to the beginning.

19 years, 10 months

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test-drb January 2005