test-drb May 2015

test-drb@ccmp.vtda.org

199 participants
259 discussions

hp 1820-7730 datasheet? HP-PB J2146A LAN interface, SOT23 part missing

by Arno_1983＠gmx.de

Hello Folks, with a bunch of HP 9000 equipment, I received a HP-PB "802.3 10Mbps LAN" card that was missing the 10base2 BNC connector and the SOT23 SMD part directly behind it. No idea why and by whom they were removed. A BNC socket was easily found in one of my parts bins, but what about the SMD component? My first idea was this might just be some sort of transient protection device (I've seen a really old ISA NIC fitted with a neon bulb next to the BNC for that purpose!) but there probably is a bit more to it, as pin 1 connects to BNC Center and to pin 7 on the PHY (U18, NatSemi SS9130AP also HP house-marked as 1820-7730), pin 2 is BNC shield/ground *and pin 3 goes to pin 5 on the PHY*. Unfortunately I was not able to find a datasheet for the PHY that would probably give an example circuit - can anyone please either point me to that or, if they have an example of that card available, look up the marking of that SOT23 device for me? Card would be for my HP9000-K100 PA-RISC, for which I'm also looking for one of the graphic options. One keeps popping up in the US 'bay but the (commercial) seller wants real money for it - add S&H to old europe and it's waaay out of my confortable range. Thanks in advance, Arno

8 years, 12 months

Reading/Verifying the Intel 8041A

by mainpatents＠gmail.com

The Intel AFN-00188B Datasheets for 8041A/8741A specify that EA max is 24.5V. The verify mode for "PROM/ROM" holds EA high at 23V. The 8048/8748 Datasheets say EA is 32V for 8748 Verify but need only be +12V for 8048. Richard

8 years, 12 months

New PDP 11/44 pics, interior card cage

by billdeg＠buzz1.com

I mentioned earlier I had an ebay auction running for an 11/44 and there were questions about the interior card cage. I uploaded new pics. Here is what I could discern from the photos I took of the interior card cage's cards M7856 M7819 M7814 M7258 M7258 M7258 M7297 / M7298 M9202 M7295 ?? ?? M7819 When I posted the original listing I assumed incorrectly that all of the computer cards were in the 11/44 and the internal cage was for the few backup tape drive interface connectors. Apparently I was way off. The new pics help explain what the 11/44 was doing before being taken out of service.. Ebay: 271869650084 (ends later today) new pics: vintagecomputer.net/digital/PDP11-44_2nd/

8 years, 12 months

More stuff that can't be shipped

by jnc＠mercury.lcs.mit.edu

> From: Cindy Croxton > Piles of OLD DEC stuff Like what? Like most people on this list, I'm far enough away that I can't just drive over (especially on such little notice), but if there's something good there, perhaps a local DEC collector can help, or I could pay someone to go get it. But without having _some_ idea what's there.... Any cables? (Those seem to usually be in short supply.) Any chance of some pictures, if you have no idea what's what? Noel

8 years, 12 months

More stuff that can't be shipped

by sales＠elecplus.com

Couple of Kaypro ( and 2 and a II) Several old 80386? Compaq luggables A supersonic testing machine of some sort A Sperry mainframe? Size of washing machine A plotter with only 10 hours on it A DG Pent Pro server An OLD HP emulator with LOTS of thick SCSI type cables Piles of OLD DEC stuff Plotters, HP, new in box, 6 or 8 pens, I forget which, IBM badged Lots of other old things, like the computers and terminals in the Halt TV show NIB but very old network stuff No way to ship, someone please bring wallet and truck/trailer J Must be gone by Monday. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-792-3400 phone sales at elecplus.com AOL IM elcpls

8 years, 12 months

the 2 old original IBM machines

by sales＠elecplus.com

8088 computers, one has 2 floppies, 1 has 1 floppy and 1 hdd. Both fully tested and functional. No keyboards now, but there is an original IBM mono monitor, and the printer. I do NOT want to ship; these will not survive UPS very well. We are about 1 hour from San Antonio. Make a good offer, take them home. Lots of software to go with these. Must be gone before Monday. I will be at the warehouse all weekend. Also 2 NIB 14" amber VGA monitors. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-792-3400 phone sales at elecplus.com AOL IM elcpls

8 years, 12 months

An 80286 motherboard, NIB

by sales＠elecplus.com

Found another goodie, saved from the scrapper. VLSI high performance Baby AT Turbo mainboard 12 MHZ Zero-Wait Up to 4MB DRAM 6x16-bit and 2x8-bit ISA slots Will require a separate hard/floppy controller, video card, memory, CPU, and 80287 if you want one. Supports 360kb, 1.2MB, 720KB, and 1.44MB floppies Includes manual. Note: this motherboard does NOT have slots for 30-pin or 72-pin memory. They all need to be socketed chips, which I do NOT have. Make an offer, take it home! I also have new hard/floppies controllers, still in the box. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-792-3400 phone sales at elecplus.com AOL IM elcpls

8 years, 12 months

Interactive Baseball/Don Daglow

by cclist＠sydex.com

WikiP under the "PDP-10" subject claims that Don Daglow wrote the first computer baseball game in 1971. I don't think that this is accurate; do any old CDC-ers out there remember the BAT PP program on every CE's MACE deadstart tape? I believe that it preceded Daglow's game by a couple of years. I know this may chafe some of the DECfans out there, but I think the claim is simply not accurate. --Chuck

8 years, 12 months

Memory options for an HP 1000 (HP 21MX / 2112A)

by marc.verdiell＠gmail.com

Thanks, very useful info, and the manual is indeed what I was missing. But now where to find the DMS, with two cards in particular, that's not going easy to find both that match... >> ...the recently posted IO manual says it can support ... up to >> 1.28M. >From: "J. David Bryan" <jdbryan at acm.org> >That's correct, although the machine must be equipped with the Dynamic >Mapping System (DMS) in order to access more than 32KW. For the 2112, DMS >is product number 12976A. It consists of a card (the HP 12731A Memory >Expansion Module) that plugs into slot 112 in the front card cage) and >another card that contains microcode that implements the DMS instructions; >the latter mounts to the main CPU board at the bottom of the chassis... >The "Standard Performance Memory >Systems Installation and Service Manual" (5955-4310 April 1979) details the >requirements; it's available from Bitsavers in the "1000" subdirectory. > -- Dave

8 years, 12 months

Proud owner of a SDK-86, now what

by orgwood＠iaxs.net

I was an Intel salesman and have this board...I have lots of docs, serial monitor, chess PROMs but no keyboard monitors. Do you have the BIN files for them to fit in 2716s? I can scan, copy eproms, anything to help you if you can help me. Thanks, Dave http://www.classiccmp.org/pipermail/cctalk/2015-January/002410.html http://www.mirrorservice.org/sites/www.bitsavers.org/bits/ http://www.intel-vintage.info/apps/blog/ Original Woodworks 4631 Lake Ave., White Bear Lake, MN 55110 By appointment only! (651) 429-2222 www.originalwoodworks.com orgwood at iaxs.net --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com

8 years, 12 months

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test-drb May 2015