Hi, My name is Bob Shannon, and I've been collecting and restoring old computers for quite a while now, and I have a rather varied accumulation of interesting machines. Some of my favorites are HP minicomputers from the 1960's, I've got the full set, a 2114A, 2115A, and a 2116C. I've also accumulated spare parts and many peripherals. Ever seen a 7.5 inch hard-sectored dual floppy disk drive for HP minis? In addition to the HP collection I've got some PDP's (11/35, 11/34A, VT-11 display, etc). Of course there is an assortement of peripherals for the DEC systems, including an original unibus Link-tape drive, RL-01's, a Megatek vector graphics system, etc. Any DEC vector graphics fans out there itching to get their hands on a VT-11, display and light pen? Maybe I should install that into the 11/35, and make a space war machine? For the more exotic stuff, I have an original MIT CADR lisp machine complete with the Trident T-300 drive. Saddly my disk pack is no longer bootable...not likley I'll ever get a bootable disk for that baby. If anyone ever wants to restore a MIT CADR, I've got the only remaining supply of tested spare parts (LMI CADR spare parts technically). There are a few micro's in my accumulation as well, an old IMSAI, an ELF-II, etc. I tend to get a parts machine or two for most of my collection, and I'm willing to trade and swap parts, etc. (I once had a nice collection of Nova's, but traded them all away...) Lastly I have a collection of old software for some of the machines (HP's mainly). I have also designed a photo-tape reader emulator that loads paper tape binary images By the way, if anyone has a DOS or Windows cross assembler for the HP machines, I'd love to get a copy! I still use a custom control system based on a HP2117E, binary compatible with the classic systems. I have seen the C source code for a cross assembler on the HP2100 archive site, but not being a C programmer I've not gotten it to compile so far. I've just read about VCF East, I'm not sure I can get things ready to exhibit this year, but I will attend for sure. Perhaps I can at least show up with some of the micros...maybe the HP2114, as that can fit in my jeep.

For those interested in a cross assemlber for theHP mini's... I found C source code for a HP 2100 cross assemlber on the HP2100 archive site (which seems to be down today). Not being a C person (that is, not able to read C, much less code in it), I handed a copy over to a friend who tinkers with C a little. He managed to convert the original source into something that would compile on what he described as an obsolete C compiler (Borland?). The resulting DOS code bascially seems to work, with one known bug so far. In the hpasm.lst output file, and instruction that have bit 15 set are listed incorrectly. For example, 102315 will appear as 3777770215. A simple search and replace operation on the listing file corrects this problem. I have not fully verified the binary output, but it appears to be a block-loader compatible tape image. If anyone is interested, I can email them the original C source from the 2100 archive, the modified .ccp file that compiled, and the resulting .exe file. I have scuessfully assembled small programs (blinking lights code of course) with this xasm that matches the ancient hand-written code taped to the inside of the front panel, so its a start anyway.

At 12:09 AM 6/1/01 -0700, you wrote: ^^^^^^^^^ nice. I have one, but I would like more. The A2094 are nice too, but fixed freq. and heavy; they have trinitron tubes. However, I think that what you are describing as "HP735/50" are actually "715/50"; the 735 came in 99 and 125MHz varieties only. Still, the 715's are ok. carlos. -------------------------------------------------------------- Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org

At 03:16 PM 6/1/01 -0700, you wrote: Probably HPUX 9.08; if there ever was 3.08 that would have been ancient and certainly not for PA RISC. Now, the 725's have PARISC 7000 cpus; they won't be supported by the PA-RISC Linux port when it is available. But they will run HPUX 9 - 10.2. The 715's are actually newer, and they should run HPUX 9-11 and Linux; I think they are PA-RISC 7200? The 735/99 is PA-RISC 7100 (the minimum for Linux) and the 735/125 is PA-RISC 7150 . This is from memory so I could be wrong. Oh, and before I forget: there is NextStep for these machines as well. They are all good machines in any event. If you ever come across a 735/125 (or 99) grab them; they have stereo audio and are twice as fast. carlos. -------------------------------------------------------------- Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org

Didn't get anything from anywhere on my extended Memorial Day vacation to Washington D.C. (Mostly running through museums) But I highly reccomend it to anyone interested in historical computing devices. The main Smithsonian museums I went to were the American History Museum and the Air and Space museum. Both had special exhibits on information processing, and among the highlights are: American History Museum "The History of Information Processing" - An old mechanical logarithm calculator the size of a prone refrigerator - Two original German Enigma machines, the three-rotor and four-rotor models. These were AWESOME, and all the true hax0rs stood around them in awe. - The accumulators, main control pannel, power supplies and I/O tube grid - A UNIVAC control unit. - The MANIAC main processor unit (HUGE box) - A Bendix mainframe, tape drive, and typewriter terminal - An old tube-based IBM mainframe with drum hard drive - An IBM/360 control unit. - A DEC PDP/8 with transparent card cage - A DEC PDP/15, the first computer used for fingerprint analysis by the FBI - A Xerox Altos, the machine Jobs & Woz "Borrowed" From, with a strange image screen-burned into the monitor. - Bugs taken from the DNC offices in the Watergate Building (Removed for "Further Study" :) -Various TI and HP calculators, 60's to 70's vintage, and a Pulsar watch (The first digital watch) - An Altair 8800, the original Apple I prototype model, and a Sol computer - A TRS-80 I, an IBM PC, Commodore 64 (Late vintage it looks) a Sun-I Workstation, and a Mac, all propped up on stacks of old Byte, Computerworld, and Misc. other magazines - Various other nick-nacks, like an original Mac system disk and brochure (If you can point, you can use a Mac) A HomeBrew Computer Club sweatshirt on a mannequin that a French couple mistook for Steve Jobs (I'm pretty sure he isn't, and has never been, of Asian descent. :) The camera used to broadcast the first televised Presidential debate, bunches of other stuff I've forgotten.. Air and Space Museum "Computers and Flight" -A Cray 1, S/N 0014. Installed at the Goddard space center, I belive. -Processor modules from an old model space shuttle (Can you say - over-engineering?) -Processor modules from the Iridium (defunct) system -A MicroVAX II (I have one! Horray!) -The slide rule Goddard used (Really classic computing :) -An ANCIENT IBM mini that I couldn't recognize. It's panels were off. - The last remaining piece of Sputnik; the pin used to keep the battery contacts of the transmitter open, pulled just before launch to activate the transmitter. Also, if you drive out to Rockville, a suburb of D.C., you can drive through this technology park and see Celera and the Human Genome Project, both within a mile of each other..

My comments below. Jason McBrien wrote: Short Wozniack video describing mircos, etc. Also, a display of early microprocessors, including the 4004, 8008, 8080, 6800. At least these were there 2 years ago when I went. Which building at Goddard? Cripes I work there and am unaware of a Cray in my workplace backyard! Speaking of Goddard (GSFC), they have auctions and so called fixed-price sales on a regular basis. I have a basement full of their stuff. Over half of my collection has been purchased from GSFC auctions. I'm sure I could break some hearts here describing some of the stuff that went under the hammer and what prices they fetched. Seen many a mainframe go to the scarp yard. The worst case was an old SEL/Gould/Encore 32/77 that I recognized as a system that I worked on for years. Please could you specify where in Rockville is the technology park? These would be excellent half day trips for me and my family. Eric P.S. I bought my SWTPC 6800 in Rockville, MD in 1976.

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