test-drb March 2003

test-drb@ccmp.vtda.org

314 participants
633 discussions

Free Computers in St. Louis: PCjr, Apple IIGS and more

by bkotaska＠earthlink.net

I live nearby and may be interested in some of these free goodies if they are still around. I just joined the group so can you contact me? Thanks. Bill Subject: Free Computers in St. Louis: PCjr, Apple IIGS and more I've finally come to realization that I do not need 2 (or more) of every computer I can latch on to. I have a complete IBM PCjr system with monitor and keyboard and several Apple IIGS systems all with keyboard, monitor and floppy drive. I also have some CoCo 2's, TI-99/4A's, some ugly Amiga 1000's and some C-64's. I realize these are aren't the rarest of computers but they are still fun to tinker with and the price is right. These are free for pickup only, I will not ship them. If you're passing through the St. Louis area on I-70 in St. Charles drop me a line and we can arrange a meeting. If you are able to stop by and feel like geeking out I have 300ish computers in the basement including an Atari 1400XL with 1090XL box, Altair 8800, IMSAI 8080, PET 2001 and others that you might like to check out. Nick

21 years, 10 months

HP41 problem..

by jos.mar＠bluewin.ch

My (unexpanded) HP41c developed a strange problem... It still knows how to do the maths, but any value stored inside a register gets lost : i.e. 1234 STO 12, RCL 12 yields 0.000.... Any pointers ( also pointers to a more suitable group ? ) Jos Dreesen

21 years, 10 months

Project Parts?

by mail.list＠analog-and-digital-solutions.com

Anyone recognize the bus type these go to? Might be good project parts? 5 Mupac Breadboard Prototype Cards NEW VME ?? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3403917114&category=36327 They're definitely not like any VME I've ever seen.

21 years, 10 months

cctech digest, Vol 1 #370 - 5 msgs

by paul.shubel＠verizon.net

> I tend to agree, but I would specialize that even further. As time goes on, > I become more convinced that ALU width should be the determinant of bittedness. > The 6809 requires multiple ALU passes for a 16 bit operation because the ALU > is 8 bits wide. The 68000 is a 16 bit processor for the same reason. > Hi Everyone, I have thought about this topic at length............... This is a much debated issue because microprocessors tend to have 8 and 16-bit instructions, while microcontrollers tend to have instructions that are limited to 8-bit operands. Really, does it matter what size the ALU is in silicon within the chip? I say no! When you are coding in assembly you're interested in what instructions are available to you. For example, the Z8, 8051, 6805, PIC16, etc.. have mainly 8-bit operations with few if any 16-bit operations. Note, please leave 16-bit jumps out of this discussion. The 6502 uses 8-bit operands also. On the other hand, the 8085, Z80, and 6801 are considered 8-bitters in the media but they have 16-bit operations that make them more powerful than the example micro-controllers above. Side note: Since these processors can handle 16-bit operands with ease, pointer arithmatic is very compact. Pointer arithmatic is very important when porting to high-level languages! I consider the 68HC11/6809 complete 16-bitters. Why not! They both have oodles of 16-bit operations, like the ever-useful 16-bit compare immediate! So here is how they stack-up: 8-Bitters: 6502, 6805, Z8, 8051, PIC16, TMS370, ST6 8/16-Bitters: 8085, Z80, ST7 16-Bitters: 68HC11, 6809, 8088/8086, 65816, 80C166, ST9 16/32-Bitters: 68000, Z8000, 80286 32-Bitters: 68020, 80386/Pentium, ARM, MIPS, NS32000 Cheers, Paul

21 years, 10 months

possibly OT: Enigma Cypher machine on e-bay.

by cb＠mythtech.net

> How was the D-day Museum? I've heard about it and I'd like to see it >some time. It was actually pretty interesting. I didn't expect to enjoy it being as I'm not a history buff (and slept thru most of my history classes). But my wife's grandfather served in WWII and was part of "Omaha Beach" (I'm pretty sure that was the one), so she really wanted to go. I found it to be far better than I expected, and am actually glad I went. It isn't very big, but there are a bunch of videos you can watch, and a TON of stuff to read. You can be in and out in an hour if you want, or 6 hours if you take your time. I think I was in there for about 3 or 4 hours myself. -chris <http://www.mythtech.net>

21 years, 10 months

Free Stuff in the Dallas Area

by jrice54＠charter.net

I have several items free for pickup in the Dallas area: Amiga 2000 with some type of accelerator board and a tape drive, mouse and keyboard; powers up and run's looks like it's running 3.1 Amiga 500 with an accelerator board; untested Amiga 500; untested A ton of Amiga software, a lot of games and a lot of programming tools some Amiga hardware, spare accel board, zorro breakout card, modem, some cables, 2 Commodore-Amiga monitors A Tandy 2000, keyboard, VM-1 monitor; powers up but I Tandy DWP printer with print wheel Calcomp 1043GT E size plotter and a couple of hundred pens, works but too much room Numonics 2200 E size digitizer with power supply and puck, again want to keep it but too much room All are free for pickup. I live in Rockwall (20 minutes from downtown Dallas) or I would take them to my office near Baylor hospital. I won't ship; it I was going to ship, I'd sell it on ebay. If it's not picked up by 3/16 or arrangements made for pickup, it's going on the curb for the landfill. -- http://webpages.charter.net/jrice54/classiccomp2.html

21 years, 10 months

possibly OT: Enigma Cypher machine on e-bay.

by kittstr＠access-4-free.com

I don't think this is a computer but maybe someone would be interested. ENIGMA Cypher machine army model: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2162414185

21 years, 10 months

Locating older systems & parts... (was: RE: making disk images)

by cb＠mythtech.net

>Except the dumpster is private property. Theft pure and simple, in the eyes >of the law. I'm not a lawyer, but this might be a regional opinion. I know the cops around here at least don't consider it private property unless A: the owner of the land chooses to press charges, or B: the property is some how restricted access or not normally public access. So for example, the dumpster I raided the other day, it was in the parking lot of a publically accessable and open building (a gym, a realtor, and a weight clinic), so the police wouldn't consider that private property unless the owner of the land (unlikely to be any of the tenants) choose to press tresspassing charges. But, the dumpster behind the local good will, probably WOULD be considered that by the police, because it is in the back parking lot of the building (which is not open for customer parking, its only available to the public when they are dropping things off), AND, the entire lot is chained off when the store is closed. And of course curbside garbage is always open season around here. The only time the cops hassle you on that is if you make a mess. But good garbage pickers always make sure they clean up after themselves. -chris <http://www.mythtech.net>

21 years, 10 months

possibly OT: Enigma Cypher machine on e-bay.

by cb＠mythtech.net

>Damm! Now there's something that you don't see everyday! I wonder how many are out there in private (non government) hands. I have seen one, in the D-Day Museum in New Orleans. -chris <http://www.mythtech.net>

21 years, 10 months

Outbound

by boo＠inksworks.com

Hello, I got your name when I googled for ³Outbound Systems². I have an Outbound Laptop serial# 26700007 that was traded to me by Outbound when I produced their first Œhow-to² video on swapping the ROM. I¹m getting ready to move to the boat and take off and need to trade the computer for $. It is missing the cable that connects it to drive peripherals. It has a unique connector I¹ve never seen and I can¹t find anyone who knows where to find it. I have an external disk drive and the SCSI box. It must have the silicon drive because it needs a disk to boot. Any advice on finding the cable and where best to offer it all for sale? Thanks for your time. Boo Inks -- Inks - Communications That Work 2219 Westlake Drive; Ste 200 Austin, TX 78746 Office# 512/327-5995 Cell# 512/750-6491

21 years, 10 months

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test-drb March 2003