Commodore 1541 drives at Marietta Goodwill
I happened to stop at the Marietta Goodwill on Roswell road (the one near the big chicken) and surprisingly they had a pair of Commodore 1541 floppy drive units on the electronics shelf. For various...
View ArticleSpeedup for the Model 4
Reading over some old archives I found. Does anyone remember this tip for the model 4? SIMPLE SPEED MOD ================== Here's a simple modification for your Model 4. It requires no additional...
View Article7111 82S23 27S18 6330 74S188 18SA30 7602 prom burner help
I'm currently fixing a Nascom 2 (http://www.vcfed.org/forum/showthrea...roubleshooting)and need to replace a prom that I think does some sort of decoding. Looking...
View ArticleOsborne OCC1 computer monitor issue
Hi, I recently bought an Osborne portable computer, which seems to be working fine except for the monitor: at powerup the boot screen image scrolls vertically fast, so I am assuming there is something...
View ArticleI need Tandy 1400HD PSU information
Hi, Does anyone have the schematics for the Tandy 1400HD internal PSU? I only find information about the 1400LT PSU, but that one's very different. It would be nice to know more information about the...
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Inductor to Capacitor circuit on c64 board
Assy 250407 Artwork no. 251137 I have this jumper wire going from inductor L2 to capacitor C45. I'm using the service manual pages 23, 24 and 25 as reference. Also see image below IMAG0143.jpg I've...
View ArticleTandy 1000SX Floppy drive issues
Just as the title says. I am having various issues with my drives. the main issue I seem to have is that I cannot write a floppy disk and I cannot read some disks. I've ruled out some things as I've...
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Looking for pinout Videoton keyboard VDN 51521 (TYP: 52501)
Hello, Looking for keyboard pinout and protocol description, presumably from Videoton terminal: 0e88ed6367325315101c76b7cfdde136.jpg d648b4f4e76a3c46d29f6c1e9db4007c.jpg I want to connect it to modern...
View ArticleWordStar on the Model 4 - Terminal Type?
Quick question for the WordStar aficionados out there. In an effort to get a common word processor on all my 8-bit machines, I am trying to install WS v 3.00 on my TRS 80 model 4 (downloaded from...
View ArticleNEC UltraLite Laptop
Does any one know about the vintage (NEC UltraLite laptop), (model PC-17-02) that was a 1988 or maybe a 1989 year of production
View ArticleWTB: Voodoo 2 or any else equal card pci 12mb atleast or higher
Searching for a graphics card for my AST Advantage 7000 series. I have no super duper craving for exacly Voodoo 2, im open for anything graphics else thats minimum or higher to handle for instance...
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Motherboard IBM NetVista 6274-XXX
Buy or exchange for a motherboard IBM NetVista 6274-XXX Pentium4. Also needed is such a computer board: Needed as the original IBM external power supply:
View ArticleCompaq Portable +12V rail on motherboard is shorted.
Hi, Is this a two layer board? What is 12V used for on it out of curiosity? The PS shuts down very quickly after startup, presumably because of the short. Can I feed some voltage to it from a bench...
View ArticleWanted IBM 8560-041 Floppy Drive
I am trying to restore an old PS/2 tower 8560-041 and need a floppy disk drive. I understand there is one drive that is a smooth edge compatible unit- 72X8523. Does any member have one that is for sale...
View ArticleDEAD 386 board
This motherboard is DEAD. I guess it's a "UNICHIP". It says 367C REV 1.0 on it and also 386WB. When powered on nothing comes up on the screen other than a spike at power on. The power supply is good,...
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Tei computer
Today I've picked up an old TEI S100 system. It has a 8085 CPU. The previous owner used it for a decade as an external floppy drive on an IBM compatible machine... How low can you go. Well it probably...
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40th Anniversary Reissue of The New Apple II User's Guide
The Apple II computer celebrates its 40th anniversary this summer and to celebrate, The New Apple II User's Guide by David Finnigan is now reissued under new 40th anniversary covers. The New Apple II...
View ArticleCompaq LTE 286 - Loan me a floppy drive and I'll give you the whole machine!
I have an LTE 286. Everything works except the floppy drive. The belt was bad, and I was able to temp one with a rubber band. The top (floating) head is bad. Because the CMOS battery had died, I'm not...
View ArticleApple 2e HAL/PAL
Has anyone had experience replacing the HAL chip with a GAL? I programmed a GAL16v8d-25lp with this file and a board that works fine with an original PAL gets memory errors using the programmed GAL...
View ArticleVery old viruses on floppy images, need antivirus
Hello friends, I recently came across a collection of old floppy disk images. Most of them saved with EPLCopy, which means I had to find a way to convert them into regular raw images. The problem is...
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