Specs for brightness and contrast knobs on model 3?
Hi.. I already know that the contrast is 500ohm, and brightness is 500K, but can't seem to find the physical dimensions for ordering replacements from DigiKey.ca The brightness knob is very stiff to...
View ArticleIBM Workplace/OS
Hi i have been reading about IBM Workplace/OS found very little information. On Wikipedia says that an alphaversion was demonstrated working 2 o 3 times. Also i have tried to boot OS/2 Warp PPC edition...
View ArticlePaper tape images to physical tape
Hi, quick question, the image file format PDP-11 paper tapes are usually found as is .ptap. Does these need to be converted to .bin to be punched directly to actual paper tape? If so, then how? Thanks...
View ArticleIBM 5150+Extras
For sale is my prized setup. Pictures will come soon, since I'm traveling this weekend. System Unit 5150 Revision B 256KB Motherborad, CPU + Coprocessor 2 x 360k Tandon Disk Drives (Pass Diagnostics)...
View ArticleApple M0131 800k External 3.5" Disk Drive
I was doing a bit of cleaning to reduce my pile of miscellaneous parts and came across this drive. I last remember using it in the late 90s with one of my crackerbox macs at the time. I no longer have...
View ArticleLooking for an IBM 5170 chassis
I have all the makings of a 5170, but I do not have a chassis or power supply. Anyone got these for sale? The PSU does not have to be genuine IBM, but I would like the chassis to be. There are some...
View ArticleIBM 5170 and 5162 setup disks
Anyone got a copy of the 5162 setup disk? I found the one for the 5170, but it is a 360kb image, and all I have access to right now is 720kb and 1.44mb disks. I converted the image from a 360k to a...
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Bernoulli?
http://www.ebay.com/itm/TRS-80-Tandy...sAAOSwJ7RYShit? 1987 catalog: Interesting last 4 in the eBay url (NOT my doing :p ) Mike
View ArticleQuick question about DIRBUF
Hi In the CP/M DPH table is an entry called DIRBUF. The DRI documentation describes it as a 128 byte scratchpad area for directory operations. It also says that all drives use the same DIRBUF. Is there...
View ArticleIbm 60x5867 isa xma adapter
What is this? Never seen before. It is memory expansion board or something else? http://www.ebay.de/itm/IBM-60X5867-I...oAAOSwy4hUR9rp
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Motorola MVME162-200 CPU card power up, then if possible, how to fully expand...
Well being that I collect early Motorola single board computers and development systems, 12 months back, I jumped at the chance to get this VME board for a few $'s secondhand. Its looked mechanically...
View ArticleLoading paper tapes on a Q-BUS system: Explain it like I'm 5
Hi, and sorry for posting two threads in such a short time, the first one was just me not reading. I've finally got hold of a GNT tape puncher/reader combo, and of course, it'd be nice to use it with...
View ArticleFS: MITS Altair 88-C700 Centronics Parallel Printer Interface
link: http://www.ebay.com/itm/272480403564 Board is very clean, apparently this was intended to interface a MITS-branded Centronics C700 printer to the S-100 bus. I can't find much documentation for...
View ArticleData books
More bulk reduction, this is my collection of data books and application manuals. Almost all date from the 80's, some into the start of the 90's, odd one earlier, nothing newer than the MSP430....
View ArticleNCR repair manuals for cash registers and adding machines
More downsizing, this is my collection of service info from NCR, National Cash Register. Not really computers I suppose, but where else to advertise it? This is two shelves of books with repair...
View ArticleQuestion regarding 8272/765 programming
I've been converting my monitor/cold start loader for CPM from my old home made assembly language to ASM. In the process I found some old bugs that I repaired and I wanted to improve my Wait Interrupt...
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Looking for part# Z0869112VSC Zilog Z8 MCU
I need to repair a hard disk controller, I have identified the problem as a failed Zilog Z8 MCU, inserting a borrowed one made everything work again. I found a place that will sell me 100+ of them, but...
View ArticleUnhappy CBM 4040 - advice needed
Hi all Another 4040 problem.... i acquired a unit that was very dirty inside. I cleaned it up and powered it. It has basic 2 roms etc. After a few seconds noticed the Inductor L1 on the analog board...
View ArticleFS: Data Technology Corporation DTC-10-1 S-100 SASI Interface
link: http://www.ebay.com/itm/272480493687 Going through more duplicate/unused S-100 cards! This one is a SASI disk interface, and Bitsavers has a manual for it, linked in the auction listing....
View ArticleFS: Unknown S100 Host Interface Board
link: http://www.ebay.com/itm/272480498465 Don't know what it does, it's only labeled as "S100 Host Interface," it *is* made in the USA though! There's a 50-pin dual row connector on top, but the board...
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