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  1. Request for help on 5170 Mobo

    Quote Originally Posted by Sabertooth View Post
    I have purchased an IBM 5170 with the Type 1 Mobo. I knew it didn't work when I got it but I do have some electronics background and thought I could make it work. I have changed out all the tantalum caps as well as a few of the MLCC. I installed the Supersoft BIOS v1.2 and it led me in a direction where I changed both 9517 DMA IC,s, replaced the original memory chips with NOS KM4128-15 the 8254 timer, 8942 keyboard controller and the 146818 RTC. I still get the same results as I have befofre
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  2. Tandy 1000 mouse

    On the CoCo, some very smart lads figured out how to get the CoCo to do high resolution via software and not via the high resolution interface.

    I would think that the principles they outlined could be made into a better driver for the 1000.
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  3. ITT PowerSave 500 - UPS on an ISA card

    This is actually a board that was on loan to me for the last week while I removed the batteries. It's a 230w rated UPS with a 15 minute reserve capacity that's designed to plug INSIDE YOUR PC and connects in parallel with your power supply. A little bit of software shuts the system down gracefully when it is engaged, however makes the system immune to accidental cord pulling or power switch flipping, which are probably the two last things you could do to idiot-proof a server.

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  4. Decent socket 370 motherboard in Baby AT form factor.

    Quote Originally Posted by alpher View Post
    Quote Originally Posted by blackepyon View Post
    Yeah. Best thing to do is make a list of the stuff you ACTUALLY need and just keep an eye for when it's on for a good price.
    I actually picked up my HP 16500B at a local retro-computer meet. The guy had a second one and wanted to get rid of it, and I offered him $100, he said, "sold!" I was looking at cheap USB logic analyzers online, but this was the right thing at the right price and the right time, especially given what shipping would have cost if I got one of these on eBay
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  5. IBM Fixed Disk and Diskette Drive Adapter For 5170

    Quote Originally Posted by lutiana View Post
    Is that an MFM controller? If so I can dig through my small collection of the things and send you one or two that may or may not work for the cost of shipping if it helps.
    Yes itís an MFM controller that also had the floppy controller built into it.
    That would be great if you had one.
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