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  1. One hint are the TI ZA1250 "piggyback" 128Kx1...

    One hint are the TI ZA1250 "piggyback" 128Kx1 DRAM chips. If you need to replace them, they can be a bit hard to find--but I've seen ebay sellers offering pulls.
  2. There's still a pretty fair amount of CP/M...

    There's still a pretty fair amount of CP/M embedded in industrial PLCs. The old iron lasts and lasts.
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    Yeah, 5.25" drives in 1973 didn't exist. Most...

    Yeah, 5.25" drives in 1973 didn't exist. Most of my Wang WP samples are 8" hard-sectored floppies.
  4. Thread: My new 5160

    by Chuck(G)
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    There was also a Sams' Computerfact for the 5160,...

    There was also a Sams' Computerfact for the 5160, which might be helpful.
  5. That's the idea--but before you apply power, make...

    That's the idea--but before you apply power, make sure it's dry (i.e. no water trapped under components or in sockets).

    Some folks use the dishwasher (no detergent, just water), but you probably...
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    Isn't that a water-base (i.e. Latex) paint meant...

    Isn't that a water-base (i.e. Latex) paint meant for walls and wood? I don't know how well that will work on metal.

    Good luck.
  7. Wash the crud off. dry thoroughly--start with...

    Wash the crud off. dry thoroughly--start with plain water. The IDE drive controller's nothing special, but you could try cleaning that and see if it's salvageable.
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    Sounds like an SVGA--old post with the same 9 pin...

    Sounds like an SVGA--old post with the same 9 pin question
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    For me, pre-1975, the only bit of Wang gear was...

    For me, pre-1975, the only bit of Wang gear was the LOCI-2 that the psychology department owned. After that, nothing. So I was oblivious to the 2200.
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    Was the 2200 any more "personal" than the HP...

    Was the 2200 any more "personal" than the HP 9830A/9831 with its BASIC in ROM?

    I doubt that either was "personal" in a budgetary sense and I doubt that either had a significant effect on PC...
  11. Thread: Ibm 8203-e4a

    by Chuck(G)
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    pseries...

    pseries

    AIX and IBM Linux seem to be it.
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    Some Diamondscans used DB25 at the monitor.

    Some Diamondscans used DB25 at the monitor.
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    What did in Wang Labs was the senior (An) Wang...

    What did in Wang Labs was the senior (An) Wang delegating responsibilities to his son (Fred). By the time Fred was forced out, the company was drowning in debt and revenues had shrunk. Must have...
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    Or the Sony CPD-1302, that I had. Great monitor...

    Or the Sony CPD-1302, that I had. Great monitor for the time. See page 7 in the manual for how it was done: Switches!

    For the time, it was remarkable that you could go from CGA to 800x600 VGA. ...
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    Judge for yourself. The Vaster cable shown here...

    Judge for yourself. The Vaster cable shown here gives the pinouts of both ends. I probably still have the cable for my old Sony Multiscan monitor (9 pin) to VGA (15 pin), but can't swear that it...
  16. I've had a Sony 7F-4DL 11 transistor AM/FM radio...

    I've had a Sony 7F-4DL 11 transistor AM/FM radio for many years. Powered by 3 "D" cells, which last virtually forever. Has connectors for automobile use.
    ...
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    0.125" according to the IEEE 696 standard...

    0.125" according to the IEEE 696 standard. See section 4.2.

    I've run across some who claim that it's 0.100", but that's mostly promoted by a seller who finds himself with a potload of 100 pin...
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    Yeah, the GB200 is the CGA card. Half-length, so...

    Yeah, the GB200 is the CGA card. Half-length, so it works in the 5154.
  19. The Big Blue Seed manual lists three boards (ECS,...

    The Big Blue Seed manual lists three boards (ECS, JLS OBM-100, and HAL with 5150 connector spacing) with no motherboard memory.

    This looks to be an XT adaptation of that.
  20. There were some early systems like this--I even...

    There were some early systems like this--I even think that one of the magazines had such a system (was it Steve Ciarcia?) Memory was on a separate board.
  21. On the subject of OISCs, consider TTA...

    On the subject of OISCs, consider TTA The interesting part is that the instruction set (one instruction) never changes, but you can add functionality quite simply.
  22. I'm assuming twos-complement, but bitwise...

    I'm assuming twos-complement, but bitwise complement is obtained by subtracting from all 1's. e.g. FFFF-AAAA = 5555, FFFF-0000 = FFFF, etc.
  23. Yeah, pretty much--and word size.

    Yeah, pretty much--and word size.
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    Weren't there DSDD retrofit kits for those? ...

    Weren't there DSDD retrofit kits for those?

    ISTR that early TRS-DOS used address marks with the 1771 that later WD controllers couldn't uniquely distinguish from others when reading. I believe...
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    Okay, I remember that Model I used a 1771 for the...

    Okay, I remember that Model I used a 1771 for the disk drive controller, which I normally think of as an 8" controller (cf datasheet). That's what probably caused the brain fart. So, what, <90KB on...
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