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Thread: Help Identifying MCA Card

  1. #1

    Question Help Identifying MCA Card

    I recently got a IBM Micro Channel card with a PS/2 Model 80, but I’m having trouble identifying it. The seller stated it was a “89F8891 PSPI Card” but I cannot find any markings other than the aforementioned assembly number. When the computer boots without it, it doesn’t error; with it, it displays the picture below (I don’t have a battery, hence the 161 and 163 errors). Can anyone identify it?

    image.jpg
    image.jpg

    Sorry for the upside-down pictures. Regardless of orientation, the come up like that.

  2. #2
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    Quote Originally Posted by RHopple View Post
    I recently got a IBM Micro Channel card with a PS/2 Model 80, but Iím having trouble identifying it. The seller stated it was a ď89F8891 PSPI CardĒ but I cannot find any markings other than the aforementioned assembly number. When the computer boots without it, it doesnít error; with it, it displays the picture below (I donít have a battery, hence the 161 and 163 errors). Can anyone identify it?

    image.jpg
    image.jpg

    Sorry for the upside-down pictures. Regardless of orientation, the come up like that.
    Is that a SCSI connector on the backplane? A photo of that would be helpful, and the chip labels are difficult to read.

  3. #3
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    There is a program called IDMCA.EXE floating around that will dump the board ID code and cross reference it to a known database.
    "Good engineers keep thick authoritative books on their shelf. Not for their own reference, but to throw at people who ask stupid questions; hoping a small fragment of knowledge will osmotically transfer with each cranial impact." - Me

  4. #4

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    Itís not a SCSI connector, but a DB40. Hereís some more pictures. image.jpgimage.jpg

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    78 pin. Maybe a multi-serial card?
    "Good engineers keep thick authoritative books on their shelf. Not for their own reference, but to throw at people who ask stupid questions; hoping a small fragment of knowledge will osmotically transfer with each cranial impact." - Me

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    Run off a list of the part numbers on the board with the 11A1111 naming scheme.
    I can see another part number on the ROM but the image is too low res to read it clearly.
    = Excellent space heater

  7. #7

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    PSPI is the support processor interface for a 9121 mainframe.

  8. #8

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    The only part number on the board, or marking for that matter, is 89F8891. The ROM number is 73F5746. Although I have no use for it, It would be interesting if it was a mainframe interface card.

  9. #9

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    Quote Originally Posted by eeguru View Post
    There is a program called IDMCA.EXE floating around that will dump the board ID code and cross reference it to a known database.
    I can't find any reference of that program with a Google search. Any possibility you have a link?

  10. #10
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    Quote Originally Posted by aaron7 View Post
    I can't find any reference of that program with a Google search. Any possibility you have a link?
    https://www.tavi.co.uk/ps2pages/
    "Good engineers keep thick authoritative books on their shelf. Not for their own reference, but to throw at people who ask stupid questions; hoping a small fragment of knowledge will osmotically transfer with each cranial impact." - Me

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