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Thread: Magnetic Peripherals BR8B2A 5.25" Floppy Drive Manual?

  1. #1

    Default Magnetic Peripherals BR8B2A 5.25" Floppy Drive Manual?

    I'm looking for any information on the Magnetic Peripherals BR8B2A 5.25" floppy drive. This was used in IBM PCs for a while so it's probably compatible with the Tandon TM100-2A but I'd like a manual specific to the drive itself. I checked bitsavers but no luck.

    If you have a manual or scan I could buy or if you know of a site that has one, please let me know!

    TIA

    Tom L

  2. #2
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    Have you checked here.

    CDC/MPI drive models can be confusing (and misleading); if it's a full-height drive, it's likely very simlar to the 9409; if half-height, the 9428.

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    If full-height, it could also be similar to the MPI 52.

  4. #4

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    Thanks, all! I never would've looked for it under 9409 but that seems to be the one it is. I guess CDC never intended to sell them for the retail market, just OEMs.

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    You'll go nuts trying to make sense of CDC internal numbers and MPI model numbers/OEM numbers. All seemed to propagate like cockroaches.

    Best bet is to match up what you have with documentation. I've got a couple of MPI model 52s but 100 tpi with an add-on READY/ detection and Micropolis pinout. Since the paper labels have long since dried out and blown away, I have no idea what the OEM number was.

    That extends even to hard drives. If you had a CDC mainframe, you knew a drive by one name; the same basic drive OEMed to another vendor went by another and, to be even more complex, the same drive within a different division of CDC went by a different number.

    But it was pretty much always that way--the big hulking horizontal spindle drives were in the Bryant catalog as the 4000 series, but if you used on on a CDC 6000 series mainframe, they were called a 6603.
    Last edited by Chuck(G); May 20th, 2020 at 12:30 PM.

  6. #6

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    Quote Originally Posted by Chuck(G) View Post
    You'll go nuts trying to make sense of CDC internal numbers and MPI model numbers/OEM numbers. All seemed to propagate like cockroaches.
    How true that is!

    Quote Originally Posted by Chuck(G) View Post
    Best bet is to match up what you have with documentation.
    The problem was that I had no documentation and couldn't find any using the model number on the drive itself so I had no idea where to look.

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