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question on floppy

Discussion in 'Macintosh Computers' started by smalls92, Dec 29, 2004.

  1. macrumors newbie

    ok i know nothing about mac but we have a cnc lathe that has a floppy for program storage, and here is the model #

    M# 355f-2252mjs

    it's a regualr 1.44 format but when i went to my local comp usa and they game me a mitsumi 1.44 i noticed that it wasn't a regular 34 pin that some of the pins were actually not their.

    i also know that with a windows system the floppy cable part of it has a twist on in it ...

    ok now for my question when i look up the drive info on google it tells me that it's apple/mac so i say that's cool, but now going to look for on i find that their are scsi floopy with the model # mf355f

    ok so what is the different in a mac scsi floppy and a regualr mac flooppy or are they the same and how can i tell the difference? thanks for all the help and if anyone needs some windows herlp feel free to ask :)
  2. macrumors G4

    Prior to the introduction of the original iMac, all Macs that shipped with floppy drives shipped with SCSI floppy drives. Since then, if you want a floppy drive, you must buy a third-party USB drive. There is no such thing as a SCSI floppy drive that is "non-Mac."
  3. macrumors G5


    WTHYTA? Aint no such thing as a SCSI floppy disk. The floppy drive runs off its own controller. If'n it was a SCSI floppy, how did the Mac 128 and 512 drive the floppy, as they didn't have SCSI?

    The differences between a Mac floppy drive from a PC is the Mac drive is auto-inject (it draws the floppy in with a motor) and does not have an external eject button. The floppy interface for Mac is a 20-pin cable, PC's use a 34 pin floppy connector.


  4. macrumors G4

    When I responded to smalls92's original post, I knew that there would be smart@$$ who would point out the fact that there was a time when Macs did not use SCSI. I omitted the the ancient Macs from consideration because I assumed that smalls92 is not interesting in Macs made prior to 1986.
  5. macrumors G5


    And your point is?
    Floppies are not SCSI and have never been.
  6. macrumors G5


    Apple: "The drive is connected to a 20-pin connector on a cable that is connected to the main logic board."

    The floppy controller is called the SWIM chip (Super Woz Integrated Machine)

    Apple: "SWIM: Super Woz Integrated Machine, a custom IC that controls the floppy disk interface"

    In Powerbooks, the SWIM function was built into the custom Whitney IC along with other functions

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