SEAGATE TECHNOLOGY INC.

ST22M, ST22R

Data bus: 16-bit, ISA

Size: Half-length, full-height card

Hard drives supported: ST22M: Two MFM ST506/412 drives

ST22R: Two RLL ST412 drives

Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB

[Image]

                             CONNECTIONS

                    Function                          Location

  34-pin control cable connector- floppy drive           J1

  34-pin control cable connector-hard drive              J2

  20-pin data cable connector-drive 0                    J3

  20-pin data cable connector-drive 1                    J4

  4-pin connector-drive active LED                       J5

  5-pin connector-DC power                               J6

                        USER CONFIGURABLE SETTINGS

              Function                    Location            Setting

  »   BIOS enabled                           JP3               open

      BIOS disabled                          JP3              closed

  »   Floppy drive enabled                   JP4              closed

      Floppy drive disabled                  JP4               open

                           I/O AND BIOS ADDRESS

  HD Port Address       FD Port      BIOS Address      JP1         JP2
                        Address

  »     1F0-1F7,      3F0-3F5, 3F7    C800-CBFF       open        open
        3FF-3F7

        1F0-1F7,      3F0-3F5, 3F7    CC00-CFFF       open       closed
        3F6-3F7

        170-177,      370-375, 377    D800-DBFF      closed       open
        376-377

        170-177,      370-375, 377    DC00-DFFF      closed      closed
        376-377

      DRIVE PARAMETERS SUPPORTED BY THE ST22M

  Capacity      Heads      Cylinders       SPT

    21.4          4           615          17

    32.1          6           615          17

    42.5          5           977          17

    42.8          6           820          17

    44.5          5           1024         17

    80.2          9           1024         17

      DRIVE PARAMETERS SUPPORTED BY THE ST22R

  Capacity      Heads      Cylinders       SPT

    21.1          2           667          31

    32.7          4           615          26

    42.9          4           667          31

    49.1          6           615          26

    65.5          6           820          26

    122.7         9           1024         26