STORAGE DIMENSIONS

SDC1602A

Card Type               Hard drive controller
Hard Drives supported   Up to 7 SCSI-1 devices
Floppy drives supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives
Data Bus                16-bit ISA
Card Size               Half-length, full-height

[Image]

                                CONNECTIONS

        Function          Location           Function           Location

  50-pin SCSI connector      CN1      4-pin connector -           CN4
  - external                          drive active LED

  50-pin SCSI connector      CN2      SCSI active LED             CN5
  - internal

  34-pin cable connector     CN3
  - floppy drive

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

  »   Factory configured - do not alter          J5/1          Open

  »   Factory configured - do not alter          J5/2         Closed

  »   Factory configured - do not alter          J5/3          Open

  »   Factory configured - do not alter          J5/4          Open

  »   Factory configured - do not alter          J5/5         Closed

  »   Factory configured - do not alter          J5/6         Closed

  »   Factory configured - do not alter          J5/7          Open

  »   Factory configured - do not alter          J5/8          Open

  »   Factory configured - do not alter          J6/4          Open
      (Interrupt selection)

  »   Factory configured - do not alter          J6/5         Closed
      (Interrupt selection)

  »   Factory configured - do not alter          J6/6          Open
      (DMA selection)

  »   Factory configured - do not alter          J6/7          Open
      (DMA selection)

  »   SCSI parity check disabled                 J6/8          Open

      SCSI parity check enabled                  J6/8         Closed

  »   Floppy drive interface enabled             J7/1         Closed

      Floppy drive interface disabled            J7/1          Open

  »   Factory configured - do not alter          J7/2         Closed
      (DMA 2 or 3 selection)

  »   Factory configured - do not alter          J7/3          Open
      (DMA 2 or 3 selection)

  »   Factory configured - do not alter          J7/4         Closed
      (DMA 2 or 3 selection)

  »   Factory configured - do not alter          J7/5          Open
      (DMA 2 or 3 selection)

                    USER CONFIGURABLE SETTINGS (CON’T)

                  Function                      Label        Position

  »   Floppy drive dual speed enabled            J7/8         Closed

      Floppy drive dual speed disabled           J7/8          Open

  »   Primary I/O port address 340h enabled      J9/5          Open

      Secondary I/O port address 140h            J9/5         Closed
      enabled

  »   Factory configured - do not alter          J9/6         Closed
      (BIOS address selection)

  »   Factory configured - do not alter          J9/7         Closed
      (BIOS address selection)

  »   SCSI BIOS enabled                          J9/8         Closed

      SCSI BIOS disabled                         J9/8          Open

            Note:Disable BIOS when SDC1602A is a secondary card in the
            system.

                             SCSI ID SELECTION

     SCSI ID             J6/1               J6/2               J6/3

  »        7            Closed             Closed             Closed

            Note:Other settings are unidentified.

                              DMA CHANNEL SELECTION

  Channel   J8/1     J8/2     J8/3     J8/4     J8/5    J8/6     J8/7     J8/8

  »    0    Open     Open     Open    Closed    Open    Open     Open     Closed

       5    Open     Open    Closed    Open     Open    Open     Closed   Open

       6    Open    Closed    Open     Open     Open    Closed   Open     Open

       7    Closed   Open     Open     Open    Closed   Open     Open     Open

                     FLOPPY DRIVE INTERRUPT SELECTION

            IRQ                      J7/6                   J7/7

  »           IRQ6                  Closed                  Open

             IRQ10                   Open                  Closed

                            INTERRUPT SELECTION

       IRQ            J9/1          J9/2          J9/3           J9/4

         IRQ9         Open          Open          Open          Closed

        IRQ10         Open          Open         Closed          Open

  »     IRQ11         Open         Closed         Open           Open

        IRQ12        Closed         Open          Open           Open

                       MISCELLANEOUS TECHNICAL NOTES

  Remove terminating resistors when connecting external and internal
  devices.