
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 (CONT)

                  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.

