
STORAGE DIMENSIONS

SDC1602

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

     Synchronous negotiation initiation     J5/1             Open
      disabled

      Synchronous negotiation initiation     J5/1            Closed
      enabled

     Factory configured - do not alter      J5/2             Open

     SCSI parity check disabled             J5/3            Closed

      SCSI parity check enabled              J5/3             Open

     SCSI BIOS enabled                      J6/1            Closed

      SCSI BIOS disabled                     J6/1             Open

     Factory configured - do not alter      J6/2         Unidentified

     Factory configured - do not alter      J6/3         Unidentified

     Factory configured - do not alter      J6/4         Unidentified

     SCSI auto sense enabled                J6/5             Open

      SCSI auto sense disabled               J6/5            Closed

     Floppy interface address 3F0h          J7/1             Open
      enabled

      Floppy interface address 370h          J7/1            Closed
      enabled

     Floppy drive interface enabled         J8/1            Closed

      Floppy drive interface disabled        J8/1             Open

     Floppy drive dual speed disabled       J8/8             Open

      Floppy drive dual speed enabled        J8/8            Closed

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

                             SCSI ID SELECTION

     SCSI ID             J5/4               J5/5               J5/6

           0            Closed             Closed             Closed

           1             Open              Closed             Closed

           2            Closed              Open              Closed

           3             Open               Open              Closed

           4            Closed             Closed              Open

           5             Open              Closed              Open

           6            Closed              Open               Open

          7             Open               Open               Open

                         DMA CHANNEL SELECTION (1)

         Channel                   J5/7                     J5/8

              0                   Closed                   Closed

             5                    Open                    Closed

              6                   Closed                    Open

              7                    Open                     Open

                      FLOPPY INTERFACE DMA SELECTION

    Channel          J8/2          J8/3           J8/4           J8/5

         2         Closed         Open          Closed          Open

          3          Open         Closed          Open          Closed

                       DMA TRANSFER SPEED SELECTION

           Setting                   J5/12                  J5/13

          5.0 MB/sec                 Open                   Open

           5.7 MB/sec                Closed                  Open

           6.7 MB/sec                 Open                  Closed

           8.0 MB/sec                Closed                 Closed

                            DMA CHANNEL SELECTION (2)

  Channel   J9/1     J9/2     J9/3     J9/4     J9/5    J9/6     J9/7     J9/8

       0    Closed   Open     Open     Open    Closed   Open     Open     Open

      5    Open    Closed    Open     Open     Open    Closed   Open     Open

       6    Open     Open    Closed    Open     Open    Open     Closed   Open

       7    Open     Open     Open    Closed    Open    Open     Open     Closed

            Note: Settings must match J5 settings (DMA table 1).

                        BASE I/O ADDRESS SELECTION

      Setting              J7/2              J7/3              J7/4

           130            Closed             Open             Closed

           134             Open              Open             Closed

           230            Closed            Closed             Open

           234             Open             Closed             Open

          330            Closed             Open              Open

           334             Open              Open              Open

                          BIOS ADDRESS SELECTION

          Setting                    J7/7                   J7/8

             C800h                  Closed                 Closed

             CC00h                  Closed                  Open

             D800h                   Open                  Closed

            DC00h                   Open                   Open

                     FLOPPY DRIVE INTERRUPT SELECTION

            IRQ                      J8/6                   J8/7

             IRQ6                  Closed                  Open

             IRQ10                   Open                  Closed

                          INTERRUPT SELECTION (1)

         IRQ                J5/9             J5/10             J5/11

           IRQ9             Open              Open             Open

          IRQ10            Closed             Open             Open

         IRQ11             Open             Closed            Open

          IRQ12            Closed            Closed            Open

          IRQ14             Open              Open            Closed

          IRQ15            Closed             Open            Closed

                          INTERRUPT SELECTION (2)

     IRQ        J9/9      J9/10     J9/11     J9/12     J9/13     J9/14

      IRQ9     Closed     Open      Open      Open       Open      Open

      IRQ10     Open     Closed     Open      Open       Open      Open

     IRQ11     Open      Open     Closed     Open       Open      Open

      IRQ12     Open      Open      Open     Closed      Open      Open

      IRQ14     Open      Open      Open      Open      Closed     Open

      IRQ15     Open      Open      Open      Open       Open     Closed

            Note:The above settings must match J5 settings (interrupt
            selection table 1).

                       IOCHRDY WAIT STATE SELECTION

           Setting                    J7/5                   J7/6

            Disabled                 Open                   Open

              100ns                  Closed                  Open

              200ns                   Open                  Closed

              300ns                  Closed                 Closed

                       MISCELLANEOUS TECHNICAL NOTES

  Remove terminating resistors when connecting external and internal
  devices.

