OLIVETTI

ASC-1 (BK09A)

  Data bus:                  16-bit ISA

  Size:                      Half-length, full-height card

  Hard drive supported:      Up to seven SCSI devices

  Floppy drives supported:   None

[Image]

                    CONNECTIONS

              Function                 Location

  50-pin SCSI connector - external        CN1

                        USER CONFIGURABLE SETTINGS

              Function                    Location           Setting

  »   Synchronous Negotiation               J5/1               Open
      disabled

      Synchronous Negotiation               J5/1              Closed
      enabled

  »   SCSI parity check enabled             J5/2               Open

      SCSI parity check disabled            J5/2              Closed

  »   Factory configured - do not           J5/3               Open
      alter

  »   On-board BIOS enabled                 J6/1              Closed

      On-board BIOS disabled                J6/1               Open

  »   Factory configured - do not           J6/2               N/A
      alter

  »   Factory configured - do not           J6/3               N/A
      alter

  »   Factory configured - do not           J6/4               N/A
      alter

  »   Auto-sense disabled                   J6/5              Closed

      Auto-sense enabled                    J6/5               Open

  »   Factory configured - do not           J7/1               N/A
      alter

  BIOS ADDRESS SELECTION (MAINBOARDS M480-10 AND M480-20 ONLY)

    Address               J7/7                     J7/8

  C8000-CBFFFh           Closed                   Closed

  CC000-CFFFFh           Closed                    Open

  D8000-DBFFFh            Open                    Closed

  DC000-DFFFFh            Open                     Open

                        BASE I/O ADDRESS SELECTION

       Address             J7/2              J7/3              J7/4

          130h            Closed             Open             Closed

          134h             Open              Open             Closed

          230h            Closed            Closed             Open

          234h             Open             Closed             Open

  »       330h            Closed             Open              Open

          334h             Open              Open              Open

        WAIT STATE SELECTION (MAINBOARDS M480-10 AND M480-20 ONLY)

            Setting                    J7/5                  J7/6

  »   IOCHRDY signal disabled          Open                  Open

              100 ns                  Closed                 Open

              200 ns                   Open                 Closed

              300 ns                  Closed                Closed

                             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

                             AT INTERRUPT CHANNEL SELECTION

   IRQ     J5/9    J5/10    J5/11     J9/9    J9/10    J9/11    J9/12    J9/13   J9/14

      9    Open     Open     Open    Closed   Open     Open     Open     Open     Open

      10  Closed    Open     Open     Open    Closed   Open     Open     Open     Open

  »   11   Open    Closed    Open     Open    Open     Closed   Open     Open     Open

      12  Closed   Closed    Open     Open    Open     Open     Closed   Open     Open

      14   Open     Open    Closed    Open    Open     Open     Open     Closed   Open

      15  Closed    Open    Closed    Open    Open     Open     Open     Open    Closed

                               DMA SELECTION

  Channel      J5/7      J5/8       J9/1      J9/2       J9/3      J9/4

        0       N/A       N/A      Closed     Open       Open      Open

  »     5      Open     Closed      Open     Closed      Open      Open

        6     Closed     Open       Open      Open      Closed     Open

        7      Open      Open       Open      Open       Open     Closed

  Note: Jumpers J9/5 through J9/8 are also used to select DMA Channel.

                         DMA SELECTION (CONTINUED)

    Channel          J9/5          J9/6           J9/7           J9/8

          0         Closed         Open           Open           Open

  »       5          Open         Closed          Open           Open

          6          Open          Open          Closed          Open

          7          Open          Open           Open          Closed

  Note: Jumpers J5/7, J5/8, and J9/1 through J9/4 are also used to select
  DMA Channel.

                       DMA TRANSFER SPEED SELECTION

           Speed                     J5/12                  J5/13

  »         5.0 MB/s                 Open                    Open

            5.7 MB/s                Closed                   Open

            6.7 MB/s                 Open                   Closed

            8.0 MB/s                Closed                  Closed

                       MISCELLANEOUS TECHNICAL NOTES

        Jumper J6/1 should not be inserted when the system is in AT
       configuration with the BIOS of the magnetic peripherals on the
                                mainboard.