CMS ENHANCEMENTS, INC.

HBA-SA0

Data Bus                8/16 bit ISA
Card Size               Full height, half length
Hard Drives Supported   Up to 7 SCSI devices
Floppy Drives Supported None

[Image]

                                CONNECTIONS

          Function             Label           Function            Label

  50-pin SCSI connector -       J1      1.5A fuse                   F1
  internal

  50-pin SCSI connector -       J2      4-pin drive active LED     LED3
  external

  3-pin DC power out            J6

                        USER CONFIGURABLE SETTINGS

                  Setting                       Label        Position

  »   TERMPWR enabled                            W1          Pins 1 & 2
                                                              closed

      TERMPWR disabled                           W1          Pins 2 & 3
                                                              closed

  »   Card uses 8-bit transfers                  W5          Pins 1 & 2
                                                              closed

      Card uses 16-bit transfers                 W5          Pins 2 & 3
                                                              closed

                     SOFTWARE SUPPORTED CONFIGURATIONS

        BIOS Address                  IRQ                    DMA

           C000h                      10                      6

           C800h                      11                      6

           D000h                      12                      7

           D800h                      10                      5

            Note:IRQ and DMA are BIOS address dependent and must be set
            in these combinations.

                          BIOS ADDRESS SELECTION

           Setting                    S3/7                   S3/8

              C000h                    On                     On

              C800h                   Off                     On

              D000h                    On                    Off

  »           D800h                   Off                    Off

                           DMA CHANNEL SELECTION

  Setting      W2/A       W2/B      W2/C      W4/A      W4/B       W4/C

  »   DMA5     Open       Open     Closed     Open      Open      Closed

      DMA6     Open      Closed     Open      Open     Closed      Open

      DMA7    Closed      Open      Open     Closed     Open       Open

                            INTERRUPT SELECTION

       Setting              W3/A              W3/B             W3/C

  »       IRQ10             Open              Open            Closed

          IRQ11             Open             Closed            Open

          IRQ12            Closed             Open             Open

                             DMA TRANSFER RATE

    Transfer        DRAM       S3/1   S3/2    S3/3   S3/4    S3/5   S3/6

  »   3.33MBps    200-250nS    Off     On     Off     On     Off     Off

      4.55MBps    150-200nS    Off    Off     On      On     On      Off

      5.56MBps    120-150nS    On     Off     On     Off     Off     On

      7.14MBps    80-120nS     Off     On     On      On     Off     On

       10MBps      40-80nS     On      On     On     Off     On      On

      12.5MBps      <40nS      On      On     On      On     On      On

                           SCSI TERMINATION

     Setting             R1                R2                R3

    Terminated        Installed         Installed        Installed

  Not terminated    Not installed     Not installed    Not installed