SCIENTIFIC MICRO SYSTEMS

OMTI 510, OMTI 510-HA-3, OMTI 510-HA-7

OMTI 512, OMTI 512-HA-3, OMTI 512-HA-7

  Data bus:                  8-bit, ISA

  Size:                      Half-length, half-height card

  Hard drive supported:      Up to seven SCSI devices

  Floppy drives supported:   None

[Image]

                               CONNECTIONS

                     Function                             Location

  50-pin SCSI connector - internal                           J1

  37-pin SCSI connector - external (OMTI512 only)            J2

                        USER CONFIGURABLE SETTINGS

              Function                    Location            Setting

  »   SCSI Busy signal enabled               W1              pins 2 & 3
                                                              closed

      SCSI Busy signal disabled              W1              pins 1 & 2
                                                              closed

  »   SCSI Message signal enabled            W2              pins 2 & 3
                                                              closed

      SCSI Message signal disabled           W2              pins 1 & 2
                                                              closed

  »   SCSI parity check enabled              W4              pins 2 & 3
                                                              closed

      SCSI parity check disabled             W4              pins 1 & 2
                                                              closed

                        USER CONFIGURABLE SETTINGS

              Function                    Location           Setting

  »   BIOS enabled                           W7                open

      BIOS disabled                          W7               closed

  »   BIOS address is C800h                  W8                open

      BIOS address is CA00h                  W8               closed

  »   28-pin EPROM type enabled          W9 and W10         pins 1 & 2
                                                              closed

      24-pin EPROM type enabled          W9 and W10         pins 2 & 3
                                                             closed*

  »   SCSI Receive parity disabled          W11             pins 1 & 2
                                                              closed

      SCSI Receive parity enabled           W11             pins 2 & 3
                                                              closed

  Note: Cut the foil trace between pins 1 & 2 on Jumpers W9 and W10 if
  closing pins 2 & 3

                             I/O PORT ADDRESS

          Address                 Jumper W6               Jumper W5

  »          320h                   open                    open

             324h                   open                   closed

             328h                  closed                   open

             32Ch                  closed                  closed

                       MISCELLANEOUS TECHNICAL NOTES

   Jumper W3 is not used and should remain factory configured with pins 1
                        & 2 in the closed position.

     Do not disable SCSI Busy and Message signals (Jumpers W1 and W2)