
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)

