
AMERICAN MULTISOURCE, INC.

SM4

 Data bus:                16-bit ISA

 Size:                    Three/quarter-length, full-height card

 Hard drive supported:    Two MFM ST506/412 drives

 Floppy drives            Four 360KB, 720KB, 1.2MB, 1.44MB drives
 supported:



[Image]

                                CONNECTIONS

                    Function                             Location

  34-pin control cable connector - hard drive               J1

  20-pin data cable connector                               J2

  20-pin data cable connector                               J3

  34-pin connector - floppy drive interface                 J4
  (drives 1 & 2)

  4-pin connector - drive active LED                        J5

  34-pin connector - floppy drive interface                 J6
  (drives 3 & 4)

  34-pin connector - floppy drive interface                 J7
  (drives 3 & 4) - external

                        USER CONFIGURABLE SETTINGS

                 Function
                                              Location
                                                               Setting

  
      Floppy drive interface address
      select primary
                                                 W8
                                                                open


      Floppy drive interface address
      select secondary
                                                 W8
                                                               closed

  
      Hard drive address is primary
                                                 W11
                                                                open


      Hard drive address is secondary
                                                 W11
                                                               closed

                    HARD DRIVE INTERFACE CONFIGURATION

           Setting                       W5                   W12

            Enabled             pins 2 & 3 closed           closed

             Disabled            pins 1 & 2 closed            open

                   FLOPPY DRIVE INTERFACE CONFIGURATION

           Setting
                                         W9
                                                              W10

  
              Enabled
                                       closed
                                                             closed


             Disabled
                                        open
                                                              open

  Note: The location of W9 is unidentified.

