AMERICAN MULTISOURCE, INC.
==========================

   SM4

    Data bus:            16-bit ISA                               

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

    Hard drive           Two MFM ST506/412 drives                 
    supported:           

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

    

<gopher://bitreich.org/I/th99/c/A-B/20805-1.png>
   

   +------------------------------------------------------------+
   |                        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    |    W8    |  open   |
   |   | select primary                    |          |         |
   |---+-----------------------------------+----------+---------|
   |   | Floppy drive interface address    |    W8    | closed  |
   |   | select secondary                  |          |         |
   |---+-----------------------------------+----------+---------|
   |>> | 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.                  |
   +------------------------------------------------------------+