(TXT) View Source
       
       # AMERICAN MEGATRENDS, INC.
       
          ENTERPRISE-II SERIES 16
       
          Device Type      Mainboard                                     
          Processor        80486SX/80487SX/80486DX                       
          Processor Speed  25/33/50MHz                                   
          Chip Set         Intel                                         
          Video Chip Set   None                                          
          Maximum Onboard  96MB                                          
          Memory           
          Maximum Video    None                                          
          Memory           
          Cache            128KB                                         
          BIOS             AMI                                           
          Dimensions       355mm x 304mm                                 
          I/O Options      External memory card, floppy drive interface, 
                           PS/2 mouse port                               
          NPU Options      4167                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | AMI module        |    J5    | Turbo switch     |   J18    |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | PS/2 mouse port   |    J6    | Turbo LED        |   J19    |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |    J8    | Power connector  |   PS1    |
          | interface         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | AMI module        |    J9    | Power connector  |   PS2    |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |   J13    | Power connector  |   PS3    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   J14    | External memory  |   SL1    |
          | keylock           |          | card             |          |
          |-------------------+----------+------------------+----------|
          | Reset switch      |   J17    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | Floppy drive select XT/AT         |  J12  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Floppy drive select PS/2          |  J12  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter |  J22  |   Closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SW1/1 |    Off     |
          |---+-----------------------------------+-------+------------|
          | » | Monitor type select monochrome    | SW1/2 |    Off     |
          |---+-----------------------------------+-------+------------|
          |   | Monitor type select color         | SW1/2 |     On     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SIMM CONFIGURATION (MAINBOARD)               |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |         SIMM CONFIGURATION (EXTERNAL MEMORY CARD)          |
          |------------------------------------------------------------|
          |  Size  |     Bank 2     |  Bank 3   |  Bank 4   |  Bank 5  |
          |--------+----------------+-----------+-----------+----------|
          |  4MB   |   (4) 1M x 9   |   None    |   None    |   None   |
          |--------+----------------+-----------+-----------+----------|
          |  8MB   |   (4) 1M x 9   | (4) 1M x  |   None    |   None   |
          |        |                |     9     |           |          |
          |--------+----------------+-----------+-----------+----------|
          |  8MB   |   (4) 1M x 9   |   None    | (4) 1M x  |   None   |
          |        |                |           |     9     |          |
          |--------+----------------+-----------+-----------+----------|
          |  16MB  |   (4) 4M x 9   |   None    |   None    |   None   |
          |--------+----------------+-----------+-----------+----------|
          |  16MB  |   (4) 1M x 9   | (4) 1M x  | (4) 1M x  | (4) 1M x |
          |        |                |     9     |     9     |    9     |
          |--------+----------------+-----------+-----------+----------|
          |  32MB  |   (4) 4M x 9   | (4) 4M x  |   None    |   None   |
          |        |                |     9     |           |          |
          |--------+----------------+-----------+-----------+----------|
          |  32MB  |   (4) 4M x 9   |   None    | (4) 4M x  |   None   |
          |        |                |           |     9     |          |
          |--------+----------------+-----------+-----------+----------|
          |  64MB  |   (4) 4M x 9   | (4) 4M x  | (4) 4M x  | (4) 4M x |
          |        |                |     9     |     9     |    9     |
          |------------------------------------------------------------|
          | Note: To install maximum memory of 96MB, fully populate    |
          | mainboard with 32MB & install memory card with 64MB        |
          | installed.                                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |           128KB            |          (4) 32K x 8          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          | Speed  |        J2        |      J27       |      J35      |
          |--------+------------------+----------------+---------------|
          | 25MHz  |    Pins 1 & 2    |   Pins 1 & 2   |  Pins 2 & 3   |
          |        |      closed      |     closed     |    closed     |
          |--------+------------------+----------------+---------------|
          | 33MHz  |    Pins 1 & 2    |      Open      |  Pins 2 & 3   |
          |        |      closed      |                |    closed     |
          |--------+------------------+----------------+---------------|
          | 50MHz  |    Pins 1 & 2    |   Pins 1 & 2   |  Pins 1 & 2   |
          |        |      closed      |     closed     |    closed     |
          |------------------------------------------------------------|
          | Note: If CPU is revision, B6 or earlier, leave J2 open.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CPU TYPE SELECTION                     |
          |------------------------------------------------------------|
          |    Type    |           J36            |        J37         |
          |------------+--------------------------+--------------------|
          |  80486SX   |    Pins 2 & 3 closed     |        Open        |
          |------------+--------------------------+--------------------|
          |  80487SX   | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed  |
          |------------+--------------------------+--------------------|
          |  80486DX   | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed  |
          |------------+--------------------------+--------------------|
          |    P24     | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed  |
          +------------------------------------------------------------+