(TXT) View Source
       
       # AMERICAN MEGATRENDS, INC.
       
          MARK IV AT Convertible Screamer
       
          Processor        80386DX/80486DX                               
          Processor Speed  25/33/40MHz                                   
          Chip Set         C & T                                         
          Max. Onboard     64MB                                          
          DRAM             
          Cache            64/256KB                                      
          BIOS             AMI                                           
          Dimensions       355mm x 289mm                                 
          I/O Options      32-bit external CPU/NPU card slot             
          NPU Options      80387/3167/4167 (on 32-bit external CPU/NPU   
                           card)                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose         | Location |
          |--------------------+----------+-----------------+----------|
          | 32-bit external    |   CN1    | Turbo LED       |    J6    |
          | CPU/NPU card       |          |                 |          |
          |--------------------+----------+-----------------+----------|
          | External battery   |    J1    | Power LED &     |    J7    |
          |                    |          | keylock         |          |
          |--------------------+----------+-----------------+----------|
          | Speaker            |    J4    | Diagnostic LED  |    J8    |
          |--------------------+----------+-----------------+----------|
          | Reset switch       |    J5    | Auxiliary       |    JX    |
          |                    |          | keyboard        |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Function             | Jumper/Switch | Position |
          |---------------------------------+---------------+----------|
          | » | Factory configured - do not |      J2       |   Open   |
          |   | alter                       |               |          |
          |---+-----------------------------+---------------+----------|
          | » | Auxiliary BIOS disabled     |      J9       |   Open   |
          |---+-----------------------------+---------------+----------|
          |   | Auxiliary BIOS enabled      |      J9       |  Closed  |
          |   | (27512 EPROM installed at   |               |          |
          |   | U1)                         |               |          |
          |---+-----------------------------+---------------+----------|
          | » | Factory configured - do not |     SW1/1     |   Off    |
          |   | alter                       |               |          |
          |---+-----------------------------+---------------+----------|
          | » | Monitor type select         |     SW1/2     |   Off    |
          |   | monochrome                  |               |          |
          |---+-----------------------------+---------------+----------|
          |   | Monitor type select color   |     SW1/2     |    On    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 1MB  | (4) 256K x  |    NONE     |    NONE    |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (4) 256K x  | (4) 256K x  |    NONE    |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (4) 1M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (4) 1M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (4) 256K x  | (4) 256K x  | (4) 1M x 9 |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (4) 1M x 9  | (4) 1M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (4) 1M x 9  | (4) 1M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 10MB | (4) 256K x  | (4) 256K x  | (4) 1M x 9 | (4) 1M x 9 |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 12MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 12MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 4M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 18MB | (4) 256K x  | (4) 256K x  | (4) 4M x 9 |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 24MB | (4) 1M x 9  | (4) 1M x 9  | (4) 4M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (4) 1M x 9  | (4) 1M x 9  | (4) 4M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (4) 4M x 9  | (4) 4M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 34MB | (4) 256K x  | (4) 256K x  | (4) 4M x 9 | (4) 4M x 9 |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 36MB | (4) 4M x 9  | (4) 4M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 40MB | (4) 1M x 9  | (4) 1M x 9  | (4) 4M x 9 | (4) 4M x 9 |
          |------+-------------+-------------+------------+------------|
          | 40MB | (4) 1M x 9  | (4) 1M x 9  | (4) 4M x 9 | (4) 4M x 9 |
          |------+-------------+-------------+------------+------------|
          | 40MB | (4) 4M x 9  | (4) 4M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 48MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 64MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 | (4) 4M x 9 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          |            Size             |              J3              |
          |-----------------------------+------------------------------|
          |             1MB             |            closed            |
          |-----------------------------+------------------------------|
          |             2MB             |            closed            |
          |-----------------------------+------------------------------|
          |             4MB             |            closed            |
          |-----------------------------+------------------------------|
          |             4MB             |             open             |
          |-----------------------------+------------------------------|
          |             6MB             |            closed            |
          |-----------------------------+------------------------------|
          |             8MB             |            closed            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             DRAM JUMPER CONFIGURATION (CON'T)              |
          |------------------------------------------------------------|
          |           Size           |               J3                |
          |--------------------------+---------------------------------|
          |           8MB            |              open               |
          |--------------------------+---------------------------------|
          |           10MB           |             closed              |
          |--------------------------+---------------------------------|
          |           12MB           |             closed              |
          |--------------------------+---------------------------------|
          |           12MB           |              Open               |
          |--------------------------+---------------------------------|
          |           16MB           |             Closed              |
          |--------------------------+---------------------------------|
          |           16MB           |              Open               |
          |--------------------------+---------------------------------|
          |           16MB           |              Open               |
          |--------------------------+---------------------------------|
          |           18MB           |             Closed              |
          |--------------------------+---------------------------------|
          |           24MB           |             Closed              |
          |--------------------------+---------------------------------|
          |           24MB           |              Open               |
          |--------------------------+---------------------------------|
          |           32MB           |              Open               |
          |--------------------------+---------------------------------|
          |           34MB           |             Closed              |
          |--------------------------+---------------------------------|
          |           36MB           |              Open               |
          |--------------------------+---------------------------------|
          |           40MB           |             Closed              |
          |--------------------------+---------------------------------|
          |           40MB           |              Open               |
          |--------------------------+---------------------------------|
          |           40MB           |              Open               |
          |--------------------------+---------------------------------|
          |           48MB           |              Open               |
          |--------------------------+---------------------------------|
          |           64MB           |              Open               |
          |------------------------------------------------------------|
          | Note:If jumper J3 is open, then PAL M00B2411 must be       |
          | installed at U68 (factory default).                        |
          |                                                            |
          | If jumper J3 is closed, then PAL M01B2411 must be          |
          | installed at U68.                                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            64KB            |          (8) 8K x 8           |
          |----------------------------+-------------------------------|
          |           256KB            |          (8) 32K x 8          |
          +------------------------------------------------------------+