AMERICAN MEGATRENDS, INC.
=========================

   MARK V BABY SCREAMER

   Processor        80386DX                                       
   Processor Speed  25/33/40MHz                                   
   Chip Set         AMI                                           
   Max. Onboard     32MB                                          
   DRAM             
   Cache            64/256KB                                      
   BIOS             AMI                                           
   Dimensions       330mm x 218mm                                 
   I/O Options      Floppy drive interface, IDE interface,        
                    parallel port, serial ports (2)               
   NPU Options      80387/3167                                    

<gopher://bitreich.org/I/th99/m/A-B/30956-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | IDE interface LED |    J1    | Turbo switch     |   J38    |
   |-------------------+----------+------------------+----------|
   | External battery  |    J2    | Serial port 2    |    P1    |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   J10    | Serial port 1    |    P4    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |   J11    | Parallel port    |    P5    |
   |-------------------+----------+------------------+----------|
   | Reset switch      |   J12    | Floppy interface |    P6    |
   |-------------------+----------+------------------+----------|
   | Diagnostic LED    |   J13    | IDE interface    |    P7    |
   |-------------------+----------+------------------+----------|
   | Turbo LED         |   J15    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | ROM access select 0 wait  |      J14      |   Closed   |
   |   | state                     |               |            |
   |---+---------------------------+---------------+------------|
   |   | ROM access select 1 wait  |      J14      |    Open    |
   |   | state                     |               |            |
   |---+---------------------------+---------------+------------|
   |>> | BIOS type select 27256    |      J18      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | BIOS type select 27512    |      J18      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Serial port COM2 select   |      J21      | pins 2 & 3 |
   |   | IRQ3                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Serial port COM2 select   |      J21      | pins 1 & 2 |
   |   | IRQ4                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Serial port COM1 select   |      J22      | pins 2 & 3 |
   |   | IRQ4                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Serial port COM1 select   |      J22      | pins 1 & 2 |
   |   | IRQ3                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Parallel port IRQ select  |      J23      | pins 2 & 3 |
   |   | IRQ7                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Parallel port IRQ select  |      J23      | pins 1 & 2 |
   |   | IRQ5                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Segment C800 shadow       |      J36      | pins 2 & 3 |
   |   | enabled                   |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Segment C800 shadow       |      J36      | pins 1 & 2 |
   |   | disabled                  |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/1     |    Off     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select       |     SW1/2     |    Off     |
   |   | monochrome                |               |            |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color |     SW1/2     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | Video shadow enabled      |     SW1/3     |     On     |
   |---+---------------------------+---------------+------------|
   |   | Video shadow disabled     |     SW1/3     |    Off     |
   |---+---------------------------+---------------+------------|
   |>> | ROM BIOS shadow enabled   |     SW1/4     |     On     |
   |---+---------------------------+---------------+------------|
   |   | ROM BIOS shadow disabled  |     SW1/4     |    Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |     Size     |        Bank 1        |        Bank 2        |
   |--------------+----------------------+----------------------|
   |     1MB      |     (4) 256K x 9     |         NONE         |
   |--------------+----------------------+----------------------|
   |     2MB      |     (4) 256K x 9     |     (4) 256K x 9     |
   |--------------+----------------------+----------------------|
   |     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      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              DRAM JUMPER/SWITCH CONFIGURATION              |
   |------------------------------------------------------------|
   |  Size  |   J4   |   J5   | SW1/5  | SW1/6  | SW1/7 | SW1/8 |
   |--------+--------+--------+--------+--------+-------+-------|
   |  1MB   | 2 & 3  | 2 & 3  |   On   |   On   |  On   |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  2MB   | 2 & 3  | 2 & 3  |   On   |  Off   |  On   |  On   |
   |--------+--------+--------+--------+--------+-------+-------|
   |  4MB   | 2 & 3  | 1 & 2  |   On   |   On   |  On   |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  8MB   | 2 & 3  | 1 & 2  |   On   |  Off   |  On   |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  16MB  | 1 & 2  | 1 & 2  |   On   |   On   |  Off  |  Off  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  32MB  | 1 & 2  | 1 & 2  |   On   |  Off   |  Off  |  Off  |
   |------------------------------------------------------------|
   | Note : Pins designated should be in the closed position.   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |   TAG (U32)   |   TAG (U38)   |
   |------------+---------------+---------------+---------------|
   |    64KB    | (10) 16K x 4  |  (1) 16K x 4  |     NONE      |
   |------------+---------------+---------------+---------------|
   |   256KB    | (10) 64K x 4  |     NONE      |  (1) 64K x 4  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size   |        J19        |        J20        |   J32    |
   |---------+-------------------+-------------------+----------|
   |  64KB   | pins 2 & 3 closed | pins 2 & 3 closed |   Open   |
   |---------+-------------------+-------------------+----------|
   |  256KB  | pins 1 & 2 closed | pins 1 & 2 closed |  Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |       Speed       |        J35         |        J37        |
   |-------------------+--------------------+-------------------|
   |       25MHz       | pins 2 & 3 closed  |       Open        |
   |-------------------+--------------------+-------------------|
   |       33MHz       | pins 2 & 3 closed  |       Open        |
   |-------------------+--------------------+-------------------|
   |       40MHz       | pins 1 & 2 closed  |      Closed       |
   +------------------------------------------------------------+