DYNA MICRO, INC.
================

   MBA-386B-25

   Processor             80386DX                                  
   Processor Speed       25MHz                                    
   Chip Set              UMC                                      
   Max. Onboard DRAM     12MB                                     
   Cache                 None                                     
   BIOS                  AMI                                      
   Dimensions            330mm x 218mm                            
   I/O Options           None                                     
   NPU Options           80387/3167                               

<gopher://bitreich.org/I/th99/m/C-D/30417-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose        | Location | Purpose             | Location |
   |----------------+----------+---------------------+----------|
   | Speed display  |    J1    | Speaker             |    J5    |
   |----------------+----------+---------------------+----------|
   | Auxiliary      |    J2    | Power LED & keylock |    J6    |
   | keyboard       |          |                     |          |
   |----------------+----------+---------------------+----------|
   | Reset switch   | J3 & J14 | Turbo LED           |    J7    |
   |----------------+----------+---------------------+----------|
   | Turbo switch   | J4 & J13 | External battery    |   J11    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select monochrome   |   J8   |    open    |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select color        |   J8   |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU type select 3167 or none     |   J9   |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU type select 80387            |   J9   |    open    |
   |---+----------------------------------+--------+------------|
   |>> | Battery select internal          |  J12   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery select external          |  J12   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP6   | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP7   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
   |------------+---------------+---------------+---------------|
   |    1MB     | (4) 256K x 9  |     NONE      |     NONE      |
   |------------+---------------+---------------+---------------|
   |    2MB     | (4) 256K x 9  | (4) 256K x 9  |     NONE      |
   |------------+---------------+---------------+---------------|
   |    3MB     | (4) 256K x 9  | (4) 256K x 9  | (4) 256K x 9  |
   |------------+---------------+---------------+---------------|
   |    4MB     |  (4) 1M x 9   |     NONE      |     NONE      |
   |------------+---------------+---------------+---------------|
   |    8MB     |  (4) 1M x 9   |  (4) 1M x 9   |     NONE      |
   |------------+---------------+---------------+---------------|
   |    12MB    |  (4) 1M x 9   |  (4) 1M x 9   |  (4) 1M x 9   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |     Size     |     SW1/1     |    SW1/2     |    SW1/3     |
   |--------------+---------------+--------------+--------------|
   |     1MB      |      On       |      On      |      On      |
   |--------------+---------------+--------------+--------------|
   |     2MB      |      On       |     Off      |      On      |
   |--------------+---------------+--------------+--------------|
   |     3MB      |      On       |     Off      |     Off      |
   |--------------+---------------+--------------+--------------|
   |     4MB      |      Off      |      On      |      On      |
   |--------------+---------------+--------------+--------------|
   |     8MB      |      Off      |     Off      |      On      |
   |--------------+---------------+--------------+--------------|
   |     12MB     |      Off      |     Off      |     Off      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  DRAM SPEED CONFIGURATION                  |
   |------------------------------------------------------------|
   |     Speed     |    SW1/1     |    SW1/2     |    SW1/3     |
   |---------------+--------------+--------------+--------------|
   |     80ns      |      On      |      On      |      On      |
   |---------------+--------------+--------------+--------------|
   |     100ns     |      On      |     Off      |      On      |
   +------------------------------------------------------------+