AMERICAN DIGICOM CORPORATION
============================

   286E

   Processor             80286                                    
   Processor Speed       12/16/20MHz                              
   Chip Set              Suntac                                   
   Max. Onboard DRAM     5MB                                      
   Cache                 None                                     
   BIOS                  AMI                                      
   Dimensions            230mm x 220mm                            
   I/O Options           None                                     
   NPU Options           80287                                    

<gopher://bitreich.org/I/th99/m/A-B/30219-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   JP1    | Turbo LED        |   JP4    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |   JP2    | Turbo switch     |   JP5    |
   |-------------------+----------+------------------+----------|
   | Reset switch      |   JP3    | External battery |   JP18   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              |  Jumper   |  Position  |
   |-----------------------------------+-----------+------------|
   |   | NPU speed select CPU CLK/1    | JP7 & JP8 | pins 1 & 2 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | NPU speed select CPU CLK/3    | JP7 & JP8 | pins 2 & 3 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | Monitor type select color     |    JP9    |   Closed   |
   |---+-------------------------------+-----------+------------|
   |   | Monitor type select           |    JP9    |    Open    |
   |   | monochrome                    |           |            |
   |---+-------------------------------+-----------+------------|
   |>> | Parity check enabled          |   JP10    |   Closed   |
   |---+-------------------------------+-----------+------------|
   |   | Parity check disabled         |   JP10    |    Open    |
   |---+-------------------------------+-----------+------------|
   |>> | CPU speed select 16/20MHz     |   JP12    | pins 1 & 2 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | CPU speed select 12MHz        |   JP12    | pins 2 & 3 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |>> | CMOS memory normal operation  |   JP17    | pins 1 & 2 |
   |   |                               |           |   closed   |
   |---+-------------------------------+-----------+------------|
   |   | CMOS memory clear             |   JP17    | pins 2 & 3 |
   |   |                               |           |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Bank 0 | Parity | Bank 1 | Parity | Bank 2 | Bank  |
   |       |        | (P-0)  |        | (P-1)  |        |   3   |
   |-------+--------+--------+--------+--------+--------+-------|
   | 512KB |  (4)   |  (2)   |  NONE  |  NONE  |  NONE  | NONE  |
   |       | 44256  | 41256  |        |        |        |       |
   |-------+--------+--------+--------+--------+--------+-------|
   | 512KB |  NONE  |  NONE  |  NONE  |  NONE  |  (2)   | NONE  |
   |       |        |        |        |        | 256K x |       |
   |       |        |        |        |        |   9    |       |
   |-------+--------+--------+--------+--------+--------+-------|
   |  1MB  |  (4)   |  (2)   |  (4)   |  (2)   |  NONE  | NONE  |
   |       | 44256  | 41256  | 44256  | 41256  |        |       |
   |-------+--------+--------+--------+--------+--------+-------|
   |  1MB  |  NONE  |  NONE  |  NONE  |  NONE  |  (2)   |  (2)  |
   |       |        |        |        |        | 256K x | 256K  |
   |       |        |        |        |        |   9    |  x 9  |
   |-------+--------+--------+--------+--------+--------+-------|
   |  2MB  |  (4)   |  (2)   |  (4)   |  (2)   |  (2)   |  (2)  |
   |       | 44256  | 41256  | 44256  | 41256  | 256K x | 256K  |
   |       |        |        |        |        |   9    |  x 9  |
   |-------+--------+--------+--------+--------+--------+-------|
   |  2MB  |  NONE  |  NONE  |  NONE  |  NONE  | (2) 1M | NONE  |
   |       |        |        |        |        |  x 9   |       |
   |-------+--------+--------+--------+--------+--------+-------|
   |  3MB  |  (4)   |  (2)   |  (4)   |  (2)   | (2) 1M | NONE  |
   |       | 44256  | 41256  | 44256  | 41256  |  x 9   |       |
   |-------+--------+--------+--------+--------+--------+-------|
   |  4MB  |  NONE  |  NONE  |  NONE  |  NONE  | (2) 1M |  (2)  |
   |       |        |        |        |        |  x 9   | 1M x  |
   |       |        |        |        |        |        |   9   |
   |-------+--------+--------+--------+--------+--------+-------|
   |  5MB  |  (4)   |  (2)   |  (4)   |  (2)   | (2) 1M |  (2)  |
   |       | 44256  | 41256  | 44256  | 41256  |  x 9   | 1M x  |
   |       |        |        |        |        |        |   9   |
   |------------------------------------------------------------|
   | Note:Banks 2 & 3 are considered Banks 0 & 1, respectively, |
   | when filled without using DIP.                             |
   |                                                            |
   | However, they will be referred to throughout the text as   |
   | Banks 2 & 3 to avoid confusion.                            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   | Size  |    JP13     |    JP14    |    JP15    |    JP16    |
   |-------+-------------+------------+------------+------------|
   | 512KB | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 512KB | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  1MB  | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  1MB  | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  2MB  | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  2MB  | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  3MB  | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  4MB  | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   |  5MB  | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  NPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |      Speed       |        JP7         |        JP8         |
   |------------------+--------------------+--------------------|
   |      CLK/1       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      CLK/3       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+