TOP MICROSYSTEMS, INC.
======================

   286 MODEL-1010-200, VER 1.25

   Processor             80286                                    
   Processor Speed       12/16/20MHz                              
   Chip Set              C & T                                    
   Max. Onboard DRAM     2MB                                      
   Cache                 None                                     
   BIOS                  Phoenix                                  
   Dimensions            330mm x 218mm                            
   I/O Options           16-bit external memory card slot         
   NPU Options           80287                                    

<gopher://bitreich.org/I/th99/m/S-T/30970-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose      | Location | Purpose               | Location |
   |--------------+----------+-----------------------+----------|
   | Speaker      |    J1    | Power LED & keylock   |    J4    |
   |--------------+----------+-----------------------+----------|
   | Reset switch |    J2    | External battery      |    J6    |
   |--------------+----------+-----------------------+----------|
   | Turbo LED    |    J3    | 16-bit external       |    S1    |
   |              |          | memory card           |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select color        |   J5   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |   J5   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU is synchronous with CPU      |  J19   | pins 3 & 4 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU is synchronous with          |  J19   | pins 1 & 2 |
   |   | oscillator installed at U17      |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
   |--------+------------+------------+------------+------------|
   | 512KB  | (4) 44256  |    NONE    |    NONE    |    NONE    |
   |--------+------------+------------+------------+------------|
   | 640KB  | (4) 44256  |  (4) 4464  |    NONE    |    NONE    |
   |--------+------------+------------+------------+------------|
   |  1MB   | (4) 44256  | (4) 44256  |    NONE    |    NONE    |
   |--------+------------+------------+------------+------------|
   |  2MB   | (4) 44256  | (4) 44256  | (4) 44256  | (4) 44256  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM PARITY CONFIGURATION                  |
   |------------------------------------------------------------|
   |  Size  |    P 0     |    P 1     |    P 2     |    P 3     |
   |--------+------------+------------+------------+------------|
   | 512KB  | (2) 41256  |    NONE    |    NONE    |    NONE    |
   |--------+------------+------------+------------+------------|
   | 640KB  | (2) 41256  | (2) 41256  |  (2) 4164  |    NONE    |
   |--------+------------+------------+------------+------------|
   |  1MB   | (2) 41256  | (2) 41256  |    NONE    |    NONE    |
   |--------+------------+------------+------------+------------|
   |  2MB   | (2) 41256  | (2) 41256  | (2) 41256  | (2) 41256  |
   +------------------------------------------------------------+