SOYO COMPUTER CO., LTD.
=======================

   SY-19J/K

   Processor             80386DX/CX486DLC                         
   Processor Speed       33/40MHz                                 
   Chip Set              SIS                                      
   Max. Onboard DRAM     32MB                                     
   Cache                 64/128/256KB                             
   BIOS                  AMI                                      
   Dimensions            220mm x 220mm                            
   I/O Options           None                                     
   NPU Options           80387/3167                               

<gopher://bitreich.org/I/th99/m/S-T/31349-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   J17    | External battery |   J20    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |   J18    | Turbo switch     |   J21    |
   |-------------------+----------+------------------+----------|
   | Reset switch      |   J19    | Turbo LED        |   J22    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Monitor type select monochrome |  JP3   |     Open     |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select color      |  JP3   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |>> | CMOS memory normal operation   |  JP5   |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CMOS memory clear              |  JP5   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       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        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Size   |    J2    |    J3    |   J4    |   J5   |   J6   |
   |----------+----------+----------+---------+--------+--------|
   |   64KB   |  1 & 2   |  1 & 2   |  2 & 3  | 2 & 3  | 1 & 2  |
   |----------+----------+----------+---------+--------+--------|
   |  128KB   |  2 & 3   |  1 & 2   |  1 & 2  | 1 & 2  | 2 & 3  |
   |----------+----------+----------+---------+--------+--------|
   |  256KB   |  2 & 3   |  2 & 3   |  2 & 3  | 2 & 3  | 2 & 3  |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |      Type      |    OSC1    |   JP24   |  JP25   |  JP26   |
   |----------------+------------+----------+---------+---------|
   | 80386DX-33MHz  |  66.66MHz  |  Closed  | Closed  |  Open   |
   |----------------+------------+----------+---------+---------|
   | CX486DLC-33MHz |  66.66MHz  |  Closed  | Closed  |  Open   |
   |----------------+------------+----------+---------+---------|
   | 80386DX-40MHz  |   80MHz    |   Open   |  Open   | Closed  |
   |----------------+------------+----------+---------+---------|
   | CX486DLC-40MHz |   80MHz    |   Open   |  Open   | Closed  |
   +------------------------------------------------------------+