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

   SY-021

                                                                  
   Processor        80386DX/80486SX/80486DX                       
   Processor Speed  25/33/40/50MHz                                
   Chip Set         Intel                                         
   Max. Onboard     32MB                                          
   DRAM             
   Cache            64/256KB (on CPU/Cache card)                  
   BIOS             Intel                                         
   Dimensions       330mm x 218mm                                 
   I/O Options      32-bit external CPU/Cache card slot, bus      
                    mouse, floppy drive interface, parallel port, 
                    serial port                                   
   NPU Options      None                                          
                                                                  

<gopher://bitreich.org/I/th99/m/S-T/31018-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | 32-bit external   |   CN1    | Speaker          |   J18    |
   | CPU/Cache card    |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Bus mouse         |    J2    | Reset switch     |   J19    |
   |-------------------+----------+------------------+----------|
   | Serial port       |    J3    | External battery |   J20    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |    J5    | Turbo switch     |   J21    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |    J7    | Turbo LED        |   J22    |
   | interface         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   J17    |                  |          |
   | keylock           |          |                  |          |
   |------------------------------------------------------------|
   | Note:The Turbo switch and Turbo LED may not be present on  |
   | all board revisions.                                       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Floppy drive interface select    |   J6   |    Open    |
   |   | 1.44MB                           |        |            |
   |---+----------------------------------+--------+------------|
   |   | Floppy drive interface select    |   J6   | pins 1 & 2 |
   |   | 1.2MB                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Wait states select zero          |   J8   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Wait states select one           |   J8   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Posted write control enabled     |   J9   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Posted write control disabled    |   J9   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | 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   |
   |------------------------------------------------------------|
   | Note:Jumper JP3 and JP5 may not be present on all board    |
   | revisions.                                                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       4MB        |   (4) 256K x 36    |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |   (4) 256K x 36    |   (4) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |   (4) 512K x 36    |        NONE        |
   |------------------+--------------------+--------------------|
   |       12MB       |   (4) 512K x 36    |   (4) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       16MB       |   (4) 512K x 36    |   (4) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       16MB       |    (4) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |    (4) 1M x 36     |   (4) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       24MB       |    (4) 1M x 36     |   (4) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       32MB       |    (4) 1M x 36     |    (4) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (4) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       36MB       |    (4) 2M x 36     |   (4) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       40MB       |    (4) 2M x 36     |   (4) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       48MB       |    (4) 2M x 36     |    (4) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 2M x 36     |    (4) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 4M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       68MB       |    (4) 4M x 36     |   (4) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       72MB       |    (4) 4M x 36     |   (4) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       80MB       |    (4) 4M x 36     |    (4) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (4) 4M x 36     |    (4) 2M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (4) 4M x 36     |    (4) 4M x 36     |
   +------------------------------------------------------------+