CHICONY, INC.
=============

   CH-48633C

   Processor             80486SX/80487SX/80486DX                  
   Processor Speed       20/25/33MHz                              
   Chip Set              OPTI                                     
   Max. Onboard DRAM     32MB                                     
   Cache                 64/128/256KB                             
   BIOS                  AMI                                      
   Dimensions            330mm x 218mm                            
   I/O Options           None                                     
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/C-D/30530-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J3    | External battery |   J11    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J4    | Turbo LED        |   JP1    |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |    J5    | Reset switch     |    S6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP1   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP9   |    Open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CPU speed select iOSC/2          |  JP10  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU speed select iOSC/1          |  JP10  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Bank 0  | Bank 1  |     TAG      |  TAG   |  TAG   |
   |       |         |         |  (U34,U36)   | (U40)  | (U41)  |
   |-------+---------+---------+--------------+--------+--------|
   | 64KB  | (4) 8K  | (4) 8K  | (2) 64K x 1  | (1) 8K |  NONE  |
   |       |   x 8   |   x 8   |              |  x 8   |        |
   |-------+---------+---------+--------------+--------+--------|
   | 128KB | (4) 32K |  NONE   | (2) 64K x 1  | (1) 8K |  NONE  |
   |       |   x 8   |         |              |  x 8   |        |
   |-------+---------+---------+--------------+--------+--------|
   | 256KB | (4) 32K | (4) 32K | (2) 64K x 1  | (1) 8K | (1) 8K |
   |       |   x 8   |   x 8   |              |  x 8   |  x 8   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size   |   JP2    |   JP4    |  JP5   |   JP7   |   JP8   |
   |---------+----------+----------+--------+---------+---------|
   |  64KB   |   Open   |   Open   | 2 & 3  |  Open   |  Open   |
   |---------+----------+----------+--------+---------+---------|
   |  128KB  |  Closed  |   Open   | 1 & 2  |  Open   | Closed  |
   |---------+----------+----------+--------+---------+---------|
   |  256KB  |  Closed  |  Closed  | 2 & 3  | Closed  | Closed  |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |  Type   |    JP11    |          JP12          |    JP13    |
   |---------+------------+------------------------+------------|
   | 80486SX | pins 2 & 3 |   pins 2 & 3 closed    | pins 1 & 2 |
   |         |   closed   |                        |   closed   |
   |---------+------------+------------------------+------------|
   | 80487SX | pins 2 & 3 |  pins 1 & 2 and 3 & 4  | pins 1 & 2 |
   |         |   closed   |         closed         |   closed   |
   |---------+------------+------------------------+------------|
   | 80486DX | pins 1 & 2 |  pins 1 & 2 and 3 & 4  | pins 2 & 3 |
   |         |   closed   |         closed         |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |        Type        |        JP14        |       JP15       |
   |--------------------+--------------------+------------------|
   |       25MHz        |        Open        |       Open       |
   |--------------------+--------------------+------------------|
   |       33MHz        |       Closed       |       Open       |
   +------------------------------------------------------------+