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

   CH-486S-16/20/25/33H, CH-486-25/33H

   Processor              80486SX/80487SX/80486DX                 
   Processor Speed        16/20/25/33MHz                          
   Chip Set               OPTI                                    
   Max. Onboard DRAM      32MB                                    
   Cache                  None                                    
   BIOS                   AMI                                     
   Dimensions             330mm x 218mm                           
   I/O Options            None                                    
   NPU Options            80487SX                                 

<gopher://bitreich.org/I/th99/m/C-D/30623-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Turbo LED        |   CR1    | Power LED &       |   J20    |
   |                  |          | keylock           |          |
   |------------------+----------+-------------------+----------|
   | External battery |    J4    | Turbo switch      |   JP6    |
   |------------------+----------+-------------------+----------|
   | Speaker          |   J15    | Reset switch      |   SW1    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Monitor type select color      |  JP3   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select monochrome |  JP3   |     Open     |
   |---+--------------------------------+--------+--------------|
   |>> | CMOS memory normal operation   |  JP5   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CMOS memory clear              |  JP5   |  pins 1 & 2  |
   |   |                                |        |    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        |
   |------------------+--------------------+--------------------|
   |       5MB        |    (4) 256K x 9    |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |        JP1        |   JP2   |        JP4        |
   |----------+-------------------+---------+-------------------|
   | 80486SX  | pins 2 & 3 closed |  Open   |       Open        |
   |----------+-------------------+---------+-------------------|
   | 80487SX  | pins 1 & 2 closed | Closed  | pins 1 & 2 closed |
   |----------+-------------------+---------+-------------------|
   | 80486DX  | pins 1 & 2 closed | Closed  | pins 2 & 3 closed |
   +------------------------------------------------------------+