PRECISION AMERICA, INC.
=======================

   SUPER 486 REV: D2

   Processor         80486SX/80486DX                              
   Processor Speed   20/25/33MHz                                  
   Chip Set          Unidentified                                 
   Max. Onboard DRAM 32MB                                         
   Cache             64/128/256/1024KB                            
   BIOS              AM/MR/Phoenix                                
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       4167                                         

<gopher://bitreich.org/I/th99/m/P-R/33231-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Speaker             |   JP1    | Turbo switch   |   JP10   |
   |---------------------+----------+----------------+----------|
   | Reset switch        |   JP2    | Turbo LED      |   JP11   |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   JP5    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP3   | Pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select              |  JP6   |    Open    |
   |   | monochrome/EGA                   |        |            |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select color        |  JP6   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU frequency select 1x          |  JP27  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU frequency select 2x          |  JP27  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Wait state select 0 wait states  |  JP32  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Wait state select 1 wait state   |  JP32  |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP33  | Pins 2 & 3 |
   |   | alter                            |        |   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     |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       17MB       |    (4) 256K x 9    |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       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      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     None      |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |    1MB     | (4) 128K x 8  | (4) 128K x 8  | (1) 128K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Size   |   JP22   |   JP23   |  JP24  |  JP25  |  JP26   |
   |----------+----------+----------+--------+--------+---------|
   |   64KB   |  1 & 2   |  1 & 2   | 1 & 2  | 1 & 2  |  Open   |
   |----------+----------+----------+--------+--------+---------|
   |  128KB   |  2 & 3   |  1 & 2   | 1 & 2  | 1 & 2  | Closed  |
   |----------+----------+----------+--------+--------+---------|
   |  256KB   |  2 & 3   |  2 & 3   | 1 & 2  | 1 & 2  |  Open   |
   |----------+----------+----------+--------+--------+---------|
   |   1MB    |  2 & 3   |  2 & 3   | 2 & 3  | 2 & 3  |  Open   |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             CACHE JUMPER CONFIGURATION (CON'T)             |
   |------------------------------------------------------------|
   |   Size   |   JP28   |   JP34   |  JP35   |  JP36  |  JP37  |
   |----------+----------+----------+---------+--------+--------|
   |   64KB   |  Closed  |  1 & 2   |  2 & 3  | 2 & 3  | 2 & 3  |
   |----------+----------+----------+---------+--------+--------|
   |  128KB   |   Open   |   Open   |  1 & 2  | 1 & 2  | 1 & 2  |
   |----------+----------+----------+---------+--------+--------|
   |  256KB   |  Closed  |  2 & 3   |  2 & 3  | 2 & 3  | 2 & 3  |
   |----------+----------+----------+---------+--------+--------|
   |   1MB    |  Closed  |  2 & 3   |  2 & 3  | 2 & 3  | 2 & 3  |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             CACHE JUMPER CONFIGURATION (CON'T)             |
   |------------------------------------------------------------|
   |   Size   |   JP38   |  JP39   |  JP40   |  JP41   |  JP42  |
   |----------+----------+---------+---------+---------+--------|
   |   64KB   |   Open   |  2 & 3  |  2 & 3  |  Open   | 2 & 3  |
   |----------+----------+---------+---------+---------+--------|
   |  128KB   |  Closed  |  Open   |  1 & 2  | Closed  | 2 & 3  |
   |----------+----------+---------+---------+---------+--------|
   |  256KB   |   Open   |  2 & 3  |  2 & 3  |  Open   | 2 & 3  |
   |----------+----------+---------+---------+---------+--------|
   |   1MB    |   Open   |  2 & 3  |  2 & 3  |  Open   | 2 & 3  |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |     Type     |    J12     |       JP13        |    JP14    |
   |--------------+------------+-------------------+------------|
   |   80486SX    |    Open    | Pins 2 & 3 closed |    Open    |
   |--------------+------------+-------------------+------------|
   |   80486DX    |   Closed   | Pins 1 & 2 closed |   Closed   |
   +------------------------------------------------------------+