(TXT) View Source
       
       # RECTRON ELECTRONIC ENTERPRISES, INC.
       
          REM 433WB
       
          Processor            80486DX                                   
          Processor Speed      33/50MHz                                  
          Chip Set             OPTI                                      
          Max. Onboard DRAM    32MB                                      
          Cache                64/256KB                                  
          BIOS                 AMI                                       
          Dimensions           331mm x 219mm                             
          I/O Options          32-bit external memory card slot          
          NPU Options          4167                                      
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | External battery  |   J10    | 32-bit external  |    S1    |
          |                   |          | memory card      |          |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   J23    | Reset switch     |   SW1    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |   J24    | Turbo switch     |   SW2    |
          |-------------------+----------+------------------+----------|
          | Turbo LED         |   JP12   |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Function             | Jumper |    Position     |
          |---------------------------------+--------+-----------------|
          | » | Battery select internal     |  JP1   |     Closed      |
          |---+-----------------------------+--------+-----------------|
          |   | Battery select external     |  JP1   |      Open       |
          |---+-----------------------------+--------+-----------------|
          | » | CMOS memory normal          |  JP2   |   pins 1 & 2    |
          |   | operation                   |        |     closed      |
          |---+-----------------------------+--------+-----------------|
          |   | CMOS memory clear           |  JP2   |   pins 2 & 3    |
          |   |                             |        |     closed      |
          |---+-----------------------------+--------+-----------------|
          | » | Bus speed select ATCLK/4    |  JP3   |     Closed      |
          |---+-----------------------------+--------+-----------------|
          |   | Bus speed select ATCLK/6    |  JP3   |      Open       |
          |---+-----------------------------+--------+-----------------|
          | » | CPU speed select iOSC       |  JP4   |   pins 1 & 2    |
          |   |                             |        |     closed      |
          |---+-----------------------------+--------+-----------------|
          |   | CPU speed select iOSC/2     |  JP4   |   pins 2 & 3    |
          |   |                             |        |     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) 1M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            64KB            |          (8) 8K x 8           |
          |----------------------------+-------------------------------|
          |           256KB            |          (8) 32K x 8          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size    |    JP8     |    JP9     |   JP10   |   JP11    |
          |-----------+------------+------------+----------+-----------|
          |   64KB    |    Open    |    Open    |   Open   |   Open    |
          |-----------+------------+------------+----------+-----------|
          |   256KB   |   Closed   |   Closed   |   Open   |  Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |  Type   |        JP5        |        JP6        |   JP7    |
          |---------+-------------------+-------------------+----------|
          | 80486SX |       Open        | pins 2 & 3 closed |   Open   |
          |---------+-------------------+-------------------+----------|
          | 80487SX | pins 1 & 2 closed | pins 1 & 2 closed |  Closed  |
          |---------+-------------------+-------------------+----------|
          | 80486DX | pins 2 & 3 closed | pins 1 & 2 closed |  Closed  |
          +------------------------------------------------------------+