(TXT) View Source
       
       # ZYTEX COMPUTERS, INC.
       
          486-33/50 CACHE
       
          Processor             80486DX                                  
          Processor Speed       33/50MHz                                 
          Chip Set              OPTI                                     
          Max. Onboard DRAM     64MB                                     
          Cache                 64/128/256/512KB                         
          BIOS                  AMI                                      
          Dimensions            330mm x 266mm                            
          I/O Options           None                                     
          NPU Options           4167                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | External battery    |    J3    | Turbo LED      |   JP13   |
          |---------------------+----------+----------------+----------|
          | Power LED & keylock |   J21    | Turbo switch   |   SW1    |
          |---------------------+----------+----------------+----------|
          | Speaker             |   J22    | Reset switch   |   SW2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Jumper |   Position   |
          |------------------------------------+--------+--------------|
          | » | CMOS memory normal operation   |  JP1   |  pins 2 & 3  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | CMOS memory clear              |  JP1   |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          | » | Bus speed select CLKI/4        |  JP2   |     Open     |
          |---+--------------------------------+--------+--------------|
          |   | Bus speed select CLKI/6        |  JP2   |    Closed    |
          |---+--------------------------------+--------+--------------|
          | » | Monitor type select monochrome |  JP3   |     Open     |
          |---+--------------------------------+--------+--------------|
          |   | Monitor type select color      |  JP3   |    Closed    |
          |---+--------------------------------+--------+--------------|
          | » | CPU speed select iOSC          |  JP12  |  pins 1 & 2  |
          |   |                                |        |    closed    |
          |---+--------------------------------+--------+--------------|
          |   | CPU speed select iOSC/2        |  JP12  |  pins 2 & 3  |
          |   |                                |        |    closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 1MB  | (4) 256K x  |    NONE     |    NONE    |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (4) 256K x  | (4) 256K x  |    NONE    |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (4) 1M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 5MB  | (4) 256K x  | (4) 1 M x 9 |    NONE    |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 6MB  | (4) 256K x  | (4) 256K x  | (4) 1M x 9 |    NONE    |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (4) 1M x 9  | (4) 1M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 9MB  | (4) 256K x  | (4) 1M x 9  | (4) 1M x 9 |    NONE    |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 10MB | (4) 256K x  | (4) 256K x  | (4) 1M x 9 | (4) 1M x 9 |
          |      |      9      |      9      |            |            |
          |------+-------------+-------------+------------+------------|
          | 12MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 13MB | (4) 256K x  | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |      |      9      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 16MB | (4) 4M x 9  |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 20MB | (4) 1M x 9  | (4) 4M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (4) 1M x 9  | (4) 1M x 9  | (4) 4M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 28MB | (4) 1M x 9  | (4) 1M x 9  | (4) 1M x 9 | (4) 4M x 9 |
          |------+-------------+-------------+------------+------------|
          | 32MB | (4) 4M x 9  | (4) 4M x 9  |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 36MB | (4) 4M x 9  | (4) 4M x 9  | (4) 1M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 40MB | (4) 1M x 9  | (4) 1M x 9  | (4) 4M x 9 | (4) 4M x 9 |
          |------+-------------+-------------+------------+------------|
          | 48MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 52MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 | (4) 1M x 9 |
          |------+-------------+-------------+------------+------------|
          | 64MB | (4) 4M x 9  | (4) 4M x 9  | (4) 4M x 9 | (4) 4M x 9 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (8) 8K x 8   |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (8) 8K x 8   |  (8) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (8) 32K x 8  |     NONE      |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |   512KB    |  (8) 32K x 8  |  (8) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |  JP7   |  JP8   |  JP9   |  JP10  |      JP11      |
          |-------+--------+--------+--------+--------+----------------|
          | 64KB  |  Open  |  Open  |  Open  |  Open  |   pins 2 & 3   |
          |       |        |        |        |        |     closed     |
          |-------+--------+--------+--------+--------+----------------|
          | 128KB |  Open  |  Open  | Closed | Closed |   pins 2 & 3   |
          |       |        |        |        |        |     closed     |
          |-------+--------+--------+--------+--------+----------------|
          | 256KB |  Open  | Closed | Closed | Closed |   pins 2 & 3   |
          |       |        |        |        |        |     closed     |
          |-------+--------+--------+--------+--------+----------------|
          | 512KB | Closed | Closed | Closed | Closed |   pins 1 & 2   |
          |       |        |        |        |        |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |   JP4   |        JP5        |        JP6        |
          |----------+---------+-------------------+-------------------|
          | 80486SX  |  Open   | pins 2 & 3 closed |        N/A        |
          |----------+---------+-------------------+-------------------|
          | 80487SX  | Closed  | pins 1 & 2 closed | pins 1 & 2 closed |
          |----------+---------+-------------------+-------------------|
          | 80486DX  | Closed  | pins 1 & 2 closed | pins 2 & 3 closed |
          +------------------------------------------------------------+