(TXT) View Source
       
       # FREE COMPUTER TECHNOLOGY, INC.
       
          80486ISA
       
          Processor             80486SX/80487SX/80486DX                  
          Processor Speed       20/25/33/50MHz                           
          Chip Set              OPTI                                     
          Max. Onboard DRAM     64MB                                     
          Cache                 64/128/256/512KB                         
          BIOS                  AMI                                      
          Dimensions            355mm x 304mm                            
          I/O Options           None                                     
          NPU Options           4167                                     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | External battery    |    J2    | Turbo LED      |   JP10   |
          |---------------------+----------+----------------+----------|
          | Power LED & keylock |   J21    | Reset switch   |   SW1    |
          |---------------------+----------+----------------+----------|
          | Speaker             |   J22    | Turbo switch   |   SW2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Monitor type select monochrome   |  JP1   |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select color        |  JP1   |    open    |
          |---+----------------------------------+--------+------------|
          | » | Power good signal detect from    | JP400  | pins 1 & 2 |
          |   | power supply                     |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Power good signal detect from    | JP400  | pins 2 & 3 |
          |   | board                            |        |   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) 1M 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) 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) 1M x 9  | (4) 4M x 9  | (4) 4M 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) 1M x 9  | (4) 4M x 9  | (4) 4M x 9 | (4) 4M 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   |   JP4    |   JP5    |   JP6   |   JP8   |  JP9   |
          |---------+----------+----------+---------+---------+--------|
          |  64KB   |   Open   |   Open   |  Open   |  Open   | 2 & 3  |
          |---------+----------+----------+---------+---------+--------|
          |  128KB  |   Open   |   Open   | Closed  | Closed  | 2 & 3  |
          |---------+----------+----------+---------+---------+--------|
          |  256KB  |   Open   |  Closed  | Closed  | Closed  | 2 & 3  |
          |---------+----------+----------+---------+---------+--------|
          |  512KB  |  Closed  |  Closed  | Closed  | Closed  | 1 & 2  |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |       JP100       |  JP101  |       JP102       |
          |----------+-------------------+---------+-------------------|
          | 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 |
          +------------------------------------------------------------+