(TXT) View Source
       
       # CHAINTECH COMPUTER COMPANY, LTD.
       
          425UXL/433UXL/425UCL/433UCL
       
          Processor         80486SX/80487SX/80486DX/ODP486SX/80486DX2    
          Processor Speed   25/33/40/50(internal)/66(internal)MHz        
          Chip Set          USAI                                         
          Max. Onboard DRAM 32MB                                         
          Cache             64/128/256KB                                 
          BIOS              AMI                                          
          Dimensions        254mm x 220mm                                
          I/O Options       32-bit VESA local bus slots (2)              
          NPU Options       None                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose       | Location | Purpose              | Location |
          |---------------+----------+----------------------+----------|
          | Power LED &   |    J2    | External battery     |    J7    |
          | keylock       |          |                      |          |
          |---------------+----------+----------------------+----------|
          | Turbo switch  |    J4    | Speaker              |   J100   |
          |---------------+----------+----------------------+----------|
          | Turbo LED     |    J5    | 32-bit VESA local    |  SL1 &   |
          |               |          | bus slots            |   SL2    |
          |---------------+----------+----------------------+----------|
          | Reset switch  |    J6    |                      |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Jumper  | Position |
          |---------------------------------------+---------+----------|
          | » | Turbo enabled                     |   J4    |  Closed  |
          |---+-----------------------------------+---------+----------|
          |   | Turbo disabled                    |   J4    |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |  JMP3   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |  JMP4   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |  JMP5   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |  JMP7   |   Open   |
          |---+-----------------------------------+---------+----------|
          | » | Factory configured - do not alter |  JMP10  |   Open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       1MB        |    (4) 256K x 9    |        NONE        |
          |------------------+--------------------+--------------------|
          |       1MB        |        NONE        |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       4MB        |        NONE        |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       16MB       |        NONE        |     (4) 4M 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) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |              JMP1              |       JMP8        |
          |-------+--------------------------------+-------------------|
          | 64KB  |    pins 1 & 2, 4 & 5, 7 & 8    | pins 1 & 2, 4 & 5 |
          |       |             closed             |      closed       |
          |-------+--------------------------------+-------------------|
          | 128KB |    pins 2 & 3, 4 & 5, 8 & 9    | pins 2 & 3, 4 & 5 |
          |       |             closed             |      closed       |
          |-------+--------------------------------+-------------------|
          | 256KB |    pins 2 & 3, 5 & 6, 8 & 9    | pins 2 & 3, 5 & 6 |
          |       |             closed             |      closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |            Type            |             JMP2              |
          |----------------------------+-------------------------------|
          |          80486SX           |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |          ODP486SX          |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |          80487SX           |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |          80486DX           |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |          80486DX2          |       pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  VESA SPEED CONFIGURATION                  |
          |------------------------------------------------------------|
          |           Speed            |             JMP6              |
          |----------------------------+-------------------------------|
          |           33MHz            |   pins 1 & 4, 3 & 6 closed    |
          |----------------------------+-------------------------------|
          |           40MHz            |   pins 1 & 4, 2 & 5 closed    |
          |----------------------------+-------------------------------|
          |           50MHz            |       pins 1 & 4 closed       |
          +------------------------------------------------------------+