(TXT) View Source
       
       # EFA CORPORATION
       
          ECA 34M50FL
       
          Processor       80386DX/CX486DLC/80486SX/80486DX/80486DX2      
          Processor Speed 16/20/25/33/40/50(internal)/50/66(internal)MHz 
          Chip Set        UMC                                            
          Max. Onboard    32MB                                           
          DRAM            
          Cache           64/128/256KB                                   
          BIOS            AMI                                            
          Dimensions      330mm x 218mm                                  
          I/O Options     32-bit VESA local bus slots (2)                
          NPU Options     80387DX                                        
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |    J1    | Turbo Switch      |   J13    |
          |------------------+----------+-------------------+----------|
          | Power LED &      |   J10    | Turbo LED         |   J14    |
          | keylock          |          |                   |          |
          |------------------+----------+-------------------+----------|
          | Speaker          |   J11    | Chassis fan power |   J15    |
          |------------------+----------+-------------------+----------|
          | Reset switch     |   J12    | 32-bit VESA Local | S1 & S2  |
          |                  |          | bus slots         |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CMOS memory normal operation     |   W1   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |   W1   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | On board battery enabled         |   W2   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | On board battery disabled        |   W2   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  W14   |    Open    |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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     |
          |------------------+--------------------+--------------------|
          |       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   |  Bank 1   |   TAG/U24   |    Dirty    |
          |       |            |           |             |   Bit/U37   |
          |-------+------------+-----------+-------------+-------------|
          | 64KB  | (4) 8K x 8 | (4) 8K x  | (1) 8K x 8  | (1) 16K x 8 |
          |       |            |     8     |             |             |
          |-------+------------+-----------+-------------+-------------|
          | 128KB | (4) 32K x  |   NONE    | (1) 8K x 8  | (1) 16K x 8 |
          |       |     8      |           |             |             |
          |-------+------------+-----------+-------------+-------------|
          | 256KB | (4) 32K x  | (4) 32K x | (1) 32K x 8 | (1) 16K x 8 |
          |       |     8      |     8     |             |             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size |  W5  |  W6  | W7  | W8  |  W9  | W10  | W11  | W12  |
          |------+------+------+-----+-----+------+------+------+------|
          | 64KB |1 & 2 |1 & 2 |1 & 2|Open | Open | Open | Open | Open |
          |------+------+------+-----+-----+------+------+------+------|
          |128KB |2 & 3 |1 & 2 |2 & 3|1 & 2| Open |Closed| Open |Closed|
          |------+------+------+-----+-----+------+------+------+------|
          |256KB |2 & 3 |2 & 3 |1 & 2|2 & 3|Closed|Closed|Closed|Closed|
          |------------------------------------------------------------|
          |Note:Pins designated should be in the closed position.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |    Type    | SW3/1 | SW3/2 | SW3/3 | SW3/4 | SW3/5 | SW3/6 |
          |------------+-------+-------+-------+-------+-------+-------|
          |  CX486DLC  |  Off  |  On   |  On   |  Off  |  Off  |  Off  |
          |------------+-------+-------+-------+-------+-------+-------|
          | 80486SX/20 |  Off  |  Off  |  Off  |  On   |  On   |  Off  |
          |------------+-------+-------+-------+-------+-------+-------|
          | 80486SX/25 |  Off  |  Off  |  Off  |  Off  |  On   |  Off  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486SX   |  Off  |  Off  |  Off  |  Off  |  Off  |  Off  |
          |   (PQFP)   |       |       |       |       |       |       |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX   |  Off  |  On   |  On   |  Off  |  Off  |  Off  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX   |  On   |  Off  |  Off  |  Off  |  Off  |  On   |
          |   (PQFP)   |       |       |       |       |       |       |
          |------------+-------+-------+-------+-------+-------+-------|
          |  ODP486SX  |  Off  |  On   |  On   |  Off  |  Off  |  Off  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX2  |  Off  |  On   |  On   |  Off  |  Off  |  Off  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CONT.)               |
          |------------------------------------------------------------|
          |        Type        |       Pins       |         J9         |
          |--------------------+------------------+--------------------|
          |      80486SX       |       168        | pins 1 & 2 closed  |
          |--------------------+------------------+--------------------|
          |  80486SX/80486DX2  |  168 Overdrive   | pins 1 & 2 closed  |
          |--------------------+------------------+--------------------|
          |      80486DX       |  168 Overdrive   | pins 2 & 3 closed  |
          |--------------------+------------------+--------------------|
          |      80486DX       |  169 Overdrive   | pins 1 & 2 closed  |
          |--------------------+------------------+--------------------|
          |  80486DX/80486DX2  |       168        | pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CONT.)               |
          |------------------------------------------------------------|
          |  Type  | SW2/1  | SW2/2  | SW2/3  | SW2/4  | SW2/5 | SW2/6 |
          |--------+--------+--------+--------+--------+-------+-------|
          | 80386  |   On   |   On   |   On   |   On   |  On   |  On   |
          |--------+--------+--------+--------+--------+-------+-------|
          | 80486  |  Off   |  Off   |  Off   |  Off   |  Off  |  Off  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   NPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |             Type              |        SW2/switch 7        |
          |-------------------------------+----------------------------|
          |        80387DX enabled        |             On             |
          |-------------------------------+----------------------------|
          |       80387DX disabled        |            Off             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CONT.)               |
          |------------------------------------------------------------|
          |           Type           |               J5                |
          |--------------------------+---------------------------------|
          |         80486SX          |        pins 2 & 3 closed        |
          |--------------------------+---------------------------------|
          |         80486DX          |        pins 2 & 3 closed        |
          |--------------------------+---------------------------------|
          |         ODP486SX         |        pins 1 & 2 closed        |
          |--------------------------+---------------------------------|
          |         80486DX2         |        pins 2 & 3 closed        |
          |------------------------------------------------------------|
          | Note:This only applies when the 80486SX/DX PQFP is         |
          | disabled.                                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |   CPU    |  Speed  | Osc.  | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80386DX  |  16MHz  | 16MHz |  On   |  On   |  On   |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80386DX  |  16MHz  | 16MHz |  On   |  On   |  Off  |  Off  |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80386DX  |  20MHz  | 20MHz |  On   |  On   |  On   |  Off  |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80386DX  |  33MHz  | 33MHz |  On   |  Off  |  On   |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80386DX  |  40MHz  | 80MHz |  On   |  Off  |  Off  |  Off  |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486SX  |  20MHz  | 40MHz |  Off  |  Off  |  On   |  Off  |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486SX  |  25MHz  | 25MHz |  On   |  On   |  Off  |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80487SX  |  20MHz  | 40MHz |  Off  |  Off  |  On   |  Off  |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80487SX  |  25MHz  | 25MHz |  On   |  On   |  Off  |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486DX  |  25MHz  | 25MHz |  On   |  On   |  Off  |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486DX  |  33MHz  | 33MHz |  On   |  Off  |  On   |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486DX  |  50MHz  | 50MHz |  Off  |  Off  |  Off  |  Off  |
          |----------+---------+-------+-------+-------+-------+-------|
          | ODP486SX | 50i MHz | 25MHz |  On   |  On   |  Off  |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | ODP486SX | 66i MHz | 33MHz |  On   |  Off  |  On   |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486DX2 | 50i MHz | 25MHz |  On   |  On   |  Off  |  On   |
          |----------+---------+-------+-------+-------+-------+-------|
          | 80486DX2 | 66i MHz | 33MHz |  On   |  Off  |  On   |  On   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          VESA WAIT STATE/BUS SPEED CONFIGURATION           |
          |------------------------------------------------------------|
          |  CPU speed  |  Wait states  |    J4    |   J6    |   J7    |
          |-------------+---------------+----------+---------+---------|
          | Auto detect |  Auto select  |  Closed  |  Open   | Closed  |
          |-------------+---------------+----------+---------+---------|
          |   £ 33MHz   | 0 wait states |  Closed  | Closed  |  Open   |
          |-------------+---------------+----------+---------+---------|
          |   > 33MHz   | 1 wait state  |   Open   | Closed  | Closed  |
          +------------------------------------------------------------+