EFA CORPORATION
===============

   486FLE2

   Processor   80486SX/ODP486SX/80486DX/80487SX/ODP486DX/80486DX2 
   Processor   16/20/25/33/50(internal)/50/66(internal)MHz        
   Speed       
   Chip Set    SIS                                                
   Max.        32MB                                               
   Onboard     
   DRAM        
   Cache       64/128/256KB                                       
   BIOS        AMI                                                
   Dimensions  330mm x 218mm                                      
   I/O Options 32-bit VESA local bus slots (2)                    
   NPU Options None                                               

<gopher://bitreich.org/I/th99/m/E-H/31738-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Power LED &   |   JP4    | Turbo switch         |   JP9    |
   | keylock       |          |                      |          |
   |---------------+----------+----------------------+----------|
   | Speaker       |   JP7    | Turbo LED            |   JP22   |
   |---------------+----------+----------------------+----------|
   | Reset switch  |   JP8    | 32-bit VESA Local    | S1 & S2  |
   |               |          | bus slots            |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |   | Monitor type select color        |  JP1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP1   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP5   | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP6   | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP21  |   Closed   |
   |   | alter                            |        |            |
   |------------------------------------------------------------|
   | Note:The exact locations of JP1 & JP21 are unknown.        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 512K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |    (4) 512K x 9    |    (4) 512K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 2M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 2M x 9     |     (4) 2M x 9     |
   |------------------+--------------------+--------------------|
   |       18MB       |    (4) 512K x 9    |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |  JP11  |  JP12  |  JP13  |  JP14  |  JP15  | JP16  |
   |-------+--------+--------+--------+--------+--------+-------|
   | 64KB  | pins 2 | pins 1 | pins 1 | pins 1 | pins 1 | pins  |
   |       |  & 3   |  & 2   |  & 2   |  & 2   |  & 2   | 1 & 2 |
   |-------+--------+--------+--------+--------+--------+-------|
   | 128KB | pins 1 | pins 2 | pins 1 | pins 2 | pins 1 | pins  |
   |       |  & 2   |  & 3   |  & 2   |  & 3   |  & 2   | 2 & 3 |
   |-------+--------+--------+--------+--------+--------+-------|
   | 256KB | pins 4 | pins 2 | pins 2 | pins 2 | pins 2 | pins  |
   |       |  & 5   |  & 3   |  & 3   |  & 3   |  & 3   | 2 & 3 |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |     Bank 0     |     Bank 1     |     TAG     |
   |------------+----------------+----------------+-------------|
   |    64KB    |   (4) 8K x 8   |   (4) 8K x 8   | (1) 8K x 4  |
   |------------+----------------+----------------+-------------|
   |   128KB    |  (4) 32K x 8   |      NONE      | (1) 8K x 4  |
   |------------+----------------+----------------+-------------|
   |   128KB    |  (4) 32K x 8   |      NONE      | (1) 32K x 8 |
   |------------+----------------+----------------+-------------|
   |   256KB    |  (4) 32K x 8   |  (4) 32K x 8   | (1) 32K x 8 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Speed   |  SW2/switch 1  | SW2/switch 2  | SW2/switch 3  |
   |-----------+----------------+---------------+---------------|
   |   16MHz   |       On       |      Off      |      On       |
   |-----------+----------------+---------------+---------------|
   |   20MHz   |      Off       |      Off      |      On       |
   |-----------+----------------+---------------+---------------|
   |   25MHz   |       On       |      On       |      Off      |
   |-----------+----------------+---------------+---------------|
   |   33MHz   |      Off       |      On       |      Off      |
   |-----------+----------------+---------------+---------------|
   |  50i MHz  |       On       |      On       |      Off      |
   |-----------+----------------+---------------+---------------|
   |   50MHz   |      Off       |      Off      |      Off      |
   |-----------+----------------+---------------+---------------|
   |  66i MHz  |      Off       |      On       |      Off      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   | JP3  | JP24 |JP25 |SW3/1|SW3/2|SW3/3|SW3/4|SW3/5|
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | 80486SX  | N/A  | N/A  | N/A | Off | Off | Off | On  | Off |
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | 80486SX  | Open | Open |1 & 2| N/A | N/A | N/A | N/A | N/A |
   |  (PQFP)  |      |      |     |     |     |     |     |     |
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | ODP486SX | N/A  | N/A  | N/A | On  | Off | On  | Off | On  |
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | 80486DX  | N/A  | N/A  | N/A | On  | On  | Off | Off | On  |
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | 80486DX  |Closed|Closed| N/A | N/A | N/A | N/A | N/A | N/A |
   |  (PQFP)  |      |      |     |     |     |     |     |     |
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | ODP486DX | N/A  | N/A  | N/A | On  | Off | On  | Off | On  |
   |----------+------+------+-----+-----+-----+-----+-----+-----|
   | 80486DX2 | N/A  | N/A  | N/A | On  | On  | Off | Off | On  |
   |------------------------------------------------------------|
   |Note:Pins designated should be in the closed position.      |
   +------------------------------------------------------------+