(TXT) View Source
       
       # EFA CORPORATION
       
          4MHL3S
       
          Processor         CX486SX/80486SX/CX486DX/80486DX/80486DX2     
          Processor Speed   20/25/33/40/50(internal)/50/66(internal)MHz  
          Chip Set          UMC                                          
          Max. Onboard DRAM 64MB                                         
          Cache             32/64/128/256KB                              
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          I/O Options       32-bit VESA local bus slots (3)              
          NPU Options       None                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |   JP21   | Reset switch      |   JP26   |
          |------------------+----------+-------------------+----------|
          | Power LED &      |   JP22   | Green PC          |   JP28   |
          | keylock          |          | connector         |          |
          |------------------+----------+-------------------+----------|
          | Speaker          |   JP23   | 32-bit VESA Local |    S1    |
          |                  |          | bus slot          |          |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |   JP24   | 32-bit VESA Local |    S2    |
          |                  |          | bus slot          |          |
          |------------------+----------+-------------------+----------|
          | Turbo switch     |   JP25   | 32-bit VESA Local |    S3    |
          |                  |          | bus slot          |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          |   | External battery enabled         |  JP1   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Internal battery enabled         |  JP1   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | CPU CX486SX & CX487SX enabled    |  JP6   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CPU CX486SX & CX487SX disabled   |  JP6   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Trident 9000 video card not      |  JP8   | pins 1 & 2 |
          |   | installed                        |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Trident 9000 video card          |  JP8   | pins 2 & 3 |
          |   | installed                        |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | External green card enabled      |  JP10  | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | External green card disabled     |  JP10  | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP13  | pins 1 & 2 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | 32K x 8 TAG enabled              |  JP27  | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | 16K x 8 TAG enabled              |  JP27  | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP29  | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP30  | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP31  |   Closed   |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    1MB     | (4) 256K x 9  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    2MB     | (4) 256K x 9  | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    2MB     | (4) 256K x 9  |     NONE      | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    2MB     |     NONE      | (1) 256K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    2MB     |     NONE      | (1) 512K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    2MB     |     NONE      |     NONE      | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    3MB     | (4) 256K x 9  | (1) 256K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    3MB     | (4) 256K x 9  | (1) 512K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    3MB     |     NONE      | (1) 512K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    3MB     |     NONE      | (1) 256K x 36 | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    4MB     |  (4) 1M x 9   |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    4MB     |     NONE      | (1) 512K x 36 | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    4MB     | (4) 256K x 9  | (1) 512K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    5MB     |  (4) 1M x 9   | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    5MB     |  (4) 1M x 9   |     NONE      | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    5MB     |     NONE      |  (1) 1M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    5MB     |     NONE      | (1) 256K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    5MB     | (4) 256K x 9  |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    5MB     | (4) 256K x 9  |     NONE      |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    6MB     |  (4) 1M x 9   | (1) 256K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    6MB     | (4) 256K x 9  |  (1) 1M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    6MB     | (4) 256K x 9  | (1) 256K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    6MB     |     NONE      |  (1) 1M x 36  | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    6MB     |     NONE      | (1) 512K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    7MB     |  (4) 1M x 9   | (1) 512K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    8MB     |  (4) 1M x 9   |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    8MB     |  (4) 1M x 9   |     NONE      |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    8MB     |     NONE      |  (1) 1M x 36  |  (1) 1M x 36  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CONT.)                 |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    9MB     |  (4) 1M x 9   |  (1) 1M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    9MB     |  (4) 1M x 9   | (1) 256K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    9MB     | (4) 256K x 9  |  (1) 1M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    10MB    |     NONE      |  (1) 2M x 36  | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    10MB    |  (4) 1M x 9   | (1) 512K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    12MB    |  (4) 1M x 9   |  (1) 1M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    12MB    |  (4) 1M x 9   |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    12MB    |     NONE      |  (1) 2M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    12MB    |     NONE      |  (1) 1M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    13MB    | (4) 256K x 9  |  (1) 2M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    13MB    |  (4) 1M x 9   |  (1) 2M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (4) 4M x 9   |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (4) 1M x 9   |  (1) 2M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    16MB    |     NONE      |  (1) 2M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    17MB    |  (4) 4M x 9   | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    17MB    |  (4) 4M x 9   |     NONE      | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    17MB    | (4) 256K x 9  |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    17MB    | (4) 256K x 9  |     NONE      |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    18MB    |  (4) 4M x 9   | (1) 256K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    18MB    | (4) 256K x 9  |  (1) 4M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    18MB    | (4) 256K x 9  | (1) 256K x 36 |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    19MB    |  (4) 4M x 9   | (1) 512K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (4) 4M x 9   |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (4) 4M x 9   |     NONE      |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (4) 1M x 9   |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (4) 1M x 9   |     NONE      |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    21MB    | (4) 256K x 9  |  (1) 4M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    21MB    | (4) 256K x 9  |  (1) 1M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    21MB    |  (4) 1M x 9   |  (1) 4M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    21MB    |  (4) 1M x 9   | (1) 256K x 36 |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    21MB    |  (4) 4M x 9   |  (1) 1M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    21MB    |  (4) 4M x 9   | (1) 256K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    22MB    |  (4) 4M x 9   | (1) 512K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (4) 4M x 9   |  (1) 1M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (4) 1M x 9   |  (1) 4M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (4) 1M x 9   |  (1) 1M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |     NONE      |  (1) 4M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |     NONE      |  (1) 2M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    25MB    | (4) 256K x 9  |  (1) 2M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    25MB    |  (4) 4M x 9   |  (1) 2M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    28MB    |  (4) 4M x 9   |  (1) 2M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    28MB    |  (4) 1M x 9   |  (1) 2M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (4) 4M x 9   |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (4) 4M x 9   |     NONE      |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    32MB    |     NONE      |  (1) 4M x 36  |  (1) 4M x 36  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CONT.)                 |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    33MB    | (4) 256K x 9  |  (1) 4M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    33MB    |  (4) 4M x 9   | (1) 256K x 36 |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    33MB    |  (4) 4M x 9   |  (1) 4M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    34MB    |  (4) 4M x 9   | (1) 512K x 36 |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    36MB    |  (4) 1M x 9   |  (1) 4M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    36MB    |  (4) 4M x 9   |  (1) 1M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    36MB    |  (4) 4M x 9   |  (1) 4M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (4) 4M x 9   |  (1) 2M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (4) 4M x 9   |  (1) 4M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (4) 16M x 9  |     NONE      |     NONE      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CLOCK GENERATOR CONFIGURATION                |
          |------------------------------------------------------------|
          |     Clock Type     |        JP32        |       JP33       |
          |--------------------+--------------------+------------------|
          |       MX8310       | pins 1 & 2 closed  |       Open       |
          |--------------------+--------------------+------------------|
          |       MX8315       |        Open        |      Closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size   |     Bank 0     |     Bank 1     |      TAG      |
          |----------+----------------+----------------+---------------|
          |   32KB   |   (4) 8K x 8   |      NONE      |  (1) 8K x 8   |
          |----------+----------------+----------------+---------------|
          |   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) 16K x 8  |
          |----------+----------------+----------------+---------------|
          |  256KB   |  (4) 32K x 8   |  (4) 32K x 8   |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |    JP15    |    JP16    |  JP17  |  JP19  |  JP20  |
          |-------+------------+------------+--------+--------+--------|
          | 32KB  | pins 2 & 3 |    Open    |  Open  |  Open  |  Open  |
          |-------+------------+------------+--------+--------+--------|
          | 64KB  | pins 1 & 2 |    Open    |  Open  | Closed |  Open  |
          |-------+------------+------------+--------+--------+--------|
          | 128KB | pins 2 & 3 | pins 2 & 3 | Closed | Closed |  Open  |
          |-------+------------+------------+--------+--------+--------|
          | 256KB | pins 1 & 2 | pins 1 & 2 | Closed | Closed | Closed |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |        Type        |        JP9        |       JP11        |
          |--------------------+-------------------+-------------------|
          |      80486SX       |       Open        | pins 2 & 3 closed |
          |--------------------+-------------------+-------------------|
          |      ODP486SX      | pins 2 & 3 closed | pins 1 & 2, and 3 |
          |                    |                   |    & 4 closed     |
          |--------------------+-------------------+-------------------|
          |  CX486SX/CX487SX   | pins 1 & 2 closed | pins 1 & 2, and 3 |
          |                    |                   |    & 4 closed     |
          |--------------------+-------------------+-------------------|
          |      80486DX2      | pins 1 & 2 closed | pins 1 & 2, and 3 |
          |                    |                   |    & 4 closed     |
          |--------------------+-------------------+-------------------|
          | 80486DX2 Overdrive | pins 2 & 3 closed | pins 1 & 2, and 3 |
          |                    |                   |    & 4 closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |  Speed  |   JP2    |   JP3   |   JP4   |        JP7        |
          |---------+----------+---------+---------+-------------------|
          |  20MHz  |   Open   |  Open   |  Open   | pins 1 & 2 closed |
          |---------+----------+---------+---------+-------------------|
          |  25MHz  |  Closed  |  Open   |  Open   | pins 1 & 2 closed |
          |---------+----------+---------+---------+-------------------|
          |  33MHz  |  Closed  | Closed  | Closed  | pins 1 & 2 closed |
          |---------+----------+---------+---------+-------------------|
          |  40MHz  |  Closed  | Closed  |  Open   | pins 2 & 3 closed |
          |---------+----------+---------+---------+-------------------|
          | 50i MHz |  Closed  |  Open   |  Open   | pins 1 & 2 closed |
          |---------+----------+---------+---------+-------------------|
          |  50MHz  |   Open   |  Open   | Closed  | pins 2 & 3 closed |
          |---------+----------+---------+---------+-------------------|
          | 66i MHz |  Closed  | Closed  | Closed  | pins 1 & 2 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   NPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |        Type        |       JP12        |       JP14        |
          |--------------------+-------------------+-------------------|
          |    Intel CPU or    | pins 2 & 3 closed |       Open        |
          |      CX486SX       |                   |                   |
          |--------------------+-------------------+-------------------|
          | CX486SX & CX487SX  | pins 1 & 2 closed | pins 2 & 3 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          VESA WAIT STATE/BUS SPEED CONFIGURATION           |
          |------------------------------------------------------------|
          |     CPU speed      |    Wait states     |       JP18       |
          |--------------------+--------------------+------------------|
          |      £ 33MHz       |   0 wait states    |       Open       |
          |--------------------+--------------------+------------------|
          |      > 33MHz       |    1 wait state    |      Closed      |
          +------------------------------------------------------------+