(TXT) View Source
       
       # EPSON, INC.
       
          EQUITY 386DX/25 PLUS
       
          Processor        80386DX                                       
          Processor Speed  25MHz                                         
          Chip Set         Unidentified                                  
          Video Chip Set   Chips and Technology                          
          Maximum Onboard  16MB                                          
          Memory           
          Maximum Video    Unidentified                                  
          Memory           
          Cache            32KB                                          
          BIOS             Epson                                         
          Dimensions       355mm x 304mm                                 
          I/O Options      Floppy drive interface, IDE interface,        
                           parallel port, PS/2 mouse port, serial port,  
                           VGA port                                      
          NPU Options      80387DX/3167                                  
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | PS/2 mouse port   |   CN1    | Speaker          |   CN12   |
          |-------------------+----------+------------------+----------|
          | VGA port          |   CN3    | LED connector    |   CN13   |
          |-------------------+----------+------------------+----------|
          | Serial port       |   CN4    | Power LED        |   CN14   |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   CN5    | Floppy drive     |   CN15   |
          |                   |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | IDE interface LED |   CN11   | IDE interface    |   CN16   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | IOCHRDY signal normal           |  J1   |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | IOCHRDY signal early            |  J1   |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured – do not     |  J9   | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Internal mouse port enabled     |  J10  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | Internal mouse port disabled    |  J10  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | External mouse port enabled     |  J11  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | External mouse port disabled    |  J11  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Monitor type select color       |  J12  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | Monitor type select monochrome  |  J12  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Password disabled               |  J13  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | Password enabled                |  J13  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | On board video enabled          |  J14  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | On board video disabled         |  J14  |  Pins 2 & 3  |
          |   |                                 |       |    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      |            |          |
          |---------+-------------+------------+------------+----------|
          |   3MB   | (4) 256K x  | (4) 256K x | (4) 256K x |   None   |
          |         |      9      |     9      |     9      |          |
          |---------+-------------+------------+------------+----------|
          | 4MB (A) | (4) 256K x  | (4) 256K x | (4) 256K x | (4) 256K |
          |         |      9      |     9      |     9      |   x 9    |
          |---------+-------------+------------+------------+----------|
          | 4MB (B) | (4) 1M x 9  |    None    |    None    |   None   |
          |---------+-------------+------------+------------+----------|
          |   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) 1M x 9  | (4) 1M x 9 | (4) 256K x |   None   |
          |         |             |            |     9      |          |
          |---------+-------------+------------+------------+----------|
          |  10MB   | (4) 256K x  | (4) 256K x | (4) 1M x 9 | (4) 1M x |
          |         |      9      |     9      |            |    9     |
          |---------+-------------+------------+------------+----------|
          |  10MB   | (4) 1M x 9  | (4) 1M x 9 | (4) 256K x | (4) 256K |
          |         |             |            |     9      |   x 9    |
          |---------+-------------+------------+------------+----------|
          |  12MB   | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 |   None   |
          |---------+-------------+------------+------------+----------|
          |  16MB   | (4) 1M x 9  | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x |
          |         |             |            |            |    9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          |   Size    |    J4    |   J5    |   J6    |   J7   |   J8   |
          |-----------+----------+---------+---------+--------+--------|
          |    1MB    |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  | 2 & 3  |
          |-----------+----------+---------+---------+--------+--------|
          |    2MB    |  2 & 3   |  1 & 2  |  2 & 3  | 2 & 3  | 2 & 3  |
          |-----------+----------+---------+---------+--------+--------|
          |    3MB    |  2 & 3   |  1 & 2  |  2 & 3  | 2 & 3  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |  4MB (A)  |  2 & 3   |  1 & 2  |  2 & 3  | 1 & 2  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |  4MB (B)  |  1 & 2   |  2 & 3  |  2 & 3  | 2 & 3  | 2 & 3  |
          |-----------+----------+---------+---------+--------+--------|
          |    6MB    |  2 & 3   |  1 & 2  |  1 & 2  | 2 & 3  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |    8MB    |  1 & 2   |  1 & 2  |  2 & 3  | 2 & 3  | 2 & 3  |
          |-----------+----------+---------+---------+--------+--------|
          |    9MB    |  1 & 2   |  1 & 2  |  2 & 3  | 2 & 3  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |   10MB    |  2 & 3   |  1 & 2  |  1 & 2  | 1 & 2  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |   10MB    |  1 & 2   |  1 & 2  |  2 & 3  | 1 & 2  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |   12MB    |  1 & 2   |  1 & 2  |  1 & 2  | 2 & 3  | 1 & 2  |
          |-----------+----------+---------+---------+--------+--------|
          |   16MB    |  1 & 2   |  1 & 2  |  1 & 2  | 1 & 2  | 1 & 2  |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   BASE MEMORY SELECTION                    |
          |------------------------------------------------------------|
          |       Size       |         J2         |         J3         |
          |------------------+--------------------+--------------------|
          |      256KB       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |      512KB       | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |      640KB       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Note: Board is factory installed with 32KB cache and is    |
          | not configurable.                                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          | Note: The size of the video memory is unidentified.        |
          +------------------------------------------------------------+