NEC TECHNOLOGIES, INC.
======================

   POWERMATE EXPRESS 486SX/20E, 486SX/25E

   Processor         80486SX                                      
   Processor Speed   20/25MHz                                     
   Chip Set          Intel                                        
   Max. Onboard DRAM 16MB                                         
   Cache             None                                         
   BIOS              NEC                                          
   Dimensions        330.2mm x 218.4mm                            
   I/O Options       Proprietary CPU module slot, keyboard/bus    
                     mouse interface,serial ports (2), parallel   
                     port, video port, proprietary video card     
                     sockets, proprietary external memory card    
                     slot, IDE interface, floppy drive interface  
   NPU Options       80487SX/4167                                 

<gopher://bitreich.org/I/th99/m/M-O/30034-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Proprietary CPU  |    J6    | Video port        |    P6    |
   | module           |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Proprietary      |    J7    | Keyboard/Bus      |    P7    |
   | external memory  |          | mouse interface   |          |
   | card             |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Proprietary      | J8, J9,  | Fan power         |    P8    |
   | video card       |  & J10   |                   |          |
   |------------------+----------+-------------------+----------|
   | IDE interface    |    P1    | IDE interface LED |    P9    |
   |------------------+----------+-------------------+----------|
   | Floppy drive     |    P2    | External battery  |   P10    |
   | interface        |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Parallel port    |    P3    | Power supply      |  P11 &   |
   |                  |          |                   |   P12    |
   |------------------+----------+-------------------+----------|
   | Serial port      |    P4    | Drive power       |   P13    |
   | (COM1)           |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Serial port      |    P5    | Drive power       |   P14    |
   | (COM2)           |          |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Password enabled                 |  3F1   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Password disabled                |  3F1   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Test mode disabled               |  10A1  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Test mode enabled                |  10A1  |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | I/O recovery disabled            |  11B5  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | I/O recovery enabled             |  11B5  |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | NEC VGA adapter disabled (U.S.   |  15A1  |    Open    |
   |   | setting)                         |        |            |
   |---+----------------------------------+--------+------------|
   |   | NEC VGA adapter enabled          |  15A1  |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Manufacturing test disabled      |  15K1  |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Manufacturing test enabled       |  15K1  |    open    |
   |---+----------------------------------+--------+------------|
   |>> | BIOS flash reprogramming         |  17H1  | pins 2 & 3 |
   |   | disabled                         |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | BIOS flash reprogramming enabled |  17H1  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | ROM type select 27C256 (28F256)  |  18F1  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | ROM type select 27C512 (28F512)  |  18F1  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 256K x 36    |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   |          Setting           |             15C3              |
   |----------------------------+-------------------------------|
   |    LPT1/IRQ7, LPT2/IRQ5    |   pins 1 & 2, 5 & 6 closed    |
   |----------------------------+-------------------------------|
   |    LPT1/IRQ5, LPT2/IRQ7    |   pins 2 & 3, 4 & 5 closed    |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/m/M-O/30034-2.png>
   

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |         Function         |   Jumper    |     Position      |
   |--------------------------+-------------+-------------------|
   |>> | Test mode disabled   | 15A2 & 15A3 | pins 1 & 2 closed |
   |---+----------------------+-------------+-------------------|
   |   | Test mode enabled    | 15A2 & 15A3 | pins 2 & 3 closed |
   +------------------------------------------------------------+