(TXT) View Source
       
       # UNIDENTIFIED
       
          A351 386SX
       
          Processor    80386SX                                           
          Processor    16/20MHz                                          
          Speed        
          Chip Set     UMC                                               
          Max. onboard 4MB                                               
          DRAM         
          Cache        None                                              
          BIOS         AMI                                               
          Dimensions   330mm x 220mm                                     
          I/O Options  Floppy drive interface, game port, IDE interface, 
                       parallel port, serial ports (2), VGA feature      
                       connector                                         
          NPU Options  80387SX                                           
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | External battery  |    J1    | Floppy drive     |    P2    |
          |                   |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |    J2    | IDE interface    |    P3    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |    J3    | VGA feature      |    P4    |
          | keylock           |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Turbo switch      |    J4    | Serial port 2    | Unknown  |
          |-------------------+----------+------------------+----------|
          | Reset switch      |    J5    | Serial port 1    | Unknown  |
          |-------------------+----------+------------------+----------|
          | IDE interface LED |    J6    | Parallel port    | Unknown  |
          |-------------------+----------+------------------+----------|
          | Turbo LED         |    J7    | Game port        | Unknown  |
          |------------------------------------------------------------|
          | Note:J4 might not be available on future boards.           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | »  | Onboard VGA enabled      |      JP2      | pins 1 & 2 |
          |    |                          |               |   closed   |
          |----+--------------------------+---------------+------------|
          |    | Onboard VGA disabled     |      JP2      | pins 2 & 3 |
          |    |                          |               |   closed   |
          |----+--------------------------+---------------+------------|
          | »  | Monitor type select CGA  |      JP3      |   Closed   |
          |----+--------------------------+---------------+------------|
          |    | Monitor type select      |      JP3      |    Open    |
          |    | monochrome               |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Factory configured - do  |      JP4      |    Open    |
          |    | not alter                |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Battery select internal  |      JP5      |   Closed   |
          |----+--------------------------+---------------+------------|
          |    | Battery select 6V        |      JP5      |    Open    |
          |    | external                 |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Monitor type select      |     SW1/3     |    Off     |
          |    | color                    |               |            |
          |----+--------------------------+---------------+------------|
          |    | Monitor type select      |     SW1/3     |     On     |
          |    | monochrome               |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Floppy drive interface   |     SW1/4     |    Off     |
          |    | (P2) enabled             |               |            |
          |----+--------------------------+---------------+------------|
          |    | Floppy drive interface   |     SW1/4     |     On     |
          |    | (P2) disabled            |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Parallel port select     |     SW1/5     |    Off     |
          |    | LPT1 (378-37Fh)          |               |            |
          |----+--------------------------+---------------+------------|
          |    | Parallel port select     |     SW1/5     |     On     |
          |    | LPT2 (278-27Fh)          |               |            |
          |----+--------------------------+---------------+------------|
          | »  | IDE interface (P3)       |     SW1/6     |    Off     |
          |    | enabled                  |               |            |
          |----+--------------------------+---------------+------------|
          |    | IDE interface (P3)       |     SW1/6     |     On     |
          |    | disabled                 |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Game port enabled        |     SW1/7     |    Off     |
          |----+--------------------------+---------------+------------|
          |    | Game port disabled       |     SW1/7     |     On     |
          |----+--------------------------+---------------+------------|
          | »  | NPU synchronous with CPU |     SW1/8     |    Off     |
          |----+--------------------------+---------------+------------|
          |    | NPU asynchronous with    |     SW1/8     |     On     |
          |    | CPU                      |               |            |
          |----+--------------------------+---------------+------------|
          | »  | CMOS memory normal       |      P1       |    Open    |
          |    | operation                |               |            |
          |----+--------------------------+---------------+------------|
          |    | CMOS memory clear        |      P1       |   Closed   |
          |------------------------------------------------------------|
          | Note: If an EGA or VGA monitor is installed, JP3 can be on |
          | either setting.                                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |      512KB       |    (2) 256K x 9    |        None        |
          |------------------+--------------------+--------------------|
          |       1MB        |    (2) 256K x 9    |    (2) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       2MB        |     (2) 1M x 9     |        None        |
          |------------------+--------------------+--------------------|
          |       4MB        |     (2) 1M x 9     |     (2) 1M x 9     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 MONITOR TYPE CONFIGURATION                 |
          |------------------------------------------------------------|
          |    MonitorType    | SW2/1  | SW2/2 | SW2/3 | SW2/4 | SW2/5 |
          |-------------------+--------+-------+-------+-------+-------|
          |        CGA        |   On   |  On   |  On   |  On   |  On   |
          |-------------------+--------+-------+-------+-------+-------|
          |        MDA        |  Off   |  On   |  On   |  On   |  On   |
          |-------------------+--------+-------+-------+-------+-------|
          |   Pure MDA (no    |   On   |  Off  |  On   |  On   |  On   |
          |    emulation)     |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          |        EGA        |  Off   |  Off  |  On   |  On   |  On   |
          |-------------------+--------+-------+-------+-------+-------|
          |   Pure EGA (no    |   On   |  On   |  Off  |  On   |  On   |
          |    emulation)     |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          |     VGA Color     |  Off   |  On   |  Off  |  On   |  On   |
          |-------------------+--------+-------+-------+-------+-------|
          |     VGA Mono      |   On   |  Off  |  Off  |  On   |  On   |
          |-------------------+--------+-------+-------+-------+-------|
          |       8514        |  Off   |  Off  |  Off  |  On   |  On   |
          |-------------------+--------+-------+-------+-------+-------|
          |   NEC 2A (640 x   |   On   |  On   |  On   |  Off  |  On   |
          |       480)        |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          |     NEC/NEC+      |  Off   |  On   |  On   |  Off  |  On   |
          | (multifrequency)  |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          |  NEC XL (1024 x   |   On   |  Off  |  On   |  Off  |  On   |
          |       768)        |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          |  NEC 3D (1024 x   |  Off   |  Off  |  On   |  Off  |  On   |
          |       768)        |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          | NEC4D/NEC5D (1024 |   On   |  On   |  Off  |  Off  |  On   |
          |      x 768)       |        |       |       |       |       |
          |-------------------+--------+-------+-------+-------+-------|
          |     Portrait      |  Off   |  On   |  Off  |  Off  |  On   |
          |------------------------------------------------------------|
          | Note:SW2/5 on = interlaced display. For non-interlaced     |
          | display this setting should be in the      Off position.   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT CONFIGURATION                  |
          |------------------------------------------------------------|
          | Serial port 1 | Serial port  | SW1/switch 2 | SW1/switch 2 |
          |               |      2       |              |              |
          |---------------+--------------+--------------+--------------|
          |     COM1      |     COM2     |     Off      |     Off      |
          |---------------+--------------+--------------+--------------|
          |     COM1      |   Disabled   |     Off      |     Off      |
          |---------------+--------------+--------------+--------------|
          |   Disabled    |     COM2     |      On      |      On      |
          |---------------+--------------+--------------+--------------|
          |   Disabled    |   Disabled   |      On      |      On      |
          +------------------------------------------------------------+