(TXT) View Source
       
       # COMMODORE BUSINESS MACHINES, INC.
       
          386SX
       
          Processor        80386SX                                       
          Processor Speed  16/20/25MHz                                   
          Chip Set         Unknown                                       
          Max. Onboard     16MB                                          
          DRAM             
          Cache            None                                          
          BIOS             Commodore                                     
          Dimensions       254mm x 218mm                                 
          I/O Options      16-bit riser card slot, bus mouse port,       
                           floppy drive interface, game port, IDE        
                           interface, parallel port, serial ports (2),   
                           VGA interface                                 
          NPU Options      80387SX                                       
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | 16-bit riser card |   CN1    | Turbo LED        |    J3    |
          |-------------------+----------+------------------+----------|
          | VGA port          |   CN2    | Turbo switch     |    J4    |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |   CN3    | Reset switch     |    J5    |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   CN4    | IDE interface    |    J9    |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   CN5    | Floppy drive     |   J10    |
          |                   |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | Bus mouse port    |   CN6    | Game port        |   J12    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |    J1    | External battery |   J15    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | IDE interface LED |    J2    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              |  Jumper   |  Position  |
          |-----------------------------------+-----------+------------|
          | » | Monitor type select color     |    J6     |   Closed   |
          |---+-------------------------------+-----------+------------|
          |   | Monitor type select           |    J6     |    Open    |
          |   | monochrome                    |           |            |
          |---+-------------------------------+-----------+------------|
          | » | IDE interface enabled         | J7 and J8 |   Closed   |
          |---+-------------------------------+-----------+------------|
          |   | IDE interface disabled        | J7 and J8 |    Open    |
          |---+-------------------------------+-----------+------------|
          | » | Battery type select internal  |    J14    | pins 1 & 2 |
          |   |                               |           |   closed   |
          |---+-------------------------------+-----------+------------|
          |   | Battery type select external  |    J14    | pins 2 & 3 |
          |   |                               |           |   closed   |
          |---+-------------------------------+-----------+------------|
          | » | VGA port wait states select   |    J16    |    Open    |
          |   | one                           |           |            |
          |---+-------------------------------+-----------+------------|
          |   | VGA port wait states select   |    J16    |   Closed   |
          |   | zero                          |           |            |
          |---+-------------------------------+-----------+------------|
          | » | VGA port enabled              |    J17    |   Closed   |
          |---+-------------------------------+-----------+------------|
          |   | VGA port disabled             |    J17    |    Open    |
          |---+-------------------------------+-----------+------------|
          | » | Floppy interface enabled      |    J23    | pins 1 & 2 |
          |   |                               |           |   closed   |
          |---+-------------------------------+-----------+------------|
          |   | Floppy interface disabled     |    J23    | pins 2 & 3 |
          |   |                               |           |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
          |-------+-------------+------------+------------+------------|
          |  1MB  | (2) 256K x  | (2) 256K x |    NONE    |    NONE    |
          |       |      9      |     9      |            |            |
          |-------+-------------+------------+------------+------------|
          | 1.5MB | (2) 256K x  | (2) 256K x | (2) 256K x |    NONE    |
          |       |      9      |     9      |     9      |            |
          |-------+-------------+------------+------------+------------|
          |  2MB  | (2) 256K x  | (2) 256K x | (2) 256K x | (2) 256K x |
          |       |      9      |     9      |     9      |     9      |
          |-------+-------------+------------+------------+------------|
          |  2MB  | (2) 1M x 9  |    NONE    |    NONE    |    NONE    |
          |-------+-------------+------------+------------+------------|
          |  3MB  | (2) 256K x  | (2) 256K x | (2) 1M x 9 |    NONE    |
          |       |      9      |     9      |            |            |
          |-------+-------------+------------+------------+------------|
          |  4MB  | (2) 1M x 9  | (2) 1M x 9 |    NONE    |    NONE    |
          |-------+-------------+------------+------------+------------|
          |  5MB  | (2) 256K x  | (2) 256K x | (2) 1M x 9 | (2) 1M x 9 |
          |       |      9      |     9      |            |            |
          |-------+-------------+------------+------------+------------|
          |  6MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 |    NONE    |
          |-------+-------------+------------+------------+------------|
          |  8MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
          |-------+-------------+------------+------------+------------|
          | 12MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 4M x 9 |    NONE    |
          |-------+-------------+------------+------------+------------|
          | 16MB  | (2) 4M x 9  | (2) 4M x 9 |    NONE    |    NONE    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PARALLEL PORT CONFIGURATION                 |
          |------------------------------------------------------------|
          | Parallel port | IRQ  |        J13        |  J18   |  J19   |
          |---------------+------+-------------------+--------+--------|
          |     LPT1      |  5   | pins 3 & 4 closed |  Open  | Closed |
          |---------------+------+-------------------+--------+--------|
          |     LPT1      |  7   | pins 1 & 2 closed |  Open  | Closed |
          |---------------+------+-------------------+--------+--------|
          |     LPT2      |  5   | pins 3 & 4 closed | Closed | Closed |
          |---------------+------+-------------------+--------+--------|
          |     LPT2      |  7   | pins 1 & 2 closed | Closed | Closed |
          |---------------+------+-------------------+--------+--------|
          |     LPT3      |  5   | pins 3 & 4 closed | Closed |  Open  |
          |---------------+------+-------------------+--------+--------|
          |     LPT3      |  7   | pins 1 & 2 closed | Closed |  Open  |
          |---------------+------+-------------------+--------+--------|
          |   Disabled    | N/A  |        N/A        |  Open  |  Open  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT CONFIGURATION                  |
          |------------------------------------------------------------|
          |  UART1   |  UART2   |    J20     |    J21     |    J22     |
          |----------+----------+------------+------------+------------|
          |   COM1   |   COM2   | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
          |          |          |   closed   |   closed   |   closed   |
          |----------+----------+------------+------------+------------|
          |   COM1   | Disabled | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
          |          |          |   closed   |   closed   |   closed   |
          |----------+----------+------------+------------+------------|
          |   COM2   |   COM1   | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
          |          |          |   closed   |   closed   |   closed   |
          |----------+----------+------------+------------+------------|
          | Disabled |   COM1   | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
          |          |          |   closed   |   closed   |   closed   |
          |----------+----------+------------+------------+------------|
          | Disabled |   COM2   | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
          |          |          |   closed   |   closed   |   closed   |
          |----------+----------+------------+------------+------------|
          |   COM2   | Disabled | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
          |          |          |   closed   |   closed   |   closed   |
          |----------+----------+------------+------------+------------|
          | Disabled | Disabled | pins 2 & 3 | pins 2 & 3 |    N/A     |
          |          |          |   closed   |   closed   |            |
          +------------------------------------------------------------+