(TXT) View Source
       
       # SAMSUNG ELECTRONICS, INC.
       
          S 500
       
          Processor        80286                                         
          Processor Speed  16/20MHz                                      
          Chip Set         Unidentified                                  
          Video Chip Set   None                                          
          Maximum Onboard  1MB                                           
          Memory           
          Maximum Video    None                                          
          Memory           
          Cache            None                                          
          BIOS             Unidentified                                  
          Dimensions       355mm x 304mm                                 
          I/O Options      Floppy drive interface, parallel port, serial 
                           ports (2)                                     
          NPU Options      80287                                         
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   CN1    | External battery |   JP2    |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   CN2    | Keyboard         |   JP17   |
          |                   |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |   CN3    | Power LED &      |   JP18   |
          |                   |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   CN4    | Speaker          |   JP20   |
          | interface         |          |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          |   | Parallel port enabled           |  JP1  |    Closed    |
          |---+---------------------------------+-------+--------------|
          |   | Parallel port disabled          |  JP1  |     Open     |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 1 enabled           |  JP3  |    Closed    |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 1 disabled          |  JP3  |     Open     |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 2 enabled           |  JP4  |    Closed    |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 2 disabled          |  JP4  |     Open     |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive secondary address  |  JP5  |    Closed    |
          |   | enabled                         |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive primary address    |  JP5  |     Open     |
          |   | enabled                         |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive speed select dual  |  JP7  |    Closed    |
          |   | speed                           |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive speed select       |  JP7  |     Open     |
          |   | single speed                    |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Precompensation value select    |  JP8  |    Closed    |
          |   | 187ns                           |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Precompensation value select    |  JP8  |     Open     |
          |   | 125ns                           |       |              |
          |---+---------------------------------+-------+--------------|
          |   | DMA CLOCK = DMA CLOCK           | JP13  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | DMA CLOCK = SYS CLOCK           | JP13  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | BIOS type select 27256          | JP14  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | BIOS type select 27128          | JP14  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | ROM enable signal select XMER   | JP15  |  Pins 1 & 2  |
          |   | signal                          |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | ROM enable signal select LCSROM | JP15  |  Pins 2 & 3  |
          |   | signal                          |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | JP19  | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Monitor type select color       |  SW1  |      Up      |
          |---+---------------------------------+-------+--------------|
          |   | Monitor type select monochrome  |  SW1  |     Down     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size   |   Bank 0   |   Bank 1   |   Bank 2   |  Bank 3   |
          |---------+------------+------------+------------+-----------|
          |  256KB  | (9) 41256  |    None    |    None    |   None    |
          |---------+------------+------------+------------+-----------|
          |  512KB  | (9) 41256  | (9) 41256  |    None    |   None    |
          |---------+------------+------------+------------+-----------|
          |  640KB  | (9) 41256  | (9) 41256  |  (9) 4164  |   None    |
          |---------+------------+------------+------------+-----------|
          |   1MB   | (9) 41256  | (9) 41256  | (9) 41256  | (9) 41256 |
          |------------------------------------------------------------|
          | Note: The location of banks 0, 1, 2 & 3 are unidentified.  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          |       Size       |        JP10        |        JP11        |
          |------------------+--------------------+--------------------|
          |      256KB       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |      512KB       | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |      640KB       | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |       1MB        | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |             Speed             |            JP16            |
          |-------------------------------+----------------------------|
          |             16MHz             |            Open            |
          |-------------------------------+----------------------------|
          |             20MHz             |     Pins 1 & 2 closed      |
          |-------------------------------+----------------------------|
          |  16/20MHz (through keyboard)  |     Pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              ON BOARD FLOPPY DRIVE SELECTION               |
          |------------------------------------------------------------|
          |      Setting       |        JP6         |       JP9        |
          |--------------------+--------------------+------------------|
          |      Enabled       |       Closed       |      Closed      |
          |--------------------+--------------------+------------------|
          |      Disabled      |        Open        |       Open       |