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 |