SAMSUNG ELECTRONICS, INC. S 500 Processor 80286 Processor Speed 16/20MHz Chip Set Unidentified Video Chip Set None Maximum Onboard Memory 1MB Maximum Video Memory None 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 connector JP17 Serial port 2 CN3 Power LED & keylock JP18 Floppy drive interface CN4 Speaker JP20 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 single JP7 Open 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 closed signal ROM enable signal select LCSROM JP15 Pins 2 & 3 closed signal » 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