UNIDENTIFIED J-286P SYSTEM BOARD Processor 80286 (exact location unknown) Processor Speed 12/16/20/24MHz Chip Set Suntac Max. Onboard DRAM 5MB Cache None BIOS AMI Dimensions 220mm x 220mm I/O Options Floppy drive interface (on some models), IDE interface (on some models) NPU Options 80287 (exact location unknown) [Image] CONNECTIONS Purpose Location Purpose Location Reset switch J1 Speaker J4 Turbo switch J2 Power LED & keylock J5 Turbo LED J3 External battery JP9 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not JP1 Open alter » Factory configured - do not JP2 Open alter » Floppy drive interface enabled JP5 Closed (interface location unknown) Floppy drive interface disabled JP5 Open » Monitor type select monochrome JP12 Open Monitor type select color JP12 Closed » Parity check enabled JP13 Closed Parity check disabled JP13 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Parity 2 Bank 3 Parity 3 1MB NONE NONE (4) (4) (4) (4) 41256 44256 41256 44256 1MB (2) (2) NONE NONE NONE NONE 256K x 256K x 9 9 2MB (2) (2) (4) (4) (4) (4) 41256 256K x 256K x 44256 41256 44256 9 9 2MB (2) 1M NONE NONE NONE NONE NONE x 9 3MB (2) 1M NONE (4) (4) (4) (4) 41256 x 9 44256 41256 44256 4MB (2) 1M (2) 1M NONE NONE NONE NONE x 9 x 9 5MB (2) 1M (2) 1M (4) (4) (4) (4) 41256 x 9 x 9 44256 41256 44256 DRAM JUMPER CONFIGURATION Size JP8 JP9 JP10 JP11 1MB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed 1MB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed closed 2MB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed 2MB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed closed 3MB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed 4MB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed closed 5MB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed IDE INTERFACE CONFIGURATION Setting JP3 JP4 Enabled Closed Open Disabled Open Closed Note: The location of the interface is unknown. Interface is an option and may not be present. CPU SPEED CONFIGURATION System speed Bus speed JP20 12MHz 6MHz pins 1 & 2 closed 16MHz 8MHz pins 1 & 2 closed 20MHz 8MHz pins 2 & 3 closed 24MHz 8MHz pins 2 & 3 closed