UNIDENTIFIED 286A Processor 80286 Processor Speed 12/16MHz Chip Set C & T Max. Onboard DRAM 5MB Cache None BIOS AMI Dimensions 310mm x 218mm I/O Options Floppy drive interface, game port, IDE interface, parallel port, serial ports (2) NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Serial port 2 J3 Reset switch J11 Serial port 1 J4 Speaker J12 Game port J5 Power LED & keylock J13 Parallel port J7 IDE interface JP9 Floppy drive interface J8 Turbo switch JP23 Turbo LED J10 IDE interface LED JP28 USER CONFIGURABLE SETTINGS Function Jumper Position Monitor type select monochrome JP2 pins 1 & 2 closed Monitor type select color JP2 pins 2 & 3 closed Floppy drive interface enabled JP4 pins 1 & 2 closed Floppy drive interface disabled JP4 pins 2 & 3 closed CPU low speed CLK select 1/2 JP22 Closed ATCLK CPU low speed CLK select 1/4 JP22 Open CLK2N DRAM CONFIGURATION Size Bank 0 P 0 Bank 1 P 1 Bank 2 Bank 3 512KB (4) (2) NONE NONE NONE NONE 44256 41256 640KB (4) (2) (4) 4464 (2) 4164 NONE NONE 44256 41256 1MB (4) (2) (4) (2) NONE NONE 44256 41256 44256 41256 2MB (4) (2) (4) (2) (2) (2) 44256 41256 44256 41256 256K x 256K x 9 9 2MB NONE NONE NONE NONE (2) 1M NONE x 9 3MB (4) (2) (4) (2) (2) 1M NONE 44256 41256 44256 41256 x 9 4MB NONE NONE NONE NONE (2) 1M (2) 1M x 9 x 9 5MB (4) (2) (4) (2) (2) 1M (2) 1M 44256 41256 44256 41256 x 9 x 9 DRAM CONFIGURATION Setting JP10 JP11 JP12 JP13 JP14 JP15 SIMM set as 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Bank 0 & 1 SIMM set as 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Bank 2 & 3 Note: Pins designated should be in the closed position. IDE CONFIGURATION Setting JP16 JP17 Enabled Closed Closed Disabled Open Open PARALLEL PORT CONFIGURATION LPT JP8 JP9 LPT1 pins 1 & 2 closed pins 2 & 3 closed LPT2 pins 1 & 2 closed pins 1 & 2 closed LPT3 pins 2 & 3 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SERIAL PORT CONFIGURATION Serial port Serial port JP5 JP6 JP7 1 2 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 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed Disabled COM1 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed Disabled COM2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed COM2 Disabled pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed Disabled Disabled pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed