JPN CORPORATION AT 286 Processor 80286 Processor Speed 12/16/25MHz Chip Set ACT Max. Onboard DRAM 4MB Cache None BIOS AMI Dimensions 305mm x 222mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED JP2 External battery JP11 Power LED & keylock JP7 Speaker JP14 Reset switch JP10 Turbo switch JP19 USER CONFIGURABLE JUMPERS Function Jumper/Switch Position » BIOS type select 27128 JP6 pins 1 & 2 closed BIOS type select 27256 JP6 pins 2 & 3 closed » Monitor type select color JP9 pins 2 & 3 closed Monitor type select JP9 pins 1 & 2 monochrome closed » Battery select internal JP12 pins 2 & 3 closed Battery select external JP12 pins 1 & 2 closed » Power good signal detect JP13 pins 1 & 2 from power supply closed Power good signal detect JP13 pins 2 & 3 from board closed » Bus speed select 8Mhz JP17 pins 1 & 2 closed Bus speed select 6Mhz JP17 pins 2 & 3 closed » Parity check enabled JP20 pins 1 & 2 closed Parity check disabled JP20 pins 2 & 3 closed » DRAM speed select 1 wait SW1/4 On state DRAM speed select 0 wait SW1/4 Off states DRAM CONFIGURATION Size Bank 0 Parity Bank 1 Parity Bank 2 Bank 3 (P-0) (P-1) 512KB (4) (2) NONE NONE NONE NONE 44256 41256 512KB NONE NONE NONE NONE (2) NONE 256K x 9 640KB (4) (2) (4) 4464 (2) 4164 NONE NONE 44256 41256 640KB NONE NONE (4) 4464 (2) 4164 (2) NONE 256K x 9 1MB (4) (2) (4) (2) NONE NONE 44256 41256 44256 41256 1MB (4) (2) NONE NONE NONE (2) 44256 41256 256K x 9 1MB NONE NONE NONE NONE (2) (2) 256K x 256K x 9 9 2MB NONE NONE NONE NONE (2) 1M NONE x 9 4MB NONE NONE NONE NONE (2) 1M (2) 1M x 9 x 9 DRAM SWITCH CONFIGURATION Size SW1/1 SW1/2 SW1/3 512KB On On On 640KB On Off Off 1MB On Off On 2MB Off On On 4MB Off Off On