PEAKTRON COMPUTER, INC. PA386SX-SMT-16/20/25 PA286-SMT-12/16/20/25 Processor 80286/80386SX Processor Speed 12/16/20/25MHz Chip Set Peaktron Max. Onboard DRAM 16MB Cache None BIOS AMI Dimensions 248mm x 218mm I/O Options None NPU Options 80287/80387 [Image] CONNECTIONS Purpose Location Purpose Location Reset switch J1 Speaker J4 Turbo switch J2 Power LED & Keylock J5 Turbo LED J3 External battery JP1 Note:Motherboard is supplied with either an 80386SX & 80387SX socket or an 80286 & 80287 socket. USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Monitor type select J7 open monochrome Monitor type select color J7 closed » NPU mode select synchronous J11 pins 2 & 3 with OSC1 closed NPU mode select synchronous J11 pins 1 & 2 with oscillator at U49 closed Bus speed select ATCLK/2 SW1/1 Off Bus speed select ATCLK/3 SW1/1 On » Parity check enabled SW1/2 On Parity check disabled SW1/2 Off » Shadow ram disabled SW1/4 On Shadow ram enabled SW1/4 Off Note:Socket at U49 may not be available on all boards. If 8 bit SIMM/SIPPs are used, SW1/switch 2 must be open, otherwise it must be closed. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 P - 0 P - 1 512KB (4) NONE NONE NONE (2) NONE 44256 41256 512KB NONE NONE (2) NONE NONE NONE 256K x 9 1MB (4) (4) NONE NONE (2) (2) 41256 44256 44256 41256 1MB NONE NONE (2) (2) NONE NONE 256K x 256K x 9 9 1.5MB (4) (4) (2) NONE NONE NONE 44256 44256 256K x 9 2MB (4) NONE NONE NONE (2) NONE 441000 411000 2MB NONE NONE (2) 1M NONE NONE NONE x 9 3MB (4) (4) (2) 1M NONE NONE NONE 44256 44256 x 9 4MB (4) (4) NONE NONE (2) (2) 441000 441000 411000 411000 4MB NONE NONE (2) 1M (2) 1M NONE NONE x 9 x 9 5MB (4) (4) (2) 1M (2) 1M NONE NONE 44256 44256 x 9 x 9 6MB (4) (4) (2) 1M NONE NONE NONE 441000 441000 x 9 8MB NONE NONE (2) 4M NONE NONE NONE x 9 16MB NONE NONE (2) 4M (2) 4M NONE NONE x 9 x 9 DRAM JUMPER/SWITCH CONFIGURATION Size J8 J9 SW1/5 SW1/6 SW1/7 SW1/8 512KB 2 & 3 1 & 2 Off On Off Off 512KB 1 & 2 2 & 3 Off On Off Off 1MB 2 & 3 1 & 2 Off On Off On 1MB 1 & 2 2 & 3 Off On Off On 1.5MB 2 & 3 1 & 2 Off Off On Off 2MB 2 & 3 1 & 2 On Off Off Off 2MB 1 & 2 2 & 3 On Off Off Off 3MB 2 & 3 1 & 2 Off On On On 4MB 2 & 3 1 & 2 On Off Off On 4MB 1 & 2 2 & 3 On Off Off On 5MB 2 & 3 1 & 2 Off On On On 6MB 2 & 3 1 & 2 On Off On Off 8MB 1 & 2 2 & 3 On On Off Off 16MB 1 & 2 2 & 3 On On Off On Note:Pins designated should be in the closed position. BIOS CONFIGURATION Size J10 J12 27256 pins 1 & 2 closed Open 27512 pins 2 & 3 closed Closed