UNIDENTIFIED MICRO 286-12 Processor 80286 Processor Speed 12MHz Chip Set Unidentified Max. Onboard DRAM 4MB Cache None BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Speaker J1 Turbo LED J4 Reset switch J2 External battery J7 Power LED & keylock J3 Turbo switch J8 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Wait states select 0 W1 pins 1 & 2 closed Wait state select 1 W1 pins 2 & 3 closed » Factory configured - do not W2 pins 2 & 3 alter closed » BIOS type select 27256 W6 pins 1 & 2 closed BIOS type select 27128 W6 pins 2 & 3 closed » Monitor type select color W7 Closed Monitor type select W7 Open monochrome » Parity check enabled W9 pins 1 & 2 closed Parity check disabled W9 pins 2 & 3 closed » Bus speed select fast SW1/2 On Bus speed select normal SW1/2 Off DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 256KB 1 (4) 44256 NONE NONE NONE 256KB NONE NONE (2) 256K x NONE 9 512KB 2 (4) 44256 NONE NONE NONE 512KB NONE NONE (2) 256K x (2) 256K x 9 9 512KB NONE NONE (2) 1M x 9 NONE 640KB 3 (4) 44256 (4) 4464 NONE NONE 640KB NONE NONE (2) 256K x (2) 256K x 9 9 640KB NONE NONE (2) 1M x 9 NONE 1MB 2 (4) 44256 (4) 44256 NONE NONE 1MB NONE NONE (2) 256K x (2) 256K x 9 9 2MB NONE NONE (2) 1M x 9 NONE 4MB NONE NONE (2) 1M x 9 (2) 1M x 9 Note:If using only SIMMs don't install any chips in P-0 or P-1. Note 1 :If parity checking is enabled, install (2) 41256 in P-0 Note 2 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 41256 in P-1 Note 3 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 4164 in P-0 DRAM SWITCH CONFIGURATION Size SW1/1 SW1/2 SW1/3 256KB 1 On On On 256KB On On On 512KB 2 On Off On 512KB On Off On 512KB Off On On 640KB 3 On On Off 640KB On On Off 640KB Off Off On 1MB 2 On Off Off 1MB On Off Off 2MB Off On Off 4MB Off Off Off