UNIDENTIFIED VLSI-286 Processor 80286 Processor Speed 12MHz Chip Set VLSI Max. Onboard DRAM 4MB Cache None BIOS Unidentified Dimensions 330mm x 218mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location External battery J3 Turbo switch J20 Speaker J18 Power LED & keylock J21 Reset switch J19 Turbo LED J22 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP1 Closed Monitor type select monochrome JP1 Open » Battery type select internal J3 pins 2 & 3 closed Battery type select external J3 Closed » BIOS wait state select 1 wait JP6 Open state BIOS wait states select 2 wait JP6 Closed states » Oscillator select Y2 JP9 pins 1 & 2 closed Oscillator select Y1 JP9 pins 2 & 3 closed » BIOS type select 27256 JP14 Closed BIOS type select 27128 JP14 Open » DRAM wait state select 0 wait JP13 Closed states DRAM wait state select 1 wait JP13 Open states » CPU speed select switchable at J20 pins 1 & 2 keyboard closed CPU speed select forced high J20 pins 2 & 3 closed 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) (16) (2) 4164 NONE NONE 44256 41256 4164 1MB (4) (2) NONE (2) (4) NONE 44256 41256 41256 44256 2MB NONE (2) NONE NONE NONE (16) 411000 411000 4MB NONE (2) (16) (2) NONE (16) 411000 411000 411000 411000 DRAM JUMPER CONFIGURATION Size JP3 JP4 JP5 512KB Closed Closed Closed 640KB Closed Closed Open 1MB Closed Open Closed 2MB Closed Open Open 4MB Open Closed Closed