ABC COMPUTER COMPANY, LTD. COMPACT 286 VER. 1/VER. 4 Processor 80286 Processor Speed 20MHz Chip Set C & T Max. Onboard DRAM 8MB Cache None BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED E3 External battery J17 Reset switch E6 Speaker J19 MIPS counter E8 Power LED & keylock J21 USER CONFIGURABLE SETTINGS Function Jumper Position » NPU speed select fast E1 & E2 pins 1 & 2 closed NPU speed select slow E1 & E2 pins 2 & 3 closed » BIOS type select 27128 E4 pins 1 & 2 closed BIOS type select 27256 E4 pins 2 & 3 closed » CMOS memory normal operation E5 pins 1 & 2 closed CMOS memory clear E5 pins 2 & 3 closed » Reset enabled through hardware E7 pins 2 & 3 and keyboard closed Reset enabled through hardware E7 pins 1 & 2 only closed » Monitor type select monochrome SW1 pins 1 & 2 closed Monitor type select color SW1 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (18) 41256 NONE NONE NONE 640KB (18) 41256 (18) 4164 NONE NONE 1MB (18) 41256 (18) 41256 NONE NONE 1.5MB (18) 41256 (18) 41256 (18) 41256 NONE 1.64MB (18) 41256 (18) 4164 (18) 41256 (18) 41256 2MB (18) 41256 (18) 41256 (18) 41256 (18) 41256 2MB (18) 411000 NONE NONE NONE 3MB (18) 41256 (18) 41256 (18) 411000 NONE 4MB (18) 411000 (18) 411000 NONE NONE 4.64MB (18) 41256 (18) 4164 (18) 411000 (18) 411000 5MB (18) 41256 (18) 41256 (18) 411000 (18) 411000 6MB (18) 411000 (18) 411000 (18) 411000 NONE 8MB (18) 411000 (18) 411000 (18) 411000 (18) 411000 Note:Locations of banks within the DRAM area are unknown.