UNIDENTIFIED 286 VLSI TURBO MAINBOARD Processor 80286 Processor Speed 12/16MHz Chip Set VLSI Max. Onboard DRAM 4MB Cache None BIOS AMI/Award/Phoenix Dimensions 330mm x 218mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location External battery J13 Power LED & keylock J16 Turbo switch J14 Reset switch J18 Turbo LED J15 Speaker J19 USER CONFIGURABLE SETTINGS Function Jumper Position » IOCHRDY select normal J4 pins 1 & 2 closed IOCHRDY select add on card J4 pins 2 & 3 closed » Monitor type select color J7 pins 2 & 3 closed Monitor type select monochrome J7 pins 1 & 2 closed » Shadow BIOS enabled J8 Open Shadow BIOS disabled J8 Closed » Parity check enabled J12 pins 1 & 2 closed Parity check disabled J12 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) (4) 4464 (2) 4164 NONE NONE 44256 41256 1MB (4) (2) (4) (2) NONE NONE 44256 41256 44256 41256 2MB NONE NONE NONE NONE (2) 1M NONE x 9 4MB NONE NONE NONE NONE (2) 1M (2) 1M x 9 x 9 DRAM JUMPER CONFIGURATION Size J9 J10 J11 512KB Open Closed Closed 640KB Closed Open Closed 1MB Closed Open Closed 2MB Open Open Open 4MB Closed Open Open