UNIDENTIFIED 80286 MOTHER BOARD Processor 80286 Processor Speed 12/25MHz Chip Set Suntac Max. Onboard DRAM 4MB Cache Award/Phoenix BIOS Unidentified Dimensions 330mm x 218mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Speaker J19 Turbo LED JP5 Power LED & keylock J20 Reset switch JP6 External battery J21 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Factory configured - do not DSP1/2 N/A alter » Factory configured - do not DSP1/4 N/A alter » Factory configured - do not J18 pins 2 & 3 alter closed BIOS type select Award JP7 pins 2 & 3 closed BIOS type select Phoenix JP7 pins 1 & 2 closed Memory wait state select 0 JP11 Closed wait states Memory wait state select 1 JP11 Open wait state Monitor type select color SW1 pins 2 & 3 closed Monitor type select SW1 pins 1 & 2 monochrome closed Note: The location of J18 is unidentified. DRAM CONFIGURATION Mode Size Base EMS Bank 0 Bank 1 memory 0 512KB 512KB N/A (18) 41256 NONE 1 640KB 640KB N/A (18) 41256 (18) 4164 2 1MB 1MB N/A (18) 41256 (18) 41256 3 1MB 640KB 384KB (18) 41256 (18) 41256 4 2MB 2MB N/A (18) NONE 411000 5 2MB 640KB 1408KB (18) NONE 411000 6 4MB 4MB N/A (18) (18) 411000 411000 7 4MB 640KB 3456KB (18) (18) 411000 411000 DRAM SWITCH CONFIGURATION Mode DSP1/6 DSP1/7 DSP1/8 0 On On On 1 On On Off 2 On Off On 3 On Off Off 4 Off On On 5 Off On Off 6 Off Off On 7 Off Off Off DRAM MODE CONFIGURATION Setting JP8 Mode changes external Closed Mode changes internal Open CLOCK SPEED CONFIGURATION Setting DSP1/1 JP1 JP4 High speed Off pins 2 & 3 N/A (internal) closed Low speed On pins 2 & 3 N/A (internal) closed High speed N/A pins 1 & 2 Closed (external) closed Low speed N/A pins 1 & 2 Open (external) closed Note: If JP4 is open, speed can be switched through the keyboard. High speed: CNTL, ALT, 2. Low speed: CNTL, ALT, 1. (Award BIOS only) I/O WAIT STATE CONFIGURATION Wait states JP3 DSP1/3 4 pins 2 & 3 closed On 6 pins 2 & 3 closed Off 6 pins 1 & 2 closed N/A Note: The location of JP3 is unidentified. BIOS CONFIGURATION Type JP9 DSP1/5 27128 pins 1 & 2 closed On 27256 pins 2 & 3 closed Off Note: The location of JP9 is unidentified.