UNIDENTIFIED
MICRO 286-12/MICRO 286-16
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 12/16MHz  | 
| 
 Chip Set  | 
 G-2  | 
| 
 Max. Onboard DRAM  | 
 4MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 AMI  | 
| 
 Dimensions  | 
 330.2mm x 218.4mm  | 
| 
 I/O Options  | 
 None  | 
| 
 NPU Options  | 
 80287  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Power LED & keylock  | 
 P1  | 
 Turbo LED  | 
 P4  | 
| 
 Speaker  | 
 P2  | 
 Turbo switch  | 
 P5  | 
| 
 Reset switch  | 
 P3  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper/Switch  | 
 Position  | |
| » | 
 CPU speed at boot select fast  | 
 S1/switch 1  | 
 open  | 
| 
 CPU speed at boot select slow  | 
 S1/switch 1  | 
 closed  | |
| » | 
 Bus speed select 6/8MHz  | 
 S1/switch 2  | 
 open  | 
| 
 Bus speed select 12/16MHz  | 
 S1/switch 2  | 
 closed  | |
| 
 DRAM speed select 0 wait states  | 
 W3  | 
 closed  | |
| 
 DRAM speed select 1 wait state  | 
 W3  | 
 open  | |
| » | 
 BIOS type select 27256  | 
 W4  | 
 pins 2 & 3 closed  | 
| 
 BIOS type select 27128  | 
 W4  | 
 pins 1 & 2 closed  | |
| » | 
 NPU mode select synchronous with CPU  | 
 W5  | 
 286CLK  | 
| 
 NPU mode select synchronous with Oscillator installed at O1  | 
 W5  | 
 iOSC  | |
| » | 
 Monitor type select color  | 
 W6  | 
 closed  | 
| 
 Monitor type select monochrome  | 
 W6  | 
 open  | |
| 
 Note:The max. and min. speeds of the bus are equal to the max. and min. speeds of the CPU. e.g. A 16MHz system would have bus speeds of 8MHz (min.) and 16MHz (max).  | |||
| 
 DRAM CONFIGURATION  | |||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 W7  | 
 S1/Switch 3  | 
 S1/Switch 4  | 
| 
 512KB  | 
 (18) 41256  | 
 NONE  | 
 pins 2 & 3 closed  | 
 closed  | 
 closed  | 
| 
 640KB  | 
 (18) 41256  | 
 (18) 41256  | 
 pins 2 & 3 closed  | 
 closed  | 
 open  | 
| 
 1MB  | 
 (18) 41256  | 
 (18) 41256  | 
 pins 2 & 3 closed  | 
 open  | 
 open  | 
| 
 2MB  | 
 (18) 411000  | 
 NONE  | 
 pins 1 & 2 closed  | 
 open  | 
 closed  | 
| 
 4MB  | 
 (18) 411000  | 
 (18) 411000  | 
 pins 1 & 2 closed  | 
 open  | 
 open  |