MICRO 286-12/MICRO 286-16 Motherboard Settings and Configuration
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 |
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