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 |