UNIDENTIFIED
MICRO 286-12
|
Processor |
80286 |
|
Processor Speed |
12MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J1 |
Turbo LED |
J4 |
|
Reset switch |
J2 |
External battery |
J7 |
|
Power LED & keylock |
J3 |
Turbo switch |
J8 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Wait states select 0 |
W1 |
pins 1 & 2 closed | |
|
Wait state select 1 |
W1 |
pins 2 & 3 closed | |
|
Factory configured - do not alter |
W2 |
pins 2 & 3 closed | |
|
BIOS type select 27256 |
W6 |
pins 1 & 2 closed | |
|
BIOS type select 27128 |
W6 |
pins 2 & 3 closed | |
|
Monitor type select color |
W7 |
Closed | |
|
Monitor type select monochrome |
W7 |
Open | |
|
Parity check enabled |
W9 |
pins 1 & 2 closed | |
|
Parity check disabled |
W9 |
pins 2 & 3 closed | |
|
Bus speed select fast |
SW1/2 |
On | |
|
Bus speed select normal |
SW1/2 |
Off | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
256KB 1 |
(4) 44256 |
NONE |
NONE |
NONE |
|
256KB |
NONE |
NONE |
(2) 256K x 9 |
NONE |
|
512KB 2 |
(4) 44256 |
NONE |
NONE |
NONE |
|
512KB |
NONE |
NONE |
(2) 256K x 9 |
(2) 256K x 9 |
|
512KB |
NONE |
NONE |
(2) 1M x 9 |
NONE |
|
640KB 3 |
(4) 44256 |
(4) 4464 |
NONE |
NONE |
|
640KB |
NONE |
NONE |
(2) 256K x 9 |
(2) 256K x 9 |
|
640KB |
NONE |
NONE |
(2) 1M x 9 |
NONE |
|
1MB 2 |
(4) 44256 |
(4) 44256 |
NONE |
NONE |
|
1MB |
NONE |
NONE |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
NONE |
NONE |
(2) 1M x 9 |
NONE |
|
4MB |
NONE |
NONE |
(2) 1M x 9 |
(2) 1M x 9 |
|
Note:If using only SIMMs don't install any chips in P-0 or P-1. Note 1 :If parity checking is enabled, install (2) 41256 in P-0Note 2 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 41256 in P-1Note 3 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 4164 in P-0 | ||||
|
DRAM SWITCH CONFIGURATION | |||
|
Size |
SW1/1 |
SW1/2 |
SW1/3 |
|
256KB 1 |
On |
On |
On |
|
256KB |
On |
On |
On |
|
512KB 2 |
On |
Off |
On |
|
512KB |
On |
Off |
On |
|
512KB |
Off |
On |
On |
|
640KB 3 |
On |
On |
Off |
|
640KB |
On |
On |
Off |
|
640KB |
Off |
Off |
On |
|
1MB 2 |
On |
Off |
Off |
|
1MB |
On |
Off |
Off |
|
2MB |
Off |
On |
Off |
|
4MB |
Off |
Off |
Off |