UNIDENTIFIED
286-12/16/20
|
Processor |
80286 |
|
Processor Speed |
12/16/20MHz |
|
Chip Set |
Acer |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Reset switch |
CN3 |
|
Speaker |
CN1 |
Turbo switch |
CN4 |
|
Turbo LED |
CN2 |
Power LED & keylock |
CN5 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Coprocessor synchronous with CPU |
J2 |
pins 2 & 3 closed | |
|
Coprocessor asynchronous with CPU (need extra OSC) |
J2 |
pins 1 & 2 closed | |
|
|
8 bit BIOS enabled |
J3 |
Closed |
|
16 bit BIOS enabled |
J3 |
Open | |
|
|
Bus speed select AT clock |
J4 |
Closed |
|
Bus speed select 1/2 CPU clock |
J4 |
Open | |
|
|
Parity check enabled |
J5 |
Open |
|
Parity check disabled |
J5 |
Closed | |
|
|
CMOS memory normal operation |
J7 |
Open |
|
CMOS memory clear |
J7 |
Closed | |
|
|
Monitor type select monochrome |
J8 |
pins 1 & 2 closed |
|
Monitor type select color |
J8 |
pins 2 & 3 closed | |
|
|
Internal battery enabled |
J9 |
pins 2 & 3 closed |
|
External battery enabled |
J9 |
pins 1 & 2 closed | |
|
Note:The exact location of jumper J7 is unidentified by the manufacturer. | |||
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Parity 0 |
Bank 1 |
Parity 1 |
|
512KB |
(4) 44256 |
(2) 41256 |
NONE |
NONE |
|
640KB |
(4) 44256 |
(2) 41256 |
(4) 4464 |
(2) 4164 |
|
640KB |
(2) 256K x 9 |
(2) 41256 |
(4) 4464 |
(2) 4164 |
|
1024KB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 4164 |
|
1024KB |
(2) 256K x 9 |
NONE |
(2) 256K x 9 |
NONE |
|
2048KB |
(2) 1M x 9 |
NONE |
NONE |
NONE |
|
4096KB |
(2) 1M x 9 |
NONE |
(2) 1M x 9 |
NONE |