UNIDENTIFIED
80286 MAIN BOARD
|
Processor |
80286 |
|
Processor Speed |
8/12/16MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
JP1 |
Reset switch |
JP10 |
|
Power LED & keylock |
JP4 |
Turbo switch |
JP12 |
|
External battery |
JP8 |
Speaker |
JP13 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
BIOS type select 27128 |
JP2 |
pins 1 & 2 closed |
|
BIOS type select 27256 |
JP2 |
pins 2 & 3 closed | |
|
|
Monitor type select monochrome |
JP3 |
pins 1 & 2 closed |
|
Monitor type select color |
JP3 |
pins 2 & 3 closed | |
|
|
Battery type select internal |
JP7 |
pins 2 & 3 closed |
|
Battery type select external |
JP7 |
pins 1 & 2 closed | |
|
|
Power good signal detect from board |
JP9 |
pins 2 & 3 closed |
|
Power good signal detect from power supply |
JP9 |
pins 1 & 2 closed | |
|
|
Turbo switch disabled |
JP12 |
Closed |
|
Turbo switch enabled |
JP12 |
Open | |
|
|
Parity check disabled |
JP14 |
pins 2 & 3 closed |
|
Parity check enabled |
JP14 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION (SIPP MEMORY) | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
DRAM CONFIGURATION (DIP MEMORY) | ||||
|
Size |
Bank 0A |
Parity A |
Bank 1B |
Parity B |
|
512KB |
(4) 44256 |
(2) 41256 |
NONE |
NONE |
|
640KB |
(4) 44256 |
(2) 41256 |
(4) 4464 |
(2) 4164 |
|
1MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
|
DRAM CONFIGURATION (DIP & SIMM MEMORY) | ||||||
|
Size |
Bank 0 |
Bank 1 |
Bank 0A |
Parity A |
Bank 1B |
Parity B |
|
640KB |
(2) 256K x 9 |
NONE |
(4) 4464 |
(2) 4164 |
NONE |
NONE |
|
DRAM SWITCH CONFIGURATION | |||
|
Size |
SW1/1 |
SW1/2 |
SW1/3 |
|
512KB (SIPP) |
On |
On |
Off |
|
512KB (DIPP) |
On |
On |
On |
|
640KB |
On |
Off |
Off |
|
1MB |
On |
Off |
On |
|
2MB |
Off |
On |
On |
|
4MB |
Off |
Off |
On |
|
DRAM WAIT STATE CONFIGURATION | |
|
Wait states |
SW1/4 |
|
0 wait states |
Off |
|
1 wait state |
On |