IBM CORPORATION
AT-TURBO 286
|
Processor |
80286 |
|
Processor Speed |
6/8/10MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
1MB |
|
Maximum Video Memory |
None |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J19 |
External battery |
J21 |
|
Power LED & keylock |
J20 |
Reset switch |
J24 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Factory configured - do not alter (wait state select) |
J23 |
Unidentified |
|
Monitor type select color |
SW1 |
Pins 2 & 3 closed | |
|
Monitor type select monochrome |
SW1 |
Pins 1 & 2 closed | |
|
BIOS type select 27128 |
U57 |
Pins 1 & 8, 2 & 7 closed | |
|
BIOS type select 27256 |
U57 |
Pins 3 & 6, 4 & 5 closed | |
|
DRAM CONFIGURATION | |||
|
Size |
Type |
Bank 0 |
Bank 1 |
|
512KB |
512KB |
(9) 41256 |
None |
|
640KB |
640KB |
(9) 41256 |
(9) 4164 |
|
1MB |
640KB internal/384KB expansion |
(9) 41256 |
(9) 41256 |
|
1MB |
512KB internal/512KB expansion |
(9) 41256 |
(9) 41256 |
|
DRAM JUMPER CONFIGURATION | ||
|
Size |
J17 |
J18 |
|
512KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
640KB |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
1MB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
1MB |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
CPU SPEED SELECTION | |
|
Speed |
J25 |
|
6MHz |
Pins 2 & 3 closed |
|
8MHz |
Pins 1 & 2 closed |
|
10MHz |
Pins 1 & 2 closed |