PC CALC, INC.
AT-TURBO 286 1800
|
Processor |
80286 |
|
Processor Speed |
15MHz |
|
Chip Set |
None |
|
Max. Onboard DRAM |
1MB |
|
Cache |
None |
|
BIOS |
Phoenix |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J19 |
Turbo switch |
J25 |
|
Power LED & keylock |
J20 |
Turbo LED |
J27 |
|
Reset switch |
J24 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
DRAM select 1 wait state |
E1 |
Open | |
|
DRAM select 0 wait states |
E1 |
Closed | |
|
NPU speed select high |
J29 |
pins 1 & 2 closed | |
|
NPU speed select low |
J29 |
pins 2 & 3 closed | |
|
Monitor type select color |
SW1 |
Closed | |
|
Monitor type select monochrome |
SW1 |
Open | |
|
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 |
Bank 0 |
Bank 1 |
|
512KB |
(18) 41256 |
NONE |
|
640KB |
(18) 41256 |
(18) 4164 |
|
1MB |
(18) 41256 |
(18) 41256 |
|
DRAM JUMPER CONFIGURATION | ||
|
Size |
J17 |
J18 |
|
512KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
640KB |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
1MB (640KB base/384KB extended) |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
1MB (512KB base/512KB extended) |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
EXTERNAL BATTERY CONFIGURATION | ||
|
Size |
J22 |
J31 |
|
Lithium |
Closed |
Open |
|
Rechargeable |
Closed |
Closed |