AT-TURBO 286 1800 Motherboard Settings and Configuration
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 |
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