YL-A09S/YL-A09H Motherboard Settings and Configuration
UNIDENTIFIED
YL-A09S/YL-A09H
Processor | 80286 |
Processor Speed | 16MHz |
Chip Set | Headland |
Max. Onboard DRAM | 5MB |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP1 | Reset switch | JP8 |
Power LED & keylock | JP6 | Turbo LED | JP9 |
Speaker | JP7 | Turbo switch | JP10 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
Internal delay select GC113 | F13 | pins 2 & 3 closed | |
Internal delay select GC103 | F13 | pins 1 & 2 closed | |
| » | Factory configured - do not alter | JP5 | N/A |
BIOS type select 27128 | JP13 | pins 1 & 2 closed | |
BIOS type select 27256 | JP13 | pins 2 & 3 closed | |
| » | NPU mode select synchronous with CPU | JP14 | pins 2 & 3 closed |
NPU mode select synchronous with oscillator installed at Y3 | JP14 | pins 1 & 2 closed | |
| » | Parity check enabled | JP15 | pins 1 & 2 closed |
Parity check disabled | JP15 | pins 2 & 3 closed | |
| » | Monitor type select color | SW1/5 | On |
Monitor type select monochrome | SW1/5 | Off | |
| » | Shadow RAM enabled | SW1/6 | Off |
Shadow RAM disabled | SW1/6 | On | |
| » | Bus speed select fast | SW1/7 | Off |
Bus speed select slow | SW1/7 | On | |
DRAM CONFIGURATION | ||||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 | Bank 5 |
512KB | (4) 44256 | NONE | NONE | NONE | NONE | NONE |
512KB | NONE | NONE | NONE | NONE | (2) 256K x 9 | NONE |
1MB | (4) 44256 | (4) 44256 | NONE | NONE | NONE | NONE |
1MB | NONE | NONE | NONE | NONE | (2) 256K x 9 | (2) 256K x 9 |
1.5MB | (4) 44256 | (4) 44256 | (4) 44256 | NONE | NONE | NONE |
1.5MB | NONE | NONE | (4) 44256 | NONE | (2) 256K x 9 | (2) 256K x 9 |
2MB | (4) 44256 | (4) 44256 | (4) 44256 | (4) 44256 | NONE | NONE |
2MB | NONE | NONE | (4) 44256 | (4) 44256 | (2) 256K x 9 | (2) 256K x 9 |
2MB | NONE | NONE | NONE | NONE | (2) 1M x 9 | NONE |
4MB | NONE | NONE | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 |
5MB | NONE | NONE | (4) 44256 | (4) 44256 | (2) 1M x 9 | (2) 1M x 9 |
Note:Locations of Banks 0, 1, 2, & 3 are unidentified. | ||||||
DRAM JUMPER/SWITCH CONFIGURATION | ||||||
Size | JP11 | JP12 | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
512KB | 2 & 3, 5 & 6, 8 & 9 | 2 & 3, 5 & 6, 8 & 9 | On | Off | Off | Off |
512KB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | On | Off | Off | Off |
1MB | 2 & 3, 5 & 6, 8 & 9 | 2 & 3, 5 & 6, 8 & 9 | Off | On | Off | Off |
1MB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | Off | On | Off | Off |
1.5MB | 2 & 3, 5 & 6, 8 & 9 | 2 & 3, 5 & 6, 8 & 9 | Off | Off | On | Off |
1.5MB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | Off | Off | On | Off |
2MB | 2 & 3, 5 & 6, 8 & 9 | 2 & 3, 5 & 6, 8 & 9 | Off | On | On | Off |
2MB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | Off | On | On | Off |
2MB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | Off | Off | Off | On |
4MB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | Off | On | Off | On |
5MB | 1 & 2, 4 & 5, 7 & 8 | 1 & 2, 4 & 5, 7 & 8 | On | On | On | On |
Note:Pins designated should be in the closed postion | ||||||
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