UNIDENTIFIED
OPTI 80386 SYSTEM BOARD
Processor | 80386DX |
Processor Speed | 25/33MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 16MB |
Cache | 32/64KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387SX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo LED | J14 | Power LED & keylock | J18 |
Reset switch | J16 | Speaker | J19 |
Turbo switch | J17 | Riser Card | S1 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | J2 | Closed |
Monitor type select monochrome | J2 | Open | |
» | Battery type select internal | J5 | pins 2 & 3 closed |
Battery type select external | J5 | pins 1 & 4 closed | |
» | Weitek 3167 installed | J6 | Closed |
Weitek 3167 not installed | J6 | Open | |
» | Cache type select pipeline | J7 | pins 2 & 3 closed |
Cache type select non-pipeline | J7 | pins 1 & 2 closed | |
» | NPU enabled | J8 | pins 1 & 2 closed |
NPU disabled | J8 | pins 2 & 3 closed | |
» | Factory configured - do not alter | J10 | pins 1 & 2 closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | NONE | NONE | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE |
3MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE |
4MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE | NONE | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE |
5MB | (4) 1M x 9 | (4) 256K x 9 | NONE | NONE |
6MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | NONE |
6MB | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 | NONE |
6MB | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE |
7MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 |
7MB | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 |
7MB | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
9MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
9MB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 | NONE |
9MB | (4) 1M x 9 | (4) 256K x 9 | (4) 1M x 9 | NONE |
10MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 |
10MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 |
10MB | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 | (4) 256K x 9 |
10MB | (4) 1M x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 256K x 9 |
12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
13MB | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
13MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 256K x 9 |
13MB | (4) 1M x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
Note: Bank 2 and Bank 3 are on the riser card. |
CACHE CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | TAG0 | TAG1 |
32KB | (4) 8K x 8 | NONE | (3) 8K x 8 | NONE |
64KB | (4) 8K x 8 | (4) 8K x 8 | (3) 8K x 8 | (1) 8K x 8 |
EXTERNAL MEMORY CARD CONFIGURATION | |
Select | J15 |
32KB installed | pins 1 & 2 closed |
64KB installed | pins 2 & 3 closed |
Not installed | Open |
CACHE SIZE CONFIGURATION | ||
Size | J9 | J13 |
32KB | pins 1 & 2 closed | pins 1 & 2 closed |
64KB | pins 2 & 3 closed | pins 2 & 3 closed |
CLOCK SELECT CONFIGURATION | ||
Select | J3 | J4 |
External | pins 1 & 2 closed | pins 1 & 2 closed |
Internal | pins 2 & 3 closed | pins 2 & 3 closed |