NOVACOR, INC.
OPTIMUM 386SX-16/20/25 REV. B
Processor | 80386SX |
Processor Speed | 16/20/25MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 16MB |
Cache | 16/32/64KB |
BIOS | AMI/MR |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Turbo LED | JP8 |
Speaker | J21 | Reset switch | S1 |
Power LED & keylock | J22 | Turbo switch | S3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JP1 | pins 2 & 3 closed |
CMOS memory clear | JP1 | pins 1 & 2 closed | |
» | Monitor type select color (AMI BIOS) | JP2 | Closed |
Monitor type select monochrome (AMI BIOS) | JP2 | Open | |
» | Password enabled (MR BIOS) | JP2 | Closed |
Password disabled (MR BIOS) | JP2 | Open |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (2) 256K x 9 | (2) 256K x 9 | NONE | NONE |
2MB | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 |
2MB | (2) 1M x 9 | NONE | NONE | NONE |
3MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 | NONE |
4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE |
5MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 | (2) 1M x 9 |
6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | NONE |
8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
9MB | (2) 256K x 9 | (2) 256K x 9 | (2) 4M x 9 | NONE |
10MB | (2) 1M x 9 | (2) 4M x 9 | NONE | NONE |
12MB | (2) 1M x 9 | (2) 1M x 9 | (2) 4M x 9 | NONE |
16MB | (2) 4M x 9 | (2) 4M x 9 | NONE | NONE |
SRAM CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
16KB | (2) 8K x 8 | NONE | (2) 4K x 4 |
32KB | (2) 8K x 8 | (2) 8K x 8 | (2) 16K x 4 |
64KB | (2) 32K x 8 | NONE | (2) 16K x 4 |
SRAM JUMPER CONFIGURATION | |||||
Size | JP3 | JP4 | JP5 | JP6 | JP7 |
16KB | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
32KB | 2 & 3 | 1 & 2 | 1 & 2 | Closed | Open |
64KB | 2 & 3 | 2 & 3 | 2 & 3 | Open | Closed |
Note: Pins designated should be in the closed position. |