CORE PACIFIC ELECTRONICS, INC.
486 MAINBOARD
Processor | 80486DX |
Processor Speed | 33MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 40MB |
Cache | 64/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP3 | Turbo LED | JP15 |
Reset switch | JP13 | Speaker | JP16 |
Turbo switch | JP14 | Power LED & keylock | JP17 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Power good signal detect from board | JP1 | pins 2 & 3 closed |
Power good signal detect from power supply | JP1 | pins 1 & 2 closed | |
» | Monitor type select color | JP2 | Closed |
Monitor type select monochrome | JP2 | Open | |
» | Factory configured - do not alter | JP12 | Open |
» | CMOS memory normal operation | JP18 | pins 1 & 2 closed |
CMOS memory clear | JP18 | pins 2 & 3 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 |
4MB | (4) 1M x 9 | NONE | NONE | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE |
6MB | (4) 256K x 9 | (4) 256K x 9 | (1) 1M x 36 | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
9MB | (4) 256K x 9 | (4) 1M x 9 | (1) 1M x 36 | NONE |
10MB | (4) 256K x 9 | (4) 256K x 9 | (1) 1M x 36 | (1) 1M x 36 |
12MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x 36 | NONE |
13MB | (4) 256K x 9 | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (4) 4M x 9 | NONE | NONE | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 | NONE | NONE |
20MB | (4) 4M x 9 | (4) 1M x 9 | NONE | NONE |
24MB | (4) 1M x 9 | (4) 4M x 9 | (1) 1M x 36 | NONE |
24MB | (4) 4M x 9 | (4) 1M x 9 | (1) 1M x 36 | NONE |
28MB | (4) 1M x 9 | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 |
28MB | (4) 4M x 9 | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
36MB | (4) 4M x 9 | (4) 4M x 9 | (1) 1M x 36 | NONE |
40MB | (4) 4M x 9 | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 |
CACHE CONFIGURATION | |||
Size | Bank 0 | U39 | U40 |
64KB | (8) 8K x 8 | (1) 8K x 8 | (1) 64K x 1 |
256KB | (8) 32K x 8 | (1) 32K x 8 | (1) 64K x 1 |
CACHE JUMPER CONFIGURATION | |||
Size | JP4 | JP5 | JP6 |
64KB | Open | Open | Open |
256KB | Closed | Closed | Closed |
CPU TYPE CONFIGURATION | |||
Type | JP8 | JP9 | JP10 |
80486SX | Open | pins 2 & 3 closed | Open |
80487SX | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX | Closed | pins 1 & 2 closed | pins 2 & 3 closed |