FRONTIER INDUSTRIAL, INC.
VLSI 82C486
Processor | 80486SX/80486DX |
Processor Speed | 16/20/25/33MHz |
Chip Set | VLSI |
Max. Onboard DRAM | 32MB |
Cache | None |
BIOS | Award |
Dimensions | 220mm x 220mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J3 | Turbo LED | J6 |
Speaker | J4 | Power LED & keylock | J7 |
Turbo switch | J5 | Reset switch | JP1 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JP2 | pins 3 & 4 closed |
CMOS memory clear | JP2 | pins 1 & 2 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CPU TYPE CONFIGURATION | ||||
Type | OSC1 (MHz) | JP3 | JP4 | JP5 |
80486SX-16 | 33MHz | pins 2 & 3 closed | pins 1 & 2 closed | Open |
80486SX-20 | 40MHz | pins 2 & 3 closed | pins 1 & 2 closed | Open |
80486SX-25 | 50MHz | pins 2 & 3 closed | pins 1 & 2 closed | Open |
80486DX-25 | 50MHz | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |
80486DX-33 | 66MHz | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |