80486VESA (03-0030X-02) Motherboard Settings and Configuration
FREE COMPUTER TECHNOLOGY, INC.
80486VESA (03-0030X-02)
Device Type | Mainboard |
Processor | 80486SX/80486SX2/80487SX/ODP486/80486DX/80486DX2/ 80486DX3/P24T |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | SIS 461 |
Video Chip Set | None |
Maximum Onboard Memory | 32MB |
Maximum Video Memory | 1MB |
Cache | 64/128/256KB |
BIOS | Unidentified |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP1 | Reset switch | JP17 |
Power saving | JP2 | Turbo LED | JP18 |
Power saving | JP3 | Turbo switch | JP19 |
Speaker | JP15 | 32-bit VESA local bus slots | SL1 – SL3 |
Power LED & keylock | JP16 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | JP21 | Unidentified |
SIMM 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) 1M x 9 | (4) 256K x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | None |
17MB | (4) 4M x 9 | (4) 256K x 9 |
20MB | (4) 1M x 9 | (4) 4M x 9 |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | None | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 16K/32K x 8 |
CACHE JUMPER CONFIGURATION | ||
Size | JP11 | JP12 |
64KB | Open | Open |
128KB | Pins 1 & 2 closed | Closed |
256KB | Pins 2 & 3 closed | Closed |
CPU SPEED SELECTION | |||
Speed | JP4 | JP5 | JP6 |
20MHz | Closed | Closed | Open |
25MHz | Closed | Open | Closed |
33MHz | Open | Closed | Closed |
40MHz | Closed | Open | Open |
50iMHz | Closed | Open | Closed |
50MHz | Open | Closed | Open |
66iMHz | Open | Closed | Closed |
CPU TYPE SELECTION | ||
Type | JP7 | JP8 |
80486SX | Pins 2 & 3 closed | Open |
80486SX2 | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
80487SX | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
ODP486 168-pin | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
ODP486 169-pin | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
80486DX | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
80486DX2 | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
80486DX3 | Pins 1 & 2, 3 & 4 closed | Pins 1 & 2 closed |
P24T | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
VL BUS WAIT STATE SELECTION | |
Setting | JP13 |
0 | Open |
1 | Closed |
VL BUS SPEED SELECTION | |
Speed | JP14 |
<= 33MHz | Open |
>33 MHz | Closed |
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