VL-486 Motherboard Settings and Configuration
UNIDENTIFIED
VL-486
Processor | 80486SX/80487SX/ODP487SX/80486DX/80486DX2 |
Processor Speed | 25/33/50(internal)/50/66(internal)MHz |
Chip Set | UMC |
Video Chip Set | None |
Maximum Onboard Memory | 32MB |
Maximum Video Memory | None |
Cache | 128/256KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | BATT | Turbo switch | CN4 |
Power LED & keylock | CN1 | Turbo LED | CN5 |
Speaker | CN2 | Auxiliary keyboard connector | KBD |
Reset switch | CN3 | 32-bit VESA local bus slots | SL1 & SL2 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Battery type select internal | BATT | Pins 2 & 3 closed | |
Battery type select external | BATT | Closed | |
CMOS memory clear | BATT | Pins 3 & 4 closed | |
Monitor type select color | C/M | Closed | |
Monitor type select monochrome | C/M | Open | |
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 |
Note: The location of banks 0 & 1 is unidentified. | ||
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
128KB | (4) 32K x 8 | None | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size | JS3 | JS4 | JS5 | JS6 |
128KB | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
256KB | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
CPU SPEED SELECTION | |||||
Speed | JC2 | JC3 | JF2 | JF3 | JF5 |
25MHz | Open | 2 & 3 | Closed | Closed | Open |
33MHz | Open | 2 & 3 | Open | Closed | Closed |
50iMHz | Open | 2 & 3 | Closed | Closed | Open |
50MHz | Closed | 1 & 2 | Open | Open | Open |
66iMHz | Open | 2 & 3 | Open | Closed | Closed |
Note: Pins designated should be in the closed position. | |||||
CPU TYPE SELECTION | ||
Type | JC5 | JC6 |
80486SX | Pins 2 & 3 closed | Open |
80487SX | Pins 1 & 2, 3 & 4 closed | Pins 2 & 3 closed |
ODP487SX | 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 |
VL BUS WAIT STATE SELECTION | ||
Setting | J2 | |
| » | 0 | Open |
1 | Closed | |
VL BUS SPEED SELECTION | |
Speed | J1 |
<= 33MHz | Open |
>33 MHz | Closed |
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