UNIDENTIFIED
S486V
Processor | 80486SX/80487SX/80486DX/80486DX2 |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)/80(internal)MHz |
Chip Set | SIS |
Max. Onboard DRAM | 32MB |
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 |
Speaker | JP13 | External battery | JP22 |
Turbo LED | JP14 | Reset switch | JP24 |
Turbo switch | JP15 | 32-bit VESA local bus slots | SL1 - SL3 |
Power LED & keylock | JP19 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
Monitor type select color | JP20 | Closed | |
Monitor type select monochrome | JP20 | Open | |
» | CMOS memory normal operation | JP21 | pins 1 & 2 closed |
CMOS memory clear | JP21 | pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (1) 256K x 36 | NONE |
2MB | (1) 256K x 36 | (1) 256K x 36 |
2MB | (1) 512K x 36 | NONE |
4MB | (1) 512K x 36 | (1) 512K x 36 |
4MB | (1) 1M x 36 | NONE |
6MB | (1) 512K x 36 | (1) 1M x 36 |
8MB | (1) 1M x 36 | (1) 1M x 36 |
8MB | (1) 2M x 36 | NONE |
16MB | (1) 2M x 36 | (1) 2M x 36 |
16MB | (1) 4M x 36 | NONE |
18MB | (1) 512K x 36 | (1) 4M x 36 |
20MB | (1) 1M x 36 | (1) 4M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 |
CACHE CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | TAG (U11) | TAG (U60) |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 32K x 8 | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||||
Size | JP8 | JP9 | JP10 | JP11 | JP12 | JP61 | JP86 |
64KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
256KB | 1 & 2 | 1 & 2 | 2 & 3 | Open | 1 & 2 | 1 & 2 | 1 & 2 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||
Type | JP2 | JP3 | JP4 |
80486SX | Open | pins 2 & 3 closed | Open |
80487SX | Closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX2 | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
CPU SPEED CONFIGURATION | |||
Speed | JP16 | JP17 | JP18 |
20MHz | Open | Open | Open |
25MHz | Closed | Open | Open |
33MHz | Closed | Closed | Closed |
40MHz | Closed | Closed | Open |
50MHz | Open | Open | Closed |
50iMHz | Closed | Open | Open |
66iMHz | Closed | Open | Closed |
80iMHz | Open | Closed | Closed |
VL BUS SPEED CONFIGURATION | ||
CPU speed | JP25 | JP26 |
<= 33MHz | pins 1 & 2 closed | pins 1 & 2 closed |
> 33MHz | pins 2 & 3 closed | pins 2 & 3 closed |