UNIDENTIFIED
486-VL BUS ANTI-VIRUS
Processor | 80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive |
Processor Speed | 25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | OPTi |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
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 | J1 | Turbo switch | JP28 |
Power LED & keylock | J5 | 32-bit VESA Local bus slot | S1 |
Speaker | J6 | 32-bit VESA Local bus slot | S2 |
Turbo LED | JP24 | Reset switch | SW1 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | Closed |
| Monitor type select monochrome | JP1 | Open |
» | Factory configured - do not alter | JP32 | pins 2 & 3 closed |
» | ADS # signal delay enabled | JP40 | pins 2 & 3 closed |
| ADS # signal delay disabled | JP40 | 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 |
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 x 8/(1) 32K x 8 |
Note:The exact locations of Bank 0 and Bank 1 are unknown. |
CACHE JUMPER CONFIGURATION | ||||
Size | JP7 | JP9 | JP15 | JP22 |
64KB | pins 2 & 3 closed | Open | Open | Open |
128KB | pins 1 & 2 closed | Closed | Closed | Open |
256KB | pins 2 & 3 closed | Closed | Closed | Closed |
Note:The exact locations of Bank 0 and Bank 1 are unknown. |
CPU TYPE CONFIGURATION | ||
Type | JP11 | JP12 |
80486SX | Open | pins 2 & 3 closed |
80487SX | pins 2 & 3 closed | pins 1 & 2 and 3 & 4 closed |
80486DX | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
80486DX2 | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
Pentium Overdrive | pins 2 & 3 closed | pins 1 & 2 and 3 & 4 closed |
CPU SPEED CONFIGURATION | |||
Speed | JP10 | JP16 | JP23 |
25MHz | Open | pins 2 & 3 closed | Closed |
33MHz | Closed | pins 2 & 3 closed | Open |
40MHz | Open | pins 2 & 3 closed | Open |
50i MHz | Open | pins 2 & 3 closed | Closed |
50MHz | Open | pins 1 & 2 closed | Closed |
66i MHz | Closed | pins 2 & 3 closed | Open |
VESA WAIT STATE/BUS SPEED CONFIGURATION | |||
CPU speed | Wait states | J20 | J21 |
< 33MHz | 0 wait states | Closed | Closed |
> 33MHz | 1 wait state | Open | Open |
VL-BUS MASTER/SLAVE CONFIGURATION | |||
Setting | JP13 | JP18 | |
» | Slave mode | Closed | Open |
| Master & slave | Closed | Open |
Note:For VL-Bus device to support both master and slave mode, an additional PAL must be inserted in U43 |
VL-BUS SETUP MODE CONFIGURATION | |||
Setting | JP29 | JP39 | |
» | Setup 0 | pins 1 & 2 closed | pins 1 & 2 closed |
| Setup 1 | pins 1 & 2 closed | pins 2 & 3 closed |
| Setup 2 | pins 2 & 3 closed | pins 2 & 3 closed |