UNIDENTIFIED
486SI4 (M-81)
Processor | 80486SX/80487SX/80486DX/80486DX2 |
Processor Speed | 20/25/33/50(internal)/50/66(internal)MHz |
Chip Set | C & T |
Max. Onboard DRAM | 32MB |
SRAM Cache | 128/256KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit local bus card slot |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo LED | J3 | Reset switch | J6 |
Turbo switch | J4 | Power LED & keylock | J7 |
Speaker | J5 | 32-bit local bus card | S1 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Local bus data size select 32-bits | J8 | pins 1 & 2 closed |
Local bus data size select 16-bits | J8 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP1 | open |
» | Monitor type select color | JP2 | closed |
Monitor type select monochrome | JP2 | open | |
» | Factory configured - do not alter | JP3 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP4 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP5 | closed |
CPU JUMPER CONFIGURATION | |||
CPU | JP6 | JP7 | JP8 |
80486DX | closed | pins 1 & 2 closed | pins 1 & 2 closed |
80487SX | closed | pins 2 & 3 closed | pins 1 & 2 closed |
80486SX | open | open | pins 2 & 3 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 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
SRAM JUMPER CONFIGURATION | ||
Jumper | 128KB | 256KB |
SR1 | pins 2 & 3 closed | pins 2 & 3 closed |
SR2 | pins 2 & 3 closed | pins 2 & 3 closed |
SR3 | pins 2 & 3 closed | pins 2 & 3 closed |
SR4 | pins 1 & 2 closed | pins 2 & 3 closed |
SR5 | pins 1 & 2 closed | pins 2 & 3 closed |
SR6 | pins 2 & 3 closed | pins 2 & 3 closed |
SR7 | pins 2 & 3 closed | pins 2 & 3 closed |
SR8 | pins 1 & 2 closed | pins 2 & 3 closed |
SR9 | pins 1 & 2 closed | pins 2 & 3 closed |
SRAM CONFIGURATION | |||
Size | Cache SRAM | Location | TAG |
128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 8K x 8 |