JC INFORMATION SYSTEMS CORPORATION
486 SX/DX MODEL 270
Processor | 80486SX/80487SX/80486DX/80486DX2 |
Processor Speed | 25/33/50(internal)/66(internal)MHz |
Chip Set | C & T |
Max. Onboard DRAM | 32MB |
Cache | 64/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit memory expansion slot |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J11 | 32 bit memory expansion slot | SL1 |
Power LED & keylock | J20 | Reset switch | SW1 |
Speaker | J21 | Turbo switch | SW2 |
Turbo LED | JP11 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Enable onboard battery | JP1 | pins 2 & 3 closed |
Enable external battery | JP1 | Open | |
» | Monitor type select color | JP2 | Closed |
Monitor type select monochrome | JP2 | Open | |
» | Factory configured do not alter | JP3 | N/A |
» | Factory configured do not alter | JP4 | N/A |
» | Factory configured do not alter | JP5 | N/A |
» | Factory configured do not alter | JP7 | N/A |
» | Factory configured do not alter | JP9 | N/A |
» | Factory configured do not alter | JP10 | N/A |
» | Turbo switch not available | JP11 | Closed |
» | Factory configured do not alter | JP12 | N/A |
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) 1M x 9 | (4) 256K x 9 |
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 |
CACHE CONFIGURATION | ||
Size | Bank 0 | TAG |
64KB | (8) 8K x 8 | (1) 8K x 8 |
256KB | (8) 32K x 8 | (1) 32K x 8 |