J-BOND COMPUTER SYSTEMS CORPORATION
486 CACHE
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 20/25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | ETEQ |
Max. Onboard DRAM | 32MB |
Cache | 64/256KB |
BIOS | AMI |
Dimensions | 221mm x 254mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | BATT | Reset switch | RST |
Power LED & keylock | KEYLC | Speaker | SPK |
Turbo LED | LED | Turbo switch | TBS |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CPU speed select switchable at keyboard | JP1 | Closed |
CPU speed select switchable at turbo switch | JP1 | Open | |
» | Battery type select internal | JP7 | Closed |
Battery type select external | JP7 | Open | |
» | CPU speed select iOSC/2 | JP50 | pins 2 & 3 closed |
CPU speed select iOSC/1 | JP50 | 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 |
17MB | (4) 4M x 9 | (4) 256K x 9 |
20MB | (4) 1M x 9 | (4) 4M 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 |
CACHEJUMPER CONFIGURATION | ||||
Size | JP2 | JP3 | JP4 | JP5 |
64KB | Open | pins 1 & 2 closed | Open | pins 1 & 2 closed |
256KB | Closed | pins 2 & 3 closed | Closed | pins 2 & 3 closed |
CPU TYPE CONFIGURATION | |||||
Type | JX1 | JX2 | JX3 | JX4 | JX5 |
80486SX | Open | Open | Open | Closed | Open |
80487SX | Open | Closed | Closed | Open | Closed |
ODP486SX | Open | Closed | Closed | Open | Closed |
80486DX | Closed | Open | Closed | Open | Closed |
80486DX2 | Closed | Open | Closed | Open | Closed |