J-BOND COMPUTER SYSTEMS CORPORATION
486-33/25/20E
Processor | 80486SX/80487SX/80486DX/80486DX2/P24T |
Processor Speed | 20/25/33/50(internal)/66(internal)MHz |
Chip Set | OPTI |
Video Chip Set | None |
Maximum Onboard Memory | 32MB |
Maximum Video Memory | None |
Cache | None |
BIOS | AMI/Award |
Dimensions | 254mm x 218mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Turbo switch | J5 |
Reset switch | J2 | Speaker | J6 |
Turbo LED | J3 | Power LED & keylock | J7 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Turbo enabled (selectable with turbo switch on case) | X4 | Pins 1 & 2 closed | |
Turbo enabled (selectable through keyboard CTRL, ALT +/- | X4 | Pins 2 & 3 closed | |
Turbo enabled (continuous turbo mode) | X4 | Open |
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 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CPU TYPE SELECTION | |||||
Type | W1 | W2 | W3 | W4 | W5 |
80486SX | Open | Open | Open | Closed | Open |
80487SX | Open | Closed | Closed | Open | Closed |
80486DX | Closed | Open | Closed | Open | Closed |
80486DX2 | Closed | Open | Closed | Open | Closed |
P24T | Open | Closed | Closed | Open | Closed |