JOINDATA SYSTEMS, INC.
G486ULB
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 20/25/33/50(internal)/50/66(internal)MHz |
Chip Set | EFAR |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit local bus card slots (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Reset switch | J9 | Power LED & keylock | J13 |
Turbo LED | J10 | External battery | J14 |
Turbo switch | J11 | 32-bit local bus card slots | S15 & S16 |
Speaker | J12 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | J18 | Closed |
» | Factory configured - do not alter | W10 | N/A |
» | Monitor type select color | JP15 | pins 1 & 2 closed |
Monitor type select monochrome | JP15 | 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 |
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 (U38, U39) | TAG (U40) | Dirty(U48) |
64KB | (4) 8K x 8 | (4) 8K x 8 | (2) 16K x 4 | NONE | (1) 16K x 4 |
64KB | (4) 8K x 8 | (4) 8K x 8 | NONE | (1) 8K x 8 | (1) 16K x 4 |
128KB | (4) 32K x 8 | NONE | (2) 16K x 4 | NONE | (1) 16K x 4 |
128KB | (4) 32K x 8 | NONE | NONE | (1) 8K x 8 | (1) 16K x 4 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (2) 16K x 4 | NONE | (1) 16K x 4 |
256KB | (4) 32K x 8 | (4) 32K x 8 | NONE | (1) 32K x 8 | (1) 16K x 4 |
CACHE JUMPER CONFIGURATION | |||||
Size | W14 | W15 | W16 | W17 | W18 |
64KB | 1 & 2 | Open | 1 & 2 | 1 & 2 | 2 & 3 |
128KB | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
256KB | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
Note:Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | ||||
Type | OSC1 | W11 | W12 | W13 |
80486SX-20 | 20MHz | Open | Open | pins 1 & 2 closed |
80486SX-25 | 25MHz | Open | Open | pins 1 & 2 closed |
80486DX-25 | 25MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX-33 | 33MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX-50 | 50MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX2-50 | 25MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX2-66 | 33MHz | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |