SOYO COMPUTER CO., LTD.
SY-024B1/B2
Processor | 80386DX/CX486DLC/80486SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | None |
NPU Options | 80387 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J17 | External battery | J20 |
Speaker | J18 | Turbo switch | J21 |
Reset switch | J19 | Turbo LED | J22 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select monochrome | JP3 | Open |
Monitor type select color | JP3 | 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) 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 | Bank 1 | TAG (U22) | TAG (U23) |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | NONE |
128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | NONE |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | NONE |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 8K x 8 | (1) 8K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JP5 | JP6 | JP7 | JP8 | JP9 | JP10 |
64KB | Open | Open | Open | Open | Open | 2 & 3 |
128KB | Closed | Closed | Closed | Open | Open | 1 & 2 |
256KB | Closed | Closed | Closed | Closed | Closed | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||||||||
Type | JP4 | JP11 | JP12 | JP13 | JP14 | JP15 | JP16 | JP18 | JP31 |
80386DX | Closed | 1 & 2 | Open | 2 & 3 | N/A | N/A | N/A | 2 & 3 | Closed |
CX486DLC | Closed | 1 & 2 | Closed | 2 & 3 | N/A | N/A | N/A | 2 & 3 | Closed |
80486SX | N/A | 2 & 3 | N/A | 1 & 2 | Open | N/A | 2 & 3 | 1 & 2 | Open |
80486DX | N/A | 2 & 3 | N/A | 1 & 2 | Closed | 2 & 3 | 1 & 2 | 1 & 2 | Open |
ODP486SX | N/A | 2 & 3 | N/A | 1 & 2 | Open | N/A | 1 & 2 | 1 & 2 | Open |
80486DX2 | N/A | 2 & 3 | N/A | 1 & 2 | Closed | 2 & 3 | 1 & 2 | 1 & 2 | Open |
Note:Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION | ||||
Speed | JP24 | JP25 | JP26 | JP27 |
25MHz | Closed | Open | Closed | Open |
33MHz | Closed | Closed | Open | Open |
40MHz | Open | Open | Closed | Closed |
50iMHz | Closed | Open | Closed | Open |
50MHz | Closed | Open | Closed | Closed |
66iMHz | Closed | Closed | Open | Open |
CPU CLOCK SOURCE CONFIGURATION | ||
Type | JP17 | JP19 |
AV9107-03 | Open | Closed |
Oscillator installed at OSC1 | pins 1 & 2 closed | pins 2 & 3 closed |