YOUNG MICRO SYSTEMS, INC.
VS486S
Processor | 80486SX/80486DX/80486DX2 |
Processor Speed | 25/33/40/50(internal)/66(internal)MHz |
Chip Set | Symphony |
Max. Onboard DRAM | 64MB |
Cache | 64/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 4167 |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | CN1 | Turbo LED | CN4 |
Power LED & keylock | CN2 | Turbo switch | CN5 |
Reset switch | CN3 | ||
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (4) 256K x 9 | NONE | NONE | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE |
4MB | (4) 1M x 9 | NONE | NONE | NONE |
5MB | (4) 1M x 9 | (4) 256K x 9 | NONE | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE | NONE | NONE |
32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
CACHE CONFIGURABLE | |
Size | Cache |
64KB | (9) 8K x 8 |
256KB | (9) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||
Size | J2 | J5 | J8 |
64KB | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
256KB | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
Note:This board is direct but not user upgradable and has two factory defauts to incorporate the 486DX/33MHz or 486DX/50MHz. | |||