MB-1420C-CH/1433C-CH Motherboard Settings and Configuration
BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1420C-CH/1433C-CH
Processor | 80486SX/80486DX |
Processor Speed | 20/33MHz |
Chip Set | C & T |
Max. Onboard DRAM | 32MB |
Cache | 64/128KB |
BIOS | AMI |
Dimensions | 327mm x 218mm |
I/O Options | None |
NPU Options | 4167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | J1 | Turbo LED | J4 |
Power LED & keylock | J2 | Turbo switch | J5 |
Reset switch | J3 | External battery | J6 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
| » | CMOS memory normal operation | W4 | pins 2 & 3 closed |
CMOS memory clear | W4 | pins 1 & 2 closed | |
| » | Monitor type select color | W5 | Closed |
Monitor type select monochrome | W5 | 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 |
5MB | (4) 1M x 9 | (4) 256K 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 |
17MB | (4) 256K x 9 | (4) 4M x 9 |
20MB | (4) 1M x 9 | (4) 4M x 9 |
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 (U21) | TAG (U22) |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 32K x 8 | NONE |
Note:Bank 0 = U8, U10, U12, & U14. With 16MB or more of DRAM, 128KB of cache must be installed. | ||||
CACHE JUMPER CONFIGURATION | |
Size | W1 |
64KB | pins 2 & 3 closed |
128KB | pins 1 & 2 closed |
CPU TYPE CONFIGURATION | ||
Type | W2 | W3 |
80486SX-20 | Open | Closed |
80487SX-20 | Closed | Open |
80486DX-33 | Open | Open |
POWER GOOD CONFIGURATION | ||
Type | W6 | W7 |
Signal detect from power supply | pins 1 & 2 closed | pins 1 & 2 closed |
Signal detect from board | pins 2 & 3 closed | pins 2 & 3 closed |
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