A-B341/A-B341Q Motherboard Settings and Configuration
MAGITRONICS
A-B341/A-B341Q
Processor | 80386DX |
Processor Speed | 33/40MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
SRAM Cache | 32/64/128/256KB |
BIOS | AMI |
Dimensions | 330.2mm x 218.4mm |
I/O Options | 32-bit proprietary expansion slot |
NPU Options | 80387DX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J10 | 32-bit proprietary expansion slot | S1 |
Power LED & keylock | J23 | Reset switch | SW1 |
Speaker | J24 | Turbo switch | SW2 |
Turbo LED | JP4 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
| » | Monitor type select color | JP1 | closed |
Monitor type select monochrome | JP1 | open | |
| » | CMOS memory normal operation (Internal battery) | JP2 | pins 2 & 3 closed |
CMOS memory normal operation (external battery) | JP2 | open | |
CMOS memory clear | JP2 | pins 1 & 2 closed | |
Bus speed select iOSC/8 (CPU=40MHz) | JP3 | closed | |
Bus speed select iOSC/6 (CPU=33MHz) | JP3 | 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 |
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 |
32KB | (4) 8K x 8 | NONE |
64KB | (4) 8K x 8 | (4) 8K x 8 |
128KB | (4) 32K x 8 | NONE |
256KB | (4) 32K x 8 | (4) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JP5 | JP6 | JP7 | JP8 | JP9 | JP10 |
32KB | 1 & 2 | 1 & 2 | 1 & 2 | open | 2 & 3 | 2 & 3 |
64KB | 2 & 3 | 1 & 2 | 1 & 2 | open | 2 & 3 | 1 & 2 |
128KB | 2 & 3 | 1 & 2 | 2 & 3 | closed | 2 & 3 | 1 & 2 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | closed | 1 & 2 | 1 & 2 |
Notes:Pins designated should be in the closed position. Jumper J3 is present only on earlier versions of the main board | ||||||
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