BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1425/33/40/50 UIV
Processor | 80486SX/CX486M6/CX486M7/AMD486DXL/80486DX/80486DX2/80486DX4/ P24D/Pentium Overdrive |
Processor Speed | 25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 64MB |
Cache | 64/128/256KB |
BIOS | AMI/Award |
Dimensions | 254mm x 220mm |
I/O Options | 32-bit VESA local bus slots (3), green PC connector |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP8 | Turbo switch | JP15E |
Speaker | JP15A | +5vDC | JP15F |
Power LED & keylock | JP15B | Green PC LED | JP24 |
Turbo LED | JP15C | Green PC connector | JP25 |
Reset switch | JP15D | 32-bit VESA local bus slots | SL1 - SL3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JP8 | pins 2 & 3 closed |
CMOS memory clear | JP8 | pins 3 & 4 closed | |
» | Factory configured - do not alter | JP31 | Open |
» | Factory configured - do not alter | JP32 | Open |
DRAM CONFIGURATION | |||
Size | Bank 0/2 | Bank 1/3 | Bank 2 |
1MB | NONE | NONE | (4) 256K x 9 |
1MB | (1) 256K x 36 | NONE | NONE |
1MB | NONE | (1) 256K x 36 | NONE |
2MB | (1) 256K x 36 | NONE | (4) 256K x 9 |
2MB | NONE | (1) 256K x 36 | (4) 256K x 9 |
2MB | (1) 256K x 36 | (1) 256K x 36 | NONE |
2MB | (1) 512K x 36 | NONE | NONE |
2MB | NONE | (1) 512K x 36 | NONE |
3MB | (1) 256K x 36 | (1) 256K x 36 | (4) 256K x 9 |
3MB | NONE | (1) 512K x 36 | (4) 256K x 9 |
3MB | (1) 256K x 36 | (1) 512K x 36 | NONE |
3MB | (1) 512K x 36 | (1) 256K x 36 | NONE |
4MB | (1) 256K x 36 | (1) 512K x 36 | (4) 256K x 9 |
4MB | NONE | NONE | (4) 1M x 9 |
4MB | (1) 512K x 36 | (1) 512K x 36 | NONE |
4MB | (1) 1M x 36 | NONE | NONE |
4MB | NONE | (1) 1M x 36 | NONE |
5MB | (1) 1M x 36 | NONE | (4) 256K x 9 |
5MB | NONE | (1) 1M x 36 | (4) 256K x 9 |
5MB | (1) 256K x 36 | NONE | (4) 1M x 9 |
5MB | NONE | (1) 256K x 36 | (4) 1M x 9 |
5MB | (1) 256K x 36 | (1) 1M x 36 | NONE |
5MB | (1) 1M x 36 | (1) 256K x 36 | NONE |
6MB | NONE | (1) 512K x 36 | (4) 1M x 9 |
6MB | (1) 1M x 36 | (1) 512K x 36 | NONE |
6MB | (1) 512K x 36 | (1) 1M x 36 | NONE |
7MB | (1) 1M x 36 | (1) 512K x 36 | (4) 256K x 9 |
7MB | (1) 256K x 36 | (1) 512K x 36 | (4) 1M x 9 |
8MB | (1) 1M x 36 | NONE | (4) 1M x 9 |
8MB | NONE | (1) 1M x 36 | (4) 1M x 9 |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE |
8MB | (1) 2M x 36 | NONE | NONE |
8MB | NONE | (1) 2M x 36 | NONE |
9MB | (1) 1M x 36 | (1) 1M x 36 | (4) 256K x 9 |
9MB | (1) 1M x 36 | (1) 256K x 36 | (4) 1M x 9 |
9MB | (1) 256K x 36 | (1) 1M x 36 | (4) 1M x 9 |
10MB | (1) 1M x 36 | (1) 512K x 36 | (4) 1M x 9 |
DRAM CONFIGURATION (CON’T) | |||
Size | Bank 0/2 | Bank 1/3 | Bank 2 |
12MB | (1) 1M x 36 | (1) 1M x 36 | (4) 1M x 9 |
12MB | NONE | (1) 2M x 36 | (4) 1M x 9 |
16MB | (1) 1M x 36 | (1) 2M x 36 | (4) 1M x 9 |
16MB | (1) 2M x 36 | (1) 1M x 36 | (4) 1M x 9 |
16MB | NONE | NONE | (4) 4M x 9 |
16MB | (1) 4M x 36 | NONE | NONE |
16MB | NONE | (1) 4M x 36 | NONE |
17MB | (1) 4M x 36 | NONE | (4) 256K x 9 |
17MB | NONE | (1) 4M x 36 | (4) 256K x 9 |
17MB | (1) 256K x 36 | NONE | (4) 4M x 9 |
17MB | NONE | (1) 256K x 36 | (4) 4M x 9 |
18MB | (1) 256K x 36 | (1) 4M x 36 | (4) 256K x 9 |
18MB | (1) 4M x 36 | (1) 256K x 36 | (4) 256K x 9 |
19MB | (1) 4M x 36 | (1) 512K x 36 | (4) 256K x 9 |
20MB | (1) 4M x 36 | NONE | (4) 1M x 9 |
20MB | (1) 4M x 36 | NONE | (4) 4M x 9 |
20MB | NONE | (1) 1M x 36 | (4) 4M x 9 |
21MB | (1) 1M x 36 | (1) 4M x 36 | (4) 256K x 9 |
21MB | (1) 4M x 36 | (1) 1M x 36 | (4) 256K x 9 |
24MB | (1) 1M x 36 | (1) 4M x 36 | (4) 1M x 9 |
24MB | (1) 4M x 36 | (1) 1M x 36 | (4) 1M x 9 |
32MB | (1) 4M x 36 | NONE | (4) 4M x 9 |
32MB | NONE | (1) 4M x 36 | (4) 4M x 9 |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE |
32MB | (1) 8M x 36 | NONE | NONE |
32MB | NONE | (1) 8M x 36 | NONE |
33MB | (1) 8M x 36 | NONE | (4) 256K x 9 |
33MB | NONE | (1) 8M x 36 | (4) 256K x 9 |
33MB | (1) 4M x 36 | (1) 4M x 36 | (4) 256K x 9 |
33MB | (1) 4M x 36 | (1) 256K x 36 | (4) 4M x 9 |
33MB | (1) 256K x 36 | (1) 4M x 36 | (4) 4M x 9 |
34MB | (1) 4M x 36 | (1) 512K x 36 | (4) 4M x 9 |
36MB | (1) 4M x 36 | (1) 1M x 36 | (4) 4M x 9 |
36MB | (1) 1M x 36 | (1) 4M x 36 | (4) 4M x 9 |
48MB | NONE | (1) 8M x 36 | (4) 4M x 9 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (4) 4M x 9 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (4) 4M x 9 |
48MB | NONE | (1) 8M x 36 | (4) 4M x 9 |
48MB | (1) 4M x 36 | (1) 8M x 36 | NONE |
48MB | (1) 8M x 36 | (1) 4M x 36 | NONE |
64MB | (1) 8M x 36 | (1) 8M x 36 | NONE |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
256KB (B) | (4) 64K x 8 | NONE | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size | JP7 | JP9 | JP10 | JP33 |
64KB | Open | Open | pins 2 & 3 closed | Open |
128KB | Open | pins 1 & 2 closed | pins 1 & 2 closed | Closed |
256KB (A) | Closed | pins 2 & 3 closed | pins 2 & 3 closed | Closed |
256KB(B) | Closed | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed | Closed |
CPU TYPE CONFIGURATION | |||
Type | JP11 | JP12 | JP13 |
UMC486 | 2 & 3 | 2 & 3 | 2 & 3 |
CX486M6 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4, 5 & 6 | 2 & 3 |
80486SX | Open | 2 & 3 | 2 & 3 |
CX486M7 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4 |
AMD486DXL | 2 & 3 | 2 & 3 | 1 & 2, 3 & 4 |
80486DX | Open | 2 & 3 | 1 & 2, 3 & 4 |
SL80486DX | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
80486DX4 | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
P24D | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 |
Pentium Overdrive | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION (CON’T) | ||||
Type | JP17 | JP18 | JP19 | JP35 |
UMC486 | 3 & 4 | 1 & 2 | Open | Closed |
CX486M6 | Open | 2 & 3, 4 & 5 | 2 & 3, 4 & 5 | Open |
80486SX | Open | Open | Open | Closed |
CX486M7 | 1 & 2 | 2 & 3, 4 & 5 | 2 & 3 | Open |
AMD486DXL | 1 & 2, 3 & 4 | 1 & 2 | Open | Closed |
80486DX | 1 & 2 | Open | Open | Closed |
SL80486DX | 1 & 2 | 5 & 6 | 1 & 2, 3 & 4 | Open |
80486DX4 | 1 & 2 | 5 & 6 | 1 & 2, 3 & 4 | Open |
P24D | 1 & 2 | 3 & 4, 5 & 6 | 1 & 2, 3 & 4 | Open |
Pentium Overdrive | 2 & 3 | 5 & 6 | 1 & 2, 3 & 4 | Open |
Note: Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION | |||
Speed | JP4 | JP5 | JP6 |
25MHz | Open | Open | Closed |
33MHz | Closed | Closed | Closed |
40MHz | Open | Closed | Closed |
50iMHz | Open | Open | Closed |
50MHz | Closed | Open | Open |
66iMHz | Closed | Closed | Closed |
75iMHz | Open | Open | Closed |
100iMHz | Closed | Closed | Closed |
CPU VOLTAGE CONFIGURATION | |||
Voltage | JP14 | JP16 | JP27 |
3.45v (DX4) | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
5.0v | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
VESA WAIT STATE CONFIGURATION | |
Wait states | JP22 |
0 wait states | Open |
1 wait state | Closed |
BUS SPEED CONFIGURATION | |
CPU speed | JP21 |
<= 33MHz | Open |
> 33MHz | Closed |