BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1425/1433/1440/1450UIV (REV. 1)
Processor | CX486M6/80486SX/SL80486SX/CX486DX/AM486DX/UMC U5/80486DX/ SL80486DX/CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/Pentium Overdrive |
Processor Speed | 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 64MB |
Cache | 64/128/256KB |
BIOS | AMI/Award |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3), floppy drive interface, green PC connector |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Speaker | JP15 pins 1 - 4 | +5v ground | JP15 pins 17 & 18 |
Power LED & keylock | JP15 pins 5 - 9 | External battery | JP8 |
Turbo LED | JP15 pins 10 & 11 | Green PC LED | JP24 |
Reset switch | JP15 pins 12 & 13 | Green PC connector | JP25 |
Turbo switch | JP15 pins 14 & 15 | 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 | N/A |
» | DS12887 normal operation | JP32 | Open |
DS12887 clear | JP32 | Closed | |
» | VESA bus slot select synchronous | JP36 | pins 1 & 2 closed |
VESA bus slot select asynchronous | JP36 | pins 2 & 3 closed |
DRAM CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Bank 2 |
1MB | (4) 256K x 9 | NONE | NONE |
1MB | NONE | (1) 256K x 36 | NONE |
1MB | NONE | NONE | (1) 256K x 36 |
2MB | (4) 256K x 9 | (1) 256K x 36 | NONE |
2MB | (4) 256K x 9 | NONE | (1) 256K x 36 |
2MB | NONE | (1) 256K x 36 | (1) 256K x 36 |
2MB | NONE | (1) 512K x 36 | NONE |
2MB | NONE | NONE | (1) 512K x 36 |
3MB | (4) 256K x 9 | (1) 256K x 36 | (1) 256K x 36 |
3MB | (4) 256K x 9 | NONE | (1) 512K x 36 |
3MB | NONE | (1) 256K x 36 | (1) 512K x 36 |
3MB | NONE | (1) 512K x 36 | (1) 256K x 36 |
4MB | (4) 256K x 9 | (1) 256K x 36 | (1) 512K x 36 |
4MB | (4) 1M x 9 | NONE | NONE |
4MB | NONE | (1) 512K x 36 | (1) 512K x 36 |
4MB | NONE | (1) 1M x 36 | NONE |
4MB | NONE | NONE | (1) 1M x 36 |
5MB | (4) 256K x 9 | (1) 1M x 36 | NONE |
5MB | (4) 256K x 9 | NONE | (1) 1M x 36 |
5MB | (4) 1M x 9 | (1) 256K x 36 | NONE |
5MB | (4) 1M x 9 | NONE | (1) 256K x 36 |
5MB | NONE | (1) 256K x 36 | (1) 1M x 36 |
5MB | NONE | (1) 1M x 36 | (1) 256K x 36 |
6MB | (4) 1M x 9 | NONE | (1) 512K x 36 |
6MB | NONE | (1) 1M x 36 | (1) 512K x 36 |
6MB | NONE | (1) 512K x 36 | (1) 1M x 36 |
7MB | (4) 256K x 9 | (1) 1M x 36 | (1) 512K x 36 |
7MB | (4) 1M x 9 | (1) 256K x 36 | (1) 512K x 36 |
8MB | (4) 1M x 9 | (1) 1M x 36 | NONE |
8MB | (4) 1M x 9 | NONE | (1) 1M x 36 |
8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
8MB | NONE | (1) 2M x 36 | NONE |
8MB | NONE | NONE | (1) 2M x 36 |
DRAM CONFIGURATION (CON’T) | |||
Size | Bank 0 | Bank 1 | Bank 2 |
9MB | (4) 256K x 9 | (1) 1M x 36 | (1) 1M x 36 |
9MB | (4) 1M x 9 | (1) 1M x 36 | (1) 256K x 36 |
9MB | (4) 1M x 9 | (1) 256K x 36 | (1) 1M x 36 |
10MB | (4) 1M x 9 | (1) 1M x 36 | (1) 512K x 36 |
12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
12MB | (4) 1M x 9 | NONE | (1) 2M x 36 |
12MB | NONE | (1) 1M x 36 | (1) 2M x 36 |
12MB | NONE | (1) 2M x 36 | (1) 1M x 36 |
16MB | (4) 4M x 9 | NONE | NONE |
16MB | NONE | (1) 4M x 36 | NONE |
16MB | NONE | NONE | (1) 4M x 36 |
17MB | (4) 256K x 9 | (1) 4M x 36 | NONE |
17MB | (4) 256K x 9 | NONE | (1) 4M x 36 |
17MB | (4) 4M x 9 | (1) 256K x 36 | NONE |
17MB | (4) 4M x 9 | NONE | (1) 256K x 36 |
18MB | (4) 256K x 9 | (1) 256K x 36 | (1) 4M x 36 |
18MB | (4) 256K x 9 | (1) 4M x 36 | (1) 256K x 36 |
19MB | (4) 256K x 9 | (1) 4M x 36 | (1) 512K x 36 |
20MB | (4) 1M x 9 | (1) 4M x 36 | NONE |
20MB | (4) 1M x 9 | NONE | (1) 4M x 36 |
20MB | (4) 4M x 9 | (1) 1M x 36 | NONE |
20MB | (4) 4M x 9 | NONE | (1) 1M x 36 |
21MB | (4) 256K x 9 | (1) 1M x 36 | (1) 4M x 36 |
21MB | (4) 256K x 9 | (1) 4M x 36 | (1) 1M x 36 |
24MB | (4) 1M x 9 | (1) 1M x 36 | (1) 4M x 36 |
24MB | (4) 1M x 9 | (1) 4M x 36 | (1) 1M x 36 |
32MB | (4) 4M x 9 | (1) 4M x 36 | NONE |
32MB | (4) 4M x 9 | NONE | (1) 4M x 36 |
32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
32MB | NONE | NONE | (1) 8M x 36 |
33MB | (4) 256K x 9 | NONE | (1) 8M x 36 |
33MB | (4) 256K x 9 | (1) 4M x 36 | (1) 4M x 36 |
33MB | (4) 4M x 9 | (1) 4M x 36 | (1) 256K x 36 |
33MB | (4) 4M x 9 | (1) 256K x 36 | (1) 4M x 36 |
34MB | (4) 4M x 9 | (1) 4M x 36 | (1) 512K x 36 |
36MB | (4) 4M x 9 | (1) 4M x 36 | (1) 1M x 36 |
36MB | (4) 4M x 9 | (1) 1M x 36 | (1) 4M x 36 |
36MB | (4) 1M x 9 | NONE | (1) 8M x 36 |
36MB | (4) 1M x 9 | (1) 4M x 36 | (1) 4M x 36 |
48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 |
48MB | (4) 4M x 9 | NONE | (1) 8M x 36 |
48MB | NONE | (1) 4M x 36 | (1) 8M x 36 |
48MB | NONE | (1) 8M x 36 | (1) 4M x 36 |
64MB | NONE | (1) 8M x 36 | (1) 8M x 36 |
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 | JP17 | JP18 |
CX486SX | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4, 5 & 6 | 2 & 3 | Open | 2 & 3, 4 & 5 |
80486SX | Open | 2 & 3 | 2 & 3 | Open | Open |
SL80486SX | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 5 & 6 |
CX486DX | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4 | 1 & 2 | 2 & 3, 4 & 5 |
AM486DX | Open | 2 & 3 | 1 & 2, 3 & 4 | 2 & 3 | Open |
80486DX | Open | 2 & 3 | 1 & 2, 3 & 4 | 1 & 2 | Open |
SL80486DX | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 | 3 & 4, 5 & 6 |
UMC U5S | 2 & 3 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 |
CX486DX2 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4 | 1 & 2 | 2 & 3, 4 & 5 |
AM486DX2 | Open | 2 & 3 | 1 & 2, 3 & 4 | 2 & 3 | Open |
SLAM486DX2 | 1 & 2 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 | 3 & 4, 5 & 6 |
80486DX2 | Open | 2 & 3 | 1 & 2, 3 & 4 | 1 & 2 | Open |
SL80486DX2 | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 | 3 & 4, 5 & 6 |
CX486DX4 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2, 3 & 4 | 1 & 2 | 2 & 3, 4 & 5 |
AM486DX4 | Open | 2 & 3 | 1 & 2, 3 & 4 | 2 & 3 | Open |
SLAM486DX4 | 1 & 2 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 | 3 & 4, 5 & 6 |
80486DX4 | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 | 3 & 4, 5 & 6 |
P24D | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 | 1 & 2 | 3 & 4, 5 & 6 |
P24T | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 | 2 & 3 | 5 & 6 |
Note: Pins designated should be in the closed position. All jumpers may not be present on all revisions. |
CPU TYPE CONFIGURATION (CON’T) | |||||
Type | JP19 | JP20 | JP23 | JP35 | JP40 |
CX486SX | 2 & 3, 4 & 5 | Open | Open | Open | Open |
80486SX | Open | Open | Open | Closed | Open |
SL80486SX | 1 & 2, 3 & 4 | Open | Open | Closed | Open |
CX486DX | 2 & 3 | Open | Open | Open | Open |
AM486DX | Open | 1 & 2 | Open | Closed | Open |
80486DX | Open | Open | Open | Closed | Open |
SL80486DX | 1 & 2, 3 & 4 | Open | Open | Open | Open |
UMC U5S | Open | Open | Open | Closed | Open |
CX486DX2 | 2 & 3 | Open | Open | Open | Open |
AM486DX2 | Open | 1 & 2 | Open | Closed | Open |
SL AM486DX2 | 1 & 2, 3 & 4 | Open | Open | Open | Closed |
80486DX2 | Open | Open | Open | Closed | Open |
SL80486DX2 | 1 & 2, 3 & 4 | Open | Open | Open | Open |
CX486DX4 | 2 & 3 | Open | Open | Open | Open |
AM486DX4 | Open | 1 & 2 | Open | Closed | Open |
SL AM486DX4 | 1 & 2, 3 & 4 | Open | Open | Open | Closed |
80486DX4 | 1 & 2, 3 & 4 | Open | Open | Open | Open |
P24D | 1 & 2, 3 & 4 | Open | Open | Open | Open |
P24T | 1 & 2, 3 & 4 | Open | Open | Open | Open |
Note: Pins designated should be in the closed position. All jumpers may not be present on all revisions. |
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 |
80iMHz | Open | Closed | Closed |
100iMHz | Closed | Closed | Closed |
CPU VOLTAGE CONFIGURATION | |||||
Voltage | JP14 | JP16 | JP27 | JP38 | JP39 |
3.3v - 3.6v | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | Open |
4v | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | Closed |
5v | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | Open |
Note: Pins designated should be in the closed position. |
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 |