BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1425/1433/1440/1450UHT VER. 3 & ABOVE
Processor |
CX486M6/80486SX/CX486M7/UMC486/80486DX/80486DX2/80486DX4/ Pentium Overdrive |
Processor Speed |
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz |
Chip Set |
Unidentified |
Max. Onboard DRAM |
128MB |
Cache |
128/256/512/1024KB |
BIOS |
Award |
Dimensions |
330mm x 218mm |
I/O Options |
32-bit VESA local bus slots (2), 32-bit PCI slots (3) |
NPU Options |
None |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
JP8 |
Turbo switch |
JP15 (pins 14 - 15) |
Speaker |
JP15 (pins 1 - 4) |
+5v ground |
JP15 (pins 17 - 18) |
Power LED & keylock |
JP15 (pins 5 - 9) |
32-bit PCI slots |
PC1 - PC3 |
Turbo LED |
JP15 (pins 10 - 11) |
32-bit VESA local bus slots |
SL1 & SL2 |
Reset switch |
JP15 (pins 12 - 13) |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
CMOS memory normal operation |
JP8 |
Open |
CMOS memory clear |
JP8 |
pins 3 & 4 closed | |
Battery type select external |
JP8 |
Closed | |
» |
Power good signal detect from power supply |
JP10 |
pins 1 & 2 closed |
Power good signal detect from board |
JP10 |
pins 2 & 3 closed | |
» |
Password select normal |
JP16 |
Open |
Password select clear |
JP16 |
Closed | |
» |
Factory configured - do not alter |
JP23 |
Open |
» |
Factory configured - do not alter |
JP24 |
Open |
» |
Factory configured - do not alter |
JP25 |
Open |
» |
Factory configured - do not alter |
JP30 |
Open |
» |
Factory configured - do not alter |
JP31 |
Open |
» |
Factory configured - do not alter |
JP32 |
Open |
» |
Hardware management select normal operation |
JP40 |
Open |
Hardware management select trigger for SMM mode |
JP40 |
Closed | |
» |
Cyrix CPU clock speed select 2x |
JP43 |
Open |
Cyrix CPU clock speed select 1x |
JP43 |
Closed | |
» |
CPU type select all |
JP60 |
Open |
CPU type select AMD 80486DX2-66/80 only |
JP60 |
Closed | |
Note: The location of JP60 is unidentified. |
DRAM CONFIGURATION | |||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
2MB |
(4) 512K x 9 |
NONE |
NONE |
2MB |
NONE |
(1) 512K x 36 |
NONE |
2MB |
NONE |
NONE |
(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 |
NONE |
6MB |
(4) 1M x 9 |
(1) 512 x 36 |
NONE |
6MB |
(4) 1M x 9 |
NONE |
(1) 512 x 36 |
8MB |
(4) 1M x 9 |
(1) 512K 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 |
16MB |
(4) 4M x 9 |
NONE |
NONE |
16MB |
NONE |
(1) 2M x 36 |
(1) 2M x 36 |
16MB |
NONE |
(1) 4M x 36 |
NONE |
16MB |
NONE |
NONE |
(1) 4M x 36 |
24MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
DRAM CONFIGURATION (CON’T) | |||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
24MB |
(4) 4M x 9 |
(1) 2M x 36 |
NONE |
24MB |
(4) 4M x 9 |
NONE |
(1) 2M x 36 |
32MB |
(4) 4M x 9 |
(1) 2M x 36 |
(1) 2M x 36 |
32MB |
(4) 4M x 9 |
(1) 4M x 36 |
NONE |
32MB |
(4) 4M x 9 |
NONE |
(1) 4M x 36 |
32MB |
(4) 8M x 9 |
NONE |
NONE |
32MB |
NONE |
(1) 4M x 36 |
(1) 4M x 36 |
32MB |
NONE |
(1) 8M x 36 |
NONE |
32MB |
NONE |
NONE |
(1) 8M x 36 |
64MB |
(4) 16M x 9 |
NONE |
NONE |
64MB |
NONE |
(1) 8M x 36 |
(1) 8M x 36 |
128MB |
(4) 16M x 9 |
(1) 8M x 36 |
(1) 8M x 36 |
CACHE CONFIGURATION | |||
Size |
Bank 0 |
Bank 1 |
TAG |
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
512KB |
(4) 64K x 8 |
(4) 64K x 8 |
(1) 32K x 8 |
1MB |
(4) 128K x 8 |
(4) 128K x 8 |
(1) 64K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size |
JP22 |
JP34 |
JP35 |
JP36 |
128KB |
1 & 2 |
Open |
1 & 2 |
2 & 3 |
256KB |
1 & 2, 3 & 4 |
Open |
2 & 3 |
1 & 2 |
512KB |
1 & 2, 3 & 4, 5 & 6 |
3 & 4 |
2 & 3 |
1 & 2 |
1MB |
1 & 2, 3 & 4, 5 & 6, 7 & 8 |
1 & 2, 3 & 4 |
2 & 3 |
1 & 2 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | ||
Type |
JP19 |
JP20 |
AMD |
pins 2 & 3 closed |
pins 1 & 2 closed |
Cyrix |
pins 1 & 2 closed |
pins 2 & 3 closed |
Intel |
pins 1 & 2 closed |
pins 1 & 2 closed |
CPU TYPE CONFIGURATION | |||||
Type |
JP37 |
JP38 |
JP39 |
JP41 |
JP42 |
CX486M6 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
3 & 4 |
2 & 3 |
2 & 3 |
AM486 |
Open |
2 & 3 |
1 & 2 |
1 & 2 |
Open |
80486SX |
Open |
2 & 3 |
1 & 2 |
Open |
Open |
CX486M7 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
3 & 4 |
2 & 3 |
2 & 3 |
UMC486 |
Open |
2 & 3 |
1 & 2 |
1 & 2 |
Open |
SL80486 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
3 & 4 |
2 & 3 |
2 & 3 |
80486DX |
Open |
1 & 2, 3 & 4 |
1 & 2 |
2 & 3 |
Open |
80486DX2 |
Open |
1 & 2, 3 & 4 |
1 & 2 |
2 & 3 |
Open |
80486DX4 |
2 & 3, 4 & 5 |
1 & 2, 3 & 4 |
3 & 4 |
2 & 3 |
1 & 2, 3 & 4 |
Pentium Overdrive |
2 & 3, 4 & 5 |
1 & 2, 3 & 4 |
3 & 4, 5 & 6 |
2 & 3 |
1 & 2 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | ||||
Type |
JP44 |
JP45 |
JP46 |
JP47 |
CX486M6 |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
AM486 |
Open |
pins 2 & 3 closed |
pins 3 & 4 closed |
Open |
80486SX |
Open |
Open |
Open |
Open |
CX486M7 |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
UMC486 |
Open |
pins 2 & 3 closed |
pins 3 & 4 closed |
Open |
SL80486 |
Open |
pins 1 & 2 closed |
Open |
Open |
80486DX |
Open |
Open |
Open |
Open |
80486DX2 |
Open |
Open |
Open |
Open |
80486DX4 |
pins 3 & 4 closed |
pins 1 & 2 closed |
Open |
Open |
Pentium Overdrive |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
CPU SPEED CONFIGURATION | |
Speed |
JP33 |
25MHz |
pins 1 & 2 closed |
33MHz |
pins 1 & 2, 3 & 4, 5 & 6 closed |
40MHz |
pins 1 & 2, 3 & 4 closed |
50iMHz |
pins 1 & 2 closed |
50MHz |
pins 5 & 6 closed |
66iMHz |
pins 1 & 2, 3 & 4, 5 & 6 closed |
75iMHz |
pins 1 & 2 closed |
100iMHz |
pins 1 & 2, 3 & 4, 5 & 6 closed |
CPU CLOCK CONFIGURATION | |
Speed |
JP48 |
2x |
pins 2 & 3 closed |
2.5x |
pins 1 & 2 closed |
3x |
Open |
CPU VOLTAGE CONFIGURATION | |||||
Voltage |
JP29 |
JP49 |
JP50 |
JP51 |
JP52 |
3.3v |
Open |
Open |
Open |
Closed |
Closed |
5v |
pins 1 & 2, 3 & 4 closed |
Closed |
Closed |
Open |
Open |
VESA WAIT STATE CONFIGURATION | |
Wait states |
JP53 |
0 wait states |
Open |
1 wait state |
Closed |
BUS SPEED CONFIGURATION | |
CPU speed |
JP54 |
<= 33MHz |
Open |
> 33MHz |
Closed |