BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1425/33/40/50UCV-A
|
Processor |
CX486S/80486SX/80487SX/80486DX/ODP486SX/80486DX2/ Pentium Overdrive |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
Biostar |
|
Max. Onboard DRAM |
64MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP8 |
Power LED & keylock |
JP15E |
|
5V ground |
JP15A |
Speaker |
JP15F |
|
Turbo switch |
JP15B |
32-bit VESA Local bus slot |
V1 |
|
Reset switch |
JP15C |
32-bit VESA Local bus slot |
V2 |
|
Turbo LED |
JP15D |
32-bit VESA Local bus slot |
V3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
CMOS memory normal operation |
JP8 |
pins 2 & 3 closed |
|
CMOS memory clear |
JP8 |
pins 3 & 4 closed | |
|
|
Power good signal detect from power supply |
JP11 |
pins 1 & 2 closed |
|
Power good signal detect from board |
JP11 |
pins 2 & 3 closed | |
|
|
One CPU (PQFP or PGA) on board installed |
JP12 |
pins 1 & 2 closed |
|
Two CPUs (enabled PGA and disabled PQFP) on board installed |
JP12 |
pins 2 & 3 closed | |
|
|
Monitor type select color |
JP14 |
pins 2 & 3 closed |
|
Monitor type select monochrome |
JP14 |
pins 1 & 2 closed | |
|
|
Add on card select normal operation |
JP28 |
pins 1 & 2 closed |
|
Add on card select Weitek 9000 VGA card installed |
JP28 |
pins 2 & 3 closed | |
|
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) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
CACHE CONFIGURATION | ||||
|
Size |
Max Cachable |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
8MB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
16MB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
32MB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
64MB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K x 8 |
|
256KB |
64MB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP5 |
JP6 |
JP7 |
JP9 |
JP10 |
|
32KB |
pins 2 & 3 |
Open |
Open |
Open |
Open |
|
64KB |
pins 1 & 2 |
Open |
Open |
Closed |
Open |
|
128KB |
pins 2 & 3 |
pins 2 & 3 |
Closed |
Closed |
Open |
|
256KB |
pins 1 & 2 |
pins 1 & 2 |
Closed |
Closed |
pins 2 & 3 |
|
256KB |
pins 1 & 2 |
pins 1 & 2 |
Closed |
Closed |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | ||
|
Type |
JP16 |
JP17 |
|
CX486S |
Open |
pins 2 & 3 closed |
|
80486SX |
Open |
pins 2 & 3 closed |
|
80487SX |
pins 2 & 3 closed |
pins 1 & 2 and 3 & 4 closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 closed |
|
ODP486SX |
pins 2 & 3 closed |
pins 1 & 2 and 3 & 4 closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 closed |
|
Pentium Overdrive |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 closed |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP21 |
JP22 |
JP23 |
JP27 |
|
25MHz |
Closed |
Open |
Closed |
Open |
|
33MHz |
Closed |
Closed |
Open |
Open |
|
40MHz |
Open |
Open |
Closed |
Closed |
|
50i MHz |
Closed |
Open |
Closed |
Open |
|
50MHz |
Open |
Closed |
Open |
Closed |
|
66i MHz |
Closed |
Closed |
Open |
Open |
|
VESA BUS SPEED CONFIGURATION | ||||||
|
Mode |
JP19 |
JP20 |
JP25 (V2) |
JP26 (V1) |
JP29 (V3) |
JP30 (V2 & V3) |
|
Synchronous |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
Asynchronous |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
Note:Pins designated should be in the closed position. When V2 & V3 are used at the same time, JP25 must be left open. | ||||||