BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1425AEA-V, MB-1433AEA-V, MB-1440AEA-V, MB-1450AEA-V
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
Chip Set |
Advanced |
Max. Onboard DRAM |
32MB |
Cache |
64/128/256KB |
BIOS |
AMI |
Dimensions |
254mm x 218mm |
I/O Options |
32-bit VESA local bus slots (2) |
NPU Options |
None |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
JP8 |
Turbo switch |
JP15E |
Speaker |
JP15A |
5V ground connector |
JP15F |
Power LED & keylock |
JP15B |
32-bit VESA Local bus slot |
S1 |
Turbo LED |
JP15C |
32-bit VESA Local bus slot |
S2 |
Reset switch |
JP15D |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
J01 |
N/A |
|
Factory configured - do not alter |
JP4 |
pins 2 & 3 closed |
7 Bit TAG RAM installed |
JP6 |
pins 1 & 2 closed | |
8 Bit TAG RAM installed |
JP6 |
pins 2 & 3 closed | |
Dallas Real time clock 1287 installed |
JP11 |
Closed | |
Battery & Real time clock 146818 installed |
JP11 |
Open | |
|
Monitor type select color |
JP14 |
pins 2 & 3 closed |
Monitor type select monochrome |
JP14 |
pins 1 & 2 closed | |
|
CMOS memory normal operation |
JP16 |
pins 2 & 3 closed |
CMOS memory clear |
JP16 |
pins 1 & 2 closed | |
|
CPU PQFP installed |
JP22 |
pins 1 & 2 closed |
CPU PGA installed |
JP22 |
pins 2 & 3 closed | |
|
VESA bus clock asynchronous mode |
JP26 |
pins 1 & 2 closed |
VESA bus clock synchronous mode |
JP26 |
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) 256K x 9 |
(4) 1M x 9 |
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
16MB |
(4) 4M x 9 |
NONE |
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
CACHE CONFIGURATION | ||||
Size |
Max Cachable |
Bank 0 |
Bank 1 |
TAG |
64KB |
8MB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
128KB |
16MB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
256KB |
32MB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||
Size |
JP12 |
JP19 |
64KB |
Open |
pins 1 & 2 closed |
128KB |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |
256KB |
Closed |
pins 1 & 2 closed |
CPU TYPE CONFIGURATION | ||
Type |
JP13 |
JP20 |
80486SX |
Open |
pins 1 & 2 closed |
80487SX |
pins 1 & 2 closed |
pins 2 & 3 closed |
80486DX |
pins 2 & 3 closed |
pins 2 & 3 closed |
ODP486SX |
pins 1 & 2 closed |
pins 2 & 3 closed |
80486DX2 |
pins 2 & 3 closed |
pins 2 & 3 closed |
CPU SPEED CONFIGURATION | ||||
Speed |
JP5 |
JP10 |
JP23 |
JP24 |
25MHz |
pins 2 & 3 closed |
Open |
Open |
Open |
33MHz |
pins 2 & 3 closed |
Open |
Closed |
Open |
40MHz |
pins 1 & 2 closed |
Closed |
Open |
Closed |
50i MHz |
pins 2 & 3 closed |
Open |
Open |
Open |
50MHz |
pins 1 & 2 closed |
Closed |
Open |
Open |
66i MHz |
pins 2 & 3 closed |
Open |
Closed |
Open |
VESA WAIT STATE CONFIGURATION | |
Wait states |
J02 |
0 wait states |
pins 1 & 2 closed |
1 wait state |
pins 2 & 3 closed |