UNIDENTIFIED
MB1433FA
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
32MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J1 |
Reset switch |
J4 |
|
Speaker |
J2 |
Turbo switch |
J5 |
|
Turbo LED |
J3 |
External battery |
JP17 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Keyboard BIOS pin size select 23 |
JP3 |
pins 1 & 3 closed |
|
Keyboard BIOS pin size select 30 |
JP3 |
pins 2 & 4 closed | |
|
|
Monitor type select monochrome |
JP4 |
Open |
|
Monitor type select color |
JP4 |
Closed | |
|
|
Chip type select 146818 |
JP7 |
Open |
|
Chip type select Dallas |
JP7 |
Closed | |
|
|
CMOS memory normal operation |
JP11 |
pins 2 & 4 closed |
|
CMOS memory clear |
JP11 |
pins 1 & 3 closed | |
|
|
Fuse enabled |
JPE |
Open |
|
Fuse disabled |
JPE |
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 |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
jp2 |
jp13 |
jp16 |
jp18 |
jp20 |
|
32KB |
1 & 8, 2 & 7, 3 & 6, 4 & 5 |
1 & 4 |
1 & 4 |
Open |
Open |
|
64KB |
1 & 8, 2 & 7, 4 & 5 |
2 & 3 |
1 & 4 |
1 & 4 |
Open |
|
128KB |
1 & 8, 2 & 7, 3 & 6 |
1 & 4 |
1 & 4 |
1 & 4, 2 & 3 |
1 & 8, 2 & 7 |
|
256KB |
1 & 8, 2 & 7 |
2 & 3 |
1 & 4, 2 & 3 |
1 & 4, 2 & 3 |
3 & 6, 4 & 5 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | |
|
Type |
JP10 |
|
80486SX |
pins 3 & 10 closed |
|
80487SX |
pins 1 & 12, 2 & 11, 5 & 8 closed |
|
80486DX |
pins 1 & 12, 2 & 11, 3 & 10 closed |
|
80486DX2 |
pins 1 & 12, 2 & 11, 3 & 10 closed |