PC BRAND
386DX/20 & 386DX/25
|
Processor |
80386DX |
|
Processor Speed |
20/25MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
16MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80287/80387/3167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
J1 |
External battery |
J13 |
|
Power LED & keylock |
J2 |
Reset switch |
J15 |
|
Speaker |
J3 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
J5 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
J6 |
pins 1 & 2 closed |
|
|
Factory configured - do not alter |
J12 |
N/A |
|
|
CMOS memory normal operation |
J14 |
pins 1 & 2 closed |
|
CMOS memory clear |
J14 |
pins 2 & 3 closed | |
|
|
Reset switch active at all times |
J16 |
pins 2 & 3 closed |
|
Reset switch active only when keyboard is locked |
J16 |
pins 1 & 2 closed | |
|
|
Monitor type select color |
J17 |
pins 2 & 3 closed |
|
Monitor type select monochrome |
J17 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
NONE |
NONE |
|
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
NONE |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
NONE |
NONE |
|
NPU CONFIGURATION | ||||||
|
Type |
J4 |
J7 |
J8 |
J9 |
J10 |
J11 |
|
80287 <10MHz |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
|
80287 10MHz |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
80387 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
|
3167 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | ||||||