UNIDENTIFIED
OPM 386 MOTHER BOARD
|
Processor |
80386DX |
|
Processor Speed |
25MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
IDE interface, Floppy drive interface |
|
NPU Options |
80387DX/3167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
J1 |
Speaker |
J7 |
|
Reset switch |
J2 |
IDE interface |
J9 |
|
Turbo LED |
J3 |
Floppy drive interface |
J10 |
|
Power LED & keylock |
J5 |
External battery |
JP6 |
|
IDE interface LED |
J6 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
J4 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
J4 |
pins 2 & 3 closed | |
|
|
Pipeline disabled |
J8 |
pins 1 & 2 closed |
|
Pipeline enabled |
J8 |
pins 2 & 3 closed | |
|
|
Floppy drive interface address select 370h - 377h |
JP3 |
Closed |
|
Floppy drive interface address select 3F0h - 3FFh |
JP3 |
Open | |
|
Floppy drive interface enabled |
JP4 |
Closed | |
|
Floppy drive interface disabled |
JP4 |
Open | |
|
Note: The location of J8 is unidentified. | |||
|
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 |
|
5MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
IDE INTERFACE CONFIGURATION | ||
|
Setting |
JP1 |
JP2 |
|
Enabled |
Open |
Closed |
|
Disabled |
Closed |
Open |