UNIDENTIFIED
386SX MAINBOARD
|
Processor |
80386SX |
|
Processor Speed |
16/20/25/33MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
16MB |
|
Cache |
None |
|
BIOS |
Award |
|
Dimensions |
254mm x 220mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
CN1 |
Speaker |
J2 |
|
Parallel port |
CN2 |
IDE interface LED |
J3 |
|
Serial port 1 |
CN3 |
Reset switch |
J4 |
|
Serial port 2 |
CN4 |
Turbo switch |
J5 |
|
PS/2 mouse port |
CN5 |
Turbo LED |
J6 |
|
IDE interface |
CN6 |
External battery |
J8 |
|
Floppy drive interface |
CN7 |
Riser Card |
SL1 |
|
Power LED & keylock |
J1 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Battery type select internal |
J7 |
pins 1 & 2 closed |
|
Battery type select external |
J7 |
pins 2 & 3 closed | |
|
|
Monitor type select monochrome |
JP2 |
Closed |
|
Monitor type select color |
JP2 |
Open | |
|
|
CMOS memory normal operation |
JP6 |
pins 1 & 3 closed |
|
CMOS memory clear |
JP6 |
pins 2 & 4 closed | |
|
|
Video mode select interlaced |
JP7 |
Closed |
|
Video mode select non-interlaced |
JP7 |
Open | |
|
|
On board VGA enabled |
JP12 |
pins 2 & 3 closed |
|
On board VGA disabled |
JP12 |
pins 1 & 2 closed | |
|
|
Monitor type select VESA |
JP14 |
pins 1 & 2 closed |
|
Monitor type select VGA |
JP14 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 4M x 9 |
NONE |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |