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 |