80386SX Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	Unidentified
Chip Set	Unidentified
Max. Onboard DRAM	8MB
Cache	None
BIOS	Unidentified
Dimensions	395mm x 393mm
I/O Options	PS/2 mouse port, parallel port, serial port, IDE interface, VGA port, floppy drive connnector
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
VGA port	S1	PS/2 mouse interface	S4
Parallel port	S2	Riser Card	S5
Serial port	S3
Note: The location on HDD and of the floppy drive connector are unidentified.

USER CONFIGURABLE SETTINGS
Function		Switch	Position
»	Factory configured - do not alter	SW1/1	N/A
»	Factory configured - do not alter	SW1/4	Off
»	Factory configured - do not alter	SW1/5	Off
»	PS/2 style monitor modes	SW1/6	On
	PC/AT style monitor modes	SW1/6	Off
»	PS/2 fixed frequency display timing	SW1/7	Off
	Older multi-frequency display timing	SW1/7	On
Note: The position of on and off are unidentified

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(2) 256K x 9	NONE	NONE	NONE
1MB	(2) 256K x 9	(2) 256K x 9	NONE	NONE
1.5MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	NONE
2MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9
2MB	(2) 1M x 9	NONE	NONE	NONE
2.5MB	(2) 256K x 9	(2) 1M x 9	NONE	NONE
3MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	NONE
4MB	(2) 1M x 9	(2) 1M x 9	NONE	NONE
4.5MB	(2) 1M x 9	(2) 1M x 9	(2) 256K x 9	NONE
5MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9
6MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9

ON-BOARD VGA CONFIGURATION
Setting	SW1/1	SW1/2	SW1/3
Enabled	On	On	Off
Disabled	Off	Off	On

TECHNICAL NOTE

Note: Switch 1 on SW1 is unidentified.