286LX-A Motherboard Settings and Configuration

Processor	80286
Processor Speed	10/12MHz
Chip Set	VLSI
Max. Onboard DRAM	4MB
Cache	None
BIOS	AMI
Dimensions	330mm x 220mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J18	Reset switch	J29
External battery	J22	Turbo LED	J103
Speaker	J23	Turbo switch	J104

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Battery select internal	J28	pins 1 & 2 closed
	Battery select external	J28	pins 2 & 3 closed
»	Timing mode select fast	J30	pins 1 & 2 closed
	Timing mode select slow	J30	pins 2 & 3 closed
»	CPU speed select 12MHz	J102	pins 1 & 2 closed
	CPU speed select 10MHz	J102	pins 2 & 3 closed
»	Monitor type select color	SW1/4	On
	Monitor type select monochrome	SW1/4	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1
512KB	(18) 41256	NONE
640KB	(18) 41256	(18) 4164
1MB	(18) 41256	(18) 41256
2MB	(18) 411000	NONE
4MB	(18) 411000	(18) 411000

DRAM SPEED CONFIGURATION
Speed	J10	J31
100ns/0 wait states	pins 1 & 2 closed	Closed
120ns/1 wait state	pins 2 & 3 closed	Open

DRAM JUMPER CONFIGURATION
Size	SW1/1	SW1/2	SW1/3
512KB	On	On	On
640KB	Off	On	On
1MB	On	Off	On
2MB	Off	Off	On
4MB	On	On	Off