286E Motherboard Settings and Configuration

Processor	80286
Processor Speed	12/16/20MHz
Chip Set	Suntac
Max. Onboard DRAM	5MB
Cache	None
BIOS	AMI
Dimensions	230mm x 220mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	JP1	Turbo LED	JP4
Speaker	JP2	Turbo switch	JP5
Reset switch	JP3	External battery	JP18

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
	NPU speed select CPU CLK/1	JP7 & JP8	pins 1 & 2 closed
	NPU speed select CPU CLK/3	JP7 & JP8	pins 2 & 3 closed
»	Monitor type select color	JP9	Closed
	Monitor type select monochrome	JP9	Open
»	Parity check enabled	JP10	Closed
	Parity check disabled	JP10	Open
»	CPU speed select 16/20MHz	JP12	pins 1 & 2 closed
	CPU speed select 12MHz	JP12	pins 2 & 3 closed
»	CMOS memory normal operation	JP17	pins 1 & 2 closed
	CMOS memory clear	JP17	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Parity (P-0)	Bank 1	Parity (P-1)	Bank 2	Bank 3
512KB	(4) 44256	(2) 41256	NONE	NONE	NONE	NONE
512KB	NONE	NONE	NONE	NONE	(2) 256K x 9	NONE
1MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	NONE	NONE
1MB	NONE	NONE	NONE	NONE	(2) 256K x 9	(2) 256K x 9
2MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 256K x 9	(2) 256K x 9
2MB	NONE	NONE	NONE	NONE	(2) 1M x 9	NONE
3MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 1M x 9	NONE
4MB	NONE	NONE	NONE	NONE	(2) 1M x 9	(2) 1M x 9
5MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256	(2) 1M x 9	(2) 1M x 9
Note:Banks 2 & 3 are considered Banks 0 & 1, respectively, when filled without using DIP. However, they will be referred to throughout the text as Banks 2 & 3 to avoid confusion.

DRAM JUMPER CONFIGURATION
Size	JP13	JP14	JP15	JP16
512KB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
512KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
1MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
1MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
2MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
2MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
3MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
4MB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
5MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

NPU SPEED CONFIGURATION
Speed	JP7	JP8
CLK/1	pins 1 & 2 closed	pins 1 & 2 closed
CLK/3	pins 2 & 3 closed	pins 2 & 3 closed