386SX-20/25 Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	20/25MHz
Chip Set	Headland
Max. onboard DRAM	8MB
Cache	None
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	JP3	Turbo Switch	JP11
Power LED & keylock	JP9	Speaker	JP12
Turbo LED	JP10	Reset	JP13

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP2	Closed
	Monitor type select monochrome	JP2	Open

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
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) 1M x 9	(2) 1M x 9	(2) 256K x 9	(2) 256K x 9
6MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	NONE
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9

PIPELINE MODE CONFIGURATION
Mode	CPU Speed	JP5	JP6	JP7
Enabled	20 or 25MHz	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
Disabled	20mhz only	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 2 closed