AT-386 Motherboard Settings and Configuration

Processor	80386
Processor Speed	25MHz
Chip Set	VLSI
Video Chip Set	None
Maximum Onboard Memory	8MB
Maximum Video Memory	None
Cache	None
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80287/80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Reset switch	J13
Speaker	J2	External battery	J14
MIPS counter	J3	On board LED	J15

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	J4	Unidentified
	80287 enabled	J5	Closed
	80287 disabled	J5	Open
»	CMOS memory normal operation	J6	Pins 1 & 2 closed
	CMOS memory clear	J6	Pins 2 & 3 closed
	Monitor type select color	J11	Closed
	Monitor type select monochrome	J11	Open
	Reset valid after keyboard is locked	J12	Pins 1 & 2 closed
	Reset valid at all times	J12	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512MB	(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
4MB	(2) 1M x 9	(2) 1M x 9	None	None
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

NPU SPEED SELECTION
Speed	J7	J8
Low speed	Pins 1 & 2 closed	Pins 2 & 3 closed
10MHz	Pins 2 & 3 closed	Pins 1 & 2 closed