ISA-386U3 Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	25/33/40MHz
Chip Set	UMC
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	221mm x 234mm
I/O Options	None
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo LED	CON1	Turbo switch	CON4
Power LED & Keylock	CON2	Reset switch	CON5
Speaker	CON3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	NPU select 3167 or none	JP1	pins 1 & 2 closed
	NPU select 80387	JP1	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	CJ1	CJ2	CJ3
64KB	pins 2 & 3 closed	pins 2 & 3 closed	Open
128KB	pins 1 & 2 closed	Open	Closed
256KB	pins 1 & 2 closed	pins 1 & 2 closed	Open