VANTAGE 486WB 25/33/50 Motherboard Settings and Configuration

Processor	80486DX
Processor Speed	25/33/50MHz
Chip Set	OPTI
Max. Onboard DRAM	32MB
Cache	64/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo LED	J1	Power LED & keylock	J4
Reset switch	J2	External battery	J5
Speaker	J3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP18	pins 1 & 2 closed
	CMOS memory clear	JP18	pins 2 & 3 closed
»	Factory configured - do not alter	JP19	Open

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	TAG
64KB	(8) 8K x 8	(3) 16K x 4
256KB	(8) 32K x 8	(3) 16K x 4

CACHE JUMPER CONFIGURATION
Size	JP1	JP11	JP15
64KB	Open	pins 1 & 2 closed	pins 1 & 2 closed
256KB	Closed	pins 2 & 3 closed	pins 2 & 3 closed