VL/ISA-486SV2 VERSION 1.7 Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX/ODP486SX/ 80486DX2
Processor Speed	20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set	SIS
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	246mm x 221mm
I/O Options	32-bit VESA local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	BCON1	Speaker	CON4
Turbo switch	CON1	Power LED & keylock	CON5
Turbo LED	CON2	32-bit VESA local bus slot	S1
Reset switch	CON3	32-bit VESA local bus slot	S2

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	CMOS memory normal operation (Internal Battery)	BJP1	pins 1 & 2 closed
	CMOS memory normal operation (External Battery)	BJP1	pins 2 & 3 closed
	CMOS memory clear	BJP1	Open
»	Factory configured - do not alter	JP1	pins 2 & 3 closed
»	Monitor type select EGA, Mono, VGA, or any other	JP2	pins 1 & 2 closed
	Monitor type select CGA	JP2	pins 2 & 3 closed
»	Factory configured - do not alter	TP2	Closed
»	Factory configured - do not alter	TP5	Open
»	Factory configured - do not alter	TP13	pins 1 & 2 closed
»	Factory configured - do not alter	TP14	pins 1 & 2 closed
»	Factory configured - do not alter	TP15	pins 1 & 2 closed
»	Factory configured - do not alter	TP16	pins 1 & 2 closed
»	Factory configured - do not alter	TP17	pins 2 & 3 closed
»	Factory configured - do not alter	TP25	pins 1 & 2 closed
»	Factory configured - do not alter	TP26	Open
»	Factory configured - do not alter	TP27	pins 1 & 2 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
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

CPU TYPE CONFIGURATION
Type	Package	CPJ1	CPJ2	CPJ3
80486SX	PGA	Open	pins 2 & 3 closed	pins 2 & 3 closed
80486SX	PQFP	pins 1 & 2 closed	pins 1 & 2 and 3 & 4 closed	pins 1 & 2 closed
80487SX	PGA	pins 1 & 2 closed	pins 1 & 2 and 3 & 4 closed	pins 1 & 2 closed
80486DX	PGA	pins 2 & 3 closed	pins 1 & 2 and 3 & 4 closed	pins 2 & 3 closed
ODP486SX	PGA	pins 1 & 2 closed	pins 1 & 2 and 3 & 4 closed	pins 1 & 2 closed
80486DX2	PGA	pins 2 & 3 closed	pins 1 & 2 and 3 & 4 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	JP22
AMD	pins 2 & 3 closed
Intel	pins 2 & 3 closed
Cyrix	pins 1 & 2 closed

CPU SPEED CONFIGURATION
Speed	OSC1	CS1	CS2	CS3
20MHz	20MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
25MHz	25MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
33MHz	33MHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
40MHz	40MHz	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
50iMHz	25MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
50MHz	50MHz	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed
66iMHz	33MHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed