ISA-486SV2 (VERSION 2.4) 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	230mm x 218mm
I/O Options	None
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	BCON1	Reset switch	CON3
Turbo switch	CON1	Speaker	CON4
Turbo LED	CON2	Power LED & keylock	CON5

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Battery select internal	BJP1	Closed
	Battery select external	BJP1	Open
»	Monitor type select monochrome, EGA and VGA	JP2	pins 1 & 2 closed
	Monitor type select CGA	JP2	pins 2 & 3 closed
»	Factory configured - do not alter	TP5	N/A
»	Factory configured - do not alter	TP6	N/A
»	Factory configured - do not alter	TP7	N/A
»	Factory configured - do not alter	TP8	N/A
»	Factory configured - do not alter	TP9	N/A
»	Factory configured - do not alter	TP10	N/A
»	Factory configured - do not alter	TP11	N/A
»	Factory configured - do not alter	TP13	N/A
»	Factory configured - do not alter	TP14	N/A
»	Factory configured - do not alter	TP15	N/A

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	CPJ1	CPJ2	CPJ3
80486SX	Open	pins 1 & 2 closed	pins 2 & 3 closed
80487SX	pins 1 & 2 closed	pins 1 & 2 and 3 & 4	pins 1 & 2 closed
80486DX	pins 2 & 3 closed	pins 1 & 2 and 3 & 4	pins 2 & 3 closed
ODP486SX	pins 1 & 2 closed	pins 1 & 2 and 3 & 4	pins 1 & 2 closed
80486DX2	pins 2 & 3 closed	pins 1 & 2 and 3 & 4	pins 2 & 3 closed
Note:Pins designated should be in the closed postion.

CPU SPEED CONFIGURATION
Speed	CS1	CS2	CS3	JP1
20MHz	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
25MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 2 closed
33MHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
40MHz	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
50i MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 2 closed
50MHz	pins 2 & 3 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
66i MHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed