486SC-H Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX/80486DX2
Processor Speed	20/25/33/50(internal)MHz
Chip Set	Unidentified
Max. Onboard DRAM	32MB
Cache	32/128KB
BIOS	AMI
Dimensions	220mm x 220mm
I/O Options	None
NPU Options	4167

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

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CPU clock speed select 1x	J8	pins 1 & 2 closed
	CPU clock speed select 2x	J8	pins 2 & 3 closed
»	Monitor type select monochrome/EGA/VGA	J9	Open
	Monitor type select color	J9	Closed
»	Cache wait state select 1 wait state	J12	Open
	Cache wait state select 0 wait states	J12	pins 3 & 4 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
5MB	(4) 1M x 9	(4) 256K x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
17MB	(4) 256K x 9	(4) 4M x 9
17MB	(4) 4M x 9	(4) 256K x 9
20MB	(4) 1M x 9	(4) 4M x 9
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	TAG
32KB	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	(1) 8K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3	JS4
32KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
128KB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	J7
80486SX	pins 1 & 2 closed
80487SX	pins 2 & 3 closed
80486DX	pins 2 & 3 closed
80486DX2	pins 2 & 3 closed