486 CACHE Motherboard Settings and Configuration

Processor	80486SX/80486DX
Processor Speed	20/25/33MHz
Chip Set	SIS
Max. Onboard DRAM	32MB
Cache	None
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80487SX

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo LED	J1	Speaker	J4
Turbo switch	J2	Power LED & keylock	J5
Reset switch	J3	External battery	J12

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CPU speed select 20 or 25MHz	J6	Open
	CPU speed select 33MHz	J6	Closed
»	Ignore error and continue executing	J7	pins 1 & 2 closed
	Halt system if error occurs	J7	Open
	Error condition controlled by CPU	J7	pins 2 & 3 closed
»	Monitor type select color	J9	Closed
	Monitor type select monochrome	J9	Open
»	Factory configured - do not alter	J10	N/A
»	CMOS memory normal operation	J11	pins 1 & 2 closed
	CMOS memory clear	J11	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
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
32MB	(4) 4M x 9	(4) 4M x 9

CPU TYPE CONFIGURATION
Type	J8
80486SX	pins 4 & 6 closed
80486DX	pins 1 & 2, 3 & 4, 5 & 6 closed