486 CACHE PLUS Motherboard Settings and Configuration

Processor	80486SX/80486DX
Processor Speed	20/25/33MHz
Chip Set	SIS
Max. Onboard DRAM	32MB
Cache	32/64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80487SX

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

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	J11	Closed
	Monitor type select monochrome	J11	Open
»	CMOS memory normal operation	J13	pins 1 & 2 closed
	CMOS memory clear	J13	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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
32KB	(4) 8K x 8	NONE	(1) 8K x 8
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	NONE	(1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J6	J7	J8	J9	J10
32KB	Open	Open	Closed	Closed	2 & 3
64KB	2 & 3	Open	Closed	Open	2 & 3
128KB	2 & 3	2 & 3	Open	Open	2 & 3
256KB	2 & 3	2 & 3	Open	Open	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Size	J14
80486SX	pins 4 & 6 closed
80486DX	pins 1 & 2, 3 & 4, 5 & 6 closed