486 ISA HP SX/DX Motherboard Settings and Configuration

Processor	80486SX/80487SX/80486DX/80486DX2
Processor Speed	16/20/25/33/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	64MB
Cache	64/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	J6	IDE interface LED	J25
IDE interface	J7	Reset switch	J26
External battery	J18	Power LED & keylock	J27
Chassis fan power	J24	Speaker	J28

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	J5	Open
	CMOS memory clear	J5	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(4) 1MB x 9	NONE	NONE	NONE
8MB	(4) 1MB x 9	(4) 1MB x 9	NONE	NONE
12MB	(4) 1MB x 9	(4) 1MB x 9	(4) 1MB x 9	(4) 1MB x 9
20MB	(4) 1MB x 9	(4) 4MB x 9	NONE	NONE
20MB	(4) 4MB x 9	(4) 1MB x 9	NONE	NONE
24MB	(4) 1MB x 9	(4) 1MB x 9	(4) 4MB x 9	NONE
24MB	(4) 1MB x 9	(4) 4MB x 9	(4) 1MB x 9	NONE
24MB	(4) 4MB x 9	(4) 1MB x 9	(4) 1MB x 9	NONE
28MB	(4) 1MB x 9	(4) 1MB x 9	(4) 1MB x 9	(4) 4MB x 9
28MB	(4) 4MB x 9	(4) 1MB x 9	(4) 1MB x 9	(4) 1MB x 9
28MB	(4) 4MB x 9	(4) 1MB x 9	(4) 1MB x 9	(4) 1MB x 9
32MB	(4) 4MB x 9	(4) 4MB x 9	NONE	NONE
36MB	(4) 4MB x 9	(4) 1MB x 9	(4) 4MB x 9	NONE
36MB	(4) 1MB x 9	(4) 4MB x 9	(4) 4MB x 9	NONE
36MB	(4) 4MB x 9	(4) 4MB x 9	(4) 1MB x 9	NONE
40MB	(4) 1MB x 9	(4) 1MB x 9	(4) 4MB x 9	(4) 4MB x 9
40MB	(4) 1MB x 9	(4) 4MB x 9	(4) 4MB x 9	(4) 1MB x 9
40MB	(4) 4MB x 9	(4) 1MB x 9	(4) 4MB x 9	(4) 1MB x 9
40MB	(4) 4MB x 9	(4) 4MB x 9	(4) 1MB x 9	(4) 1MB x 9
48MB	(4) 4MB x 9	(4) 4MB x 9	(4) 4MB x 9	NONE
52MB	(4) 1MB x 9	(4) 4MB x 9	(4) 4MB x 9	(4) 4MB x 9
52MB	(4) 4MB x 9	(4) 1MB x 9	(4) 4MB x 9	(4) 4MB x 9
52MB	(4) 4MB x 9	(4) 4MB x 9	(4) 4MB x 9	(4) 1MB x 9
64MB	(4) 4MB x 9	(4) 4MB x 9	(4) 4MB x 9	(4) 4MB x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J19	J20	J21	J22	J23
0KB	Open	Open	Open	Closed	Closed
64KB	Open	Open	Open	Open	Open
256KB	Closed	Closed	Closed	Open	Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	J30	J31	J32	J33
80486SX	Open	Closed	Open	Open
80486DX	Closed	Open	Closed	Closed