Processor	80486SX/80487SX/80486DX/80486DX2
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	None
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J9	Turbo switch	JP10
Speaker	J18	Turbo LED	JP11
Power LED & keylock	J19	Reset switch	SW1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP1	pins 2 & 3 closed
	CMOS memory clear	JP1	pins 1 & 2 closed
	Monitor type select monochrome	JP2	Open
	Monitor type select color	JP2	Closed
	Clock phase select double phase	JP4	pins 1 & 2 closed
	Clock phase select single phase	JP4	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 0	TAG 1
64KB	(4) 8K x 8	(4) 8K x 8	NONE	(1) 8K x 8
128KB	(4) 32K x 8	NONE	NONE	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 8K x 8	(1) 8K x 8

CACHE JUMPER CONFIGURATION
Size	JP3	JP5	JP6	JP7	JP8	JP9
64KB	2 & 3	Open	Open	Open	Open	Open
128KB	1 & 2	Open	Open	Closed	Closed	Closed
256KB	2 & 3	Closed	Closed	Closed	Closed	Closed
Note: Pins designated should be in the closed position

CPU TYPE CONFIGURATION
Type	JP12	JP13	JP14
80486SX	pins 2 & 3 closed	Open	Open
80487SX	pins 1 & 2 closed	pins 2 & 3 closed	Closed
80486DX	pins 1 & 2 closed	pins 1 & 2 closed	Closed
80486DX2	pins 1 & 2 closed	pins 1 & 2 closed	Closed

MISCELLANEOUS TECHNICAL NOTE

Note: The location of pin 1 is unidentified.