Processor	80486SX/80487SX/80486DX
Processor Speed	20/25/33/50MHz
Chip Set	SIS
Max. Onboard DRAM	32MB
Cache	64/256KB
BIOS	AMI/MR
Dimensions	330mm x 218mm
I/O OPTIONS	32-bit external video card
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	C1	Keylock	C5
Turbo switch	C2	External battery	JP1
Turbo LED	C3	32-bit external video card	S1
Speaker	C4

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP2	pins 1 & 2 closed
	CMOS memory clear	JP2	pins 2 & 3 closed
	CMOS memory disabled	JP2	Open
»	Factory configured - do not alter	JP7	pins 1 & 2 closed
»	Factory configured - do not alter	JP8	pins 1 & 2 closed
»	Monitor type select color	JP10	Closed
	Monitor type select monochrome	JP10	Open
»	NPU mode select synchronous with CPU	JP11	Closed
	NPU mode select asynchronous with CPU	JP11	Open
»	Bus speed select CPU OSC	JP24	pins 1 & 2 closed
	Bus speed select OSC-IO	JP24	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
5MB	(4) 1M x 9	(4) 256K x 9
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
17MB	(4) 4M x 9	(4) 256K x 9
17MB	(4) 256K x 9	(4) 4M x 9
20MB	(4) 4M x 9	(4) 1M x 9
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0
64KB	(8) 64K x 9
256KB	(8) 256K x 9

CACHE JUMPER CONFIGURATION
Size	JP12	JP13	JP14	JP15
64KB	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
256KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JP3	JP4
80486SX	pins 1 & 2; 5 & 6 closed	pins 2 & 3 closed; 5 & 6 open
80487SX	pins 2 & 3; 4 & 5 closed	pins 2 & 3; 4 & 5 closed
80486DX	pins 2 & 3; 5 & 6 closed	pins 2 & 3; 5 & 6 closed

CPU BUS SPEED JUMPER CONFIGURATION
CPU OSC	JP25	JP26
/3	Closed	Closed
/4	Open	Open
/5	Open	Closed
/6	Closed	Open

EXTERNAL VIDEO CARD CONFIGURATION
Setting	JP5	JP6
Enabled	Closed	Closed
Disabled	Open	Open