Processor	80486DX/80486DX2
Processor Speed	25/33/50(internal)/50/66(internal)MHz
Chip Set	None
Max. Onboard DRAM	64MB
Cache	64/128/256KB (on external CPU card)
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit external CPU card slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	J2	Reset switch	J7
Turbo LED	J5	Power LED & keylock	J8
Turbo switch	J6	32-bit external CPU card	S1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter (on external CPU card)	CE1	N/A
»	Factory configured - do not alter (on external CPU card)	CE2	N/A
»	I/O recovery time disabled (normal)	E1	pins 1 & 2 closed
	I/O recovery time enabled (slower)	E1	pins 2 & 3 closed
»	Factory configured - do not alter	E2	pins 2 & 3 closed
»	Factory configured - do not alter	E3	pins 1 & 2 closed
»	System base memory size select 640KB	J1	pins 1 & 2 closed
	System base memory size select 512KB	J1	pins 2 & 3 closed
»	Monitor type select color	JP2	Closed
	Monitor type select monochrome	JP2	Open
»	Factory configured - do not alter	JP3	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(4) 1M x 9	NONE	NONE	NONE
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE
12MB	(4) 1M x 9	(4) 1M x 9	(1) 1M x 36	NONE
16MB	(4) 1M x 9	(4) 1M x 9	(1) 1M x 36	(1) 1M x 36
16MB	(4) 4M x 9	NONE	NONE	NONE
20MB	(4) 4M x 9	(4) 1M x 9	NONE	NONE
24MB	(4) 4M x 9	(4) 1M x 9	(1) 1M x 36	NONE
32MB	(4) 4M x 9	(4) 4M x 9	NONE	NONE
40MB	(4) 4M x 9	(4) 4M x 9	(1) 1M x 36	(1) 1M x 36
48MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9	NONE
64MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 36	(4) 4M x 36

DRAM JUMPER CONFIGURATION
Size	J3	J4
4MB	pins 2 & 3 closed	pins 2 & 3 closed
8MB	pins 2 & 3 closed	pins 2 & 3 closed
12MB	pins 2 & 3 closed	pins 2 & 3 closed
16MB	pins 2 & 3 closed	pins 2 & 3 closed
16MB	pins 1 & 2 closed	pins 1 & 2 closed
20MB	pins 1 & 2 closed	pins 1 & 2 closed
24MB	pins 2 & 3 closed	pins 1 & 2 closed
32MB	pins 1 & 2 closed	pins 1 & 2 closed
40MB	pins 2 & 3 closed	pins 1 & 2 closed
48MB	pins 1 & 2 closed	pins 1 & 2 closed
64MB	pins 1 & 2 closed	pins 1 & 2 closed

CACHE CONFIGURATION
Size	Bank 0	Bank 1
64KB	(5) 8K x 8	(5) 8K x 8
128KB	(5) 32K x 8	NONE
256KB	(5) 32K x 8	(5) 32K x 8

CACHE JUMPER CONFIGURATION
Size	SR1	SR2	SR3	SR4	SR5
64KB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
128KB	2 & 3	1 & 2	1 & 2	2 & 3	1 & 2
256KB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON’T)
Size	SR6	SR7	SR8	SR9	SR10
64KB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
128KB	1 & 2	1 & 2	2 & 3	1 & 2	2 & 3
256KB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.