OPTI 386 DX Motherboard Settings and Configuration

Processor	80386DX/CX486DLC
Processor Speed	33/40MHz
Chip Set	Opti
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387DX/CX487DLC

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Turbo LED	JP12
Power LED & keylock	J18	Reset switch	SW1
Speaker	J19

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP3	pins 2 & 3 closed
	CMOS memory clear	JP3	pins 1 & 2 closed
»	Factory configured-do not alter	JP4	N/A
»	Factory configured-do not alter	JP7	N/A
»	Factory configured do not alter	JP11	N/A

CPU TYPE SELECT
Type	JP5	JP13
CX486DLC	Closed	Closed
80386DX	Open	Open

CLOCK SPEED SELECT
Speed	JP1	JP2
33MHz	Closed	Closed
40MHz	Open	Open

CACHE JUMPER CONFIGURATION
Size	JP6	JP8	JP9	JP10	JP17	JP18
64KB	Open	Open	Open	Pins 2 & 3	Open	Open
128KB	Closed	Closed	Open	Pins 1 & 2	Open	Closed
256KB	Closed	Closed	Closed	Pins 2 & 3	Closed	Closed
Note:All pins designated should be in the closed position.

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