CH-386-33A/40A Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	33/40MHz
Chip Set	OPTI
Max. Onboard DRAM	32MB
Cache	32/64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J10	Turbo LED	JP4
Power LED & keylock	J23	Reset switch	SW1
Speaker	J24	Turbo switch	SW2

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP1	Closed
	Monitor type select monochrome	JP1	Open
»	CMOS memory normal operation	JP2	pins 2 & 3 closed
	CMOS memory clear	JP2	pins 1 & 2 closed
»	Bus speed select ATCLK/8	JP3	Closed
	Bus speed select ATCLK/6	JP3	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256KB x 9	NONE
2MB	(4) 256KB x 9	(4) 256KB x 9
4MB	(4) 1MBx 9	NONE
5MB	(4) 256KB x 9	(4) 1MBx 9
8MB	(4) 1MBx 9	(4) 1MBx 9
16MB	(4) 4MB x 9	NONE
20MB	(4) 4MB x 9	(4) 1MBx 9
32MB	(4) 4MB x 9	(4) 4MB x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG(U32, U33, & U42)
32KB	(4) 8K x 8	NONE	(3) 4K x 4
64KB	(4) 8K x 8	(4) 8K x 8	(3) 4K x 4
128KB	(4) 32K x 8	NONE	(3) 16K x 4
256KB	(4) 32K x 8	(4) 32K x 8	(3) 16K x 4

CACHE JUMPER CONFIGURATION
Size	JP5	JP6	JP7	JP8	JP9	JP10
32KB	1 & 2	1 & 2	1 & 2	Open	2 & 3	2 & 3
64KB	2 & 3	1 & 2	1 & 2	Open	2 & 3	1 & 2
128KB	2 & 3	1 & 2	2 & 3	Closed	2 & 3	1 & 2
256KB	2 & 3	2 & 3	2 & 3	Closed	1 & 2	1 & 2
Note:Pins designated should be in the closed position.