CH-386-20B Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	20MHz
Chip Set	C & T
Max. Onboard DRAM	8MB
SRAM Cache	None
BIOS	AMI/Award/Phoenix
Dimensions	218.4mm x 330.2mm
I/O Options	32-bit external memory card slot
NPU Options	80287/80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J3	Power LED & keylock	J7
Turbo LED	J4	External battery	J8
Turbo switch	J5	32-bit external memory card	S1
Speaker	J6

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP1	unknown
»	Monitor type select monochrome	JP2	open
	Monitor type select color	JP2	closed
»	NPU type select 80287/3167 or none	JP3	closed
	NPU type select 80387	JP3	open
»	CMOS memory normal operation	JP4	pins 1 & 2 closed
»	CMOS memory clear	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