UMC 386 Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	25MHz
Chip Set	UMC
Max. Onboard DRAM	12MB
Cache	None
BIOS	AMI/Award/Phoenix
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo LED	JP1	External battery	JP9
Turbo switch	JP2	Speaker	JP10
Reset switch	JP8	Power LED & keylock	JP11

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP3	Closed
»	Monitor type select color	JP4	Closed
	Monitor type select monochrome	JP4	Open
»	Factory configured - do not alter	JP5	N/A
»	NPU enabled	JP6	Closed
	NPU disabled	JP6	Open
»	NPU type select 80387	JP7	Closed
	NPU type select 3167	JP7	Open
»	Factory configured - do not alter	JP15	N/A
»	Factory configured - do not alter	JP16	N/A
»	BIOS type select 27128	JP17	pins 1 & 2 closed
	BIOS type select 27256	JP17	pins 2 & 3 closed
»	Factory configured - do not alter	JP18	N/A

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
1MB	(4) 256K x 9	NONE	NONE
2MB	(4) 256K x 9	(4) 256K x 9	NONE
3MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1 M x 9	NONE	NONE
8MB	(4) 1M x 9	(4) 1M x 9	NONE
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9

DRAM JUMPER CONFIGURATION
Size	JP12	JP13	JP14
1MB	Closed	Closed	Closed
2MB	Open	Closed	Closed
3MB	Open	Closed	Open
4MB	Closed	Open	Closed
8MB	Open	Open	Closed
12MB	Open	Open	Open