386-40UM Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	33/40MHz
Chip Set	UMC
Max. Onboard DRAM	32MB
SRAM Cache	64/128/256KB
BIOS	AMI
Dimensions	260mm x 220mm
I/O Options	None
NPU Options	80387DX/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Turbo switch	J4
Speaker	J2	Turbo LED	J5
Reset switch	J3	External battery	J11

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	NPU enabled	J7	Closed
	NPU disabled	J7	Open
»	Monitor type select color	J8	Closed
	Monitor type select monochrome	J8	Open
»	Battery select internal	J9	pins 2 & 3 closed
	Battery select external	J9	pins 1 & 2 closed
»	CMOS memory normal operation	J11	pins 2 & 3 closed
	CMOS memory clear	J11	pins 1 & 2 closed
Note: When selecting an external battery (J9), the external battery must be connected to J11.

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

SRAM CONFIGURATION
Size	Cache	Location	TAG
64KB	(8) 8K x 8	Banks 0 & 1	(1) 8K x 8
128KB	(4) 32K x 8	Bank 0	(1) 8K x 8
256KB	(8) 32K x 8	Banks 0 & 1	(1) 32K x 8

SRAM JUMPER CONFIGURATION
Size	W1	W2	W3	W4	W5
64KB	pins 2 & 3	Open	Open	pins 1 & 2	pins 1 & 2
128KB	pins 1 & 2	Open	Closed	pins 2 & 3	pins 1 & 2
256KB	pins 2 & 3	Closed	Closed	pins 2 & 3	pins 2 & 3
Note: Pins designated should be in the closed position