386 MAINBOARD Motherboard Settings and Configuration

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

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	JP2	Power LED & keylock	JP9
Turbo LED	JP7	Speaker	JP10
Reset switch	JP8	Turbo switch	JP11

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	NPU mode select synchronous with CPU	JP5	pins 1 & 2 closed
	NPU mode select synchronous with oscillator installed at Y1	JP5	pins 2 & 3 closed
»	CPU speed select forced slow	JP11	Closed
	CPU speed select switchable at keyboard	JP11	Open
»	External battery select 3.6VDC	JP200	Closed
	External battery select 6.0VDC	JP200	Open
»	Battery type select internal	JP201	Closed
	Battery type select external	JP201	Open
»	CMOS memory normal operation	JP202	Open
	CMOS memory clear	JP202	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
5MB	(4) 256K x 9	(4) 1 M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	U15	U16
32KB	(4) 8K x 8	NONE	NONE	(1) 8K x 8
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8	(1) 8K x 8
128KB	NONE	(4) 32K x 8	(1) 32K x 8	NONE

CACHE JUMPER CONFIGURATION
Size	JP6
32KB	pins 1 & 2 closed
64KB	pins 2 & 3 closed
128KB	pins 2 & 3 closed