IT386SX Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	8/16/20MHz
Chip Set	Intel
Max. Onboard DRAM	2MB
Cache	None
BIOS	Phoenix
Dimensions	330mm x 218mm
I/O Options	32-bit external memory card
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo LED	P2	External battery	P8
Speaker	P3	Keyboard connector	J9
Reset switch	P4	32-bit external memory card	SL1
Power LED & keylock	P5

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Keyboard controller clock speed select 6MHz	J5	pins 1 & 2 closed
	Keyboard controller clock speed select 12MHz	J5	pins 2 & 3 closed
»	Power good signal detect from board	J8	pins 1 & 2 closed
	Power good signal detect from power supply	J8	pins 2 & 3 closed
»	Monitor type select color	J19	Closed
	Monitor type select monochrome	J19	Open

DRAM CONFIGURATION
Size	Bank 0	Parity 0	Bank 1	Parity 1
1MB	(8) 44256	(4) 41256	NONE	NONE
2MB	(8) 44256	(4) 41256	(8) 44256	(4) 41256

CPU SPEED CONFIGURATION
CPU Speed	Clock speed	J2	J10	J13	J14
8MHz	8MHz	1 & 2	Open	Open	Closed
16MHz	8MHz	1 & 2	1 & 2	Open	Open
16MHz	12MHz	2 & 3	1 & 2	Open	Open
20MHz	8MHz	1 & 2	2 & 3	Open	Open
20MHz	10MHz	Open	2 & 3	Closed	Open
20MHz	12MHz	2 & 3	2 & 3	Open	Open
Note: Pins designated should be in the closed position.

BATTERY TYPE CONFIGURATION
Type	J7
3.6v (without limiting resistor)	pins 1 & 2 closed
4.5v	pins 1 & 3 closed
6v (with limiting resistor)	pins 3 & 4 closed
6v	Open