386SX-16/20 Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	16/20MHz
Chip Set	Suntac
Max. Onboard DRAM	8MB
Cache	None
BIOS	AMI
Dimensions	355mm x 304mm
I/O Options	VGA port, VGA feature connector, parallel port, serial ports (2)
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
IDE interface LED	J1	Serial port 2	J12
Front panel display	J3	Serial port 1	J13
VGA feature connector	J6	VGA port	J14
Speaker enable/disable switch	J9	Riser card	R1
Parallel port	J11

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Onboard VGA enabled	JP5	Closed
	Onboard VGA disabled	JP5	Open

SERIAL PORT 1 CONFIGURATION
COM1		JP1
»	DTE	pins 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, and 6 & 7 closed
	DCE	pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, and 11 & 12 closed

SERIAL PORT 2 CONFIGURATION
COM2		JP2
»	DTE	pins 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, and 6 & 7 closed
	DCE	pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, and 11 & 12 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(2) 256K x 9	NONE	NONE	NONE
1MB	(2) 256K x 9	(2) 256K x 9	NONE	NONE
2MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9
3MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	NONE
4MB	(2) 1M x 9	(2) 1M x 9	NONE	NONE
5MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9
6MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	NONE
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9