K386SX Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	16/20MHz
Chip Set	C & T NEAT
Max. Onboard DRAM	8MB
Cache	None
BIOS	AMI/Phoenix
Dimensions	330mm x 218mm
I/O Options	Parallel port, serial ports (2), floppy drive interface, IDE interface
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 2	J2	Turbo LED	J20
Serial port 1	J3	IDE interface LED	J22
Parallel port	J4	Turbo switch	J23
External battery	J11	Speaker	J25
IDE interface	J12	Reset switch	J28
Floppy drive interface	J13	Power LED & keylock	J29

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	IRQ14 busy when IDE interface is busy	J19	pins 1 & 2 closed
	IRQ14 clear when IDE interface is busy	J19	pins 2 & 3 closed
»	Factory configured - do not alter	J24	open
»	NPU disabled	J26	closed
	NPU enabled	J26	open
»	Floppy drive interface enabled	SW1/1	Off
	Floppy drive interface disabled	SW1/1	On
»	Floppy drive interface select primary address	SW1/2	Off
	Floppy drive interface select secondary address	SW1/2	On
»	IDE interface select primary address	SW1/3	Off
	IDE interface select secondary address	SW1/3	On
»	I/O channel ready signal (IOCHRDY) disconnected	SW1/4	Off
	I/O channel ready signal (IOCHRDY) connected	SW1/4	On
»	IDE interface enabled	SW1/5	On
	IDE interface disabled	SW1/	Off
»	Factory configured - do not alter	SW1/6	On
»	CMOS memory normal operation	SW1/7	On
	CMOS memory clear	SW1/7	Off
»	Monitor type select color	SW1/8	On
	Monitor type select monochrome	SW1/8	Off

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
1.5MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	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