MODEL D3/SX (VERSION 2) Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	16MHz
Chip Set	Zymos
Max. onboard DRAM	4MB
SRAM Cache	None
BIOS	Leading Edge
Dimensions	325mm x 308mm
I/O Options	Floppy drive interface, mouse port, parallel port, serial ports (2)
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Mouse port	CN1	Parallel port	CN4
Serial port 1 (25 pin)	CN2	Floppy drive interface	CN5
Serial port 2 (9 pin)	CN3

USER CONFIGURABLE SETTINGS
Function		JUMPER	Position
»	Monitor type select color	J5	pins 1 & 2 closed
	Monitor type select monochrome	J5	pins 2 & 3 closed
»	Floppy drive interface enabled	J9	pins 2 & 3 closed
	Floppy drive interface disabled	J9	pins 1 & 2 closed
»	Mouse port enabled	J15	pins 1 & 2 closed
	Mouse port disabled	J15	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	J6	J7	J8
512KB	(2) 256K x 9	None	pins 2 & 3	pins 2 & 3	pins 2 & 3
1MB	(2) 256K x 9	(2) 256K x 9	pins 2 & 3	pins 1 & 2	pins 2 & 3
2MB	(2) 1M x 9	NONE	pins 2 & 3	pins 2 & 3	pins 1 & 2
4MB	(2) 1M x 9	(2) 1M x 9	pins 2 & 3	pins 1 & 2	pins 1 & 2
Note:Pins designated should be in the closed position.

PARALLEL PORT CONFIGURATION
IRQ	ADDRESS	J10	J11
5	378h	pins 1 & 2 closed	pins 2 & 3 closed
7	278h	pins 2 & 3 closed	pins 1 & 2 closed
5	278h	pins 1 & 2 closed	pins 1 & 2 closed
7	378h	pins 2 & 3 closed	pins 2 & 3 closed
Disabled	Disabled	Open	Open

SERIAL PORT CONFIGURATION
Port 1 (25 pine)	Port 2 (9 pin)	J12	J13
COM1	COM2	pins 2 & 3 closed	pins 2 & 3 closed
COM1	COM4	pins 2 & 3 closed	pins 1 & 2 closed
COM1	Disabled	pins 2 & 3 closed	Open
COM3	COM2	pins 1 & 2 closed	pins 2 & 3 closed
Disabled	COM2	Open	pins 2 & 3 closed
COM3	COM4	pins 1 & 2 closed	pins 1 & 2 closed
Disabled	COM4	Open	pins 1 & 2 closed
Disabled	Disabled	Open	Open

MOUSE CONFIGURATION
IRQ	J16 - J18	J19
3	Open	Open
4	Open	Open
5	Open	Open
9	Open	Closed