CZGL AT-16
CyberResearch
®
CPU Cards
178
©Copyright 2009
CyberResearch, Inc.
C.3 Assembly Language Samples
C.3.1 Enable the DIO Input Function
The BIOS interrupt call INT 15H controls the digital I/O. An assembly program to enable
digital I/O input functions is listed below.
MOV AX,
6F08H
Sets the digital port as input
INT 15H
Initiates the INT 15H BIOS call
C.3.2 Enable the DIO Output Function
The BIOS interrupt call INT 15H controls the digital I/O. An assembly program to enable
digital I/O output functions is listed below.
MOV AX,
6F09H
Sets the digital port as output
MOV BL,
09H
INT 15H
Initiates the INT 15H BIOS call
Summary of Contents for CZGL AT-16
Page 2: ......
Page 20: ......
Page 46: ...CZGL AT 16 CyberResearch CPU Cards 26 Copyright 2009 CyberResearch Inc Chapter 3 3 Unpacking...
Page 110: ...CZGL AT 16 CyberResearch CPU Cards 90 Copyright 2009 CyberResearch Inc Chapter 6 6 BIOS Setup...
Page 214: ...CZGL AT 16 CyberResearch CPU Cards 194 Copyright 2009 CyberResearch Inc Intentionally Blank...
Page 216: ...CZGL AT 16 CyberResearch CPU Cards 196 Copyright 2009 CyberResearch Inc Intentionally Blank...
Page 217: ......