May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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4-40
THE
x86 MICROPROCESSORS
MOV AH, 09
INT 21H ;display message
MOV DL, CL ;move count to DL
MOV AH, 06 ;display the count
INT 21H
.EXIT
END
The output of the Example 4.27 for a string and the character ‘t’, entered through the
keyboard, is shown below.
ENTER THE CHARACTER: t
ENTER THE STRING: tyu8iolhttttfeerttt
NUMBER OF OCCURENCES: 8
C:\masm6.14\BIN>
Now that we have seen the use of the high level language constructs, it is obvious that
many of our previous programs can be re-written using these constructs.
KEY POINTS OF THIS CHAPTER
l String instructions are used to simplify coding when bulk data is moved, scanned and
compared.
l
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