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The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
book

The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition

by Lyla B. Das
May 2024
Intermediate to advanced content levelIntermediate to advanced
665 pages
23h 2m
English
Pearson India
Content preview from The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
56 THE x86 MICROPROCESSORS
is used as a count), it will fi nally become zero. At this instant, the zero fl ag gets set i.e., ZF = 1.
Another case is when two numbers are compared. Comparison is achieved by subtraction. If the
numbers compared are equal, the zero fl ag is set (ZF = 1) indicating equality of the operands.
Parity Flag (PF) e setting of this fl ag indicates the presence of an even number of bits in the
least signifi cant byte (lower 8 bits) of the destination. For example, after a particular arithmetic
or logic operation, if the destination contains the number 11100111, the parity fl ag is set to
indicate even parity. Even if the operation ...
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Publisher Resources

ISBN: 9781282663169