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TEST
TEST
Operation:
(LSRC) & (RSRC)
(CF)
- 0
(OF) - 0
Description:
TEST
destination,source
TEST performs the logical
"and"
of the two
operands (byte or word), updates the flags, but
does not return the result, i.e., neither operand
is
changed.
If
a TEST instruction
is
followed
by
a JNZ (jump if not zero) instruction, the
jump will be taken if there are any correspond-
ing
I-bits in both operands.
Flags Affected:
CF, OF, PF, SF, ZF.
AF undefined
2-158
TEST