Zilog Z08470 User Manual
Page 260
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Z80 Instruction Set
UM008007-0715
248
Z80 CPU
User Manual
Condition Bits Affected
S is unknown.
Z is set if specified bit is 0; otherwise, it is reset.
H is set.
P/V is unknown.
H is reset.
C is not affected.
Example
If Index Register contains
2000h
and bit 6 in memory location
2004h
contains a 1, then
upon the execution of a BIT 6, (IY+
4h
) instruction, the Z flag and the F Register still con-
tains a 0, and bit 6 in memory location
2004h
still contains a 1. Bit 0 in memory location
2004h
is the least-significant bit.
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