eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
97
ADD IX/Y, rxy
ADD without Carry
Operation
IX/Y ← IX/Y+rxy
Description
The
rxy
operand is any of the multibyte BC, DE, or
IX/Y
registers. The CPU adds the
contents of the multibyte register
rxy
to the contents of the Index Register, IX or IY, and
stores the results in the Index Register, IX or IY.
Condition Bits Affected
Attributes
kk identifies the BC, DE, or
IX/Y
register and is assembled into one of the opcodes in
Table 42.
S Not affected.
Z Not affected.
H Set if carry from bit 11; reset otherwise.
P/V Not affected.
N Reset.
C Set if carry from MSB; reset otherwise.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
ADD IX,rxy X2DD, kk
ADD.S IX,rxy 1352, DD, kk
ADD.L IX,rxy 0349, DD, kk
ADD IY,rxy X2FD, kk
ADD.S IY,rxy 1352, FD, kk
ADD.L IY,rxy 0349, FD, kk
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