eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
96
ADD HL, SP
ADD without Carry
Operation
HL ← HL+SP
Description
The CPU adds the contents of the multibyte Stack Pointer (
SP
) register to the contents of
the HL register, and stores the results in the HL register. In ADL mode, or when the
.L
suf-
fix is employed, SPL is used for
SP
. In Z80 mode, or when the
.S
suffix is employed, SPS
is used for
SP
.
Condition Bits Affected
Attributes
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 HL,SP X139
ADD.S HL,SP 1252, 39
ADD.L HL,SP 0249, 39
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