
eZ8
™
CPU Core
User Manual
UM012820-0810 ADDX Instruction
83
ADDX
Definition
Add using Extended Addressing.
Syntax
ADDX dst, src
Operation
dst
dst + src
Description
For this new eZ8 extended addressing instruction, the source operand is
added to the destination operand, and two’s-complement addition is per
-
formed. The sum is stored in the destination operand. The contents of the
source operand are not affected.
Flags
C Set if there is a carry from bit 7; reset otherwise
Z Set if the result is zero; reset otherwise
S Set if the result is negative; reset otherwise
V Set if an arithmetic overflow occurs; reset otherwise
D Reset to 0
H Set if there is a carry from bit 3 of the result; reset otherwise
Kommentare zu diesen Handbüchern