Infineon Technologies C166S V2 User Manual page 213

ADDB
Group
Syntax
Source Operand(s)
Destination Operand(s)
Operation
(op1) ← (op1) + (op2)
Description
Performs a 2s complement binary addition of the source operand specified by op2 and
the destination operand specified by op1. The result is then stored in op1.
CPU Flags
E Set if the value of op2 represents the lowest possible negative number.
Cleared otherwise. Used to signal the end of a table.
Z Set if result equals zero. Cleared otherwise.
V Set if an arithmetic overflow occurred, i.e. the result cannot be
represented in the byte data type. Cleared otherwise.
C Set if a carry is generated from the most significant bit of the byte data
type. Cleared otherwise.
N Set if the most significant bit of the result is set. Cleared otherwise.
Encoding
Mnemonic
ADDB Rb
ADDB Rb
ADDB Rb
ADDB Rb
ADDB mem , reg
ADDB reg , #data8
ADDB reg , mem
User Manual
Integer Addition
Arithmetic Instructions
ADDB op1, op2
op1, op2 → BYTE
op1 → BYTE
E Z
* *
, #data3
n
, Rb
n m
, [Rw +]
n i
, [Rw ]
n i
Detailed Instruction Description
V C
* *
Format
09 n:0###
01 nm
09 n:11ii
09 n:10ii
05 RR MM MM
07 RR ## xx
03 RR MM MM
8-213
User Manual
C166S V2
ADDB
N
*
Bytes
2
2
2
2
4
4
4
V 1.7, 2001-01