M166 Datasheet, PDF (33/127 Pages) Siemens Semiconductor Group – C16x Family of Siemens 16-Bit CMOS Single-Chip Microcontrollers

30Mar98@15:00h
C166 Family Instruction Set
Instruction Description
ADDB
Integer Addition
ADDB
Syntax
Operation
Data Types
Description
ADDB op1, op2
(op1) ← (op1) + (op2)
BYTE
Performs a 2’s complement binary addition of the source operand speci-
fied by op2 and the destination operand specified by op1. The sum is then
stored in op1.
Condition Flags
E
Z
V
C
N
*
*
*
*
*
Addressing Modes
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, ie. the result cannot be repre-
sented in the specified data type. Cleared otherwise.
C Set if a carry is generated from the most significant bit of the specified
data type. Cleared otherwise.
N Set if the most significant bit of the result is set. Cleared otherwise.
Mnemonic
ADDB
ADDB
ADDB
ADDB
ADDB
Rb_n, Rb_m
Rb_n, [Rw_i]
Rb_n, [Rw_i+]
Rb_n, #data3
reg, #data16
ADDB reg, mem
ADDB mem, reg
Format
01 nm
09 n:10ii
09 n:11ii
09 n:0###
07 RR ## xx
03 RR MM MM
05 RR MM MM
Bytes
2
2
2
2
4
4
4
Semiconductor Group
33
Version 1.2, 12.97