ST10 FAMILY PROGRAMMING MANUAL
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A
DDB
Integer Addition
Syntax
ADDB op1,
op2
Operation
(op1)
<-- (op1) + (op2)
Data Types
BYTE
Description
Performs a 2’s complement binary addition of the source operand specified by op2 and the destination
operand specified by op1. The sum is then stored in op1.
Flags
Addressing Modes
E
Z
V
C
N
*
*
*
*
*
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 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
Format
Bytes
ADDB
Rb
n
, Rb
m
01 nm
2
ADDB
Rb
n
, [Rw
i
]
09 n:10ii
2
ADDB
Rb
n
, [Rw
i
+]
09 n:11ii
2
ADDB
Rb
n
, #data
3
09 n:0###
2
ADDB
reg, #data
16
07 RR ## ##
4
ADDB
reg, mem
03 RR MM MM
4
ADDB
mem, reg
05 RR MM MM
4
Summary of Contents for ST10 Series
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