dsp56000 Freescale Semiconductor, Inc, dsp56000 Datasheet - Page 346

• Manufacturer Part Number: dsp56000
• Description: 24-bit Digital Signal Processor Family Manual
• Manufacturer: Freescale Semiconductor, Inc

DEC
Operation:
Description: Decrement by one the specified operand and store the result in the destina-
tion accumulator. One is subtracted from the LSB of D.
Example:
Explanation of Example: One is subtracted from the content of the A accumulator.
Condition Codes:
L — Set if overflow has occurred in result. Not affected otherwise
E — Set if the signed integer portion of result is in use
U— Set if result is unnormalized
N — Set if bit 55 of result is set
Z — Set if result equals zero
V — Set if overflow has occurred in result
C — Set if a borrow occurs from bit 55 of result
A - 80
D–1
DEC
15
LF
D
:
:
A
DM
14
13
T
Freescale Semiconductor, Inc.
**
12
;Decrement the content of A accumulator by one
For More Information On This Product,
MR
INSTRUCTION DESCRIPTIONS
S1
11
INSTRUCTION SET DETAILS
S0
10
Go to: www.freescale.com
Decrement by One
I1
9
I0
8
S
7
Assembler Syntax:
L
6
DEC
E
5
U
4
CCR
D
N
3
Z
2
V
1
C
0
MOTOROLA
DEC