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DEC
Operation:
D.L - 1
D.L
(parallel data bus move)
Description:
Decrement by one the low portion of the specified operand. The result is stored in the low portion of D.
Input Operand(s) Precision: 32-bit integer.
Output Operand Precision: 32-bit integer.
CCR Condition Codes:
C
- Set if a borrow is generated from the MSB of the result. Cleared otherwise.
V
- Set if result overflows. Cleared otherwise.
Z
- Set if result is zero. Cleared otherwise.
N
- Set if result is negative. Cleared otherwise.
I
- Not affected.
LR
- Not affected.
–
R
- Not affected.
A
- Not affected.
ER Status Bits: Not affected.
IER Flags: Not affected.
Instruction Format: DEC
31
DATA BUS MOVE FIELD
OPTIONAL EFFECTIVE ADDRESS EXTENSION OR IMMEDIATE LONG DATA
Instruction Fields:
D
Dn.L
Timing: 2 + mv oscillator clock cycles
Memory: 1 + mv program words
MOTOROLA
Decrement by One
D
(move syntax - see the MOVE instruction description.)
(u u)
d d d
n n n
where nnn = 0-7
DSP96002 USER'S MANUAL
Assembler Syntax:
DEC
D
(move syntax - see the MOVE instruction
description.)
14 13
10
0111
DEC
0
uu11
1ddd
A - 73
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