dsp56000 Freescale Semiconductor, Inc, dsp56000 Datasheet - Page 516
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dsp56000
Manufacturer Part Number
dsp56000
Description
24-bit Digital Signal Processor Family Manual
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.DSP56000.pdf
(637 pages)
- Current page: 516 of 637
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Freescale Semiconductor, Inc.
INSTRUCTION DESCRIPTIONS
REP
REP
Repeat Next Instruction
Explanation of Example: Prior to execution, the 24-bit X0 register contains the value
$000100, and the 16-bit loop counter (LC) register contains the value $0000. The execu-
tion of the REP X0 instruction takes the 24-bit value in the X0 register, truncates the MS
8 bits, and stores the 16 LS bits in the 16-bit loop counter (LC) register. Thus, the single-
word MAC instruction immediately following the REP instruction is repeated $100 times.
Condition Codes:
5
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
LF
DM
T
**
S1
S0
I1
I0
S
L
E
U
N
Z
V
C
MR
CCR
For source operand A or B:
S — Computed according to the definition. See Notes on page A-255.
L — Set if data limiting occurred. See Notes on page A-255.
For other source operands:
The condition code bits are not affected.
A - 250
INSTRUCTION SET DETAILS
MOTOROLA
For More Information On This Product,
Go to: www.freescale.com
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