dsp56000 Freescale Semiconductor, Inc, dsp56000 Datasheet - Page 465

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

Example:
Explanation of Example: Prior to execution, the 56-bit A accumulator contains the
value $01:234567:89ABCD, the 24-bit X memory location X:$1234 contains the value
$000000, and the 24-bit Y memory location Y:$1234 contains the value $000000. The
execution of the parallel move portion of the instruction, A,L:$1234, moves the 48-bit lim-
ited positive saturation constant $7FFFFF:FFFFFF into the specified long memory loca-
tion by moving the MS 24 bits of the 48-bit limited positive saturation constant ($7FFFFF)
into the 24-bit X memory location X:$1234 and by moving the LS 24 bits of the 48-bit lim-
ited positive saturation constant ($FFFFFF) into the 24-bit Y memory location Y:$1234
since the signed integer portion of the A accumulator was in use.
Condition Codes:
S — Computed according to the definition in A.5 CONDITION CODE COMPUTATION
L — Set if data limiting has occurred during parallel move.
Note: The MOVE A,L:ea operation will result in a 48-bit positive or negative saturation
constant being stored in the specified 24-bit X and Y memory locations if the signed inte-
ger portion of the A accumulator is in use. The MOVE AB,L:ea operation will result in
either one or two 24-bit positive and/or negative saturation constant(s) being stored in the
specified 24-bit X and/or Y memory location(s) if the signed integer portion of the A and/
or B accumulator(s) is in use.
MOTOROLA
L:
X:$1234
Y:$1234
CMP Y0,B
A
15
LF
:
:
DM
14
$01:234567:89ABCD
Before Execution
13
T
$:000000
$000000
Freescale Semiconductor, Inc.
**
12
A,L:$1234
For More Information On This Product,
MR
INSTRUCTION DESCRIPTIONS
S1
11
INSTRUCTION SET DETAILS
Long Memory Data Move
S0
10
Go to: www.freescale.com
I1
9
I0
8
;compare Y0 and B, save 48-bit A1:A0 value
X:$1234
Y:$1234
S
7
A
L
6
E
5
$01:234567:89ABCD
After Execution
U
4
CCR
$7FFFFF
$FFFFFF
N
3
Z
2
V
1
C
0
A - 199
L: