Case #4: External Memory Or Iop Memory Space Data Move; Example: Register-To-Memory Moves - External Or Iop Memory Space Data Move - Analog Devices ADSP-21261 SHARC Hardware Reference Manual

SIMD Mode and Sequencing
DAG to DAG move:
if EQ m1 = i15;
Complimented register to DAG move:
if EQ i6 = r9;
In all the cases described above, the behavior is the same. If the condition
in PEx is true, then only the transfer occurs.
Table 3-20. Complementary-to-Uncomplimentary Move
Condition Condition
in PEx in PEy
AZx AZy
0 0
0 1
1 0
1 1
For more details on
Exchange" on page

Case #4: External Memory or IOP Memory Space Data Move

Conditional data moves from a complementary register pair to an uncom-
plemented register with an access to external memory space or IOP
memory space. This results in unexpected behavior and should not be
used.
Example: Register-to-Memory Moves – External or IOP Memory Space
Data Move
For the following instructions the DSP is operating in SIMD mode and
the explicit register is either a PEx register or PEy register.
either external memory space or IOP memory space. This example shows
3-44
Result
Explicit
px remains unchanged
px remains unchanged
r1 40-bit explicit move to px
r1 40-bit explicit move to px
register transfers, refer to
PX
5-6.
ADSP-2126x SHARC Processor Hardware Reference
Implicit
no implicit move
no implicit move
no implicit move
no implicit move
"Internal Data Bus
points to
I0