HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 183

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

• Conditional Operations and Data Transfer
• Assignment of NOPX and NOPY Instruction Codes
Some instructions belonging to this class can be executed conditionally, as described earlier.
The specified condition is valid only for the B field of the instruction, and is not valid for data
transfer instructions for which a parallel specification is made. Examples are shown in figure
3.7.
When there is no data transfer instruction to be parallel-processed simultaneously with a DSP
operation instruction, an NOPX or NOPY instruction can be written as the data transfer
instruction, or the instruction can be omitted. The instruction code is the same whether an
NOPX or NOPY instruction is written or the instruction is omitted. Examples of NOPX and
NOPY instruction codes are shown in table 3.20.
Figure 3.7 Examples of Conditional Operations and Data Transfer Instructions
DCT PADD X0,Y0,A0
When condition is True
Before execution:
After execution:
When condition is False
Before execution:
After execution:
X0=H'33333333, Y0=H'55555555, A0=H'123456789A,
R4=H'00008000, R6=H'00005000, R9=H'00000004
(R4)=H'1111, (R6)=H'2222
X0=H'11110000, Y0=H'55555555, A0=H'0088888888,
R4=H'00008002, R6=H'00005004, R9=H'00000004
(R4)=H'1111, (R6)=H'3456
X0=H'33333333, Y0=H'55555555, A0=H'123456789A,
R4=H'00008000, R6=H'00005000, R9=H'00000004
(R4)=H'1111, (R6)=H'2222
X0=H'11110000, Y0=H'55555555, A0=H'123456789A,
R4=H'00008002, R6=H'00005004, R9=H'00000004
(R4)=H'1111, (R6)=H'3456
MOVX.W @R4+,X0
MOVY.W A0,@R6+R9
Rev. 3.00 Jan. 18, 2008 Page 121 of 1458
Section 3 DSP Operating Unit
REJ09B0033-0300