SH7616 Datasheet, PDF (130/935 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series

Section 2 CPU
When there are no data transfer instructions being processed simultaneously in parallel with DSP
operation instructions, it is possible to either write NOPX, NOPY instructions or to omit the
instructions. The instruction codes are the same regardless of whether the NOPX, NOPY
instructions are written or omitted. Table 2.44 gives some examples of NOPX and NOPY
instruction codes.
Table 2.44 NOPX and NOPY Instruction Codes
Instruction
PADD X0, Y0, A0 MOVX.W @R4+, X0 MOVY.W @R6+R9, Y0
PADD X0, Y0, A0 NOPX
MOVY.W @R6+R9, Y0
PADD X0, Y0, A0 NOPX
NOPY
PADD X0, Y0, A0 NOPX
PADD X0, Y0, A0
MOVX.W @R4+, X0 MOVY.W @R6+R9, Y0
MOVX.W @R4+, X0 NOPY
MOVS.W @R4+, X0
NOPX
MOVY.W @R6+R9, Y0
MOVY.W @R6+R9, Y0
NOPX
NOPY
NOP
Code
1111100000001011
1011000100000111
1111100000000011
1011000100000111
1111100000000000
1011000100000111
1111100000000000
1011000100000111
1111100000000000
1011000100000111
1111000000001011
1111000000001000
1111010010001000
1111000000000011
1111000000000011
1111000000000000
0000000000001001
Rev. 2.00 Mar 09, 2006 page 104 of 906
REJ09B0292-0200