
Section 2 CPU
Rev. 4.00 Sep. 14, 2005 Page 89 of 982
REJ09B0023-0400
Table 2.30 Correspondence between DSP Instruction Operands and Registers
ALU/BPU Operations
Multiply Operations
Register
Sx Sy Dz Du Se Sf Dg
A0
Yes — Yes Yes — — Yes
A1
Yes — Yes Yes Yes Yes Yes
M0 — Yes
Yes
— — — Yes
M1 — Yes
Yes
— — — Yes
X0
Yes — Yes Yes Yes Yes —
X1
Yes — Yes — Yes — —
Y0
— Yes Yes Yes Yes Yes —
Y1 — Yes
Yes
— — Yes
—
When writing parallel instructions, the B-field instruction is written first, followed by the A-field
instruction. A sample parallel processing program is shown in figure 2.16.
DCF
PADD A0, M0, A0 PMULS X0, Y0, M0 MOVX.W @R4+, X0 MOVY.W @R6+, Y0 [;]
PINC X1, A1 MOVX.W A0, @R5+R8 MOVY.W @R7+, Y0 [;]
PCMP X1, M0 MOVX.W @R4 [NOPY] [;]
Figure 2.16 Sample Parallel Instruction Program
Square brackets mean that the contents can be omitted.
The no operation instructions NOPX and NOPY can be omitted. Table 2.31 gives an overview of
the B field in parallel operation instructions.
A semicolon is the instruction line delimiter, but this can also be omitted. If the semicolon
delimiter is used, the area to the right of the semicolon can be used as a comment field. This has
the same function as with conventional SH tools.
The DSR register condition code bit (DC) is always updated on the basis of the result of an
unconditional ALU or shift operation instruction. Conditional instructions do not update the DC
bit. Multiply instructions, also, do not update the DC bit. DC bit updating is performed by means
of bits CS0 to CS2 in the DSR register. The DC bit update rules are shown in table 2.32.
Содержание HD6417641
Страница 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Страница 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Страница 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Страница 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Страница 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Страница 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Страница 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Страница 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Страница 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
Страница 1035: ......
Страница 1036: ...SH7641 Hardware Manual...