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32-Bit Opcode Maps
.S Unit Instructions and Opcode MapsF-4 SPRU733
F.3 32-Bit Opcode Maps
The C67x CPU 32-bit opcodes used in the .S unit are mapped in Figure F−1
through Figure F−11.
Figure F−1. 1 or 2 Sources Instruction Format
31 29 28 27 23 22 18 17 13 12 11 6 5 4 3 2 1 0
creg z dst src2 src1 x op 1 0 0 0 s p
3 1 5 5 5 1 6 1 1
Figure F−2. Extended .S Unit 1 or 2 Sources Instruction Format
31 29 28 27 23 22 18 17 13 12 11 10 9 6 5 4 3 2 1 0
creg z dst src2 src1 x 1 1 op 1 1 0 0 s p
3 1 5 5 5 1 4 1 1
Figure F−3. Extended .S Unit 1 or 2 Sources, Nonconditional Instruction Format
31 29 28 27 23 22 18 17 13 12 11 10 9 6 5 4 3 2 1 0
0 0 0 z dst src2 src1 x 1 1 op 1 1 0 0 s p
1 5 5 5 1 4 1 1
Figure F−4. Unary Instruction Format
31 29 28 27 23 22 18 17 13 12 11 5 4 3 2 1 0
creg z dst src2 op x 1 1 1 1 0 0 1 0 0 0 s p
3 1 5 5 5 1 1 1
Figure F−5. Extended .S Unit Branch Conditional, Immediate Instruction Format
31 29 28 27 76543210
creg z cst21 0 0 1 0 0 s p
3 1 21 1 1