AMCC Proprietary 359
Revision 1.02 - September 10, 2007
PPC405 Processor
Preliminary User’s Manual
XO (22:30) Extended opcode for instructions with an OE field. Extended opcodes, in decimal, appear in the
instruction format diagrams presented with individual instructions. The XO field name does not
appear in instruction descriptions.
A.1.2 Instruction Format Diagrams
The instruction formats (also called forms) illustrated in Figure A-1 through Figure A-9 are valid combinations of
instruction fields. Table A-2 on page -388 indicates which form is utilized by each PPC405 opcode. Fields indicated
by slashes (/, //, or ///) are reserved. The figures are adapted from the PowerPC User Instruction Set Architecture.
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