AMCC Proprietary 221
Revision 1.02 - September 10, 2007
PPC405 Processor
iccci
Instruction Cache Congruence Class Invalidate
Preliminary User’s Manual
iccci
Instructio n Cache Congruence Class Invalidate
EA ← (RA|0) + (RB)
ICCCI(ICU cache array)
This instruction invalidates the entire ICU cache array. The EA is not used; previous implementations have used
the EA for protection checks. The instruction form is maintained for software and tool compatibility.
Registers Altered
•None
Invalid Instruction Forms
• Reserved fields
Programming Notes
Execution of this instruction is privileged.
This instruction is intended for use in the power-on reset routine to invalidate the entire cache tag array before
enabling the cache. Cachability can then be enabled.
Architecture Note
This instruction is implementation-specific and may not be portable to other implementations.
iccci RA, RB
31
RA RB 966
0 6 11 16 21 31
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