IBM PPC440X5 Bedienungsanleitung PDF herunterladen (Seite 304)

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101

dccci

Data Cache Congruence Class Invalidate

PPC440x5 CPU Core User’s Manual Preliminary

Page 304 of 589

instrset.fm.

September 12, 2002

dccci

Data Cache Congruence Class Invalidate

DCCCI

This instruction flash invalidates the entire data cache array. The RA and RB operands are not used; previous

implementations used these operands to calculate an effective address (EA) which specified the particular

block or blocks to be invalidated. The instruction form (including the specification of RA and RB operands) 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 data cache array

before caching is enabled.

Architecture Note

This instruction is implementation-specific and programs which use this instruction may not be portable to

other PowerPC Book-E implementations. See Instruction Set Portability on page 250.

dccci RA, RB

31 RA RB 454

0 6 11 16 21 31

1 2 ... 299 300 301 302 303 304 305 306 307 308 309 ... 589 590

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