CPU: I486 +
Type of Instruction: System

Instruction: WBINVD

IF (internal cache is WB and in WB mode) THEN
Write Back Internal Cache;
Flush internal cache;
Signal external cache to Write Back;
Signal external cache to Flush;

Notes: This instruction not work in Real Mode and in
Protected mode work only in ring 0 ;

Flags Affected: None

CPU mode: PM0,SMM

Physical Form: INVD
COP (Code of Operation): 0FH 09H
Clocks: Cyrix Cx486SLC : 4
i486 : 5
Pentium : 2000+

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