Opcode WBINVD
CPU: I486 +
Type of Instruction: System
Instruction: WBINVD
Description:
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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