x86 Opcode SMI

Opcode SMI

CPU: AMD Am386SXLV,Am386DXLV
AMD 486s
Type of Instruction: System

Instruction: SMI

Description:

IF (SMIE=1) THEN
{
SAVE STATUS OF EXECUTION TO SMRAM;
ENTER SMM;
SMMS <- 1;
}
ELSE
{
INT 1;
}
END

Notes: SMIE is (DR7.bit12)
=1 Enable soft SMI
=0 Disable soft SMI
SMMS is (DR6.bit12)
=1 SMM was entered
=0 SMM status cleared

Flags Affected: None

CPU mode: RM?,PM0

Physical Form: SMI
COP (Code of Operation): F1H
Clocks: Am386SXLV : 357
Am386DXLV : 325
Am486xxxx : Don't know, do you?