CPU: some models of i486, i386, Pentium, Pentium Pro
Type of Instruction: System
IF (condition) THEN ; see condition below
CHANGED TO THE ICE instruction mode;
Note: 386/486: Condition is DR7.bit12=1
(CPU must be supported ICE).
Note: This instruction very usefull to debbuging as Single-Byte Interrupt
but it generate never int 3, but int 1.
Note: On Pentium Interrupt redirection initiately disabled on PMCR
(Probe Mode Control Register), which is only accessable via debug port
i.e. Need external hardware for enable normal ICEBP execution.
Note: On Pentium Pro situation is the same.
But in Pentium Pro Intel named this instruction INT01.
Flags Affected: None
CPU mode: RM,PM0
Physical Form: ICEBP
COP (Code of Operation): F1H
Clocks: : N/A
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