HD6432633 Datasheet, PDF (172/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

4.5 Trap Instruction
Trap instruction exception handling starts when a TRAPA instruction is executed. Trap instruction
exception handling can be executed at all times in the program execution state.
The TRAPA instruction fetches a start address from a vector table entry corresponding to a vector
number from 0 to 3, as specified in the instruction code.
Table 4-5 shows the status of CCR and EXR after execution of trap instruction exception
handling.
Table 4-5 Status of CCR and EXR after Trap Instruction Exception Handling
Interrupt Control Mode
I
0
1
2
1
Legend
1: Set to 1
0: Cleared to 0
—: Retains value prior to execution
CCR
UI
—
—
I2 to I0
—
—
EXR
T
—
0
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