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S3C9234 Datasheet, PDF (93/214 Pages) Samsung semiconductor – 8-Bit CMOS Microcontroller | |||
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SAM88RI INSTRUCTION SET
S3C9234/P9234
IRET â Interrupt Return
IRET
Operation:
Flags:
Format:
IRET
FLAGS ¨ @SP
SP ¨ SP + 1
PC ¨ @SP
SP ¨ SP + 2
SYM(2) ¨ 1
This instruction is used at the end of an interrupt service routine. It restores the flag register and the
program counter. It also re-enables global interrupts.
All flags are restored to their original settings (that is, the settings before the interrupt occurred).
IRET
(Normal)
opc
Bytes
1
Cycles
6
Opcode
(Hex)
BF
6-24
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