ZiLOG Z8 Technical Manual

IRET
Interrupt Return
IRET
Instruction Format:
OPC
Operation:
Flags:
5-24
FLAGS <-- asp
sp <-- SP + 1
PC <-- asp
SP <-- SP + 2
IMR (7) <-- 1
Cycles
16
ope
(Hex)
SF
This instruction is issued at the end of an interrupt service routine. It restores
the Flag reqister (control register 252) and the PC. It also reenables any
interrupts that are potentially enabled.
All flags are restored to original settings (before interrupt occurred).

ZiLOG Z8 Specifications

General

Brand	ZiLOG
Model	Z8
Category	Desktop
Language	English