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RET     Return     Rabbit 2000/3000/4000/5000 Instruction

Opcode	Instruction	Operation
C9	RET	PClow = (SP) PChigh = (SP + 1) SP = SP + 2

Clocks	8-Bit Access	16-Bit Unaligned	16-Bit Aligned
Rabbit 2000/3000/4000	8	n/a	n/a
Rabbit 5000	8	8	8

Flags				ALTD			IOI/IOE
S	Z	L/V	C	F	R	SP	S	D
-	-	-	-

Description

Transfers execution from a subroutine to the program that called the subroutine by popping the return address from the stack into PC.

First, the low-order byte of PC is loaded with the data at the memory address in SP then the high-order byte of PC is loaded with the data at the memory address immediately following the one held in SP. The data in SP is then incremented twice.