RET     Return     Rabbit 2000/3000/4000 Instruction

Opcode	Instruction	Clocks	Operation
C9	RET	8 (2,1,2,2,1)	PClow = (SP) PChigh = (SP + 1) SP = SP + 2

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.