PUSH SU     Stack Operation     Rabbit 3000A/4000 Instruction

Opcode	Instruction	Clocks	Operation
ED 66	PUSH SU	9 (2,2,2,3)	(SP - 1) = SU SP = SP - 1

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

Description

Pushes SU on the stack. This is a chained-atomic instruction, meaning that an interrupt cannot take place between this instruction and the instruction following it.