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PUSH SU     Stack Operation     Rabbit 3000A/4000/5000 Instruction

Opcode	Instruction	Operation
ED 66	PUSH SU	(SP - 1) = SU SP = SP - 1

Clocks	8-Bit Access	16-Bit Unaligned	16-Bit Aligned
Rabbit 3000A/4000	9	n/a	n/a
Rabbit 5000	10	10	8

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.