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EXP     Exchange     Rabbit 4000/5000 Instruction

Opcode	Instruction	Operation
ED D9	EXP	PW <-> PW' PX <-> PX' PY <-> PY' PZ <-> PZ'

Clocks	8-Bit Access	16-Bit Unaligned	16-Bit Aligned
Rabbit 4000	4	n/a	n/a
Rabbit 5000	4	4	2

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

Description

Exchanges PW, PX, PY and PZ with their respective alternate registers, PW', PX', PY' and PZ'.