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EX JK',HL     Exchange     Rabbit 4000/5000 Instruction

Opcode	Instruction	Operation
ED 7C	EX JK',HL	if (!ALTD) then JK' <-> HL else JK' <-> HL'

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 JK' with HL. If the instruction is preceded by ALTD, the alternate register HL' is used instead of HL.

The Dynamic C assembler recognizes the following instruction, which is based on a combination of ALTD and the above exchange operation:

• EX JK',HL'      ; equivalent to ALTD EX JK',HL