TEST     Test for Zero     Rabbit 4000 Instruction

Opcode	Instruction	Clocks	Operation
ED 4C	TEST BC	4 (2,2)	BC | 0
DD 5C	TEST BCDE	4 (2,2)	BCDE | 0
4C	TEST HL	2	HL | 0
DD 4C	TEST IX	4 (2,2)	IX | 0
FD 4C	TEST IY	4 (2,2)	IY | 0
FD 5C	TEST JKHL	4 (2,2)	JKHL | 0

Flags				ALTD			IOI/IOE
S	Z	L/V	C	F	R	SP	S	D
·	·	L	0	·

Description

These instructions test registers for zero by performing a bitwise OR of the register and zero.