Samsung S3F80JB manual XOR Logical Exclusive or, Xor, 7FH

S3F80JBINSTRUCTION SET

XOR — Logical Exclusive OR

XOR	dst,src
Operation:	dst ← dst XOR src
	The source operand is logically exclusive-ORed with the destination operand and the result is
	stored in the destination. The exclusive-OR operation results in a "1" bit being stored whenever
	the corresponding bits in the operands are different; otherwise, a "0" bit is stored.
Flags:	C: Unaffected.
	Z:	Set if the result is "0"; cleared otherwise.
	S:	Set if the result bit 7 is set; cleared otherwise.
	V:	Always reset to "0".
	D:	Unaffected.
	H:	Unaffected.

Format:
Bytes Cycles	Opcode	Addr Mode
	(Hex)	dst	src

opc	dst src
opc	src	dst

2	4	B2	r	r
	6	B3	r	lr
3	6	B4	R	R
	6	B5	R	IR

opc

dst

src

3 6 B6 R IM

Examples: Given: R0 = 0C7H, R1 = 02H, R2 = 18H, register 00H = 2BH, register 01H = 02H, and register 02H = 23H:

XOR	R0,R1	→	R0	= 0C5H, R1 = 02H
XOR	R0,@R1	→	R0	= 0E4H, R1 = 02H, register 02H = 23H
XOR	00H,01H	→	Register 00H		= 29H, register 01H		=	02H
XOR	00H,@01H	→	Register 00H		=	08H, register 01H	=	02H, register 02H = 23H
XOR	00H,#54H	→	Register 00H		=	7FH

In the first example, if working register R0 contains the value 0C7H and if register R1 contains the value 02H, the statement "XOR R0,R1" logically exclusive-ORs the R1 value with the R0 value and stores the result (0C5H) in the destination register R0.

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