Samsung C8274X ユーザーズマニュアル

 

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. 

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. 

 

opc 

dst | src 

 

 

2 

4 

B2 

r 

r 

 

 

 

 

 

 

6 

B3 

r 

lr 

 

 

 

 

 

 

 

 

 

 

 opc 

src 

dst 

  3 

6 

B4 

R 

R 

 

 

 

 

 

 

6 

B5 

R 

IR 

 

 

 

 

 

 

 

 

 

 

 opc 

dst 

src 

  3 

6 

B6 

R 

IM 

 

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.