NEC 78K/0 Series - Manual (Page 76)

76
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
User's Manual U12326EJ4V0UM
Rotate Right
ROR
Byte Data Rotation to the Right
[Instruction format] ROR dst, cnt
[Operation] (CY, dst
7
← dst
0
, dst
m–1
← dst
m
) × one time
[Operand]
Mnemonic Operand(dst,cnt)
ROR A, 1
[Flag]
Z AC CY
×
[Description]
• The destination operand (dst) contents specified by the 1st operand are rotated to the right just once.
• The LSB (bit 0) contents are simultaneously rotated to MSB (bit 7) and transferred to the CY flag.
[Description example]
ROR A, 1; The A register contents are rotated one bit to the right.
CY 0 7