n----------------------m | n-----------m n--m | v->|7-------->0|->|CY|-u v-----------u v--u A

RRA

None

b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 | |
---|---|---|---|---|---|---|---|---|

0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | $1F |

The contents of the Accumulator (Register A) are rotated right 1 bit position. Bit 0 is copied to the Carry flag and also to bit 7. Bit 0 is the least-significant bit.

S | is not affected. |

Z | is not affected. |

H | is reset. |

P/V | is not affected. |

N | is reset. |

C | is data from bit 0 of Accumulator. |

The Accumulator contains the following data:

7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |

Upon the execution of

RRA

the Accumulator and Carry flag contains:

7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | C | |
---|---|---|---|---|---|---|---|---|---|

1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |