KS57C2308/P2308/C2316/P2316SAM47 INSTRUCTION SET

RRC — Rotate Accumulator Right Through Carry

RRC

A

 

 

 

 

 

 

 

 

Operation:

Operand

Operation Summary

Bytes

Cycles

 

 

 

 

 

 

A

Rotate right through carry bit

1

1

 

 

 

 

 

Description: The four bits in the accumulator and the carry flag are together rotated one bit to the right. Bit 0 moves into the carry flag and the original carry value moves into the bit 3 accumulator position.

3

0

C

 

Operand

 

 

Binary Code

 

 

Operation Notation

 

 

 

 

 

 

 

 

 

 

A

1

0

0

0

1

0

0

0

C A.0, A3 C

 

 

 

 

 

 

 

 

 

A.n–1 A.n (n = 1, 2, 3)

 

 

 

 

 

 

 

 

 

 

Example: The accumulator contains the value 5H (0101B) and the carry flag is cleared to logic zero. The instruction

RRC A

leaves the accumulator with the value 2H (0010B) and the carry flag set to logic one.

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Image 153
Samsung KS57C2308 manual RRC Rotate Accumulator Right Through Carry, Rrc, RRC a