SAB80515 Datasheet, PDF (196/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

Instruction Set
RR
A
Function:
Rotate accumulator right
Description: The eight bits in the accumulator are rotated one bit to the right. Bit 0 is rotated into
the bit 7 position. No flags are affected.
Example:
The accumulator holds the value 0C5H (11000101B). The instruction
RR A
leaves the accumulator holding the value 0E2H (11100010B) with the carry
unaffected.
Operation:
RR
(An) ← (An + 1) n = 0-6
(A7) ← (A0)
Encoding:
Bytes:
Cycles:
0000 0011
1
1
Semiconductor Group
196