Shifts all bits in Rd one place to the right. The C Flag is shifted into bit 7 of Rd. Bit 0 is shifted into the C Flag. This operation, combined with ASR, effectively divides multi-byte signed values by two. Combined with LSR it effectively divides multi-byte unsigned values by two. The Carry Flag can be used to round the result.
Operation:
| → | |||||||||||||
| C | → | b7 - - - - - - - - - - - - - - - - - - b0 | → | C | |||||||||
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Syntax: |
Operands: |
Program Counter: |
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(i) |
ROR Rd |
0 ≤ d ≤ 31 |
PC ← PC + 1 |
16-bit Opcode:
| 1001 | 010d | dddd | 0111 |