We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

ROR (SPC700)

From SnesLab
Revision as of 19:34, 4 August 2024 by Xetheria (talk | contribs) (9 bits rotated)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Basic Info
Addressing Mode Opcode Length Speed
Accumulator 7C 1 byte 2 cycles
Direct Page 6B 2 bytes 4 cycles
Direct Page Indexed by X 7B 2 bytes 5 cycles
Absolute 6C 3 bytes 5 cycles
Flags Affected
N V P B H I Z C
N . . . . . Z C

ROR is an SPC700 instruction that rotates every bit of its operand one bit to the right. The old value of the carry flag is rotated into the most significant bit. The least significant bit is rotated into the carry flag. A total of 9 bits are rotated.

The official manual has the bit shift operators for ROR pointing the wrong way.

Syntax

ROR A
ROR dp
ROR dp+X
ROR !abs

ror.png

See Also

External Links