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ROR (SPC700): Difference between revisions

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(direct page admode)
(abs and dp, x)
Line 17: Line 17:
|4 cycles
|4 cycles
|+
|+
|
|[[Direct Page Indexed by X]]
|7B
|7B
|2 bytes
|2 bytes
|5 cycles
|5 cycles
|+
|+
|
|[[Absolute Addressing | Absolute]]
|6C
|6C
|3 bytes
|3 bytes

Revision as of 18:55, 23 July 2023

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 Clobbered
N V P B H I Z C
. . . . .

ROR is an SPC700 instruction that rotates 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.

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

See Also

External Links