We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
ROL: Difference between revisions
From SnesLab
(added group 2 category) |
(added RMW category) |
||
| Line 62: | Line 62: | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Group Two Instructions]] | [[Category:Group Two Instructions]] | ||
[[Category:Read-Modify-Write Instructions]] | |||
Revision as of 21:02, 2 May 2023
ROL (Rotate Left) is a 65x instruction that rotates a value and the carry flag left one bit. The most significant bit is shifted into the carry flag. The carry flag is shifted into the least significant bit.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| accumulator | 2A | 1 byte | 2 cycles | ||||
| absolute | 2E | 3 bytes | 6 cycles | ||||
| direct page | 26 | 2 bytes | 5 cycles | ||||
| absolute indexed by X | 3E | 3 bytes | 7 cycles | ||||
| direct page indexed by X | 36 | 2 bytes | 6 cycles | ||||
| Flags Clobbered | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | ||||