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MVN: Difference between revisions
From SnesLab
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=== External Links === | === External Links === | ||
* [[Eyes & Lichty]] page on MVN: https://archive.org/details/0893037893ProgrammingThe65816/page/n492 | * [[Eyes & Lichty]] page on MVN: https://archive.org/details/0893037893ProgrammingThe65816/page/n492 | ||
* [[Labiak]] page on MVN: https://archive.org/details/Programming_the_65816/page/n163 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:65c816 additions]] | [[Category:65c816 additions]] | ||
Revision as of 03:06, 16 May 2023
MVN (Block Move Negative) is a 65c816 instruction that copies a contiguous block of memory. It is intended to copy a block from a higher address to a lower address (moving it in the negative direction).
In Eyes & Lichty, the "N" in the mnemonic stands for "Next" not "Negative."
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| block move | 54 | 3 bytes | 7 cycles per byte moved | ||||
| Flags Clobbered | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |