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Block Move Addressing: Difference between revisions
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The total number of bytes copied is the value in the [[C accumulator]] plus one. If a block move is interrupted, the current byte copy is completed, then the interrupt is serviced. | The total number of bytes copied is the value in the [[C accumulator]] plus one. If a block move is interrupted, the current byte copy is completed, then the interrupt is serviced. | ||
When the copying is complete, the accumulator will contain the value $FFFF. | |||
==== Syntax ==== | ==== Syntax ==== | ||
Revision as of 02:12, 14 July 2024
Two instructions use Block Move Addressing on the 65c816:
The total number of bytes copied is the value in the C accumulator plus one. If a block move is interrupted, the current byte copy is completed, then the interrupt is serviced.
When the copying is complete, the accumulator will contain the value $FFFF.
Syntax
Asar:
MVN srds
References
- Eyes & Lichty, page 388: https://archive.org/details/0893037893ProgrammingThe65816/page/388
- "Block Moves" on page 103, lbid: https://archive.org/details/0893037893ProgrammingThe65816/page/103
- section 3.5.9 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf