We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
Overflow Flag: Difference between revisions
From SnesLab
(superscripted misunderstood) |
(abbreviated V) |
||
| Line 1: | Line 1: | ||
The '''Overflow Flag''' is affected only by the following eight instructions: | The '''Overflow Flag''' (V) is affected only by the following eight instructions: | ||
* [[ADC]] | * [[ADC]] | ||
Revision as of 22:49, 28 June 2024
The Overflow Flag (V) is affected only by the following eight instructions:
It may be the most misunderstood flag of the 65c816.[2]
There is no SEV instruction to directly set the overflow flag, but the 6502 and 65c02 do have a hardware signal to set it.
See Also
References
- Eyes & Lichty, page 439: https://archive.org/details/0893037893ProgrammingThe65816/page/n465
- Clark, Bruce. http://www.6502.org/tutorials/vflag.html
- Shirriff, Ken. https://www.righto.com/2012/12/the-6502-overflow-flag-explained.html?m=1
- lbid. https://www.righto.com/2013/01/a-small-part-of-6502-chip-explained.html?m=1
- Labiak. https://archive.org/details/Programming_the_65816/page/n118