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Half-Carry Flag: Difference between revisions

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(→‎See Also: DAA, DAS)
(→‎See Also: carry flag)
Line 11: Line 11:
* [[DAA]]
* [[DAA]]
* [[DAS]]
* [[DAS]]
* [[Carry Flag]]


=== References ===
=== References ===


* https://problemkaputt.de/fullsnes.htm#snesapuspc700cpuoverview
* https://problemkaputt.de/fullsnes.htm#snesapuspc700cpuoverview

Revision as of 20:18, 15 July 2024

The Half-carry flag (H) exists on the SPC700, as bit 3 of the Program Status Word. It applies to the bottom 4 bits of the accumulator, meaning it is set whenever bit 3 of an ALU operation carries over into bit 4.

It is cleared by CLRV, but there is no SETV command to set it.

See Also

References