O/V: Difference between revisions

Latest revision as of 21:53, 9 July 2024

O/V is the Super FX's overflow flag. It is bit 4 of 3030h.

It is affected by the following instructions:

It affects the behavior of the following instructions:

9.3 "Operator Functions" on page 2-9-2 of Book II of the official Super Nintendo development manual
Table 2-4-2 GSU Status Register Flags on page 2-4-4 of Book II, lbid.

@@ Line 1: / Line 1: @@
-'''O/V''' is the [[Super FX]]'s overflow flag.
+'''O/V''' is the [[Super FX]]'s overflow flag.  It is bit 4 of 3030h.
+It is affected by the following instructions:
+* [[ADC (Super FX)|ADC]] R<sub>n</sub>
+* [[ADC (Super FX)|ADC]] #n
+* [[ADD]] R<sub>n</sub>
+* [[ADD]] #n
+* [[CMP (Super FX)|CMP]] R<sub>n</sub>
+* [[MERGE]]
+* [[MOVES]]
+* [[SBC (Super FX)|SBC]] R<sub>n</sub>
+* [[SUB]] R<sub>n</sub>
+* [[SUB]] #n
+It affects the behavior of the following instructions:
+* [[BVC (Super FX)|BVC]]
+* [[BVS (Super FX)|BVS]]
+* [[BGE]]
+* [[BLT]]
 === See Also ===
+* [[Sign Flag]]
 * [[Overflow Flag]]
 === Reference ===
-* [https://archive.org/details/SNESDevManual/book2/page/n158 page 2-9-2 of Book II] of the official Super Nintendo development manual
+* 9.3 "Operator Functions" on [https://archive.org/details/SNESDevManual/book2/page/n158 page 2-9-2 of Book II] of the official Super Nintendo development manual
-* page 2-4-4 of Book II, lbid.
+* Table 2-4-2 GSU Status Register Flags on [https://archive.org/details/SNESDevManual/book2/page/n110 page 2-4-4 of Book II], lbid.
 [[Category:Flags]]
 [[Category:ASM]]
 [[Category:Super FX]]