O/V

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

It is affected by the following instructions:

• ADC R_n
• ADC #n
• ADD R_n
• ADD #n
• CMP R_n
• MERGE
• MOVES
• SBC R_n
• SUB R_n
• SUB #n

It affects the behavior of the following instructions:

• BVC
• BVS
• BGE
• BLT

See Also

• Sign Flag
• Overflow Flag

Reference

• 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.