Sign Flag

The Sign Flag (S) exists on the Super FX. It is bit 11 of SFR. It is affected by the following instructions:

• ADC R_n
• ADC #n
• ADD R_n
• ADD #n
• AND R_n
• AND #n
• ASR
• BIC R_n
• BIC #n
• CMP R_n
• DEC R_n
• DIV2
• FMULT
• HIB
• INC R_n
• LMULT
• LOB
• LOOP
• LSR
• MERGE
• MOVES R_n, R_n'
• MULT R_n
• MULT #n
• NOT
• OR R_n
• OR #n
• ROL
• ROR
• RPIX
• SBC R_n
• SEX
• SUB R_n
• SUB #n
• SWAP
• UMULT R_n

It affects the behavior of the following instructions:

• BGE
• BLT
• BMI
• BPL

See Also

• CY
• O/V
• BMI (Super FX)
• BPL (Super FX)
• Negative Flag

References

• 9.3 on page 2-9-2 of Book II of the official Super Nintendo development manual
• Table 2-4-2 on page 2-4-4, lbid.