Sign Flag: Difference between revisions

Latest revision as of 18:45, 14 July 2024

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:

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.

@@ Line 1: / Line 1: @@
-The '''Sign Flag''' exists on the [[Super FX]].
+The '''Sign Flag''' (S) exists on the [[Super FX]].  It is bit 11 of SFR.  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
+* [[GSU/AND|AND]] R<sub>n</sub>
+* [[GSU/AND|AND]] #n
+* [[ASR]]
+* [[BIC]] R<sub>n</sub>
+* [[BIC]] #n
+* [[GSU/CMP|CMP]] R<sub>n</sub>
+* [[GSU/DEC|DEC]] R<sub>n</sub>
+* [[DIV2]]
+* [[FMULT]]
+* [[HIB]]
+* [[GSU/INC|INC]] R<sub>n</sub>
+* [[LMULT]]
+* [[LOB]]
+* [[LOOP]]
+* [[GSU/LSR|LSR]]
+* [[MERGE]]
+* [[MOVES]] R<sub>n</sub>, R<sub>n</sub>'
+* [[MULT]] R<sub>n</sub>
+* [[MULT]] #n
+* [[NOT]]
+* [[OR]] R<sub>n</sub>
+* [[OR]] #n
+* [[GSU/ROL|ROL]]
+* [[GSU/ROR|ROR]]
+* [[RPIX]]
+* [[GSU/SBC|SBC]] R<sub>n</sub>
+* [[SEX]]
+* [[SUB]] R<sub>n</sub>
+* [[SUB]] #n
+* [[SWAP]]
+* [[UMULT]] R<sub>n</sub>
+It affects the behavior of the following instructions:
+* [[BGE]]
+* [[BLT]]
+* [[GSU/BMI|BMI]]
+* [[GSU/BPL|BPL]]
 === See Also ===
 * [[CY]]
-* [[BMI]]
+* [[O/V]]
-* [[BPL]]
+* [[BMI (Super FX)]]
+* [[BPL (Super FX)]]
+* [[Negative Flag]]
 === References ===
 * 9.3 on [https://archive.org/details/SNESDevManual/book2/page/n158 page 2-9-2 of Book II] of the official Super Nintendo development manual
-* [https://archive.org/details/SNESDevManual/book2/page/n110 page 2-4-4], lbid.
+* Table 2-4-2 on [https://archive.org/details/SNESDevManual/book2/page/n110 page 2-4-4], lbid.
 [[Category:SNES Hardware]]
 [[Category:Flags]]