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BGE (Super FX): Difference between revisions
From SnesLab
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# Official Nintendo dev manual on BGE: [https://archive.org/details/SNESDevManual/book2/page/n176 Page 2-9-20 of Book II] | # Official Nintendo dev manual on BGE: [https://archive.org/details/SNESDevManual/book2/page/n176 Page 2-9-20 of Book II] | ||
# https://problemkaputt.de/fullsnes.htm#snescartgsuncpumisc | # https://problemkaputt.de/fullsnes.htm#snescartgsuncpumisc | ||
# example: https://archive.org/details/SNESDevManual/book2/page/n177 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:GSU Control Instructions]] | [[Category:GSU Control Instructions]] | ||
Revision as of 07:18, 29 November 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | Length | ROM Speed | RAM Speed | Cache Speed | |||
| 07 | 2 bytes | 6 cycles | 6 cycles | 2 cycles | |||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
BGE (Branch if Greater or Equal) is a Super FX opcode that performs a jump if the negative flag is equal to the O/V flag, effectively checking for a signed greater-equal comparison (compare BCS which is an unsigned greater-equal comparison).
According to fullsnes, the official documentation has BGE exchanged with BLT. [2]
See also
References
- Official Nintendo dev manual on BGE: Page 2-9-20 of Book II
- https://problemkaputt.de/fullsnes.htm#snescartgsuncpumisc
- example: https://archive.org/details/SNESDevManual/book2/page/n177