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BGE (Super FX): Difference between revisions
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!colspan="8"|Basic Info | |||
|+ | |||
|'''Opcode''' | |||
|'''Length''' | |||
|'''ROM Speed''' | |||
|'''RAM Speed''' | |||
|'''Cache Speed''' | |||
|+ | |||
|07 | |||
|2 bytes | |||
|6 cycles | |||
|6 cycles | |||
|2 cycles | |||
|} | |||
{| class="wikitable" style="float:right;clear:right;width:30%" | |||
!colspan="9"|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]]. <sup>[2]</sup> | |||
=== See also === | |||
* [[BLT]] | |||
* [[BCS]] | |||
=== References === | |||
# 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 | |||
# example: [https://archive.org/details/SNESDevManual/book2/page/n177 page 2-9-21], lbid. | |||
[[Category:ASM]] | |||
[[Category:Super FX]] | |||
[[Category:GSU Control Instructions]] | |||
Latest revision as of 01:07, 11 December 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: page 2-9-21, lbid.