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author | Nebuleon Fumika | 2012-12-20 18:10:38 -0500 |
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committer | Nebuleon Fumika | 2012-12-20 18:14:24 -0500 |
commit | 80858801300a2f48ad250721a79ebc7b1b0aba92 (patch) | |
tree | a64d661a5e40b759a083a653841dff2ae82fa130 /source/globals.cpp | |
parent | 83426640a6079021815e611ff0519d27ca3f9ce4 (diff) | |
download | snes9x2005-80858801300a2f48ad250721a79ebc7b1b0aba92.tar.gz snes9x2005-80858801300a2f48ad250721a79ebc7b1b0aba92.tar.bz2 snes9x2005-80858801300a2f48ad250721a79ebc7b1b0aba92.zip |
Remove the SNES Open Bus behaviour by default. Also simplify translation again.
SNES Open Bus is a quirk of the memory subsystem that allow reads of invalid addresses to return the last byte read from memory. However, it is seldom needed by a game, and it costs 1 to 3 MIPS instructions per SNES instruction to emulate.
If you need SNES Open Bus, you can remove -DNO_OPEN_BUS from the Makefile.
Diffstat (limited to 'source/globals.cpp')
-rw-r--r-- | source/globals.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/source/globals.cpp b/source/globals.cpp index 0103f7e..f00a621 100644 --- a/source/globals.cpp +++ b/source/globals.cpp @@ -157,7 +157,9 @@ uint32 Work32 = 0; signed char Int8 = 0; short Int16 = 0; long Int32 = 0; -unsigned char OpenBus = 0; +#ifndef NO_OPEN_BUS +uint8 OpenBus = 0; +#endif END_EXTERN_C |