Thanks. I guess I need to back up a step. I use groovymame 1.49.. Is there a way I can get sh3 games working in it? Not sure how to apply the diff exactly.
EDIT: I guess I see now... diffs have to be applied to source code and compiled. I'm trying it tonight and will post steps if I can get it to work.
EDIT2: Can't get it to work... I got the hiscore and groovymame diffs patched to 149 source but then the 149 cave diff doesn't seem to patch correctly:
C:\mame149>patch -p0 -E <cavesh3_0149u1.diff
patching file src/mame/drivers/cavesh3.c
patching file src/mame/mame.lst
Hunk #1 succeeded at 2711 (offset -28 lines).
patching file src/mame/mame.mak
Hunk #1 FAILED at 2034.
Hunk #2 succeeded at 2643 (offset -47 lines).
1 out of 2 hunks FAILED -- saving rejects to file src/mame/mame.mak.rej
patching file src/mame/video/csh3blit.inc