Build Your Own Arcade Controls Forum
Arcade Collecting => Pinball => Topic started by: pinballwizard79 on January 08, 2009, 08:52:40 pm
-
Is it possible to alter the sound bytes on the rom chips in pinball machines?
-
Yeah thats a bummer, evidently those were programmed in some ancient Motorola 8890 something crap thing/code/device that only a Tandy flipped upside down can do when nearing a solar flare.
Thanks for the bad news anyway Jim :)
-
Nope
Not sure about adding custom sound but it is possible to remove certain sounds.
While looking up information on my IJ restore I stumbled upon a guy who a few years ago had the "I hate YOU" movie quote removed from his IJ by somebody. Apparently he didn't want to expose his child to such a harsh word.
Might try searching the rec.pinball newsgroup for more information on this.
-
Commenting something out of a ROM is much easier than adding new code. That whole IJ thing stirred up a lot of controversy on RGP, but there's a great deal of obnoxiousness on that pin that has nothing to do with that quote.
If you want to remove voices/sounds from the older games, all you gotta do is break off the appropriate leg on a chip. :D
Yeah I would obviously assume it would be more difficult but it is possible.
-
Do the rom-checking subroutines on those boards work by verifying checksums or sizes? Sizes can be spoofed if you're careful but a checksum is going to be damn near impossible.