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Making a rom hack on mac os x


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  • 2 weeks later...

Hack-o-Matic is just an elaborate hex editor.


The basic idea is to open a ROM binary and look for patterns that resemble the graphics in-game. You need to make sure you're in viewing it in "bit mode", so you can see the bit patterns of the graphics. Hex-editing isn't too useful for anything else other than graphics though, unless you know the location of bytes that control other things. Usually a disassembly of the ROM aids in that, but you need a decent understanding of assembly and the 2600's internal workings.


If you really want to do something substantial, find a game that already has a commented disassembly available, grab a copy of the DASM compiler, and start modifying code. That's what I did. :lol:

Edited by EarthQuake
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  • 3 weeks later...

I got Hexedit and some patches to some arcade ROMs. The patches are suppose to fix bugs that result in kill screens or reset the machine. Since I didn't know what kind of programs patch ROM for Mac OS X. So I thought I could edit the hex values since I kind of read the memory locations. Okay, sounds like a good idea but ROMs get messed up. The Robotron fix at least playable but the game will reset at some point.

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