MAMEWorld Forums - Programming

This is my first post on this forum and I want to say Hi to everyone :-)

Before this new thread, I searched on the net a series of articles such as 68000 architecture, 68000 instruction set list, etc. but I didn't find yet a solution to my issue

My scope is to disassemble a game that runs in a 68K cpu (for example I chosen sf2ce). I read the cps1.c source code and I saw that the cpu code is present in the .23, .22, .21 binary files.
Well, I tried to reverse the code with Ida-pro debugger.
As you certainly know ida-pro is a good debugger but it doesn't have magical powers :-), so it is not able to find automatically the entry-point.
This is my first big issue:
"how can i find the entry point and than start to analyze the disassembly?"

On the net I found a forum and a site that speak about ida-reverse-68000 games, such as here hxxp://dodonpachi.daifukkat.su/ddpa/ or here hxxp://sonicresearch.org/forums/index.php?showtopic=2095 but (specially in the forum) nobody have answered well to the question (only LOL expression and joke sentences

).

Thanks a lot in advance for the help
Have a nice day
Alberto.