Re: Ripping sound routines?

[lyricalnanoha@dosius.ath.cx (Steve Nickolas)]

Toinet wrote:
> On 8 mar, 14:53, lyricalnan...@dosius.ath.cx (Steve Nickolas) wrote:
>> This is more an experiment than anything. �I'd like to isolate the
sound
>> code for the Munchers/Odell Lake games (they use the same sound effects),
>> though I'm not sure where to start, there's only one reference to $C030
>> in
>> main memory of Odell afaict, at $7FC8, and the routine it's in doesn't
>> seem
>> to be the one that generates the sounds I'm looking for. �I might need
to
>> look a bit deeper.
>>
>> -uso.
> 
> - Replace AD 30 C0 or 2C 30 C0 or whatever the opcode is with a BRK
> opcode and see whether it is that routine that is called.
> - Otherwise look at $0300, short sound routines like that page.
> - If the sound code plays after a Hi-Res is displayed, search for
> $C050 as well and trace the code.
> 
> It reminds me of some old cracks...
> 
> antoine
>

I used ApplePC to stuff a BRK over the $2C 30 C0 at 7FC7 (the 30 C0 I found
with KEGS), and lo and behold it crashed into the monitor.  So I guess I'd
need to trace around that.

7FC9-    M=0A A=1D X=02 Y=01 P=30 S=EB
*

Right over the graphics display.  I guess that means I'm on to something,
but I'd prolly need to figure out *what* ...

-uso.