Altered C64 Kernals: what is the best way to test them?

Hallo allemaal,


I created three alternative Kernals for the C64 based on V3:
- one without the cassette recorder routines
- one without the RS-232 routines
- one without both of them
Reason: to be able to add my own functions like, for example, 
integrating the software of an IEEE interface cartridge into the 
Kernal.
But I still haven't any idea if I accidently erased some routines 
needed by what ever software. The only way to find out is to run a 
lot of programs and to wait until it goes wrong. So I hope that some 
of you know a program that if that one runs fine, 99% of all 
programs (that don't use the RS-232 and/or cassette interface) for 
the C64 run fine.  

Other question: if YOU had to ommit routines, what would you prefer 
to keep: the RS-232 or the cassette interface?

Thank you for any input!


--
   
Kind regards / Met vriendelijke groet, Ruud Baltissen
www.Baltissen.org







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