>Did I notice correctly in your profile that you had some assembly experience in the 6502? If I remember correctly, that had the same instruction set as the 6510. I was cleaning out some storage space the other day and came across one of my old reference books on assembly with the 6510. Those were the days, eh.

I remember the Apple "Red Book" which explained its ROM routines, the "Sweet 16" interpreter, some things about the INTEGER BASIC interpreter, and so on... Once, I even programmed an interface for CP/M FORTRAN IV which allowed calling the ROM graphics routines... oh, those nibbles and JSR's!!

Remember: nostalgy is a thing of the past!