Re: 6502 false references?

[jnoyes@usa.net (The Blue Meanie)]

In article <45ulkp$ppd@post.gsfc.nasa.gov>,
   klipsch@ssvs.gsfc.nasa.gov (Colin Klipsch) wrote:
...
>My question is: which 6502 instructions generate double references?  More
>specifically, which instructions will hit the speaker twice instead of
>once, when applied to the speaker I/O addresses?  I've looked in
>Leventhal's and Zak's 6502 books, but didn't find this information.
>(Perhaps I overlooked it...?)
...

The way I remember my 6502 programming, ANY write instruction to a given
memory location generated a dual reference (A read always preceded a write),
so it seems by changing the STX, STY, & STA you should be okay.  Is it possible
the audio problems have another source?

                            James Noyes
                            (jnoyes@usa.net)

"Thank you for abusing AT&T."