How-to predict pending dummy read of 6502 CPU?

Hi!

As many here know the 6502 actually fetches and discards the next opcode 
when executing

single byte instruction before actually fetching the OP code again and 
it also write back actual

data before writing the real data to a specific memory address; the so 
called "dummy reads".

Is there any easy way to detect or predict a dummy read? Maybe when 
looking at some internal signals

(e.g. Visual6502) without reimplementing the full instruction decoder?


/Frank