Thanks for the quick answer Ed!
Turns out I loaded the bin file one byte short
It now runs like a charm, thanks again.

Hi all!

So I'm working on yet another 6510 emulation and am using the incredible test programs from Klaus. Now I'm stuck on a problem and hope someone can help me.

What I've done is compile the 6502_functional_test with the settings as described in the test itself. Only difference I made was to ...