I'd like to trace the execution of a function twice using different input and see where the execution diverges. Is there some way of doing that in ollydbg 1.10?

OK, figured it out. Right click in the run trace window and select log to file, then hit ctrl-f11.

Long time no see

you can also use hit trace

select the code you wisht to trace rightclick add
do the trace with some input

now all the executed places will be marked red
you can select them and tell olly to ignore them on next run

it will mark only those that were not executed the last time with red markers

oh btw if you do not wish to say ignore

you can change the colour of trace marks in
options -> appearance say give it blue colour
and the different executions on the second time will be marked blue
pretty neat visual aid and nifty

Thanks!

I've been lurking; I started doing this stuff professionally again, so I'll probably be back more often over the next while.

I went to Options | Appearance | Colours and changed the Highlight Colour, but it changed the ones that were already marked. How do I get both colours?

seems i had some illusion
i think i removed the earlier marks from selection and changed colour

any way i checked now again it is not possible to have two colours simultaneously

sorry for confusion