popperik 0 Newbie Poster

Hello everybody,

I'm pretty new to assembly, and I was experimenting with string output, when my program started freezing and crashing.

I'm using service 09 to write text, and it has no problems with "Sstract", but when I change it to "Substract", it starts to behave weird. I've also found that there are other letters that it doesn't "like".

Could anybody explain this problem? Help would be greatly appreciated.

Thanks,
popperik