going from gfx mode back to text mode

Hi Im using your code which is great,thank you. Ive been using it to switch to a 320x200x256 screen and do some graphics, but I really need to be able to switch back to the original text mode. For some reason is will switch, but isnt readable. I even copy a font back into memory, but it just wont do it. If you could help it would be appreciated.

I got it working, on some machines. Virtualbox will do it, but qemu will not. My code, if anyone wants to see how Im doing it is:

https://github.com/xlar54/emudore64