First, sorry my english is bad. My Question: On which way I can check out in Assembler that is an 80Col Card in the AppleII/II+/IIe.
I write an Program that need the 80 Col Card and must be stop is no there. And I want that this program run on all AppleII.
Have somewhere an assemblerroutine or an example that can this check out correct.
Many thanks for answer