Apple II

I have a very old PL/I code that I would like to compile. does anyone have compilers?

I need to run one assembler code on an apple 2. but I do not know how to do it! Can someone teach me?

After getting some blank discs and using ADT to burn some software, I'm finding out that my IIc has a few quirks at times. The biggest culprit being that there is an exclamation mark in the middle of the screen any time I am in 80 column mode. I cant find any information about this issue from anyone else online, but I do see that a lot of times users will have 2-3 exclamation marks on various parts of their screen usually due to a RAM issue. Though not as bad as some people's cases, it was worth doing some diagnosing to check if any internals were going bad.

Hello, newbie to the forums. Former Apple II user from back in the 1980s. I recently acquired a couple of Apple II pluses. One works fine... on the other, the keyboard (non-encoder card type) does not work at all. The Power Light comes on but no keys work when pressed. I removed the Cable and MM5740 Chip and Cleaned the contacts and sockets but that didn't do squat...Another thing worth noting is that the previous owner installed a Keytronics KB-200 keyboard along with an interface board. On the keytronics keyboard, less than 1/2 the keys would work when pressed.