I thought everyone did this at that point in time. The most interesting thing I did with debug.exe was to remove the silly write protection our schools PCs had

I thought everyone did this at that point in time. The most interesting thing I did with debug.exe was to remove the silly write protection our schools PCs had in 7-8th grade and the installed some shareware (I think!) C++ compiler that I had found one the front page of a magazine. I didn't even really program C++ back then, mostly assembly and basic. Removing the write protection was as simple as overwriting an ISR or something similar. It took very little time anyway.