Tag Archives: mos6526

Commando disassembled – fully commented code

In order to create Commando 2084, I had to disassemble Commando. My original intention was to patch what was only needed and stop there. But I got carried away and I ended up analyzing and commenting the entire Commando code. The commented code (that can be recompiled to generate the exact original binary) is here:Continue reading “Commando disassembled – fully commented code”

Fixing the Commodore SX-64: Replacing the MOS 6526

MOS 6526: The CIA chip You turn on your beloved SX-64 and you don’t see the blinking cursor. Don’t panic. Most probably one of the CIA chips (MOS 6526) is not working correctly. The Commodore 64 has two CIA chips. What you need to do is to replace the one that controls the keyboard, the CIAContinue reading “Fixing the Commodore SX-64: Replacing the MOS 6526”