6502 is a very simple CPU and you can learn all of its instructions in several hours. But as it uses 1-address instructions, the code gets pretty verbose. For e

6502 is a very simple CPU and you can learn all of its instructions in several hours. But as it uses 1-address instructions, the code gets pretty verbose. For example, to add 10 to a variable you will have to write: LDA var CLC ADC #10 STA var That's 4 lines and many keypresses for a single addition! You might want to invent slightly more high-level language that would compile into assembly, like this: var, var2 = variables(2) var += 10 var2 << 5 # Assign 5 to var2 By the way, you can use Python and operator overloading so that the lines above written in Python will generate assembly code when executed. I have used << instead of = in assignment because Python doesn't allow to overload it.