MOVing between two memory addresses

Question

I\'m trying to learn assembly (so bear with me) and I\'m getting a compile error on this line:

mov byte [t_last], [t_cur]

The error is

Answer 1

Your suspicion is correct, you can't move from memory to memory.

Any general-purpose register will do. Remember to PUSH the register if you are not sure what's inside it and to restore it back once done.