I never owned a C64 so I have a question. Where do you write the Turbo Assembler code, is this code which you start typing after the C64 booted? I saw a friend to write there some basic commands like LOAD to load stuff from the casette player, is it there you just start writing assembler? Or is there some special command you have to write first, or do you need to start a texteitor or what is this "monitor" he is talking about? Do you need to install it first in some way?
A c64 boots into basic. You can then enter and edit basic programs.
In order to do ml, you need another program. There are many options, but the most used in the demo scene is turbo. This is an additional program that you run. This program allows you to enter and edit you ml before you execute it.
Of course today most people use cross development and an emulator. Again there are several options, with cc65 probably one of the more popular ones. I wrote tmpx which allows you to use your favorite text editor and the turbo macro format, and then tmpx will compile it.
The screen you're talking about is just C64 BASIC. You'd do LOAD to get Turbo Assembler into memory (from cassette tape or disk), then go from there...
