Real C64 emulation in a browser (source: JaC64) - needs Java Plugin!
Directly after its start, the C64 could be programmed in BASIC commands. The built-in instruction set was limited, but it made it possible even for beginners to develop useful programs for this 8 bit machine.
If you are not familiar with the C64 yet, let’s try some commands:
10 POKE 53280,1
20 POKE 53280,0
30 GOTO 10
Start this program by typing the command "RUN" and press the Return-Key
How it works: with the command "POKE" you directly put a value into the entered memory address of the C64.
53280 is the address of the color of the screen border. Alternative you can try other addresses, e.g. 53281 for the screen background.
10 X=1023
20 IF X<2024 THEN X=X+1
30 POKE X,3
40 POKE X+1,54
50 POKE X+2,52
60 POKE X-1,96
70 GOTO 20
Start this program by typing the command "RUN" and press the Return-Key.
How it works: During this program the characters which are to be displayed are repeatedly written directly in changing parts of the screen memory area.
By the way: with the rows 30 / 70 you have committed a programming sin... ;-)
