How to autostart a program from floppy disk on a Commodore c64

Question

Good news, my c64 ist still running after lots of years spending time on my attic..
But what I always wanted to know is:

How can I automatically load & run a program from a floppy disk that is already inserted
when I switch on the c64?

Some auto-running command like load "*",8,1 would be adequate...

Regards
MoC

Answer 1

You write that a command that you type in, like LOAD"*",8,1 would be adequate. Can I assume, then, that the only problem with that particular command is that it only loads, but doesn't automatically run, the program? If so, you have a number of solutions:

1. If it's a machine language program, then you should type LOAD"<FILENAME>",8,1: and then (without pressing <RETURN>) press <SHIFT>+<RUN/STOP>.

2. If it's a BASIC program, type LOAD"<FILENAME>",8: and then (without pressing <RETURN>) press <SHIFT>+<RUN/STOP>.

3. It is possible to write a BASIC program such that it automatically runs when you load it with LOAD"<FILENAME>",8,1. To do so, first add the following line to the beginning of your program:

   0 POKE770,131:POKE771,164
   

   Then issue the following commands to save the program:

   PRINT"{CLR}":POKE770,113:POKE771,168:POKE43,0;POKE44,3:POKE157,0:SAVE"<FILENAME>",8