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Clifford Carnmo 2017-03-19 22:07:46 +01:00 • committed by GitHub
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@ -94,7 +94,7 @@ Save the file and run build.bat in the root of the c64-devkit folder. Your emula
## Analyzing the Hello World example
~~~~
*=$0801
Tells the compiler that our code should be located and executed from the hexadecimal memory location 0801 (2039 decimal).
Tells the compiler that our code should be located and executed from the hexadecimal memory location 0801 (2049 decimal).
jsr $e5f44
Introduces a concept called KERNAL functions. Somewhere inside the ROM of the Commodore 64 there are premade utility functions for all kinds of stuff. One of these is located at location $e544 and clears the screen. We could do this manually by looping and writing a space character, but for the scope of this tutorial, a KERNAL call is enough. Jsr means jump to subroutine.