How ending program ?

[FredTheFred]

Hello,

 

I'v got a question about ending program in CV code. I've made a little simply program. A little text is displayed (Text 1) on screen and another one after pressing fire (Text 2). Very simply and it's working fine on a emulator. but it's an infinite loop after displayed text 2, it's start again on text 1 and waiting to press fire and so on....

How made an ending point ? like exit command or abort ?

[PkK]

It's not clear what you mean by "ending point". What is the desired behaviour?

 

Philipp

 

Edit: Typo.

Edited August 16, 2015 by PkK

[FredTheFred]

I world like to stop the program after an event like pressing Fire button. Actually the program is looping with out ending.

[Pixelboy]

For a program to "exit", there needs to be something to exit to. For example, if you're running a program in a DOS window, when the program exits, it exits to the DOS command prompt. There is no such thing on the ColecoVision, or any other game console: The program "exits" when you turn off the hardware.

[Kiwi]

Something like,

main{

print_at(0,0,"Text here.");
pause();

print_at(1,0,"2nd text here.");

loop:

goto loop;
}

Will put the program in infinite loop, thus ending the program. Otherwise, it'll go all the way to the end of the address $FFFF, and then make it way back to $8000, restarting the program.

[PkK]

Though using goto without a need to do so is usually considered bad style. Alternatives for infinite loops:

for(;;
while(true);

[FredTheFred]

thanks all,

in fact my program doesn'y bug, it's a logical state. In the end of program, he starts again and so on...