Changing position of program code

[Archangel]

Why someone would want to start a code at page boundary?

May be I need to learn that.

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I gotta parrot sayzer, why is that important? Are you trying to find out what code to leave off in order to use a pic with less space?
JS.


Curiousity killed the cat
Satisfaction brought him back.

[aerostar]

I know about the compiler warnings. I have now re-arranged some code and removed a subroutine, it is now 4.7k and does not have problems.
Thanks for the comments.

[Acetronics2]

Hi, Aerostar

I've already noted some troubles as you describe ... diseappearing when subs are re-arranged !!!

Generally when subroutines are placed at the end of the program , not so far from boundary limits ... ( If - Then tests not working i.e. )

I wrote a thread about that in those columns ... but no definitive answer !!!

Can't find a satisfying explanation to that ...

Alain

[skimask]

Hi, Aerostar

I've already noted some troubles as you describe ... diseappearing when subs are re-arranged !!!

Generally when subroutines are placed at the end of the program , not so far from boundary limits ... ( If - Then tests not working i.e. )

I wrote a thread about that in those columns ... but no definitive answer !!!

Can't find a satisfying explanation to that ...

Alain

Now that's different...I've always put my sub's at the beginning of the program and jumped over them and haven't had a problem. Huh... even more unsatisfying isn't it?
JDG

[Ioannis]

On older version of PBP there was an issue with the placement of sub's. I think it was prior to 2.32. After that there was no limit as to where one can put his sub's. BUT, I found that rearranging the subs, there was a great improvment on the final code size.

I suppose this is explained considering the boundary limits and the asm commands used by the compiler.

Ioannis

[sayzer]

So in this case, where do we put the subs then?

Based on what criteria do we arrange the subs?


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[Ioannis]

Hi Sayzer. Well, now there is no official directive as to where is better placed a sub. According to old practice, on top. But this does not affect in any way the execution.

I only pointed out that if one has 5 sub's for example, and have different sizes, rearranging the order of them is affecting the final code size. I think is because a bigger sub might fall between two pages while others won't.

After a little experimenting you can find that your code might reduce up to 20% or more! Also if you change your variables to be placed on BANK0 also may help. Especially if there are arrays in the program. I had a program reduced from 7540 bytes to 6200 using the above!

Ioannis