abaut memory

[ferrarilib]

Hallo i am doing my project with 877A but i dont can do more memory abaut :
ROM used: 5798 words (71%)
Largest free fragment is 2048
RAM used: 200 (54%) at main() level
316 (86%) worst case
Stack: 9 worst case (7 in main + 2 for interrupts)
if i add same new line in my code the compiler write me not enougt rom memory .... with not all memory for example 99%... but max 74% .

I dont understand why .
I must use new pic with more memory for example 452 ?

thanks ..

[Ttelmah]

Do a search on the forum for 'not enough memory'.
No, you don't need to use a larger chip. You just need to 'split up' what you are doing. The chip has a limit of how large a single 'block' of code can be, as well as on the total size. It is this second limit you are hitting.

Best Wishes

[ferrarilib]

thanks Ttelmah !
but i have tried same cange in my code but not cange nothing
first :
in main call i have do a partial code a functions example
main()
...............
while(1)
{
...............
..............
//code............
..................
...................
//ecc
}

with :

main ()
....................
while(1)
{
function1();
function2();
.....
}
but dont cange nothing in memory .

always:
RAM used: 200 (54%) at main() level
316 (86%) worst case

this 316 dont cange :(
thanks

[Ttelmah]

You need to declare the functions as _separate_.
If a function is only called a few times, the compiler will default to inlining them, which makes them part of the single 'main' block.
A search on the forum, will find detailed posts of how to split things up.

Best Wishes