ROM F819

Remko · Joined: 24 Sep 2003 Posts: 14

Hello,

I am getting out of ROM with the F819. When I look in the .lst file I see the compiler does not use all the ROM (and RAM):

ROM used: 1768 words (99%)
Largest free fragment is 24
RAM used: 138 (85%) at main() level
151 (93%) worst case
Stack: 4 worst case (3 in main + 1 for interrupts)

When I add the 24 to the 1768 it gives me 1792 what is exactly the amount of words of the F818, strange... When I put the line
#device *= 16 to my program and recompile the following happens:

ROM used: 1915 words (94%)
Largest free fragment is 133
RAM used: 139 (57%) at main() level
159 (65%) worst case
Stack: 4 worst case (3 in main + 1 for interrupts)

1915 plus 133 is 2048 what is exactly the amount of instructions of the F819 (that is what I want) but now my program is not working anymore.

Can anyone help me with this?

Remko

treitmey · Joined: 23 Jan 2004 Posts: 1094 Location: Appleton,WI USA

I think for this purpose, 99% is all ROM used up. I would think that the
24 blocks left are not large enough for the next object the compiler is
trying to put in ROM

Remko · Joined: 24 Sep 2003 Posts: 14

Thank you for your replay treitmey,

I just found the problem. I am debugging with ICD2. The ICD2 takes the space in ROM from 0x06FF till 0x07FF and uses some RAM.

Thanks again.

Remko