SRAM space left

jeremywilson · Joined: 11 Jul 2011 Posts: 79 Location: United States

I noticed something strange (or I don't understand) about the SRAM "space left" in the report:

I'm using ATMega2560 with 8K of internal SRAM.

from report:
Stack start : 21FF hex
Stack size : 80 hex (128)
S-Stacksize : 80 hex (128)
S-Stackstart : 2180 hex
Framesize : CE4 hex (3300)
Framestart : 141C hex
Space left : 563 dec

last variable is at 11E4 hex (4580)

Shouldn't space left be: 8192 - Stack size - S_stacksize - Framesize - last_var = 8192 - 128 - 128 -3300 - 4580 = 56 ?

Am I missing something in my equation?

Thanks !!

(BASCOM-AVR version : 2.0.8.3 , Latest : 2.0.8.3 )

laborratte · Joined: 27 Jul 2005 Posts: 299 Location: Berlin

First var is at 200 hex.

jeremywilson · Joined: 11 Jul 2011 Posts: 79 Location: United States

I figured it had to do with the 200 offset, but I see many variables with lower addresses. I guess those are all register variables.

Thanks for the response!

MWS · Joined: 22 Aug 2009 Posts: 2262