Out of ROM, A segment or the program is too large

Ttelmah · Joined: 11 Mar 2010 Posts: 19231

Of course _NOT_.

Use your brain. RAM is empty when you switch the chip on. Where is it's
contents going to come from?????

Constants, and the initialisation values for RAM, have to be stored in ROM.
Now, if (for example), you have an external EEPROM, then you can add code
to initialise from this. So (for example), I have code with hundreds of strings
that are loaded from external EEPROM at boot. We store different values
in this according to the language being used.

kgng97ccs · Joined: 02 Apr 2022 Posts: 97

Thank you, Ttelmah. I see your point.

For a moment, I forgot that RAM is volatile memory.

Ttelmah · Joined: 11 Mar 2010 Posts: 19231

Ooops!...

Ttelmah · Joined: 11 Mar 2010 Posts: 19231

As a comment, the .sym file is your friend.

Open this in the IDE, and it shows where every variable is stored in RAM,
and below this where the constants an routines are in the ROM. Allows
you to see which things are particularly large and possibly then look at
them and see if there are any obvious savings.
Gives great guidance as to where to look.