topic Re: Map file analysing... in 8-bit Microcontrollers

Map file analysing...

Iko — Wed, 24 Aug 2011 15:24:30 GMT

Hi all. i'm working on HCS08DZ60.

I want to analyse the map file to know ram usage (without stack)...

Could you confirm me that, to know RAM usage without stack, i just need to add:

- Data segment

- Bss segmant

- Common segment

In this case, in my map file (joined) could you confim me that i'm using 1463 bytes of RAM?

Tanks in advance.

Re: Map file analysing...

kef — Wed, 24 Aug 2011 21:26:13 GMT

Close. You forgot to add stack size. Also, if you used zero page RAM, you should could it too. Look at this line:

READ_WRITE (R/W): 6B8 (dec: 1720)

Of course READ_WRITE figure may not always work as RAM usage indicator, since you may create your own NO_INIT N/I segments and place there variables that don't need to be zeroad at startup, making srtartup taking less time.

Re: Map file analysing...

bigmac — Wed, 24 Aug 2011 22:34:35 GMT

Hello Iko,

It may also be useful to view the section "Object list sorted by address", where it can be seen the the non-stack RAM usage commences at address 0x200, through to address 0x7B6, a span of 0x5B7 (1463) bytes.

Regards,

Mac