Re: [Sdcc-user] PIC14 hex file generated too small in size

[Vaclav P. <vac...@se...>]

> ----------------------------------------
> > Hi Vishnu,
> >
> > do you have defined some config ? Look at following line:
> > unsigned int __at( 0x2007)  __CONFIG = _CP_OFF & _WDT_OFF & _BODEN_OFF & \
> >         _PWRTE_ON & _MCLRE_OFF & _INTRC_OSC_NOCLKOUT & _CPD_OFF;
> >
> > This one is for PIC16F630 so you need to define config line by yourself. But
> it should have a look like the line above.
> >
> > Vaclav
> 
> Hey that worked! Thanks Vaclav! I knew it was something silly!
> 
> Why is this piece of crucial information no where in the documentation?
> 
> Regards,
> Vishnu Nambiar.

Hi, to configure the PIC14 oscillator, memory accesses etc. is quite obvious thing. You have to do that in assembler and you have to do that in C as well, in case you don't use the processor which already has correct config word/s programmed (i.e. bootloader application).

You would have to do that in any other language as well and for a lot of processors as well. Anyway, other processors can use different way how to define configs. For me PIC way is better because you can see everything in single file - the code, the configuration. AFAIK, AVRs have "fuses" as well but they are defined out of code on some other places.

The truth about your question is that in SDCC, there is only one example in PIC16 chapter. Maybe some note in PIC14 chapter would help beginners...

Regards,
Vaclav