Hi Tommi,
I have CCS C PCM ver 2.7, and have been unable to get RX int rtn to
work at all, I tried your code line:
#device PIC16F628
#case
#include "C:\PROJECTS\defs\16f628.h"
#include "C:\PROJECTS\defs\defs_628.h"
#fuses xt,nowdt,noprotect,put,nobrownout,nolvp
#use delay (clock=4000000)
#use rs232 (baud=9600, rcv=PB1, xmit=PB2, parity=N, bits=8,ERRORS)
//#ZERO_RAM

#INT_RDA
void serial_isr(){
        char char_received;
        char_received = RCREG; // (direct from receiver)
//        c=getc();
        putc(char_received);
                 }
void flashled();
main ()
{
   enable_interrupts(GLOBAL);
   enable_interrupts(INT_RDA);

        flashled();
        puts("\r\n Starting Test ...\r\n");
        while(1){;}
}

I dropped the flashled() to save space, see any problems with this rtn
it still does not work. I am using a max232 chip, and the rtn works fine
without the interrupt rtn. IE getc() then putc(). So far CCS has been
unresponsive.

>One of my problems was using getc() function in RX interrupt routine. My
>interrupt routine did not work until for a _long_ debugging and until I
>replaced getc() with something like.
>
>char_received = RCREG // (direct from receiver)
>
>I changed only one line.

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