Hi, I was looking at the disassembly for some PIC14 code, and I assumed the SFRs would be naturally declared as volatile. This would mean code like **** (void) RCREG; (void) RCREG; **** would read the RCREG register twice, discarding its value. But those get optimized away ! (tested with 2015-12-31 snapshot)
In the non-free "pic16f628a.h" header (probably others too ?), RCREG is defined as **** extern __at(0x001A) __sfr RCREG; **** but the __sfr keyword (applied to PIC*) is undocumented in the sdcc manual. Is this a bug ? Is there a workaround ? Thanks ! ------------------------------------------------------------------------------ _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
