On 2016-07-09 09:40, Maarten Brock wrote: >> On 08.07.2016 11:06, Maarten Brock wrote: >>> Hello, >>> >>> SiLabs has no dual DPTR processors. >>> >>> The EMI0CN is the equivalent of P2 on a traditional 8051 for MOVX @Ri >>> instructions. It is used by SDCC for pdata access. Mucking about with it >>> in your code can lead to 'interesting' problems, similar to writing >>> DPL/DPH in your code. Not something a 'real' programmer would do. >>> >>> Maarten >>> >> Shouldn't writing dpl/dph in a hand-written asm function be save, as >> SDCC would save/restore them if they need to be preserevd across a >> function call? >> >> Philipp > You're right, if it's a function call it's ok. But doing that in inline > asm is asking for it. > > Along the same lines, if you save/restore EMI0CN in a critical block > around your use, it should be fine as well. > > Maarten > > ------------------------------------------------------------------------------ > Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San > Francisco, CA to explore cutting-edge tech and listen to tech luminaries > present their vision of the future. This family event has something for > everyone, including kids. Get more information and register today. > http://sdm.link/attshape > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user > Maarten! Real programmers probably knows where and how to use EMI0CN.
And your are so right....not in in-line code of course! Would not dream about that. You probably qualify as a "real programmer" :-) Joakim ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
