On 01/04/13 02:32, php5...@netcourrier.com wrote: > David > > I am a beginer with assembler. After writing programme in C to > msp430, i want to start writing in assembler. > > Why assembler ? To learn, to test.
Fair enough. While it is almost always "better" to program in C (more portable, faster to develop, more reliable, and often smaller and faster code in the end), it is great to be able to program in assembly - it is the best way to really get to know the processor you are using, and you can write better C code when you understand how the generated assembly will work. A key tool here is to get the compiler to generate assembly listing files from your C code (using flags such as "-Wa,-adchls" when compiling) so that you can see the assembly generated by the compiler. > > In assembler, you have "bis", "bic" you don't have in C. Yes, you can do that in C - statements such as "PORTD |= 0x04" or "PORTD &= ~0x0800" will generate "bis" and "bic" instructions. (A weird thing about msp430 programming is that you can have more than one name for the same instruction - a "bis" is just an "or", for example.) There are not actually many cases where you can write noticeably smaller or faster real-world code in assembly than in C - the compiler is quite good at getting the best out of the chip. mvh., David > > Thanks to everybody who answer me. > > > --- your message ------ On 30/03/13 21:37, php5...@netcourrier.com > wrote: >> Hi everybody. >> >> I have an lanchpad and i use mspgcc to program it in C. Today, i >> want to program in assembler. Not inlinig but writing programs in >> assembler using the C-processor include files. >> >> First, i read mspgcc's web site . >> >> http://mspgcc.sourceforge.net/manual/x1522.html don't work on my >> computer. >> >> Second, i ask google. But i don't find this information. >> >> So , can i program msp430 in assembler with mspgcc ? How to ? >> >> Do you have a pointer to an "howto" or "step by step" ? >> >> Sorry if i miss something. >> >> Thanks in advance. >> >> php5all >> > > It might be helpful if you explain what you are trying to do - that > way you can get better answers. Typical reasons include "I want to > learn more", "I want my code to go faster", and "I want to do > something that can't be done in C". In each case, the best course of > action could be different. > > mvh., > > David > > > ------------------------------------------------------------------------------ > > Own the Future-Intel® Level Up Game Demo Contest 2013 > Rise to greatness in Intel's independent game demo contest. Compete > for recognition, cash, and the chance to get your game on Steam. $5K > grand prize plus 10 genre and skill prizes. Submit your demo by > 6/6/13. http://p.sf.net/sfu/intel_levelupd2d > ------------------------------------------------------------------------------ Own the Future-Intel® Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
