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Just add a customized .cmd file into your project besides the automatically generated one. For example, your project name is p1, after using BIOS configuration tools, p1cfg.cmd is automatically generated, and in which a block of memory called ALIGN_DATA is configured. If you want to put the aligned buffer into section ALIGN_DATA, you should add a customized cmd file as following(i.e. named link.cmd) to your project: ////////////////////////////////////// -lp1cfg.cmd SECTIONS { align_buffer:{ *(align_buffer) } > ALIGN_DATA , align(128) } ///////////////////////////////////// Of course, you have to define section "align_buffer" in your C using #pragma -Chunyan --- In , Markus Bren <markus.buehren@l...> wrote: > Hi! > > I want to use the fir function of the dsplib on a DSK5416 and have a > question about circular buffers and memory alignment. As far as I > know it is possible to do it this way: > > 1. Use some "#pragma DATA_SECTION" command in the C++ code. > > 2. Use some "align (N)" stuff in the linker command file. > > I am using DSP/BIOS in my project and the DSP/BIOS configuration tool > maintains the linker command file called <projectname>cfg.cmd itself. > So I do not have to care about the very low level details of memory. > > If I want to use the fir function now following the steps mentioned > above, I have to use a different linker command file that is no > longer automatically changed by the DSP/BIOS configuration tool. But > this means I have to care about memory things now! > > Isn't there an easier way to go without leaving C++? > > I would appreciate any advise or comments of those who also work with > the dsplib! Thanks in advance! > > Markus |