Hello Eduardo "Digital Signal Processing with C and TMS320C30" by Rulph Chaissing is a good book, but do keep in mind that there are plenty more resources out there. The places that come to mind that will have the highest density of applications include. The TMS320C3x Users Guide TMS320C3x General Purpose Applications Guide The DSK3 help file Digital Signal Processing Applications Guide, Vol 3 If you follow this link you will find a FREETOOL link (I did not try the link). Keep in mind that this is just a simulator and by no means perfect. The DSK you have will give you much better results. http://focus.ti.com/docs/prod/productfolder.jhtml?genericPartNumber=TMS320VC 33&pfsection_tools After you download this tool, be sure to download the 'Service pack 2' update. The link for that can be found here. http://focus.ti.com/docs/tool/toolfolder.jhtml?PartNumber=TMDS3240130 Also, I just noticed that this link is missing the VC33 DSK. The VC33 EzDSP 'DSK' is not *the* VC33 DSK. Hope this helps, Keith Larson ----------------------------------- At 05:46 PM 8/20/03 -0300, you wrote: Dear Sir Larson, I have bought a C31 DSK and I am starting to study it with the book "Digital Signal Processing with C and TMS320C30", and that book uses a simulator SIM30.EXE among other tools, like C compiler, assembler, linker, etc. Those other tools I have replaced with DSK3 Version 2.02 and TIC3X4X available from Spectrum Digital web site. As I am a subscriber of the C3X YAHOO group, I could get those tools, but now the simulator SIM30 which is used in the text is the only tool I need to follow the book page by page as a begginer in the field. I would like to ask you: is there a free version of SIM30.EXE, and how can I get it ? Thanks in advance, Eduardo G. Bertonha Federal Center for Technical Education of Parana DAELN - CEFET-PR Brazil +-----------+ |Keith Larson | |Member Group Technical Staff | |Texas Instruments Incorporated | | | | 281-274-3288 | | | | www.micro.ti.com/~klarson | |-----------+ | TMS320C3x/C4x/VC33 Applications | | | | TMS320VC33 | | The lowest cost and lowest power 500 w/Mflop | | floating point DSP on the planet! | +-----------+