I am using ADC and DAC as part of my project. I need the functions such as adin, daout, itov, vtoi etc. But i don't have the header files which will include these functions. The header files has to be compatible in Unix operating system. I have the header files which are compatible in Dos mode. But these files as such I cannot use. If anybody knows about the source of these files in Unix, please reply to this article.