> I want to read files from CD-ROMs and DVD-ROMs using > an 18F series PIC and interfacing to a DVD-ROM drive. > Am I right in assuming they're both ISO9660 file systems? > Does anyone have a good primer on them? (web/pdf) > David... Hehe, nope, you aren't right. :) Actually with CDROMs MOST of what you will find are in ISO9660 format, however it is possible to find other formats. For DVD-ROM UDF is getting to be very common, although ISO9660 is still there. As for interfacing it's not easy, aside from the FS you have to speak ATAPI, which isn't friendly to low memory devices. TTYL ---------------------------------- Herbert's PIC Stuff: http://repatch.dyndns.org:8383/pic_stuff/ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics