Herbert Graf wrote:

>>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
>
>

The ATAPI stuff I've done previously. (with a 16F877 device)
I'll have to ask the client about the authoring of the discs that I
need to read. They will be specific for this application. It looks
like the CD will be ISO9660 and the DVD can be read using
UDF or ISO9660 format. (according to some further Googling)
I'll start with ISO9660 on CD and work from there. Hopefully
on of the mp3 player projects on the 'net should shed some light.
David...

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