How to emulate USB (flash drive) as a CDROM?

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FINALFANTASYFAN

Joined: 22 Mar 2007
Posts: 32

19 Oct 2009 3:30 How to emulate USB (flash drive) as a CDROM?

I'm working with USB interface to connect my embedded system to PC using PIC uC. Now, there's matter that I want to embed the firmware for my product inside the device, then customers have no need to carry any extra-CD along.

Why I dont use Mass-storage USB class for this purpose? Because, CD is read only! Customers won't accidently format the drive and it will be immune from virus. So it is safe for use!

But, I don't know how to emulate a CDROM as the way U3 does. Does anyone know how to do it or just the principle of how U3 work?