Firmware is very hardware specific. It doesn't matter what platform your running it on, what sort of operating system your using, what sort of CPU your using. None of that matters.
You can run firmware ripped from a PowerPC OS X driver in Windows XP driver on x86 or a Linux machine on Sparc or ARM. It doesn't matter. It's tied to a paticular peice of hardware and it's completely worthless for any other reason of application.
There realy isn't any reason to know what it does or how it works, beyond what is nessicary to write device drivers. No reason to have to go modify it or whatnot.
Although if I have a choice I'll avoid hardware that requires seperate firmware. If the manufacturer is just to cheap to invest in a little peice of ROM for their devices then what else did they go cheap on?
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