In message , at
23:14:56 on Mon, 14 Jul 2008, Tom Anderson
remarked:
To my mind, it has to be modifiable to be firmware, which makes code in
a ROM not firmware. Although thinking about it, my mind is probably
wrong on this point.

Lots of people these days take the precaution of making firmware
upgradeable, but that's not part of the definition - which is
non-volatile software providing the lower levels of API (not the user
interface) to a dedicated bit of hardware.
--
Roland Perry