On Wed, Mar 07, 2007 at 09:10:35AM -0500, Doug Franklin wrote.. > K.Takeshita wrote: > > > Also, I thought that firmware is something burnt into a ROM of the camera > > CPU and not supposed to be easily manipulated back and forth, no? > > It can be in read-only memory, and in that case you can't upgrade it, if > that's all that's available. More often what you'll have is some memory > that's read-only and some that's read-write. The read-write memory > contains the actual operational code for the camera and you can upgrade > it. The read-only part contains the basic bootstrap loader and utility > functions (like update the read-write memory) so they can't get messed > up in an upgrade and you can always change the upgradeable firmware in > the read-write part if something goes wrong.
Think of the ROM in your DSLR as yet another incarnation of the FlashROM that lives inside your SD or CF cards and you will understand how this fits together. Wilko -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
