>No.  Don't EVER put anything in that slot.  The ROM is soldered onto your
>logic board.  Apple just left the slot there for potential future
>upgrades...which never materialized. It's supposed to be empty.

Just wondering.... would it be possible for someone with an EPROM 
reader/writer, some technical know-how, and a little patience to 
"copy" the Open Firmware ROM from a New World Mac on to a PROM SIMM 
(and make the necessary parameter changes, of course) to give New 
World features to an Old World machine?  I guess the main reason I 
want to know is because I think it would be terribly useful to be 
able to use Open Firmware instead of BootX to load Linux on Old World 
PowerMacs with the ROM upgrade slot (7500, 9500, etc).  BootX is 
terribly inefficient.

I know clone companies used to illegally copy Apple ROMs, and that 
you can copy 68k ROMs for use with emulators, and that it wouldn't be 
commercially viable because Apple furiously responds to companies who 
copy their ROM... but still, is there a technical limitation that 
would prevent someone from doing this?  (Purely a hypothetical 
question, I don't have the patience or extra motherboard to fry, 
although I do have access to an EPROM machine.)
-- 
--Chris

PM 7500/604e 200Mhz
4 gig SCSI
256 megs
OS 8.6
(This machine rocks!)

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