31 Dec
2008
31 Dec
'08
10:49 a.m.
What do people do regarding microcontrollers (old or
new) with
embedded ROM? I
mean an EPROM or PROM's just address lines and data, so reasonably easy to
dump - but presumably life's a bit more difficult when the ROM is
local to the CPU...
If you're lucky, eitehr th microcontroller is old enough not to have any
security features, or they're not used. In which case you remove the chip
from the PCB and stick it in a suitable programmer.
If you're unlucky then either the microcontroller doesn't have any
external access to the ROM (some mask-programmed ones are like that), or
the secutrity bit has been set so you can't read it out. In which case,
alas, you just pray it never fails...
-tony