NefMoto

Technical => Flashing and Chipping => Topic started by: carlossus on November 04, 2011, 05:29:56 AM



Title: Hot swapping Flash chips after booting.
Post by: carlossus on November 04, 2011, 05:29:56 AM
I’m making a simple flash chip selector circuit so I can toggle tunes using the number of pulses on the ignition switch.
I need to be able to boot from A then switch to B to be able to flash a blank or corrupted device and vice versa.  Are there any implications in doing this say.. 10 seconds after boot time?

e.g.
Enable Flash A (with good image)… . . . . .  .  .  .  .  .   .   .   .   .Boot… . . . . .  .  .  .  .  .   .   .   .   .Wait 10s… . . . . .  .  .  .  .  .   .   .   .   .Enable Flash B… . . . . .  .  .  .  .  .   .   .   .   .Connect Nefmoto and re-flash over blank image.

Or can I reduce this time somewhat?
Thanks.


Title: Re: Hot swapping Flash chips after booting.
Post by: kls on November 06, 2011, 01:04:44 PM
I used this technique via a toggle switch and the CE# line - worked fine all but one time. To really know if the flash gets accessed at other times you'd need to scope it.