|
|
|
|
Joined: Jan 2021
Posts: 51 Likes: 30
Member
|
OP
Member
Joined: Jan 2021
Posts: 51 Likes: 30 |
Is there any information out there about being able to dump internal mask ROMs from H8 MCUs? I know that the EPROM/flash variants have a program/verify mode, but it's not really clear if that can also be used to read out the mask ROM variants.
I don't have any that I'm really itching to dump at the moment, but I'm wondering if it'd be worth trying with the one in the Casio FD-1 just in case it'd be useful for dumping more interesting devices in the future.
|
|
|
|
|
Joined: Mar 2001
Posts: 16,989 Likes: 84
Very Senior Member
|
|
Very Senior Member
Joined: Mar 2001
Posts: 16,989 Likes: 84 |
I don't think anyone's tried that, so it'd be good to know if those are dumpable.
|
|
|
|
|
Joined: Jun 2001
Posts: 68 Likes: 3
Member
|
|
Member
Joined: Jun 2001
Posts: 68 Likes: 3 |
Some variants taken from gambling games are getting set to someone to try and dump them, but I don't know if there are concrete chances of success. So having more people attempting it would be good.
|
|
|
|
|
Joined: May 2004
Posts: 1,741 Likes: 8
Very Senior Member
|
|
Very Senior Member
Joined: May 2004
Posts: 1,741 Likes: 8 |
the gambling ones are Flash parts IIRC, and all previous attempts to dump them have yielded empty results even following procedure, so those ones have some kind of readout security fuse even if it wasn't mentioned. I'd assume the mask ones do too, so no guarantee they'll dump using standard methods.
|
|
|
|
Forums9
Topics9,171
Posts120,123
Members5,039
| |
Most Online1,283
Dec 21st, 2022
|
|
These forums are sponsored by Superior Solitaire, an ad-free card game collection for macOS and iOS. Download it today!
|
|
|
|
|
|
