Nina KalininaJan 29

Casio BN-20 ROM dump is in progress. 52 jumper wires is a mess. We seem to have a couple of address bits flipped, because the data looks ALMOST right but not quite, with every 16 bytes out of order.

Our programmer/flasher tool only has 40 pins, so we're dumping upper/lower byte separately.

Show threadNina KalininaJan 29
I guess we'll continue tomorrow, because it's a bad idea to do precise operations when tired, with a risk of destroying the only copy of the chips
Show threadNina KalininaJan 30
And we've struck gold with the ROM. 2 megabyte of ROM, what did Casio put in there? Well, loads of screenshots and a bunch of UI stored as bitmaps, of course.... thread
Show threadNina KalininaJan 30
more bitmaps from teh ROM!
Show threadNina KalininaJan 30
and more, it just doesn't end. You'd expect there's a UI builder, but when you have 2 MB of ROM on an x86 device, you might as well just pre-render everything
Show threadNina KalininaJan 30
the ROM is seemingly endless, why so many images are stored in it, are you a real OS or just a combination of mocks with transitions between the images
Show threadGerardJan 30
@nina_kali_nina There are certainly UIs out there like that. I know of at least one in-car touch screen system, and I suspect most, maybe all, are like that.
Seems to be the preference for embedded stuff where I assume it's more predictable and uses less energy. Of course, they don't need to share design aesthetics between independent apps, either. Or support custom skins!
I guess power might be the reason for Casio, too?
Although some of those images are quite surprising.
Show threadGerard
@nina_kali_nina oh, I'll just note I've now seen a similar thread here: https://tech.lgbt/@nina_kali_nina/115981342994868948
Jan 30 at 11:27amWeb