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 threadLuci Bitchface AngerfootJan 30
@nina_kali_nina you can dump roms? i have desperately wanted rom dumps for two devices: The Etch-a-skatch Animator 2000, and the casio secret sender JD-6000
Show threadNina KalininaJan 30
@bri7 well, if the ROM can be read out, then, generally speaking, yes. Anything that is smaller than 48 pin NAND/NOR and without encryption.
Show threadLuci Bitchface AngerfootJan 30
@nina_kali_nina these are both devices from the 1980s and early 1990s.
I would be surprised if they had epoxy blobs even
Show threadLuci Bitchface Angerfoot
@nina_kali_nina their main issue is their relative rarity
Jan 30 at 1:16amWeb