Is it somehow possible to draw the shadows for the LCD elements using the shaders or artworks? The artwork above has the shadows for the non-LCD elements of the screen (planets, stars), so the shadowless LCD elements look a little out of place.
http://seanriddle.com/starfox1.html It's decapped, 'raw' ROM has been verified and I did look into it for a bit, a year ago. SM530 disassembler was added to MAME, but since ROM column/row layout is unknown, it's very hard to reverse engineer.
ah ok, I must be confusing it with something else then
given that both 'raw' dumps end with a sequence of 00 and ffs and share a similar structure then I'm inclined to think it's probably not the most complex of decodes probably just the 'top' and 'bottom' interleaved with maybe a bitswap
I don't think you'd get 00 / ff grouping if it was much more complex / there was something going on with the addresses too.
Is it somehow possible to draw the shadows for the LCD elements using the shaders or artworks? The artwork above has the shadows for the non-LCD elements of the screen (planets, stars), so the shadowless LCD elements look a little out of place.
That would be great. I tried using the alpha tag within the lay file but couldn't get it to work. You could, alternatively, use the background which has no shadows
http://seanriddle.com/starfox1.html It's decapped, 'raw' ROM has been verified and I did look into it for a bit, a year ago. SM530 disassembler was added to MAME, but since ROM column/row layout is unknown, it's very hard to reverse engineer.
ah ok, I must be confusing it with something else then
given that both 'raw' dumps end with a sequence of 00 and ffs and share a similar structure then I'm inclined to think it's probably not the most complex of decodes probably just the 'top' and 'bottom' interleaved with maybe a bitswap
I don't think you'd get 00 / ff grouping if it was much more complex / there was something going on with the addresses too.
Actually the 00/ff are the TR $00 (code 0x80) at the end of every page :-)
ah ok, I must be confusing it with something else then
given that both 'raw' dumps end with a sequence of 00 and ffs and share a similar structure then I'm inclined to think it's probably not the most complex of decodes probably just the 'top' and 'bottom' interleaved with maybe a bitswap
I don't think you'd get 00 / ff grouping if it was much more complex / there was something going on with the addresses too.
Actually the 00/ff are the TR $00 (code 0x80) at the end of every page :-)
OG.
that will teach me to comment without knowing the architecture ;-) at least they were a useful indication of something
So... I did things kind of out of order here. While looking for more G&W stuff (you guys have got me on an LCD kick now), I stumbled upon the handheld "Catch a Coke" thing, and read up on everything I could find for it... except this thread. Made an offer to someone for the handheld version... he wanted too much, so I skipped out on it. Next day, I see the auction for the full machine one, mentioned in this thread from almost three years ago. Made an offer on that one, and then I see the original mention in this thread. Guy accepted the offer, so it would be rude to back out.
I figure this way, Rik doesn't need to sacrifice his for dumping needs, if dumping it requires destructive methods. Would Sean still be the person to send this to? Or someone else? Would also need the backdrop scanned, and the front face of the machine scanned.
Rik sold his handheld collection a while ago. uCOM-75 isn't dumped by anyone yet, and AFAIK hasn't been decapped before either. So it's unknown if the bits will be visible, and rom row/col layout is unknown.
I bought a couple of upd7508s a few months ago since that one is used in the IXO TC101. I just bought a upd7502 and decapped it. I can't see the bits on either of the dies. I haven't tried removing the top metal layer on either chip yet, but on all the other NEC chips I've decapped, I've been able to see the bits with it in place. I'll try to get these cleaned up, take pics, then remove the top metal layer and see if the bits are visible.
![[Linked Image from i.imgur.com]](https://i.imgur.com/hFzVOAK.png)
