Awesome update! Love seeing progress on this project! 👍🏻 Regarding saving... why not just add a battery to the CHR SRAM; and reserve a few tiles at the end as the "save file" (e.g. instead of loading in all 512 tiles... only use 510 of them at a time for actual graphics, and using the 32 saved bytes as the as the save file? Yeah, the entire SRAM would be battery backed, but that's okay, it won't hurt anything, and many battery backed games used most of the SRAM as Work RAM anyway... ) I think using PPUADDR and PPUDATA should work to be able to read and write to those bytes, and players expect saving to take a moment anyway... The one hiccup I think you'd have though is, I'm not sure if any emulators / flashcarts would support battery backed CHR RAM... I just think it's probably better than a password system...
@@Memelvar So... also... I feel dumb now, but I was looking at the NES header format... it looks like there is just a bit you can set to specify that there is battery backed PRG RAM present at $6000-7FFF. -- Regardless of the mapper type. -- I think Alwa's Awakening is a game that uses UNROM 512 with CHR RAM, and also has a battery backed SRAM for game saves... -- it works in emulätors and has a physical cartridge release.
@@BrainSlugs83 as far as I know Unrom 512 is a bit different, but this flag should not work with the regular unrom. I haven't tested it personaly though.
In the part where you said- "...if I was barbaric..." are you saying you can really just detach the chip from any FC game and replace it with a chip containing your own game?
Not just any, but the cartridge that uses the same mapper. That's how "Dynamite Batman" cartridge got really rare and expensive, because people were buyng the cartridges and replacing the rom chips with "Mr. Gimmick"
This game just keeps getting better and better
Cool progress, as always!
Thanks!
Great way to have additional memory. Nice work on title screen and other visual improvements.
Geras vizualizavimas aiškinant tikrai labai padeda. Gerai padirbėta 👍 Buvo idomu
Malonu girdėti
very educational, thank you! learned a lot
Labai įdomiai. Atrodo kažką supratau. Dabar belieka tai įsiminti... Bet tai jau kita istorija.😅
nice, stengiaus daryt suprantamiau
Awesome update! Love seeing progress on this project! 👍🏻
Regarding saving... why not just add a battery to the CHR SRAM; and reserve a few tiles at the end as the "save file" (e.g. instead of loading in all 512 tiles... only use 510 of them at a time for actual graphics, and using the 32 saved bytes as the as the save file? Yeah, the entire SRAM would be battery backed, but that's okay, it won't hurt anything, and many battery backed games used most of the SRAM as Work RAM anyway... )
I think using PPUADDR and PPUDATA should work to be able to read and write to those bytes, and players expect saving to take a moment anyway...
The one hiccup I think you'd have though is, I'm not sure if any emulators / flashcarts would support battery backed CHR RAM... I just think it's probably better than a password system...
Thanks! Haha, that's an interesting idea. It will be amusing to try it out for fun.
@@Memelvar So... also... I feel dumb now, but I was looking at the NES header format... it looks like there is just a bit you can set to specify that there is battery backed PRG RAM present at $6000-7FFF. -- Regardless of the mapper type. -- I think Alwa's Awakening is a game that uses UNROM 512 with CHR RAM, and also has a battery backed SRAM for game saves... -- it works in emulätors and has a physical cartridge release.
@@BrainSlugs83 as far as I know Unrom 512 is a bit different, but this flag should not work with the regular unrom. I haven't tested it personaly though.
I Like it!
In the part where you said- "...if I was barbaric..." are you saying you can really just detach the chip from any FC game and replace it with a chip containing your own game?
Not just any, but the cartridge that uses the same mapper.
That's how "Dynamite Batman" cartridge got really rare and expensive, because people were buyng the cartridges and replacing the rom chips with "Mr. Gimmick"