Ok, I can load a rom that doesn't have a mapper, no problem. However, I'm trying to get Metroid loaded, but it apparently doesn't have chrom and has 8 prgrom banks.
Looking at the rom file in hex editor and comparing the pattern table values displayed in FCEUX's Hex Editor, it seems that the graphics reside at prgrom bank 6(at 0x18010 in the rom file). Ok, that's great for Metroid, but I don't know what the general method is for extracting the graphics and loading them into the pattern table for any rom with no chrom.
I think it's just my ignorance in exactly what happens when the nes boots. I was under the impression that when the NES boots, it automatically loads the ppu's pattern tables with the chrom(worked for me so far...). But if there is no chrom present...then what? I've yet to see in the mm1 mapper docs, how the pattern tables are loaded, so I'm pretty confused here.
Where can I find info that describes exactly the structure of a rom file with a mapper? Or is it game specific? I doubt it though. But I also doubt that all mm1 roms put their chrram at bank 6(I haven't studied other ones yet, though)
Looking at the rom file in hex editor and comparing the pattern table values displayed in FCEUX's Hex Editor, it seems that the graphics reside at prgrom bank 6(at 0x18010 in the rom file). Ok, that's great for Metroid, but I don't know what the general method is for extracting the graphics and loading them into the pattern table for any rom with no chrom.
I think it's just my ignorance in exactly what happens when the nes boots. I was under the impression that when the NES boots, it automatically loads the ppu's pattern tables with the chrom(worked for me so far...). But if there is no chrom present...then what? I've yet to see in the mm1 mapper docs, how the pattern tables are loaded, so I'm pretty confused here.
Where can I find info that describes exactly the structure of a rom file with a mapper? Or is it game specific? I doubt it though. But I also doubt that all mm1 roms put their chrram at bank 6(I haven't studied other ones yet, though)