In the Wiki page for the MMC1 it states:
1 - Bank $C000-$FFFF is fixed to the last 16KB of PRG ROM, while $8000-$BFFF is swappable via Register 3. (power-on default)
However I pulled a mmc1b2 off a zelda cart and attached it to my parralel port. When i pull A14 and low it addresses the last 16K page in rom and When I pull A14 high it addresses the first 16K page. Is the info in the wiki a typo or is there something that I'm overlooking? perhaps It suppose to say
1 - Bank $C000-$FFFF is fixed to the FIRST 16KB of PRG ROM, while $8000-$BFFF is swappable via Register 3. (power-on default)
I am working on reverse engineering this chip and want to make sure it's accurate.
Thanks Zack
1 - Bank $C000-$FFFF is fixed to the last 16KB of PRG ROM, while $8000-$BFFF is swappable via Register 3. (power-on default)
However I pulled a mmc1b2 off a zelda cart and attached it to my parralel port. When i pull A14 and low it addresses the last 16K page in rom and When I pull A14 high it addresses the first 16K page. Is the info in the wiki a typo or is there something that I'm overlooking? perhaps It suppose to say
1 - Bank $C000-$FFFF is fixed to the FIRST 16KB of PRG ROM, while $8000-$BFFF is swappable via Register 3. (power-on default)
I am working on reverse engineering this chip and want to make sure it's accurate.
Thanks Zack