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 Post subject: CNROM mapper question
PostPosted: Sat Mar 19, 2005 3:22 pm 
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Joined: Tue Dec 21, 2004 8:35 pm
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Location: Argentina
i have noticed in castlevania 1 and LiteForce (both use cnrom mapper), that the byte of ines file that correspond to prg rom is set to "8" and byte of chr rom is set to "0".
How can be set to 8 prg-rom if cnrom dont use more than 32k of prg-rom?
and how can be set to 0 if this mapper specifically swap chr-rom?

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PostPosted: Sat Mar 19, 2005 3:33 pm 
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Castlevania 1 and LifeForce are UNROM (mapper 2) which has PRG swapping and CHR-RAM.

CNROM (mapper 3) has no PRG swapping and CHR ROM. Solomon's Key is a example of a game which uses this mapper.


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