In reply to this post:
I don't think you can call CV3 as a hack. A hack would be to tricky replace all mapper writes by JSR commands so that another routine is called. I think Konami just ported their game to MMC5 mapper for some reason. (Nintendo seems to not allow Konami to use their VRC outise of Japan ? For some reason Sunsoft was able to use their FME-7 for Batman - Return of the Joker).
They would have to change the music anyway, or include adaptaters to input on the bottom NES connector, wich I don't think Nintendo allowed either.
A lot of other games were ported from older VRCs to UNROM, and some (like Contra) were degraded. However, Konami could use Contra as-is with the MMC3 and very few mapper hack (I did that), instead of downgrading the game and compress graphics to hell to fit a smaller UNROM cart. Or maybe they did just the UNROM version first, and just added cutscenes in the japanese version right before the release ?
I don't think you can call CV3 as a hack. A hack would be to tricky replace all mapper writes by JSR commands so that another routine is called. I think Konami just ported their game to MMC5 mapper for some reason. (Nintendo seems to not allow Konami to use their VRC outise of Japan ? For some reason Sunsoft was able to use their FME-7 for Batman - Return of the Joker).
They would have to change the music anyway, or include adaptaters to input on the bottom NES connector, wich I don't think Nintendo allowed either.
A lot of other games were ported from older VRCs to UNROM, and some (like Contra) were degraded. However, Konami could use Contra as-is with the MMC3 and very few mapper hack (I did that), instead of downgrading the game and compress graphics to hell to fit a smaller UNROM cart. Or maybe they did just the UNROM version first, and just added cutscenes in the japanese version right before the release ?