MMC1 PRG page switching

[Pennywise]

Hi all,

I've been workin on this mapper 1 game Mad City and I could use some with figuring out how it bank switches. The same switches banks for when the text is read that I know and I want to change it to something else. I've read Disch's mapper doc and know that it has to write to the internal registers 5 times in order for it to go through. I believe I found that code as it writes to $FFFF 5 times, but I don't understand how it's selecting the pages.

Edit:

It turns out I posted in haste. Firebugs doc provided more information and I was able to figure it out.

[3gengames]

Good that you found it out! Just gona point out another seemingly awesome site that has lots of information thats a good read.


http://kevtris.org/mappers/mappers.html


I think it's a member here's site. (More then likely) But even if not, it's still a great site.

[blargg]

Yeah, kevtris' docs are the first ones I turn to.

[tepples]

Thirded. I refer to them when editing wiki articles such as this one. His site could use some better organization though; the mapper docs are split between NES > Mapper Docs and Projects > Mapper Database > Mapper Database.