nesdev.org

That got me confused because the PPU address register is actually $2006 Yes, you all right it's effectively $2006. It's just an error from my part. My code is confusing I know, that's why I reorganize it. I remake the buffer function, for being able to draw an amount of columns. Like this I could p...

I continue, I am just in reflexion about reading my level table, and build my buffer. ( I think it's the hard part) Just for show my RAM part : ;--------------------------------------------------------------------------------------- ; RAM ;------------------------------------------------------------...

For the moment, I use just MMC1 mapper with vertical mirroring.
I will do some basics test before doing all the great stuff.

Tomorrow, i show you my code regarding $2000 and $2005. (it is very late at night in France !)

Thanks for your help again

Sure it will help me. It's true reverse my buffer need just more time like this (it isn't in my NMI loop): ; Buffer_Shift = Line position ; Fix for backwards write lda #30 ; load one column sec ; set the carry sbc Buffer_Shift ; subtract Buffer_Shift sta Buffer_Shift ; save the low byte I try it to ...

For sure, it's a good idea. I will simply use a backwards buffer.

Thanks for your helps

Since you don't have a lot of data to update That's right for the moment. I was thinking that I can do one column drawing during VblankTime. This must happen when scroll ! Don't you mean "column" instead of "row"? Ho sorry for my understanding, it's a bad french translation from...

Hello everyone. I'm just a new member, and I read lost of posts. I need your help about method, I know how to do, but I don't know what is the most optimized method. It's just about drawing one row per NMI event, that's for begin able to do scrolling. For the moment, I use a Buffer of 30 bytes in RA...