nesdev.org

One 15 bit background tile? If I got it right, for the background there's one 15 bit register, you have to right to it in the exact moment the scanline is being rendered. You can double it horizontally by a factor of 2, 4 ... and that's for the left half of the screen, the right half gets a mirror ...

Yep, when I digged a little about Atari 2600 development, I got astonished...
5 sprites, one 15 bit background tile, no VRAM... original 2600 developers had to be heros.

Hi, do you know any other 8bit computer/console developers communities so great as NesDev or at least similar?
I mean, I've searched for, but can't find any.
I'm specially looking for commodore 64, but others will do also.

No, I don't want to sync to the pixel level.
Only to scanlines, to be able to do partial scrolling.
With sprite 0 hit it's very straightforward, but it only happens once per frame.

Dwedit wrote:...compensate by taking away or adding several cycles if you're not in hblank.

Is there any way to check for hblank?

NesdevWiki wrote:Even/Odd Frames : The PPU has an even/odd flag that is toggled every frame

Where is it? how can one read it?

Or there is another/a way to tell HBlank, or to syncronize with each scanline? or you just have to count cycles?

OP == Original Poster?
Let's see...

I might as well replace all the NMI routine for the one that you suggested: NMI: inc nmi_count rti All the other code just does things for functions like cprintf() and such. I yet have to figure out a way to access zp vars defined in an asm inc file, other than reading the memory address directly, w...

Nopez, doesnt'3 work

Ok I had to enable it in the cp.

uh-oh
It's liek lulz! nuthingz comes out!

Hi! just testing my wonderqewl signature, as older posts don't seem to show the new signaruter ( wow! that word just came out from the keyboard, and I like it more than signature )

Let's see:

That said, there are enough words in both languages which don't seem to come from Latin roots (what with the Moorish invasion into Spain all) that they were occasionally tripped up. Yes, it's curious how many Arabic words are in Spanish. I'm learning Arabic now, and you can clearly see some resembl...

Bregalad wrote:Oh you know about Asterix too ?

Oh yes, it's a very popular comic here in Argentina.
I guess French-specific jokes are easier to translate to Spanish, than English ones, or from other languages.

I was wondering, does someone know how was the development of NES games back in the days?
Did they have a special testing NES, flashable cartridges, did they program it from a PC, or what?
Any info on that?

The most simple NMI routine I've ever used was just this: NMI: inc nmi_count rti And that works just as well as anything I normally do. And then you would loop in your code, after the program's logic, waiting for nmi_count to become non zero, then start writing to VRAM? edit: Now, looking the sourc...