nesdev.org

A full PPU bus would have meant another 50 or so pins on the cart connector, and at least 3 more chips, since the PPU has two mostly independent memory busses. If they were ever considering a switched rom, they would have had to toss mode-7. Have the first 64 KB V-RAM and the second 64 KB cartridge...

Games like Doom on the other hand run pretty well in 256 colours. The DMA scheme is fast enough to let an outside controller render graphics in the VRAM of the PPU at acceptable frame rates. On NTSC, 256x150 graphics in 256 colours and constant 30 fps is absolutely possible. On PAL, this figure cou...

How fast is the DMA bus on the cartridge slot? I hope it's not limited to 2.68 Mhz like the DMA built into the CPU is. It is indeed limited to 2.68 Mhz. But hey, that's 2.68MB/s! It was enough to make DOOM playable on the SNES. I wouldn't consider this a step backward. With a modern microcontroller...

I find it a step backwards that Nintendo didn't connect the Super PPU to the cartridge like they did with the NES. There's no expandability! This would have meant at least 34 additional pins to the cartridge connector. The chosen way to update graphics on the SNES was obviously DMA, instead of CHR ...

Not exactly a "color" palette per say, but I find Donkey Kong Land on the GameBoy to look kind've creepy with it's 4 shade grayscale.

I hope there is some magical pin that lets the PPU read from the CPU's address space. That would allow tons of amazing hardware tricks being done. This would sadly be completely impossible. The only data connection between the CPU and the PPU are an 8 bit address (PA7-0) and data bus (CD7-0), allow...

I hope there is some magical pin that lets the PPU read from the CPU's address space. That would allow tons of amazing hardware tricks being done.

http://www.youtube.com/watch?v=5P8dH64m2Cc

Here is a little update. The diagonal shooting looks weird, because I didn't make a diagonal shooting sprite animation yet.

It's about making sure the internet has correct technical information from people who aren't being paid to "excite young kids." As long as the information is published in a source that is considered reliable within the scene, such as reasonably stable pages on wiki.nesdev.com or wiki.supe...

Who was being interviewed? The actual programmer, or some guy who represented the company and didn't know anything about programming? How do you know? I don't think two examples (which we haven't even seen for ourselves) are enough to condemn all developers of having over-inflated egos. They just w...

Illegal as in pure red, pure yellow, pure cyan and pure blue.

How does the Super Nintendo display NTSC illegal colors?

At a basic level, I believe it converts the 15-bit RGB to YUV, uses the UV to adjust the phase and amplitude of the color carrier sine wave, yielding chroma, adds Y to that, attenuates based on the brightness register, adds sync information, and outputs. That is, I don't think there's any filtering...

How does the Snes convert 15-bit RGB into an NTSC/PAL signal?

I can't find an audience for action games on Super Nintendo. The people who like Super Nintendo hate action games and the people who like action games hate the Super Nintendo. Layne's Law of Debate: Every debate is over the definition of a word . In this case, I'm not sure what you mean by an "...