nesdev.com

I seem to remember retroUSB's NWC repro putting "Reproduction Cartridge" on the label where one might expect "Competition Cartridge".

Nintendo used "Power Processing" in print comparison ads such as "Smashing the Myth About Speed and Power" . "Power Processing" in the ad refers specifically to three things: HDMA affecting things other than BGxHOFS, background mode 7, and color math. It appears Nintendo was choosing specific hardwa...

3. The buttons are laid out so you can hold down the strafe button and press shoot in the same button grip as the common hold run and press jump. I noticed the streamer who played it wasn't strafing, do you remember if you did? Compare the two modes of Smash TV . In the arcade, it was a twin-stick ...

On 16:9 display, underscan at left and right is common.

Concentration Room suffers from this, as it uses white as the common color for reasons related to limits of my tooling in that era.

I'm the lead programmer for an NES game in development, and the fact that the side borders are not black bothers the person to whom I report. The borders stand out about as much as the blue side borders in the title screen of Nintendo's Super Mario Bros. 2 (pictured). smb2title.jpg How many other pe...

I wrote translators from NESASM to ca65 and from ca65 to ASM6 in Python that you can use for reference.

How to scroll within the 512 pixel box: Set scroll X to player X, clamped to 0-255 How to scroll bigger: Form a data structure for map data, then draw columns as they're about to scroll into view, as illustrated in Nova the Squirrel https://wiki.nesdev.com/w/images/b/bf/NTS_scrolling_seam.gif Using ...

If you feed an ordinary CHR to pp1pack, does it come out with what tokumaru has called Codemasters format?

You can DMA from ROM to VRAM, from WRAM to VRAM, or from ROM to WRAM with a fixed source address.

From fullsnes description of $4300:

4-3 A-BUS Address Step (0=Increment, 2=Decrement, 1/3=Fixed) (DMA only)

Last I read, ViacomCBS's terms and up-front fees weren't friendly to amateur or small-time professional licensees. I don't remember where I read it, but I vaguely remember 40,000 USD just to open negotiations.

At baseband (not RF), NTSC-J is so close to NTSC that very little bothers to correct for the relatively small differences in black level, primaries, and white temperature.

PAL-M is 480 of 525 lines and 60 Hz, as anyone familiar with the history of analogue video in Brazil would be aware. The difference between PAL60 and PAL-M is that PAL-M is a standard using a chroma subcarrier frequency close to NTSC's 3.58 MHz, whereas PAL60 is a nonstandard format using the same 4...

If it shows promise to be a worthy spiritual successor to Balloon Kid/Hello Kitty World, I'm all for it.

On Super NES, setting brightness to negative turns rendering off (also called "forced blanking"). I'm not sure I understand what you mean.

The equivalent to turning everything off is writing a negative value ($80-$FF) to brightness ($2100).