nesdev.org

Surely at least the RF modulator must be different as Japan uses different TV frequencies?

blargg wrote:Here's the test ROM. Keep pressing reset until you get the glitch (get the appropriate CPU-PPU alignment)

On a Famicom resetting isn't enough, you need to power cycle the console.
This is because the PPU isn't reset on the Famicom, right?

Now I've seen it in Zelda 1, too.
It's a lot less frequent than in Mario. It only happened on a few horizontal screen transitions in the overworld.

Surely this is related to horizontal scrolling somehow?

I neglected to mention in my first post there is actually one other game I have noticed this on, namely Zelda 2 (on FDS) I haven't tested it as much as SMB, but it seemed similar enough. It only appeared on 1 or 2 startups (out of maybe 10~15 it took me to play through the game) and I think the line...

This little thing has been bothering me for some time now, so I though I should try to get to the bottom of it. It's a bit hard to explain, but basically it's a one pixel/scanline tall, variable length line of "glitchyness" that appear seemingly completely randomly during SMB gameplay, abo...