SMB3 real NES graphics artifact

[essial]

The graphics connector on my NES is a bit missed up right now so I want to see if this is a normal artifact. On the real NES, playing super mario brothers 3, do you guys notice a little bit of a flickery line thing a few inches long on the left side of the screen on the line between the game area and the status bar at the bottom? It seems like a scanline artifact more than anything but I wanted to make sure that it is supposed to be there.

[cpow]

The graphics connector on my NES is a bit missed up right now so I want to see if this is a normal artifact. On the real NES, playing super mario brothers 3, do you guys notice a little bit of a flickery line thing a few inches long on the left side of the screen on the line between the game area and the status bar at the bottom? It seems like a scanline artifact more than anything but I wanted to make sure that it is supposed to be there.

There is a flickering artifact in my emu. I have seen it in others. Perhaps in honor of the recent convo about accuracy you could post a picture of your screen and we could all compare our emu output to see who is most closely emulating the artifact?

[tepples]

It happens on an NES too:
[quote="Contributors to "Game Bugs" wiki page"]The first scanline after a scroll split is glitchy. This shows up as garbage above the left side of the status bar and as incorrectly scrolled lines in the "spade" (not N-spade) bonus game.[/quote]

[tokumaru]

SMB3 may be one of the most well known games on the NES, but this doesn't mean it's extremely well programed, even if it was made by Nintendo itself.

[essial]

My NES is still not moved over to this place yet, so I just play around with it while I'm at my grandma's (yes I'm 24 but we have had Sunday dinner with her every weekend for the last 10 years, I'm not stopping now :p). Now when I go over there I always jump on and examine the games and find little things like that. I do have a video capture card with analog input support so hopefully sometime in the next few months I can bring all of that over and set it up. Eventually I want to try to run the emu and NES side by side and see how close everything is.

As far as my EMU goes, the PPU code is still kicking my ass right now, but I'll get it

[Mista P]

I remember POW having a bar running underneath the main play screen when I used to play it on the ol' clasic tube TVs. Those SNK coders were tracking their code on some level apparently.

Do emulators now emulate what is happening further down on a screen? Beyond the main pixelated area that is assigned to the NES.

[Dwedit]

In POW, that's just the top several scanlines of the background being drawn with the wrong tileset, not a meaningful bar.

[Cheesemeister]

A very similar-looking glitch appears on the stage select screen of Mega Man 3. It may have also shown up on the pause menu, but I don't recall precisely.