atari2600land's Blog

Are you using the same A/V cables for all systems? I'm thinking perhaps you're having some cable break or short between signal and ground that causes the image quality to deteriorate. Not sure why the image is off screen though, unless your TV is set up in some "Super cinema" setting that zooms the visible area, in particular as the NES will output a 4:3 signal and your TV might be 16:9 or 16:10, so instead of adding a letterbox around the image, it zooms and cuts it.

 

A new TV probably wouldn't help you, in particular as many of the newer sets completely eliminate older connections like composite video and other. In particular higher end brands, and in particular larger screen sizes. You might end up with a TV that can be used to watch TV and streamed video, but not much more. I know you'd simply get frustrated and regretful about your choice.

I'm using an NES cable, the one made specifically for the NES with the small gray box.

Small gray box? Sounds like the antenna filter, but I'm far from a NES expert. Do you use A/V input on the TV or the tuner to a channel?

 

I have a such cable with box but with the antenna connector removed. I tried to give it away a couple years ago, nobody wanted it despite Nintendo stuff otherwise tends to be desired in some quantity.

What's really odd is that commercially-made games work just fine. It's just the ones on the Everdrive that are blurry. I tested a game on my NES and it was clear.

Are you using the standard power supply? I'm thinking perhaps it is a bit on the weak side, and the NES would draw less power using a traditional cartridge than when using the Everdrive, containing more electronics, and taxing the power supply might lead to a blurry image. How is it, does the NTSC NES use 9V AC or 9V DC?

 

When I bought my second hand SNES a couple of years ago, the cheapskate seller supplied a 9V DC 300 mA power supply. While it generally is true that devices expecting AC often can be powered by DC (but never the other way around!), 300 mA was way too little for a device that wants a bit over 1A, possibly 1.5A even. It would boot up, but the display was glimmering in purple and green. Once I replaced the power supply with a decent one (I may have snipped the DC barrel connector as it was a good fit), it displayed exactly as intended.

Yes, I am. It has the Nintendo logo on it.

I saw you posted a thread about it two years ago:
https://forums.atariage.com/topic/339528-nes-everdrive-issues/

 

 

Did you ever try another SD card, or managed to completely reformat it in case it is the one causing issues? I've read elsewhere about graphic glitches using an ED, but not straight up blurriness.

The odd thing is that it's only the homebrew games I've made are the ones with blurring. Perhaps it is the way I'm compiling it, but I doubt it since the games I've made work fine on Mesen.