krikzz, are you interested in debugging white artifacting issue?

[desy]

In reference to http://krikzz.com/forum/index.php?topic=5295.0

The community is finding that some NES models exhibit "white artifacting" for certain games on the everdrive. Basically little lines flicker very quickly around the screen with a ranging interval of 0.5s-5s.

Is there any specific data that you would be interested in seeing? Is this something you think could be fixed through a software update, or is it just a HW incompatibility (ie. bad luck NES console, or future EDN8 HW rev) ?

An NES exhibiting this behavior could be mailed to you as well if you are unable to reproduce.  I still need to pop open my NESes and see if they match up to findings from Donholio and zansatsu0 and folks

Some observations:

• Approximately 8 out of my 10 NES I own show this issue. 2 of them don't.
• Not all games exhibit this. Ones that do include Tetris title, Punch-Out while boxing
• Original carts of games like Tetris and Punch-Out have no issue on any systems
• Does not seem related to the wall power brick itself, likely the type of PSU
• NES-CPU-6 + ALPS power board = no issue
• NES-CPU-8 + Mitsumi power board = no issue
• NES-CPU-10 + Mitsumi power board = ISSUE
• NES-CPU-10 + ALPS power board = ISSUE (but less bad)
• The problem seems to always follow the board / EVN8 combo
• Recapping didn't seem to help
• Not related to 72PIN connection issues, both cleaned and replaced did not help across many systems.
• Members are willing to do scope probing if that helps

Please let us know if further investigation may deem fruitful. Thank you, and we love your products!

[thecavalry]

I don't have this issue on any of my NES systems with the Everdrive. I own both Everdrive N8 NES and Famicom. I use an AV Famicom (with Hi-def NES mod), NES (standard composite), and an AVS.

I have never seen these artifcats on my games, and Metroid and Punch-out! are definitely games I have played on all three systems with both everdrives.

[desy]

Yeah seems hit or miss depending on the NES. Try Nintendo's Tetris and watch the first splash to see if you notice anything.

[thecavalry]

Just tested on the AV Fami since it was nearby. No artifacts.

Where are you sourcing the ROMs from?

[Donholio]

I usually source from SmokeMonster ROM set. The issue follows the board revision. CPU-10 systems I have all show this issue.

[brianvgplayer]

One thing I noticed is that the latest stable firmware for AVS doesn't have the artifacting issue, but the beta firmware does.

[jordiway73]

I thought it was my TV was going bad lol

[desy]

We are seeing the issue with front-loader NES.

[Brachabre]

Same, but need to verify if it's still happening after the latest OS update(s).

USA front-loader + ALPS power board + NES-CPU-10 (also need to verify)

[EvilMilkshake]

Same, but need to verify if it's still happening after the latest OS update(s).

USA front-loader + ALPS power board + NES-CPU-10 (also need to verify)

He may have been referring to the AVS update, not the N8 firmware, as I still have this issue on V15.

Also, I have this issue on my CPU-07 with a Mitsumi. It does have the revision G PPU.

[onegoodsoul]

Same issues here - Everdrive N8 from StoneAgeGamer.com + latest OS installed.

[desy]

bump... now that krikzz is back

[KRIKzz]

Droped it to my todo list. Will look on this when will working over next update

[desy]

Thank you krikzz. Let us know if we can help.

[Bester]

I have an AV Famicom (NTSC-J) with an "EverDrive N8 Famicom" and a Toploader (PAL) with an "EverDrive N8 NES". ROM set is smokemonster, sdcards are sandisk, powersupplies are 3rd party but of precise recommended spec/known to be good. Both are NESRGB modded by an installer Tim recommends.

I have no issues with the AV Famicom & Everdrive period (it's flawless). However I have the issue described here i.e. "white artifacting" on the Toploader with some of the games mentioned by others (i.e. Metroid). If I use the original Metroid cart, no problems ever.

If you require any further information please let me know.