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Messages - GadgetUK

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Did you flatten the tape and make sure it's grounded?  Where did you position it because that is absolutely key - needs to be over cart traces on the NT itself, possibly on both sides, and you might require more than one piece over different parts of the PCB.

EverDrive N8 / Re: N8 testing with Analogue NT
« on: November 04, 2016, 11:41 PM »
I can't believe no one has tried grounded copper tape over the NT cart traces yet - Thats where my bet is, since the behaviour is almost identical to the impedance problems when using N8 famicom with 72 pin to 60 pin adapter.

EverDrive N8 / Re: Nes (72-pin) to Famicom (60-pin) converter mod
« on: October 23, 2016, 12:22 PM »
Allright! I removed the old tape and put some new one. Kirby works great now!
One thing that i noticed is with the old tape, the N8's self diagnosticte test gave chr: error 03 (on the NES itself it was fine) and now all tests are OK. maybe i did something wrong there.
Oh well, it works!
Great stuff!  Very interesting you got that error 03 - When I get another unmodified adapter I will test the diagnostics to see what it reports.  I've not had a single problem since doing the mod.   We just need someone to try the same copper tape fix on the Analogue NT motherboard cart traces now because I suspect that could solve the similar glithes that system has with the N8.

It works fine but one thing I would point out - the Megadrive PSU outputs more than say 9v, often around 13 to 14v.  That means the 7805 has to disipate a lot more heat.  It's better to use a 9v PSU (one that outputs 9v not 12, 13 or 14v).  But it will work - just means the 7805 gets hotter and the ambient temperature inside the famicom will be higher.   On my PC Engine and Famicom I've purchased cheap switching PSUs that output exactly 9v and they run a lot cooler.   It's not quite as risky in the Famicom as the 7805 is a distance away from the logic board but on the PC Engine the 7805 is mounted near the 6270 and the board temperature increases a lot because the 7805 location.   The 7805 will also live longer with a lower voltage - just based on the size of the heat sink on the famicom.

EverDrive 64 / Re: Everdrive 64 Compatibility
« on: October 15, 2016, 06:57 PM »
Does anyone know the situation of save support with Animal Forest on the v2.5?  Should I be able to save, do I need to specify a certain SRAM type before I launch the game?

I got to the save point a few times and it said it appeared to be working.  Held down reset for 3 seconds, and then loaded again to find no save =/

EverDrive 64 / Re: Aleck64
« on: October 08, 2016, 03:43 PM »
Just wanted to say thanks to all the people that worked on the patches for these games, and for the people sharing links to patched games.  Brilliant!  Are there any more of these yet to patch?  I saw the last comment there about an game yet to be dumped.

EverDrive N8 / Re: Nes (72-pin) to Famicom (60-pin) converter mod
« on: September 28, 2016, 09:30 PM »
Rub over the tape with a rag or something! All the ripples and bubbles vanish and it's then totally flat!

EverDrive N8 / Re: Nes (72-pin) to Famicom (60-pin) converter mod
« on: September 27, 2016, 08:14 PM »
As well as making sure copper tape is rubbed flat, make sure there's nothing on the PCB underneath.  I had someone tell me it wasn't working 100% - he had placed insulation tape on the PCB first, with copper tape on top of that - that won't work, the copper tape has to be as close to the traces and vias as possible.  Also check ground is good, and contacts on both edges of adapter are clean, and famicom slot is clean.  Slightly dirty ground connection won't help.  I also suspect that having severed m2 line at both ends, and replacing with a wire in series with 100ohm resistor helps, because then the m2 clock cannot interfere with nearby traces

EverDrive N8 / Re: Nes (72-pin) to Famicom (60-pin) converter mod
« on: September 22, 2016, 10:42 PM »
Will check it out but pretty sure I got past that stage last week!  Have you made sure the copper is smoothed flat by wiping over it?  Also check cart and socket edges are clean.  I've still not had a single fault since doing the mod!  Don't forget, I also have a seperate wired m2 line via 100ohm resistor too.

EverDrive N8 / Re: Nes (72-pin) to Famicom (60-pin) converter mod
« on: September 17, 2016, 03:07 PM »
It's working! Great Great job GadgetUK, i will update the guide soon with some pictures. I did a pretty bad job with fitting and taping the copper tape, so if anyone has some better work i would like to use their pictures if you can.

Awesome!!! That's 7 out of 7 where this has worked, so it's safe to say it is a fix for these adapters.  I think the same fix will work when trying to use an N8 on the Playchoice 10 (I've contacted a chap on YT and he's going to try it), and I believe the same problem is happening with the Analogue NT and N8 - but in that case I suspect the shielding wants to go over the NT main board cart traces, and I don't know anyone with an NT that has the skills to attempt this fix (yet).

EverDrive N8 / Re: What causes a gray screen when loading ROMs?
« on: September 12, 2016, 04:01 PM »
It could be dirty cart slot (I would also clean the evedrive cart edge as if its been sat in storage or tested on a dirty slot the cart edge could also be dirty).   Also possible you are using corrupt roms?    Is it just a 72pin N8 connecting straight to a NES - ie. you aren't using an adapter?   A dodgy cart socket can also cause that too!

EverDrive N8 / Re: Nes (72-pin) to Famicom (60-pin) converter mod
« on: September 09, 2016, 03:46 PM »
Great! ordered some right now. Will check it out once it gets here and let you know if everything works.
Again, thank you for researching it and finding a solution, once i see how it works for me i will update the guide.

How did you get on?  I was hoping to hear positive new and that would make 6 out of 6 where it fixed the issues!   I really wish someone would test this on an Analogue NT, because I believe the same issue is affecting that system with the ED too.  I did consider buying one but they seem to be around the $500 plus mark which is insane imo.

EverDrive N8 / Re: Games Not Working / Bug Reporting Thread
« on: September 03, 2016, 08:05 PM »
Space Shuttle Project does work correctly on the NES PowerPak.  MMC1 games control mirroring in through the mapper chip.  The type of error I have seen suggests that it is a CHR bankswitching issue, not a mirroring issue.
Very interesting!  I did wonder what if anything we could do about it.  I spent some time last night looking at the ROM and the header but I didn't get very far.  I don't think it is mirroring because the feature seems to work on other ROMs with the same header and mirror type.

EverDrive N8 / Re: Graphical Glitches/freezing with new N8 & Analogue NT
« on: September 02, 2016, 06:54 PM »
If you can post a pic of how it should look on the N8 side, I'll give it a shot.

See these pics as a guide:-

Just make sure your copper tape is smoothed down, is then grounded to a nearby ground point, and check you aren't shorting anything.   The copper tape I use has a stick insulated backing so its OK to put over vias, but not all copper tape might be the same.

It might not work as well at the cart end, the traces on the NT look a lot longer and I suspect that's where it will make the most difference.  That said, both boards look well designed, so you wouldn't expect issues, but I suspect its an impedance thing, neither devices were designed to be connected to modern hardware and both are modern hardware.  ie. NT was primarily designed to connect to old NES carts, and the N8 was primarily designed to connect to old NES and Famicom systems.

EverDrive N8 / Re: Graphical Glitches/freezing with new N8 & Analogue NT
« on: September 02, 2016, 04:53 PM »
That sounds like a good thing to try. If that fixes the issue, then that should be done on the NT side- which would require another trip to Washington...

The fix might work at the N8 end!  The alternative is to just open the NT and do the mod yourself.  If I had one I would have a go at this but the few for sale on eBay are insanely priced.

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