A
Apocalypse
Can't you use the everdrive cheat function?
- Thread starter Fluffy
- Start date
I think the point of this was to just do a straight, repo of the original mobo. It's useful from a preservation standpoint and it's also useful as a foundational starting point for people who want to do customization with other built-in functionality.
Now if you want to do something like a built in RGB or a JAMMA Edge you have the files for the core Nintendo stuff already done and it's just a matter of forking the design and adding your desired enhancements.
From a simple documentation standpoint maybe by being able to see all of the connections in the original system and better understand how they work is a good way to come up with new mods or otherchanges to the design down the road.
Maybe this isn't super useful from a "I want to use this to play Nintendo games" standpoint but I see it as extremely valuable from a knowledge/preservation standpoint and a jumping off point for new and interesting Nintendo-based hardware.
Redherring32
Beginner
twistedsymphony is correct, putting out a majorly improved PCB with RGB and such wasn't really the point, the point was documentation, and preservation of the original design, and to make it available to anyone who wanted to make their own custom designs, or to learn something new from the materials, or for those that just wanted to make use of it as is.
Unfortunately I don't have the time and energy to throw at R&D for an open source RGB mod these days, despite that being one thing I really want to do.
Regarding cases, I'm not sure if it's what you're looking for, but a guy that goes by Retrocution has made something that's a stand of sorts that showcases the PCB while allowing you to play it: https://twitter.com/_RETROCUTION/status/1250333915128025088?s=20
And I believe the intent is to put it on thingiverse so people can print their own.
Anyway, I appreciate the discussion and feedback!
Unfortunately I don't have the time and energy to throw at R&D for an open source RGB mod these days, despite that being one thing I really want to do.
Regarding cases, I'm not sure if it's what you're looking for, but a guy that goes by Retrocution has made something that's a stand of sorts that showcases the PCB while allowing you to play it: https://twitter.com/_RETROCUTION/status/1250333915128025088?s=20
And I believe the intent is to put it on thingiverse so people can print their own.
Anyway, I appreciate the discussion and feedback!
J
jassin000
But that isn't possible without the removal of existing/working CPU/PPU from an original console.
So I don't think its "fair" to refer to this as "reproduction" no.
If you are gutting a NES for its case, pulling its CPU/PPU for an alternative implemnetation why not include RGB?
Sure I can see not adding the JAMMA edge, that's super nith just to us... But RGB? WTF.
J
jassin000
Yea super unfortunate because I feel that is what's keeping this board from attaining true greatness/legendary status.
Not trying to rub it in, lord knows I'm not stepping up to this challenge. But stand by that criticism I do.
Look at it this way... Why would anyone buy Tim's RGB kit if this PCB preformed that function?
After all it requires you to also pull the PPU, so what's adding/pulling the CPU at the same time?
If no functional difference between this PCB and a "real" NES existed I can think of NONE/NO reason.
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it's a reproduction of the BARE PCB, nothing more...
the guys not making and selling these... it's information. it's like if I showed you a picture of a NES to say "here's what it looks like" and you complain that you can't play games on a picture.
Well, for me a reason would be just to build it, having clean sockets for everything, and using high quality components. And then just leaving it on a shelf... I would be happy just with the clone CPU/PPU mentioned on the github page, maybe with FPGA replacements in the future.
J
jassin000
Yea that does sound pretty cool.
Redherring32
Beginner
Muramasa will be selling individual PCBs, and I currently have some available too.
A
Apocalypse
Redherring32
Beginner
NESessity was independently developed by Low Budget, it's not related to my work.
A
Apocalypse
So two different persons worked on the same thing at the same time?
What a waste of time and energy! Unfortunately not uncommon, people seem to like to redo what others have done rather than doing something new,
Anyway, thanks @Redherring32 for your contribution to the community.
Would love to build one with RGB PPU. I wonder how difficult it would be to take the cpu/ppu from the NES mister core and make a small ppu & cpu fpga adapter pcb? small 5v compatible fpgas might be hard to find? Lattice maybe has some but they dont have any free designsoftware that I can find.
found the UniversalPPU on github but that was alot more complicated than I thought it had to be :/.
found the UniversalPPU on github but that was alot more complicated than I thought it had to be :/.
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For anyone else interested in restoring or a reproduction system using the opentendo, I found this (WIP) power board: https://github.com/mspinksosu/NES-Power-Board
It's not functional yet so it seems you'll need an original rf/power board in the meantime.
Also some of you may find this build interesting:
View: https://youtu.be/FpJ06KvhN0E
At 20:15 he shows a print he did of the aforementioned power board and discusses some of its issues.
It's not functional yet so it seems you'll need an original rf/power board in the meantime.
Also some of you may find this build interesting:
At 20:15 he shows a print he did of the aforementioned power board and discusses some of its issues.
biggestsonicfan
Professional
I know it's been a while, but Muramasa's site is showing out of stock and now someone wants me to repair their Nintendo, ahaha! Any chance I could snag one from you?
Redherring32
Beginner
They just sold out last night haha.
Yeah I've still got a bunch, just let me know what color you want via private message.
I bought a Famicom recently and was wondering about this...
https://wiki.nesdev.com/w/index.php/PPU_pin_out_and_signal_description
I assume "master" mode is the default for NES games, to write palette indices to EXT0-EXT3. Is that only the background data? Or is it just missing the highest palette index bit?
So your hack is to grab the palette data and write black/white into the internal palette, and then combine the palette index with sprite/bg info from the analog output, and map it through an external palette?
Alternatively, as you get the clock value that the PPU derives its internal timings from, I'm wondering if some kind of simplified NTSC/PAL decoder would be possible to derive digital YUV values you could re-map into RGB.
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A
Apocalypse
You need to intercept palette data, store it aside in a small RAM and feed the PPU with white ($20 or $30) or black instead ($xf).
You then get the palette index from EXT0-EXT3 but you have no clue if you have to look in the sprite or background table. Comparing the video signal level gives you the answer.
You then get the palette index from EXT0-EXT3 but you have no clue if you have to look in the sprite or background table. Comparing the video signal level gives you the answer.
