Results 1 to 6 of 6

Thread: NES/Famicom Toploader PPU video & audio mod

  1. #1
    Pac-Man (Level 10) treismac's Avatar
    Join Date
    Mar 2011
    Location
    Savannah, GA
    Posts
    2,025
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default NES/Famicom Toploader PPU video & audio mod

    Is anyone familiar with this mod?



    Evidently, he swapped out the NES' Picture Processing Unit (PPU) with one from a Playchoice 10, making the colors much brighter and the picture crisper. The modder also replaced the audio chip. The embedded video shows the difference in sound and audio quality in the Famicom version of Contra. I have to say, I'm kinda interested. What does anyone know about this mod? Does it require cannibalizing a Playchoice-10 or are there other ways? How much cash would something like this probably take to make happen?

  2. #2
    Key (Level 9) Satoshi_Matrix's Avatar
    Join Date
    Jan 2011
    Location
    Ontario, Canada
    Posts
    1,956
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts
    PSN
    Satoshi_Matrix

    Default

    You're a little misinformed, but that's okay, i'll still answer your questions.

    I know the guy who did the mod you're referring to. The purpose of replacing the PPU is to output RGB, which is what the arcade Play-Choice 10 and VS Cabinets used. Using RGB doesn't make the colors "brighter" or "crisper" but it does adjust NES software to use the RGB color pallet and a pure RGB signal is much cleaner than a composite signal produced by the stock NES PPU.

    The PPU capable of RGB, the RP2C03, was only present in Nintendo Play-Choice 10s, VS Cabinets and the Japanese Famicom Titler. The Titler is very very rare, so generally speaking the only way to get a RP2C03 is to cannibalize one of the Nintendo cabs.

    The guy who make the example you posted used a special $150 board imported from Japan that adds extra bass to the noise and triangle channels. It also includes all the parts to amplify the video signal and can also the RGB to S-Video.

    So assuming you have the skills to fully modify it yourself, you'll need a arcade board with the correct PPU, parts to amplify it, a Famicom or NES and also the $150 Japanese board for S-Video/Extra Bass.

    You'll looking at around $400 minimum if you can do it yourself, $700+ if you get someone else to do it for you.

    Myself I have a RP2C03 installed in an AV Famicom that's feeding the RGB through European SCART of which I then adapt into component video. The audio benefit alone isn't worth spending the extra cash on.
    check out my classic gaming review site: http://satoshimatrix.wordpress.com/

  3. #3
    Pac-Man (Level 10) treismac's Avatar
    Join Date
    Mar 2011
    Location
    Savannah, GA
    Posts
    2,025
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by Satoshi_Matrix View Post
    I know the guy who did the mod you're referring to... Myself I have a RP2C03 installed in an AV Famicom that's feeding the RGB through European SCART of which I then adapt into component video.
    Did this fellow mod your AV Famicom? Also, do you have an article on your blog or a video on your youtube channel showcasing this modded AV Famicom that you have?

  4. #4
    Insert Coin (Level 0)
    Join Date
    Sep 2009
    Location
    California
    Posts
    112
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    The above poster is correct, people have been doing this for years, if you want to read some info on the process you can take a look at this site;

    LINK

    The place to get the PCB/kit in that picture is here (Japanese)

  5. #5
    Key (Level 9) Satoshi_Matrix's Avatar
    Join Date
    Jan 2011
    Location
    Ontario, Canada
    Posts
    1,956
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts
    PSN
    Satoshi_Matrix

    Default

    Quote Originally Posted by treismac View Post
    Did this fellow mod your AV Famicom? Also, do you have an article on your blog or a video on your youtube channel showcasing this modded AV Famicom that you have?
    No and no. my RGB AV Famicom is currently in Chile in the care of a friend of mine at least until the end of the year. When I get it back I'll be sure to make a few posts about it.
    check out my classic gaming review site: http://satoshimatrix.wordpress.com/

  6. #6
    Pac-Man (Level 10) treismac's Avatar
    Join Date
    Mar 2011
    Location
    Savannah, GA
    Posts
    2,025
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by Satoshi_Matrix View Post
    No and no. my RGB AV Famicom is currently in Chile in the care of a friend of mine at least until the end of the year. When I get it back I'll be sure to make a few posts about it.
    I hope that he or she is a good friend.

Similar Threads

  1. NES Toploader audio "buzzing" when turned on
    By treismac in forum Technical and Restoration Society
    Replies: 15
    Last Post: 02-06-2014, 11:56 PM
  2. case swap between av famicom and toploader?
    By sharc in forum Technical and Restoration Society
    Replies: 7
    Last Post: 06-30-2007, 05:38 AM
  3. FS: Sachen Famicom, multicarts,Toploader, R.O.B. and others
    By Canadianzombie in forum Buying and Selling
    Replies: 2
    Last Post: 05-22-2005, 06:19 AM
  4. FA: Famicom Toploader + Dogbone
    By i.spotdeals in forum Buying and Selling
    Replies: 5
    Last Post: 03-23-2005, 08:42 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •