Worklog PS2 Trimming Initiative

Discussion in 'Sony' started by Gman, Feb 21, 2017.

  1. Gman RTFDS Staff Member . . . . .

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    Yeah unfortunately I have like 16 wires to solder to the traces for video. And I haven't even touched rewiring peripherals. The ps2 traces are much more difficult to solder to than the Wii in my opinion. Just those two traces for the pullup resisters took me a while. I have ordered some 38gauge magnet wire in hopes that it will make it easier.
     
  2. cheese the tallest memer in town Staff Member . . .

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    Since the cpu and GPU (I think that's what those are) are bga chips, they are extremely difficult to remove and resolder correctly (similar to the wii). However it appears most of the needed components could all be housed on one board that is connected to the trimmed motherboard, to make wiring and layout simpler

    Props either way, this is great for portablizing since it opens the door for the Sony crowd to be like the Wii kids :P
     
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  3. Ampz .

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    The dream is soon going to become a reality.
     
  4. Lightning .

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    @Gman
    Good call, the Undiluted Platinum used some pretty freakishly thin wire as well

    @cheese you can actually reball yourself, or have BGA chips reballed professionally, I've even found a preform for the CXD2976GB, and I'm going to be doing one of the two for the CXD9731GP chips I take from network adapters
     
    Last edited: Apr 28, 2017
  5. JayCantPlay .

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  6. Gman RTFDS Staff Member . . . . .

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    PS2Boy confirmed??
    20170428_132635_zpsfolessnc.JPG
     
  7. cheese the tallest memer in town Staff Member . . .

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    lmao just because it's possible doesn't make it easy... Taking a dremel to a board is much easier and cheaper than desoldering the chips, reballing, and reworking the chips onto a new board. Much like the wii board redesign that someone is probably working on, it's going nowhere fast.
     
  8. Aurelio The Fixer ᕕ( ᐛ )ᕗ Staff Member . . . . .

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    Well... :D
     
  9. Gman RTFDS Staff Member . . . . .

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    I got a current clamp so I could finish up my research. Here are my notes:

    Input: 8.72V .7A 6.1W --76% efficiency with my PTH08080 setup..

    Regs:
    2.55V .1A .255W
    1.25V 3.1A 3.875W
    3.4V 0-.1A .34W
    1.8V 0-.1A .18W
    Total :4.65W

    take that Wii lovers!!
     
  10. Shank Certified Wiitard Staff Member . .

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    vHooOa7r.jpeg
     
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  11. Diminuendo .

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    How viable would you feel this VGA circuit is for people wanting to use their PS2 as a console connected to their TV?

    I ask because the PS2 has horrible YPbPr, but incredible RGB, so a progressive RGB option would be awesome.
     
  12. dark_samus .

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    it's literally already there on PS2 I thought? Like, the only reason Gman did what he did is because he cut the chip off.... Pretty sure, might be wrong though.
     
  13. Diminuendo .

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    an unmodified PS2 can output interlaced RGB but not progressive RGBHV.
     
  14. Gman RTFDS Staff Member . . . . .

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    It may be possible to output a progressive signal through homebrew using the GSM app although I did not have success yet in my small testing I did with that a while ago.
     
  15. Diminuendo .

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    oh so is the PS2 VGA board outputting interlaced?
     
  16. Gman RTFDS Staff Member . . . . .

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    Correct. I am using the H/V sync from the CPU which is 15kHz. Some games can be forced progressive I believe and there is possibility for success through homebrew.
     
  17. Stitches 2 and a Half Dollarydoos Staff Member . .

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    But could you fit it in an Altoids tin?
     
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  18. NimbleJack .

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    question about interlaced video, could someone buy or build your 15 khz board and then buy or build an interlaced-to-progressive adaptor to get better video signal for a regular ps2?

    a converter like this maybe?
    http://www.ambery.com/rgbcgatovgac.html
     
  19. Lightning .

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    That converter just converts component to VGA, for which there are many similar devices. Gman's video DAC takes digital RGB and converts it into VGA, the interlace vs progressive part is accomplished at a GPU level (graphic synthesiser), which is why he talked about homebrew
     
  20. Aurelio The Fixer ᕕ( ᐛ )ᕗ Staff Member . . . . .

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    That device can also deinterlace 15kHz RGB signal and it can definitely be used with this, but it's not ideal and it's quite bulky.
     

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