MiSTer FPGA (computer/console/arcade hardware simulation)

Discussion in 'Retro & Arcade' started by elvis, Oct 14, 2018.

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    elvis

    elvis Old school old fool

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    Huge update - first images of PC Engine CD-ROM booting!



    Especially worth noting the video description:

    "It's been a long road to get to this point. Many weeks of long nights, figuring out how to implement the logic, based on references like the MAME source code."

    Once again reminding us of the importance of past projects like MAME, and how good quality software emulation serves as an excellent documentation resource even for hardware/FPGA projects like these.

    Amazing effort by everyone involved, and another fragile (and expensive) system on its way to better preservation.


     
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  2. Vanne

    Vanne Member

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    MC loving it!!!! :D
     
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    elvis

    elvis Old school old fool

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    I have a PC Engine and a Megadrive (both with region mod capabilities, one with a flash cart). But I missed out on CD-ROM addons for both, and prices are skyrocketing now. MiSTer getting these was something I'd hoped for, but was expecting to wait a while for.

    The fact that one of them is already getting CD-ROM support now is fantastic. Some of the behind the scenes photos of ElectronAsh's (and others) work are amazing. These guys are on another level.
     
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    elvis

    elvis Old school old fool

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    Big updates recently in the HDMI scaler for MiSTer. Bob from RetroRGB confirms that "vsync_adjust=2" output over HDMI is now "sub-1-frame lag". MiSTer dev claim it's around 4ms (1/4 of a frame).

    https://www.retrorgb.com/mister-hdmi-core-now-sub-1-frame-of-lag.html

    So if you are sensitive to lag but don't have a CRT to play on, this is a great option for retro gaming. Pair it with an accurately measured low-lag TV:
    https://www.rtings.com/tv/tests/inputs/input-lag

    Or gaming monitor:
    https://www.rtings.com/monitor/tests/inputs/input-lag

    And you're gold.
     
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  5. MUTMAN

    MUTMAN Member

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    So the RGB output is essentially zero lag ?
    Great news for the progress in general.

    I cant keep up with all the stuff going on, every weekend is a pile of updates (thank goodness for (smokemonsters?) update scripts)
     
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    elvis

    elvis Old school old fool

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    Analogue out either in original resolution or doublescanned to a CRT is zero display lag. Doesn't matter what that analogue signal is (RGB or YPbPr).

    Note that you can connect VGA out to the scaler, which then puts it back into the realm of slight lag (although with that recent update it's now negligible). "Doublescanned" is a special mode you need to put in your MiSTer.conf that simply doubles the hsync and number of lines drawn per frame/field. This technique has been around a while, and similarly on some systems you can do double the vsync to get 240p@120Hz out to a PC CRT (I've done this through a Linux PC with MAME before, and an RPi).

    If your LCD/OLED supports analogue VGA or YPbPr in, you can also use that special doublescanned mode via analogue out, although there's a few other factors there (like your panel's native upscaling ability from ~480p modes, and it's own native display lag).

    Anyways, that's all getting away from the question a bit. Analogue out, native or doublescanned, to a non-digital, non-100Hz CRT is a zero display lag solution right now.

    If you're stuck with an older TV that can't do YPbPr or RGB, there are third party options coming soon:
    https://www.retrorgb.com/koryuu-composite-s-video-to-component-converter-announced.html
     
    Last edited: Apr 20, 2019
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    elvis

    elvis Old school old fool

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  8. MUTMAN

    MUTMAN Member

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    Wow, the devs are on fire :Pirate:
     
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    elvis

    elvis Old school old fool

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    The NES core added zapper lightgun emulation via mouse input. I was hoping that would happen, as it opens up a huge array of third party light guns (like the AimTrak).

    Fingers crossed the feature makes it to other cores (because Duck Hunt is boring - sorry NES fans).
     
  10. MUTMAN

    MUTMAN Member

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    elvis

    elvis Old school old fool

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    Try out "Action Fighter" if you like that one. On MiSTer, easiest to play the Sega Master System version.
     
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  12. MUTMAN

    MUTMAN Member

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    hahaha, it goes from burnin rubber to xevious :thumbup:
    another class game i love
     
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  13. Vanne

    Vanne Member

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    Ok, I got payed yesterday. Anyone wanna go in together to save on shipping?

    :D
     
  14. Vanne

    Vanne Member

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    Ordered mine from Amazon, 15 bucks shipping. Yay!!!!

    Anyone have any clue as to which ram and other bits to buy?
     
    Last edited: Apr 26, 2019
  15. MUTMAN

    MUTMAN Member

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    misteraddons is where Elvis and I purchased
    https://misteraddons.com/
    not sure on pricing comparisons
    the ram from them tests to the max (167meg) no worries
     
  16. Vanne

    Vanne Member

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    Awesome, thanks bud, inbound :)

    Mutt, those sdram chips, what size are they from the site you linked?
    Can't find any spec on size, just speed.. egay sells 32 and 256mb sticks..
     
    Last edited: Apr 26, 2019
  17. MUTMAN

    MUTMAN Member

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  18. MUTMAN

    MUTMAN Member

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    Ohhh, just read a nice comment on the atari forums from one of the arcade devs (alanswx) that seems very active and busy on the MiSTer stuff.


    but, I'm still using nakedarthurs injected rom builder tool.
    it means updates are painful, but I can jam in the rom i want, not just the 'offical' supported one :)
     
  19. Vanne

    Vanne Member

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    Anything I've missed Mutt?

    [​IMG]
     
  20. MUTMAN

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    looking good. although you could drop the card
    the de10 comes with a card, and mister lets you load from usb or network
     

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