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retro_fan

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Posts posted by retro_fan

  1. Posted

    On 10/1/2018 at 5:20 AM, trevorjay said:

    Realized I never linked to this behind the scenes post. We're working on something larger as an introduction to coding for the SM510.

    What an amazing idea -- to create an actual G&W game! Congrats! Are you still planning to release some coding intro in the future? It's a pity that your website has changed and the old links no longer work... (though one can try to search in the Internet Archive) :(

     

    And BTW, have you seen this Game & Watch "simulation" inspired by hit indie game Cuphead? -- https://dedjo0.itch.io/cuphead-game-and-watch-edition Also would've been nice in some "hardware" form...

     

    Check out as well: KB1013VK1-2 Debugger for Soviet Nintendo Game & Watch clones (Электроника ИМ) -- http://www.ebastlirna.cz/modules.php?name=Forums&file=viewtopic&p=1130447#1130447

    • Like 1

  5. Posted

    The YM2413 has been decapped, but it was discovered that its built-in instrument parameters are not contained in an ordinary ROM table which would be visible as a transistor array to an electron microscope. Instead, instrument values are defined by regions of P-doped and N-doped silicon, which are the building blocks of transistors. As these areas cannot be determined visually, this has proved a rather effective deterrent to 100% compatible reverse engineering.

     

    This is very interesting. Have you still got the source for this information? I would love to read more.

  8. Posted · Edited by retro_fan

    Excited about all the fixes on this new firmware. Can't wait until our Mysterious BenefactorTM releases the update to the jail-broken firmware. :D

     

    You're absolutely wrong! There's no Mysterious Benefactor, it's all thanks to the Firmware Fairy! :D Just put your Super Nt with the stock firmware under your pillow, and you will see... ;)

    • Like 2

  11. Posted

     

    When I get mine, I'll probably make an effort to compare the SNES and the Super NT, but I'll probably have to move the surround sound box to the PC to do it, as it's currently setup around the CRT.

     

     

    I imagine the sample conversion wouldn't matter much. [...]

     

    It looks like someone has already done some testing with SNES surround sound games and the Super Nt: "I'm running the Super NT into a Denon AVR-S930H via HDMI, which detected and decoded the Dolby Surround from Fatal Fury Special. I can't even describe how weird and cool it is to hear SNES games in actual surround. It's bananas. Highly recommended."

    • Like 1

  13. Posted

    One feature that i would like to see added (if possible) is a way to save different video configurations and, ideally, give them custom names. There are so many different settings to adjust and it would be nice to be able to have quick access to different combinations of settings without having to spend time going through the multitude of options in the settings. I'd love to be able to easiy switch from having an old-school CRT-like experience on the big screen (artificial scan lines with the dimensions that MLiG showed that were based on the height and width of a PVM) vs my usual preference of 5x height and 6x width with no scan lines.

     

    Talking about an old-school CRT-like experience, I have already mentioned that UltraHDMI (also FPGA-based) has something called "Retro Mode", you can see how this looks on this page.

  16. Posted

    Does the SNT read extFat? normal fat? What is the biggest card it can read?

     

    Kevtris said: "The problem is exfat is under heavy patent protection, and you have to pay a microsoft tax to use it. Not to mention, the spec isn't even available unless you pay MS a lot of money. So I don't think that is going to happen any time soon. This is why lots of things only support FAT32. My dashcam is a good example. It will format SD cards up to 64 gigs in size with FAT32 for use with the camera since windows was artificially restricted to format only a maximum of 32 gigs as FAT32 and anything larger must be exfat. This is an artificial limitation designed to make MS money via licensing fees. As far as I know, exfat hasn't been fully reverse engineered yet. The patents for FAT32 and long file names ran out, so microsoft decided to create another patent encumbered format to keep the gravytrain rolling in."

    • Like 1

  18. Posted · Edited by retro_fan

    [Kismet said referring to SNES games with surround support] Because when you have a HDMI output the TV sends the audio to either it's internal audio DSP/DAC's or it may be configured in software to output through HDMI or S/PDIF. Since the SNES is 32Khz, that gives us a similar problem with the 4.5 scale at 1080p, where the target audio device might support 32khz, or might only accept 44.1khz, 48khz or 96khz. I would love to see the option of changing the output rate just like resolution, but that might screw up things that assume 32khz like white noise generation, and the few games that actually have matrix Dolby Prologic surround getting thrown out of phase.

     

    [Kosmic's reply] 32kHz should scale quite nicely to 48kHz with minimal loss of quality using a simple 2:3 bilinear algorthm. Latency of such a custom algorithm could be as small as 3 48khz samples or 1/16000 sec. A menu option to "force" native 32kHz for receivers that support it, or resample to 48kHz by default.

     

     

    Has anyone actually tested on the Super Nt SNES games with surround sound support using the proper equipment?

     

    Here you can learn more about retro games with surround sound:

     

    Throwback Thursday: Top 5 Uses of Surround Sound on SNES

     

    List of games Pre 6th Generation with Surround Sound

  20. Posted

    Apparently some early hdmi crt's (yeah I didn't know those existed) might've had bad EDID information or something that prevents them working right. Since it's impractical for me to test one of these, I cannot fix it. If someone sends me an EDID dump, I will give it a look to see if I can figure anything out.

     

    What about my idea to implement a hotkey (the combination of buttons on the controller, or on the Super Nt itself) to change the video mode without using the menu? So that people with these early HD CRTs (and maybe for other emergency situations) would not have to look for a newer TV just to change settings each time a new firmware is released?

     

    And could you answer my question here, please, I would really love to know that. :)

  21. Posted · Edited by retro_fan

    If OG clocks are that important to you why not just use an OG SNES?

    I have just said in the very post you're quoting that "it's fine", and that "we have quite a few other settings to choose from". Now I just want to learn more about how the Super Nt works (that's why I'm asking this question).

  22. Posted

    no, the video is all generated internally to the FPGA. There's several PLLs on the FPGA itself, and I am using those to generate the various clocks. There's around 22 clock domains on the design as it stands. The problem is I would need some non-integer N/M ratio to get the right clock for the HDMI stuff from the 21.47Mhz domain. Right now video gets a clock that varies depending on video mode. i.e. it's 148.5Mhz in 1080p mode. There's no easy way to lock the two PLLs together (the one generating 21.47Mhz and the 148.5Mhz one) in the proper ratio to offer 60.09 hdmi.

     

    The video always runs at 60.00 fps and it will cause cycle stealing on the snes side to make it stay in synch with the hdmi for the zero delay mode. If you run full/single buffered, the cycle stealing is turned off and is allowed to free run.

     

    Well, if it's really not possible to have the "original clock" option then fine, we've already got quite a few settings... But I want to ask (I would like to learn more :) ), you can't implement it because (not taking into account the monitor compatibility issues)?...

     

    a) You would have to completely change you're FPGA design for this to work

     

    b) You would need a completely different FPGA chip to generate this clock

     

    c) You would need some external component outside the FPGA for this

     

    d) It is just too much work to get it right

  23. Posted · Edited by retro_fan

    I hope the Super NT does not output 1080p by default. My 2006 Sanyo is 720p/1080i only. The 720p Mini consoles and AVS work flawlessly with it, but if any devices are locked to 1080p in their default setting, it will run into problems on my set. I also have a 1080p gaming monitor in my bedroom so I could manually reconfigure settings on that if necessary.

     

    Yup, I have noticed that people are having issues with this. That's why I have asked first whether there are some technical difficulties when it comes to implementing 1080i, and then whether there are more hotkeys hoping that you can change the resolution to 720p using a hotkey maybe...

     

    EDIT: Or holding down the reset button on the console, or something...

  25. Posted · Edited by retro_fan

    They would have to have a way to go back if you accidentally chose this and didn't have a compatible monitor. Even making you confirm the choice could end up bad if you confirmed the choice while your monitor was black/off. I could see this maybe being in a jailbreak but I am not so sure Analogue would want that in an official product.

     

    Yup, this is exactly what I suggested some time ago here -- put the "original clock speed" feature into the jailbreak, with warnings and instructions on how to restore the previous settings.

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