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About StinkerB06

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    Space Invader

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    California, U.S.
  • Interests
    Soundchips and SidWizPlus/OVGen

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  1. Is the 3DS really powerful enough to emulate the Atari Lynx? Imagine trying to downclock your single-core ARM11 smartphone to 268MHz and putting the aLynx emulator (or something similar) on it, hence the original 3DS' spec. If it doesn't work well, maybe make it New3DS-exclusive with the triple-core 804MHz design? And the Nintendo Switch console is more powerful than the New3DS handheld.
  2. I've been REALLY curious about the tap locations for each of the polynomial counters. I already know these for the 5-bit poly counter, which are bits 3 and 5 If anyone knows what these polynomial tap locations are, let me know please.
  3. Oh under view you hit display after closing the undocked window
  4. The TIA chip has 4-bit adaptive-differential registers for oddball horizontal movement of the sprites, missiles, and ball. That means you can only move to the right up to 8 pixel clocks, or to the left up to 7 pixel clocks.
  5. In games, there is a 6-digit number at the top or bottom of the screen, indicating the player score or anything else 6-digit-related. How does the TIA draw that score counter?
  6. I did unzip the file. Well, as of whatever I'm doing, I'm using an extension to Mednafen called Mednaffe, which is just a GUI wrapper for Mednafen. I tried to run it here on Windows.
  7. What does the PCB on the GB Hunter look like?? I'm afraid to watch any video of the GB Hunter nor listening to its horrible theme song. An MP3 of the song would be nice! Hope no heart attacks will happen in my far future from listening to it. There's at least one video on YouTube that I remember had its theme song at the highest quality I've since heard it. Just a freakin' wierd sine/square wave melody, a bassline of a triangle wave, and some freakin' terrible percussion. EMS really should learn how the sound chip of the Game Boy works and replace the theme song.
  8. What do I have to do with those files? I don't get it. Can you provide me with a program that has an onscreen visual of every register, so that we can understand sound more better?
  9. According to Part 14 of the Atari Lynx Programming Tutorial, it says that Bit 3 in a "Static and dynamic control" register enables its timer. As for audio timers, does clearing it make the channel stay active forever, or does it shut itself off? I notice that Lynx Chipper cuts off the note after 2 seconds of playback, so it probably means the counter is on the max value and "Reload" (Bit 4) is disabled. I know that an IRQ is generated when the value is reloaded, does it reset LFSR sound phase?? Does this also affect "Integrate" (Bit 5) mode? Also, what does "Reset timer done" (Bit 6) do? Does it generate IRQ when it's changed to something different than last write? Is "Enable interrupt" (Bit 7) persistent on audio? It is used as LFSR feedback bit 7, but in Chipper its checkbox is grayed out. Probably means feedback bit 7 can't be used while counting.
  10. The lynx did not produce FM synthesis. (BTW: Where are you learning this from?) It has a form of a linear feedback shift register (or LFSR) random number generator that has a length of 12 bits. Bits 0-5, 7, 10, and 11 can be feedback taps. Each bit also has an output gate to XOR feedback. It was time-consuming for composers to get a decent waveform out of the LFSR synthesizer, so they just kept one feedback bit enabled, in which generates what is called "pure square waves". That's why most games tend to sound like a "Master System" at times. The chip also had a mode for "integrated" output, which is just a form of random DPCM instead of raw noise. This just changed the amplitude of the DAC up or down over time. This would've been easier for "flute-like" sounds of those composers, as they can possibly simulate a triangle wave. The DACs also had a register for streaming 8-bit PCM audio. Klax and Qix are currently the only games I know that used PCM music. Also, "32" means the multiplication of 4 channels x 8 bits/channel. It's like Wikipedia says that the DAC is 32-bit but it's just the sum of four 8-bit DACs. I think for what you said is that the Lynx had two processors, the Mikey and the Suzy.
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