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  • AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…

    ... ]

    I took the noise generator from FUSE.

    AY says they are equivalent.

    I also tried the noise ...
    Oibaf Oibaf June 2012 Emulators
  • AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…

    ... the AY 8910.

    The frequency of the AY is ... typically half the frequency of the ... 3.5Mhz Z80 / 1.75Mhz AY

    TS2068: ... 3.528Mhz Z80 / 1.764Mhz AY

    128: ... 3.5469Mhz Z80 / 1.77345Mhz AY

    I ...
    chev chev June 2012 Emulators
  • i am currently listening to........as i couldnt seem to find the old one, i didnt look that hard :P ive started a new one right after somebody asked me for some slayer ive rediscovere…

    visage frequency 7 (played at 33 rpm) - ... /> glamerous hooligan - needle 23
    noise unit - a place to lay ...
    mel the bell mel the bell July 2012 Chit chat
  • Tapes and SimcoupeNo idea where to post this. :-? , as it is and it isn't, well sort of. :oops: Can't seem to get tapes to load into SimCoupe, despite my best efforts…

    ... ]Wondering what Sam tape loading noise sounds like. :)[/QUOTE]
    Standard ... tone is also twice the frequency, which allows the ROM to ...
    obo obo July 2012 Chit chat
  • 128k ULA pinout?Is there someone who has a circuit diagram or pinout for the 128k (+2) ULA?

    ... .0938MHz. 456 clocks at this frequency gives us a scanline lasting ... by 10 stage gives the AY-3-8912 clock (pin 3 ...
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • Do you like... silence?Well... :wink:

    ... actual cause of the percieved noise can be quite varied. There ... hearing damage to that particular frequency band, ever since it started ...
    Winston Winston August 2012 Chit chat
  • Getting an 14Mhz crystal to oscillate?I am building a circuit with an 74LS32 and a 74LS193 to work as frequency divider. Though I have hit a snag, how to I wire up a crystal to make it os…

    ... [/url]

    The higher frequency you start with the more ... stable oscillator. Remember that the AY itself is going to divide ...
    guesser guesser August 2012 Hardware
  • Successfully updated Issue 2 48k to 128k?Thanks to the donation by PMSR and through the very patient teachings of Velesoft, I have updated the Issue 2 to work with 128k. However. I have yet …

    ... with divider for frequency to get 1.75Mhz clocking AY :)

    Johan1973 Johan1973 August 2012 Hardware
  • Games that could be better off with a 7MHz CPUI've just reviewed Kung Fu Master for the Spectrum, as I remember it as a very poor conversion from the arcade. Then it just ocurred to me to raise t…

    ... giveaway is if interrupt-driven AY music still sounds normal at ... two bits for increasing the frequency of the CPU interrupt generated ...
    JeffBraine JeffBraine September 2012 Games
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... to work with as little "noise" as possible (don't want ... 65536 counts. With an initial frequency of 50MHz, the output signal ... has a frequency of 50000000/65536 = 763Hz . Low ... for CCLK. Even at this frequency, the FPGA is configured and ...
    mcleod_ideafix mcleod_ideafix September 2012 Hardware
  • Edge connector breakout board/level translator boardFor a new project I'm thinking of working on (gah, too many projects...) I'm going to be making a new edge connector breakout board. Basically what …

    ... poor high frequency characteristics that they have. Also how much noise you ...
    1024MAK 1024MAK October 2012 Hardware
  • Strange failure modeI just had a 48K machine "fail" in what seemed like an odd way. Problem: Random keypresses (not from any particular part of the key matrix) appearin…

    ... that serve to filter high-frequency noise leaking back into AC lines ... 's a compromise: much more noise radiating from equipment using AC ...
    RetroTechie RetroTechie November 2012 Hardware
  • Retro GamerDoes anybody know when the next issue of Retro Gamer will be out? They told me to include an article about the Spectrum30 show in the News section an…

    ... /> For a while the only noise was the sound of hooves ... sprites[/I]"

    "[I]Ay, I know of them[/I ...
    ewgf ewgf November 2012 Sinclair Miscellaneous
  • Retro GamerDoes anybody know when the next issue of Retro Gamer will be out? They told me to include an article about the Spectrum30 show in the News section an…

    ... /> For a while the only noise was the sound of hooves ... sprites[/I]"

    "[I]Ay, I know of them[/I ...
    R-Tape R-Tape November 2012 Sinclair Miscellaneous
  • Retro GamerDoes anybody know when the next issue of Retro Gamer will be out? They told me to include an article about the Spectrum30 show in the News section an…

    ... /> For a while the only noise was the sound of hooves ... sprites[/I]"

    "[I]Ay, I know of them[/I ...
    polomint polomint November 2012 Sinclair Miscellaneous
  • Retro GamerDoes anybody know when the next issue of Retro Gamer will be out? They told me to include an article about the Spectrum30 show in the News section an…

    ... /> For a while the only noise was the sound of hooves ... sprites[/I]"

    "[I]Ay, I know of them[/I ...
    redballoon redballoon November 2012 Sinclair Miscellaneous
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... working fine, or there are noise on the address bus or ... raster, or even a complete AY-3-8912 chip on FPGA ...
    mcleod_ideafix mcleod_ideafix November 2012 Hardware
  • AY-3-8912 emulationI am trying to improve the emulation of the AY-3-8912 in FBZX wii. I studied the code of some emulators and read some documents. I would like to be…

    ... does this mean that MAME AY is the only correct implementation ... posted. This includes Bulba's AY player and IMO most russian ... seems that the high freq noise doesn't sound any different ... , while the low freq noise sounds a bit more rough ...
    Patrik Rak Patrik Rak November 2012 Emulators
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... other is a GUI for AY.

    I'm not ... sure how MIDI works for AY so if anyone can tell ... hasn't the ADSR,shape, noise and volume controls of aydemo3 ...
    DaRkHoRaCe DaRkHoRaCe November 2012 Development
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... hasn't the ADSR,shape, noise and volume controls of aydemo3 ... sample demo programs from the AY library I wrote in [url ...
    Timmy Timmy November 2012 Development
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... sample demo programs from the AY library I wrote in ...

    Turn on noise on channel:

    ... Graphic= Noise Channel 1
    Edit= Noise on Channel 2 ... />
    True video = decrease noise period
    Inv Video = increase ...
    DaRkHoRaCe DaRkHoRaCe November 2012 Development
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... =DaRkHoRaCe;666053]Timmy, remember that ay has 3 channels ( left , right ... count the noise and envelope, because you can write AY to play ... theme.

    Any stereo AY is a modification of the ...
    FrankT FrankT November 2012 Development
  • Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…

    ... count the noise and envelope, because you can write AY to play ... theme.

    Any stereo AY is a modification of the ...
    DaRkHoRaCe DaRkHoRaCe November 2012 Development
  • Simple AY library in z88dk/CI was interested to see if I could make the 128k AY chip work, and as there wasn't any library on it, I just made one for fun. It's certainly not th…

    ... /> [/code]

    to disable noise on all channels and leave ... the changes here:

    ay.c is pretty much as ... %2Fay.c[/url]

    ay.h has the prototypes and ...
    Winston Winston December 2012 Development
  • Zero 0.5 ReleasedAfter a bit of a hiatus, the next update of Zero is now available [URL="www.ramtop.wordpress.com"]here[/URL]. Feedback and bug-reports appreciated! …

    ... getting a lot of random noise when hitting reset or changing ... the 48k model or the AY enabled models? Also, have you ...
    Arjun Arjun January 2013 Emulators
  • +3 Stereo mod - soldering help neededI bought a few bits from Ben just recently, and yesterday I opened up the case of my +3 and tried to install the stereo mod. I got stuck quite early…

    ... a bodge anyway, as the AY wasn't designed for stereo ... , B, C pattern using the noise channel afterwards. So you should ... hear noise on channel A then B ...
    FrankT FrankT February 2013 Hardware
  • annoying vibrationsabout a month ago I noticed this weird vibration/very low frequency noise which went on about an hour in my house, couldn't figure out the source but…

    ... this weird vibration/very low frequency noise which went on about an ...
    Scottie_uk Scottie_uk February 2013 Chit chat
  • Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…

    ... much depending on the base-frequency of the pulses, but on ... source.
    Some of the noise may reach the LM1889 over ...
    roko roko March 2013 Hardware
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