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  • When would you use LD A,R ?Can anyone tell me a practical use of LD A,R and LD R,A I am confused when you would need to use it? Cheers

    ... in his sound routines, modifying bit 7 in the interrupt routine, ... and checking that bit every little while in his sound ... routines so the game continues after the interrupt.[/ ... " has happened in an interrupt routine. Usually when I ...
    csmith csmith November 2009 Development
  • AY programming and notes frequencyHello everybody, I'm Targhan from the french CPC group Arkos, perhaps you've heard of us. I'm currently working on a music tool and I'd like to k…

    ... chip frequencies you found should sound[/QUOTE]

    Well it ... that the AY would be driven by the same clock as ...
    chev chev November 2009 Development
  • While we're on about graphics...I did this for ZXSpin: [img]http://sites.google.com/site/pauldunn/CRT.png[/img] Which is a 2x filter, simulating (badly) a CRTdisplay. This is the…

    ... possible to sync spectrum's interrupt to division of PC's ... we have emulator running Speccy interrupt at 60Hz, while number of ... screen refresh synced with ZX interrupt. Downside is that Speccy will ... ago. it causes problems with sound.

    Maybe it's ...
    Arda Arda November 2009 Emulators
  • Adjusting your code for screen refreshingOk, I'm aware that I should know it already after writing 5 Spectrum games in machine code but interrupts and screen refreshes were always my weaker …

    ... a little longer than the interrupt takes to go off, ... you can detect the next interrupt.

    Also, ... 50fps ;) then have your interrupt routine decrease a framecounter, setting ... sound routine so you do something useful like beeping until the interrupt ...
    csmith csmith November 2009 Development
  • Jonathan Cauldwell writes.I also found this in me old archives, which was actually written by Jonathan Cauldwell. Again, typos and editorial tags included for authenticity ;-)…

    ... being driven. Another option is to use the 3-channel AY38912 sound ... task of playing music or sound effects while the processor gets ...
    Shaun.Bebbington Shaun.Bebbington December 2009 Sinclair Miscellaneous
  • Chris Morris's new film the four lionssending up the jihadists and extreme muslims great clip :) [url]http://www.guardian.co.uk/film/video/2010/jan/21/chris-morris-four-lions-sundance[/…

    ... =http://www.maximumfun.org/]The Sound of Young America[/url]), via ... a very character and relationship driven movie. I was shocked at ...
    frobush frobush January 2010 Chit chat
  • Spectrum 128k +2 (grey version) Issue 1 Load games problemFirst off all I'm very happy to be a member of World Of Spectrum. Second of all: I have a BIG problem with my spectrum. The cassette tape recorder is…

    ... is: you have a PCI sound card, and not ISA with ... Out which is much stronger driven that the loosie PCI Coar ...
    LCD LCD February 2010 Development
  • Wish list for GTA V...Rumours abound that Rockstar are going to announce GTA V in the not too distance future, probably in time for the E3 event. So... What would you lik…

    ... .....[/QUOTE]

    It might sound a bit boring, but exploring ... fun than using an engine driven vehicle at times. I'm ...
    ewgf ewgf March 2010 Chit chat
  • Wish list for GTA V...Rumours abound that Rockstar are going to announce GTA V in the not too distance future, probably in time for the E3 event. So... What would you lik…

    [QUOTE=ewgf;429595]It might sound a bit boring, but exploring ... fun than using an engine driven vehicle at times. I'm ...
    dm_boozefreek dm_boozefreek March 2010 Chit chat
  • Game MusicI'm looking at revamping the original version of football manager - I still prefer it by far to any later ones. I've done a few snazzy bits of graph…

    ... know of any freely stealable sound/music routines that I can ... , for preference, turn into sound libraries for Boriel's ZX ... runs the im2 routine each interrupt.

    The most popular ...
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Development
  • Some Beeper TunesAfter doing a verion of [URL="http://freestuff.grok.co.uk/vbspec/popcorn.szx"]popcorn[/URL] a few weeks back, I got a bit carried away with doing a f…

    ... know. Actually Z80 as a sound generator has no limitations (except ... course. Well, it has this sound quality just because it has ... always interrupt the tone channels. So it is possible to get sound ...
    Shiru Shiru March 2010 Sinclair Miscellaneous
  • Some Beeper TunesAfter doing a verion of [URL="http://freestuff.grok.co.uk/vbspec/popcorn.szx"]popcorn[/URL] a few weeks back, I got a bit carried away with doing a f…

    ... course. Well, it has this sound quality just because it has ... always interrupt the tone channels. So it is possible to get sound ...
    Mister Beep Mister Beep March 2010 Sinclair Miscellaneous
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    ... , to the Spectrum.
    An interrupt routine reads this signal and ... Spectrum to drive an external sound card whilst echoing the MIDI ...
    bverstee bverstee March 2010 Hardware
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    ... , to the Spectrum.
    An interrupt routine reads this signal and ... then attach any MIDI compatible sound generator you like to it ...
    Spex Spex March 2010 Hardware
  • Midi out on a ZX SpectrumYears ago (may be over 15 years...) I soldered a small adapter that lets a keyboard or synthesizer connect to the ZX Spectrum 128K's midi/RS232 port.…

    ... attach any MIDI compatible sound generator you like to ... only.

    The interrupt routine sets the angle of ... presumably my hand..
    The interrupt routine saves a value specifically ... />
    This combination: an interrupt routine to set the angles ...
    bverstee bverstee March 2010 Hardware
  • Smiler 2: In the CityHi All, I've now completed my next game, "Smiler 2: In the City". It is available for download here:- [url]http://wonko.gotdns.org/sinclair/smile…

    ... is set up a trivial interrupt routine which calls the player ... -written library to manage IM2 interrupt mode when using Z88DK, so ... they already did have BEEPER sound FX. Although, after the games ...
    Digital Prawn Digital Prawn March 2010 Brand new software
  • 48k titles you wished had AY tunesFollowing the GAMES for Spectrum48+AY_interface & Paperboy remake threads, it's got me thinking about those games that were lacking either a 128k mod…

    ... another 128K page with an interrupt running it. I'm smart ... game, in game music, with sound fx would be a massive ...
    Alien 8 Alien 8 April 2010 Games
  • Beepola v1.00.00Beepola is a new multi-channel, multi-engined, tracker-style Beeper music editor for Windows (although it should also run perfectly well on Linux or …

    ... Frobush's original code. The interrupt service routine checks both the ... have room for additional sound FX like jumping sound? Or should I ... a second and play the sound instead?[/QUOTE]
    Well, I ... and restart it after your sound effect, or you could play ...
    ccowley ccowley April 2010 Announcements
  • Playing AY sounds with BASIC.Is it possible? If so how? I've seen in one forum a while back mention of using interrupts to play but AFAIK this is machine code only. The goal of …

    ... you can have only one sound effect playing at once (because ... effects has possibility of unstable sound glitches because of pause between ... 's for pitch value. If interrupt occurs between them, you'll ...
    Shiru Shiru May 2010 Sinclair Basic
  • Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …

    ... made on Orfeus.
    This sound is harder and still keeps ... uses the Speccy's 50Hz interrupt to control the tempo so ...
    ccowley ccowley May 2010 Announcements
  • ZX 48K loudspeaker with 8 Ohm possible?Is it possible to change the loudspeaker from the ZX 48K with a model which has only 8 Ohm? Micky

    ... the time. As soon as sound is produced the average current ... that is driving it. When driven by an AC waveform, the ...
    alien8r33d alien8r33d May 2010 Hardware
  • Noise channels on AY-3-8912?I'm trying to reproduce a tune that's a jazzed-up version of classical music - i.e. there are drum beats all over the place, to try and mask the low …

    ... . Other options are to just interrupt one of the least important ... the music to play an sound effect, or even use just ... HW channels - the drums could interrupt one of tone channels, as ...
    Shiru Shiru May 2010 Hardware
  • Noise channels on AY-3-8912?I'm trying to reproduce a tune that's a jazzed-up version of classical music - i.e. there are drum beats all over the place, to try and mask the low …

    ... channel is playing a drum sound, or anything with any identifiable ... games with a lot of sound FX. it just sounds unprofessional ... you can make two channels sound like three sounds (and sometimes ... one interrupt cycle - you could mix it with the tonal sound or ...
    Lee_dC Lee_dC May 2010 Hardware
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... to get different volumes for sound.
    shiru's example is ... interesting is hanging duration of sound on interrupt and playing with different ... is hard to tune multichannel sound routine, the fx are real ... discover beauty of 1-bit sound
    Fikee Fikee May 2010 Development
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... to get different volumes for sound.
    shiru's example ... interesting is hanging duration of sound on interrupt and playing with different ... discover beauty of 1-bit sound[/QUOTE]

    Haha ... tried a lot !!! :). The sound is always always , so annoying ...
    Rosebud_ Rosebud_ May 2010 Development
  • Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…

    ... sync with, except for frame interrupt). If the player takes non ... lead to artifacts in the sound. It is difficult to make ...
    Shiru Shiru June 2010 Development
  • Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…

    ... sync with, except for frame interrupt). If the player takes non ... lead to artifacts in the sound. It is difficult to make ... for playing noises live. :) The sound changes while making experiments. ;) Almost ...
    Yerzmyey Yerzmyey June 2010 Development
  • Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…

    ... lead to artifacts in the sound.[/QUOTE]

    Are you ... the last thing in the interrupt routine, after all sorts of ... at the start of the interrupt will have some minor variation ... at the start of the interrupt, do [i]roughly[/i] half ...
    gasman gasman June 2010 Development
  • A question about M1 cyclesI'm writing an interrupt routine that, after the usual register pushes, will jump to a location of my choice with a [b]JP (IY)[/b] instruction. If I…

    ... Which may be annoying for sound uses / game responsiveness etc ... areas. Or have your interrupt routine switch banks in ... your example?).
    [*]Have interrupt routine & main program ... by block-switching interrupt routine works, and interrupt routine itself ...
    RetroTechie RetroTechie July 2010 Development
  • Games only possible in 128K mode?In the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?t=30145[/url] the discussion of 128K only games comes up, and it made me w…

    ... /> The way I tackle 48K sound these days is to set ... say I want a particular sound played. When all the other ... I'm waiting for an interrupt to keep the frame rate ... the sound then. Obviously, I keep checking to see if the interrupt ...
    jonathan jonathan July 2010 Games
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