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<123>
  • speccy soundI know this sounds a bit vauge but can anyone explain to me why the music on some 48K games was so amazing and so much better than the usual beeper s…

    ... has something to do with interupts (whatever they are) but Im ...
    Matt Matt November 2001 Sinclair Miscellaneous
  • handbook for newbies ?looking at questions what regulary appears on this forum i have an idea. why not to write short book for newbies. if few experienced coders write eac…

    ... other one part (asm overview, interupts, screen layout, etc.) we can ...
    Fikee Fikee March 2004 Development
  • Is the IY register used by the spectrum rom?Hi I've been writing a sprite routine and have noticed that the sprite data gets corrupted at some points. I have no idea why and can only guess tha…

    ... hold a certain value if interupts are enabled, and if so ...
    dmsmith dmsmith November 2004 Development
  • ZX81 software interupts?One of the ZX81's main improvements over the ZX80 was the NMI, allowing for SLOW mode and therefore animated graphics/games. But I read SLOW mode ra…

    One of the ZX81's main improvements over the ZX80 was the NMI, allowing for SLOW mode and therefore animated graphics/games.

    But I read SLOW mode ran 1/4 of the speed of FAST mode. What I wondered is: did any of the ZX81 animated games run in ...
    MartynC MartynC November 2009 Sinclair Basic
  • Z80 Processor Interupt helpHi everyone, Currently designing a Z80 computer and i need a little help with these interupts. If i have an I/O device that sends a pulse to the int…

    ... a little help with these interupts. If i have an I ...
    Robin Robin January 2011 Hardware
  • Canny use of the 'r' register?Seeing Sokurah's code in the [URL="http://www.worldofspectrum.org/forums/showthread.php?p=583188#post583188"]crunch sound thread[/URL] has made me th…

    ... it cycles irrespective of whether interupts enabled so presumably better than ...
    R-Tape R-Tape November 2011 Development
  • [0x14],[0x0a] ect what do they relate to?Hello, I am looking at some assembly code for the spectrum 48k. I notice that lots of refrences are made to [0x15], [0x14], [0x16]., [0x07]. Are th…

    Hello,

    I am looking at some assembly code for the spectrum 48k. I notice that lots of refrences are made to [0x15], [0x14], [0x16]., [0x07].

    Are these basic tokens? or interupts?

    Cheers!
    wibble wibble August 2013 Development
  • harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…

    ... bank would be switched in. interupts would need to page this ...
    Basher Basher January 2014 Hardware
  • Double Buffer UtilityHi Folks, I've been experimenting with double buffering on a 48k Speccy for a small project I'm working on. After reading lots of good advice here…

    ...
    self.disableInterupts() #3 - Disable Interupts
    self.storeRegisters() #4 - Store ...
    self.enableInterupts() #9 - Enable interupts
    self.returnFromRoutine() #10 - Return ...
    KrazyKattapilla KrazyKattapilla August 2014 Development
  • type in to learn about IM2I'm trying to mess around with learning about IM2 and I found a nice little article in Sinclair User September 1988, issue 78, Page 70-71 [url="https…

    ... /> clock_off:
    di ;disable maskable interupts
    ld A, $3f
    andydansby andydansby July 2020 Development
  • How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…

    ... doesn't say anything about interupts other than they're deadly ...
    cyborg cyborg January 2002 Games
  • speccy soundI know this sounds a bit vauge but can anyone explain to me why the music on some 48K games was so amazing and so much better than the usual beeper s…

    Interupts are a pulse sent 50 ... this bit of code first. Interupts are popular for AY music ...
    cyborg cyborg November 2001 Sinclair Miscellaneous
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…

    ... to keep track of the interupts called during the program running ...
    cyborg cyborg October 2001 Sinclair Miscellaneous
  • Best way to codeHi, I've been using Zeus Assembler to code MC programs so far. Nothing fancy just the odd scroll left or animation stuff. Wot I'd like to know is, …

    ... do not forget to disable interupts while scrolling the screen or ... a lot of tricks.
    Interupts are used mainly for plaing ...
    LCD LCD August 2001 Sinclair Miscellaneous
  • spectrum mode smiilar to c64?i dont know much about machine code assembler routines, zilch actually to be honest, ive always fiddled with basic on my spectrum, only doing maybe a…

    ... screen can be done in interupts and it takes only a ...
    LCD LCD July 2001 Sinclair Miscellaneous
  • My own Home Computer (part 2) This one is set up because of the other one got locked... Oh, and anyone who tries to lock this one down will not get any satisfaction: i'll just s…

    ... overwritten and there are limited interupts on a Spectrum and it ...
    cyborg cyborg October 2002 Sinclair Miscellaneous
  • Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…

    ... .

    Laced screens in interupts are no problem on Spectrum ...
    LCD LCD March 2003 Sinclair Miscellaneous
  • Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…

    ... />
    [quote]Laced screens in interupts are no problem on Spectrum ...
    Amigo Amigo March 2003 Sinclair Miscellaneous
  • Most engrosing Adventure GameThis is one for all you text adventure lovers. Of which I am one. I remember reading those Fighting Fantasy books when I was a kid. The ones where y…

    ... a mod for interlacing in interupts. I hope, I can find ...
    LCD LCD April 2003 Games
  • in-game soundhas anybody an experience in writting beeper routines? i tried to code some sound fx but it sounds really horrible...

    ... it gets few tens between interupts. as code consume some time ...
    Fikee Fikee November 2003 Development
  • TimingHey All, Is their away of obtaining timing information on ZX128k other than addresses 23672->23674. Basically I would like to identify every 100th …

    Measure by interupts work only in 1/50th ... if you do not use interupts, but your own timing routine ...
    LCD LCD January 2004 Development
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... do a interlace effect in interupts myself very easy. I'm ...
    LCD LCD February 2004 Sinclair Miscellaneous
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... do a interlace effect in interupts myself very easy. I'm ...
    cyborg cyborg February 2004 Sinclair Miscellaneous
  • Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??

    ... anyway - something to do with interupts, I gather. What could have ...
    monty.mole monty.mole March 2004 Sinclair Miscellaneous
  • Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??

    ... anyway - something to do with interupts, I gather. What could have ...
    Philip Kendall Philip Kendall March 2004 Sinclair Miscellaneous
  • handbook for newbies ?looking at questions what regulary appears on this forum i have an idea. why not to write short book for newbies. if few experienced coders write eac…

    ... other one part (asm overview, interupts, screen layout, etc.) we can ...
    Alcoholics Anonymous Alcoholics Anonymous April 2004 Development
  • My first attempt at Gigascreen interlacingWonderful. Did some research on the port which controls memory paging and wrote a short BASIC programme to switch pages 5 and 7 in and out of the scr…

    ... even switch the screens in interupts (I did it too).
    LCD LCD May 2004 Development
  • VSYNC FunctionI have written a VSYNC function, so that I can clear the screen before redraw without flicker on the screen, I do this by peeking at the address 2367…

    ... crash the Spectrum, but if interupts are enabled it will work ...
    LCD LCD May 2004 Development
  • Finishing my Ragnar game...Hi all, Way back then, in my youth, I worked on a game for the Speccy called "Ragnar", which was a 3d isometric style mcoded game written from scrat…

    ... are no devices that generate interupts you have to cater to ...
    cyborg cyborg July 2004 Development
  • IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…

    ... synchonising the game to the interupts you can get a smoother ...
    cyborg cyborg July 2004 Development
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