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  • "Sinclair Zx Spectrum: Absolutely Better Than Commodore 64"Did you ever read this? [url="http://www.alfonsomartone.itb.it/fztsmo.html"]http://www.alfonsomartone.itb.it/fztsmo.html[/url]

    ... 7 cycles, and thats an interrupt or BRK.
    [quote]
    devnull devnull July 2005 Games
  • Key press to ASCII valueI need a bit of code that will give me an ASCII value when the key is pressed. I only really need a-z. I tried using the following code but it only s…

    ... GetKey is part of an interrupt service routine
    ; then time ...
    Alcoholics Anonymous Alcoholics Anonymous July 2005 Development
  • Elite developing an Elite clone (for Mobile)always joked about Elite company and Elite game.. [url="http://www.elite-systems.co.uk/elite/htdocs/subsites/StarWarriors/availability.htm"]http://w…

    ... -90s?) but they soon started shrinking.

    My parents were ...
    udgoverload udgoverload July 2005 Sinclair Miscellaneous
  • New horizontal scrolling gameI have just been working on this for the last months. Heres a snapshot, let me know what you think. [url="http://www.geocities.com/ruijtunest/rtun…

    ... screen update routine, in an interrupt routine if need be. The ...
    gasman gasman August 2005 Development
  • FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…

    Derek,
    You couldn't be nice and post a snippet with initialisation code for the interrupt? :)
    I always find IRQ-initialisation to be a pain in the *** and loose my patience :)
    (Am I lazy? Yes.)

    :)
    /Mattias
    maten149 maten149 August 2005 Development
  • FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…

    ... is the address of your interrupt handler routine):


    baze baze August 2005 Development
  • .AY - how to create themI wonder - how would I go about creating an .AY file (music) from a game? I understand that once I have all the necessary pieces (the player, the mus…

    ... are not simply, it uses interrupt routines too
    3)as ...
    Fikee Fikee August 2005 Sinclair Miscellaneous
  • .AY - how to create themI wonder - how would I go about creating an .AY file (music) from a game? I understand that once I have all the necessary pieces (the player, the mus…

    ... are not simply, it uses interrupt routines too
    3)as ...
    pepak pepak August 2005 Sinclair Miscellaneous
  • wouldnt it be good if:I know that some guy basicly said he waqs going to do what Im suggesting here but anyway: I was thinking and worring about the future of the spectrum…

    ... search, block memory allocator, im2 interrupt lib, doubly linked list data ...
    Alcoholics Anonymous Alcoholics Anonymous August 2005 Sinclair Miscellaneous
  • Waiting for retraceHi. Is there any code available that performs a simple wait for the screen retrace thats callable from C? Thanks.

    ... />
    // This waits for next interrupt.

    #asm
    halt ...
    na_th_an na_th_an September 2005 Development
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... the music updated" in the interrupt service routine, and it works ...
    na_th_an na_th_an September 2005 Development
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... with, making sure that the interrupt code (and any music player ... are paged in when the interrupt routine runs.

    All ... the music updated" in the interrupt service routine ... In moggy, I ... been using Soundtracker in an interrupt as well, and I've ...
    Alcoholics Anonymous Alcoholics Anonymous September 2005 Development
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... set registers in the next interrupt. Same thing with sprite data ...
    Alcoholics Anonymous Alcoholics Anonymous October 2005 Development
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... that is executed during the interrupt. With code guaranteed to run ...
    Alcoholics Anonymous Alcoholics Anonymous October 2005 Development
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... set registers in the next interrupt. Same thing with sprite data ...
    Fikee Fikee October 2005 Development
  • Emulating the SamRAM on the ZX Spectrum SEGerton Lunter gave me permission to reuse the code, but so far I have not been able to get the software to work in paged RAM banks.

    ... accumulator was changed in the interrupt. Then some paging tests were ...
    icabod icabod October 2005 Emulators
  • Ninja ?bug?Doing rzx of ?Ninja? but can?t finish it because to open the last secret room you need [B]six[/B] idols to be collected. They are scattered in the …

    ... to be overwritten whenever an interrupt occurs. This could actually be ...
    Mr. Anonymous Mr. Anonymous November 2005 Games
  • WarningWarning Some games such as "Cyclone" WILL NOT run on a +2A. I have tried numerous times, and every time the load fucks up resulting in a 48K BASIC …

    ... is because the game uses Interrupt Mode 2 to utilise custom ... $FFFF is used for the Interrupt routine where a negative relative ...
    Geoff Geoff November 2005 Games
  • Speccy + issues?There was a topic somewhere regarding the different issues of the Spectrum keyboard and how it had some subtle effects on programs. Just wondering …

    ... 't think it is an Interrupt Mode 2 problem as it ...
    Geoff Geoff November 2005 Hardware
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... 's /RESET line) "resets the interrupt enable flip-flop, clears the ... and R and sets the interrupt status to mode 0." Of ...
    Philip Kendall Philip Kendall November 2005 Sinclair Basic
  • New ZX Adventure Club Game - First Half of NovemberAnd starting today it's: Just in time for Hallowe'en :) [url="http://www.worldofspectrum.org/infoseek.cgi?regexp=^Scapeghost$&pub=^Level+9+Computin…

    I've been busy, so I played it just once. A kind ghost was introducing me to the neighborhood when I had to interrupt.

    I'll have another go today or tomorrow.
    WhenIWasCruel WhenIWasCruel November 2005 Games
  • Z80 cycle contentionHi, Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle? I mean which Z80 clock cycle, T1 or T2? Thanks..

    ... 14336 T-states from the interrupt pulse the first byte is ...
    Mp Mp November 2005 Hardware
  • Z80 cycle contentionHi, Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle? I mean which Z80 clock cycle, T1 or T2? Thanks..

    ... 14336 T-states from the interrupt pulse the first byte is ...
    icabod icabod November 2005 Hardware
  • Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…

    Sorry to interrupt this conversation, but Mike, can you please check your chuntey.com email.

    Cheers,

    Daren
    Daren Daren November 2005 Emulators
  • JIL - chuckie eggso far ive got to level 91 and have all the snapshots.......doesnt look like theres an end to this game it just seems to repeat after about level 30 …

    ... , no snaps saving, no any interrupt - just like reall Speccy) !!
    Alex_Lux Alex_Lux November 2005 Sinclair Miscellaneous
  • JIL - chuckie eggso far ive got to level 91 and have all the snapshots.......doesnt look like theres an end to this game it just seems to repeat after about level 30 …

    ... , no snaps saving, no any interrupt - just like reall Speccy) !!
    Daren Daren November 2005 Sinclair Miscellaneous
  • JIL - chuckie eggso far ive got to level 91 and have all the snapshots.......doesnt look like theres an end to this game it just seems to repeat after about level 30 …

    ... , no snaps saving, no any interrupt - just like reall Speccy) !!
    Frankie Frankie November 2005 Sinclair Miscellaneous
  • length of 48k .sna fileJust a quickie :) Is the length of a 48k .sna 49152 or 49153, i.e. does it go from 0 to 49152, or from 1 to 49152? (If that makes any sense?) Cheer…

    ... ,IX
    19 - 01 byte Interrupt (bit 2 contains IFF2, 1 ...
    rich_chandler rich_chandler November 2005 Development
  • what does the instruction im do?me again with more questions sorry :D finally got myself a book on machine code from ebay. whilst reading it it listed the command im with the warn…

    ... '.

    It changes the Interrupt mode of the Z80 between ...
    Geoff Geoff December 2005 Development
<1…12131415161718…34>

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