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<1234567…34>
  • Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…

    ... sprite into background
    3. Delay loop
    4. Draw stored background ... point number 1
    My delay loop is just decreasing register
    Ralf Ralf October 2004 Development
  • Invalid combination of operands and opcodesIt says the error in the title, why is this?? [CODE] ORG 0000 LD HL, 63000 ;LOAD HL WITH STACK LOCATION LD SP, HL ;SET STACK POINTER TO HL LD A, …

    ... MAX VALUE
    BIOS_DELAY_LOOP ;BIG DELAY LOOP TO SHOW SPLASH SCREEN
    JP MENU_KEYSCAN ;MENU LOOP
    ;END OF MENU LOOP
    ;===============================================================================================

    Robin Robin December 2011 Sinclair Miscellaneous
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... 8 lines.
    5. 96T delay, loop back to 2 192 times ... of relationship between the initial delay and which columns are un ...
    Hikaru Hikaru January 2014 Development
  • Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …

    ... , to cater for a bigger delay loop.

    Cheers.

    FrankT FrankT February 2017 Assembler
  • Setting breakpoints in source code to make debugging easierAfter two years I've resumed my Speccy coding project. I'm porting a yet "unported" game from C64/Atari to 48k Spectrum using Z80 assembler. At the m…

    ... :
    - having a very long delay loop in the code in the ...
    arttu arttu August 2019 Development
  • Wanted: Code to wait until Border has been drawnWhen my IM2 interrupt fires, I want to wait until the ULA is past the first line of display before drawing. I know I need to wait about 14300T after…

    ... with just sitting in a delay loop until 14336 (adjust according to ... (adjust according to machine) tstate delay loop and seeing if you get ...
    Philip Kendall Philip Kendall September 2004 Development
  • Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…

    ... sprite into background
    3. Delay loop
    4. Draw stored background ...
    Alcoholics Anonymous Alcoholics Anonymous October 2004 Development
  • Games that cannot be completed due to bugs - the definitive listIt would be nice if the community of WoS compiled a list of all the games that are known to be impossible to complete due to bugs. Perhaps one day, a…

    ... 1/256 by POKing its delay loop); note that there is an ...
    robert@fm robert@fm March 2005 Games
  • ZX Spectrum BogoMipsBogoMips value gives some indication of the processor speed, and is one of the most used way of comparing diferent systems. The definition of BogoMi…

    ... of times per second a delay loop runs.
    For instance if ...
    cascarria cascarria September 2005 Development
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... there is usually a short delay loop before the edge detection routine ... it was before because the delay loop gets emulated normally.

    Laser Laser August 2006 Emulators
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... screen mode without a massive delay loop that would suck the life ...
    Alcoholics Anonymous Alcoholics Anonymous December 2006 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... and removing the "FOR d" delay loop.

    (c) Save 18 ...
    Digital Prawn Digital Prawn October 2007 Development
  • MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]

    ... thus we need to change delay loop.

    Looking at flickr ... be possible only to change delay constants and it will work ...
    omega omega October 2007 Hardware
  • MULTITECH pictures[url]http://velesoft.speccy.cz/data-gear.htm[/url]

    ... thus we need to change delay loop.
    [/quote]

    The ...
    Woody Woody October 2007 Hardware
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... instructions in the main game loop to slow it down!
    delay loop.

    My high score ... />
    ; Jump back into main loop
    JMP NO_HITOBJECT

    Digital Prawn Digital Prawn August 2008 Sinclair Miscellaneous
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... :D

    Shorter delay loop when worm is turning, to ... then jump to longer DELAY_NOTURN loop
    ; else execute ... />
    ; End of main loop

    HITOBJECT
    ...
    ; Jump back into main loop
    JMP NO_HITOBJECT

    Digital Prawn Digital Prawn September 2008 Sinclair Miscellaneous
  • Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…

    ...

    push bc ; temporary delay loop
    ld bc, $1000
    delay: dec bc
    cp b< ... br /> jr nz, delay
    pop bc ; end delay loop

    ld ...
    FrankT FrankT October 2008 Sinclair Miscellaneous
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... when I'm using the delay loop to copy data to the ...
    joefish joefish March 2009 Development
  • Ocean's Cobra - +3 incompatability. Is their a fix?Hello all, Anyone know of a fix for Ocean software 'Cobra' (the one with stallone in it) ? This was the first game I bought for my 128k toastrack, a…

    ... probably just had a big delay loop added to the main ...
    frobush frobush June 2009 Games
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... it was, with a big delay loop, for the +2 et al ...
    frobush frobush August 2009 Development
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... it was, with a big delay loop, for the +2 et al ...
    Madonna Mk 2 Madonna Mk 2 August 2009 Development
  • New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…

    ... see you have a small delay loop there.

    all together ...
    Fikee Fikee August 2009 Development
  • The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…

    ... install after reset. Add wait loop from adress 1 on divide ... 're absolutely right! Adding a delay loop has fixed it. What the ...
    gasman gasman September 2009 Development
  • The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…

    ... absolutely right! Adding a delay loop has fixed it. What ... from adress 0 wait loop and continue after last ...
    This is wait loop from original ZX128 rom, you ... br /> #0004 DEC BC ;Delay about 0.2s
    # ... br /> ABC DEC BC ;Delay
    IN A,(#A3)
    velesoft velesoft September 2009 Development
  • The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…

    ... 're absolutely right! Adding a delay loop has fixed it. What the ...
    Winston Winston September 2009 Development
  • Framerate of arcade gamesThe Golden Age of video games coincided with the birth of 8-bit home computing; this is why every computer of that era has a slew of really bad Pacma…

    ... command. This normally involves a delay loop: loading BC with a pre ... to complete the entire game loop in just 20ms, you can ...
    ajmoss ajmoss November 2009 Games
  • Framerate of arcade gamesThe Golden Age of video games coincided with the birth of 8-bit home computing; this is why every computer of that era has a slew of really bad Pacma…

    ... command. This normally involves a delay loop: loading BC with a pre ... to complete the entire game loop in just 20ms, you can ...
    Fikee Fikee November 2009 Games
  • Framerate of arcade gamesThe Golden Age of video games coincided with the birth of 8-bit home computing; this is why every computer of that era has a slew of really bad Pacma…

    ... command. This normally involves a delay loop: loading BC with a pre ... to complete the entire game loop in just 20ms, you can ...
    jonathan jonathan November 2009 Games
<1234567…34>

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