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<1234567…34>
  • ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…

    How is this feature implemented in emulators ? And how exact is the emulation ?
    I somehow supposed that ULA snow is something that is not very deterministic in nature. But if one can emulate it (perfectly ?) then i was wrong.
    Fikee Fikee March 2012 Emulators
  • The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…

    ... no avail. I get the ULA snow, sure thing, but that’s ...
    Ast_A_Moore Ast_A_Moore February 2018 Development
  • How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…

    ... to write a simple BASIC* horizontal scrolling game[/b]

    horizontal scrolling* game.

    ... />
    *) Well, the horizontal scrolling part isn't in basic ... br /> [b]A) Drawing a scrolling screen[/b]

    ...
    Timmy Timmy September 2020 Development
  • How to write a simple C+asm horizontal scrolling game (Tutorial, z88dk)[b]How to write a simple C/asm horizontal scrolling game[/b] [b]Note:[/b] This tutorial has multiple parts... I am still writing but this first pa…

    ... write a simple C/asm horizontal scrolling game[/b]

    [b ... />
    [b]A) Drawing a scrolling screen[/b]

    We ... /> Well, this is only the scrolling part of the game. It ... using it to add out scrolling function in here, in assembly ...
    Timmy Timmy September 2020 Development
  • ula bookula book is here: [url]http://www.zxdesign.info/book/[/url] can i post sam coupe stuff here - she kind of is a speccy if you stuff the speccy rom i…

    ula book is here:

    [ ... this is not described as ula snow - the description of that is ... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ...
    Roger Jowett Roger Jowett September 2010 Hardware
  • Smooth Screen ScrollingHi Everyone, Any suggestions on what is the best way to do horizontal scrolling ie. in Zynaps fashion. I am working on a routine at the moment, whi…

    ... the best way to do horizontal scrolling ie. in Zynaps fashion.
    dmsmith dmsmith September 2004 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy.
    joefish joefish March 2011 Development
  • 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…

    ... 0x40-0x7F then the ULA gets confused by the ... memory address generated by the ULA (who wants to read ... two addresses. Therefore the ULA reads the data from an ... is actually read by the ULA is the following:
    ULA is busy drawing the border ...
    Hikaru Hikaru January 2014 Development
  • Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…

    ... .

    The problem is ULA snow. Snow appears if the I register ... I can use. But does snow happen on a 16k Speccy ... 48k machine.

    If snow _is_ a problem on 16k ...
    evilpaul evilpaul August 2017 Development
  • Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …

    ... here..

    didnt the snow effect only occur on the ... that happening on a sideways scrolling footbal game demo on a ... release. does spectaulator emulate this ULA snow effect?

    [ This Message ...
    Interceptor Interceptor August 2003 Emulators
  • Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…

    ... the screen attributes of the ULA.

    The game maps ... squares, avoiding the need for horizontal scrolling. I'm undecided as to ... to copy it while the ULA is drawing the lower border ... ) 4T instructions will take one ULA scan-line precisely. A program ...
    ajmoss ajmoss August 2010 New game ideas
  • Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…

    ... the screen attributes of the ULA.

    The game maps ... squares, avoiding the need for horizontal scrolling. I'm undecided as to ... to copy it while the ULA is drawing the lower border ... ) 4T instructions will take one ULA scan-line precisely. A program ...
    ewgf ewgf August 2010 New game ideas
  • CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…

    ... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ...
    Ralf Ralf October 2011 Chit chat
  • CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…

    ... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ...
    polomint polomint October 2011 Chit chat
  • CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…

    ... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ...
    Wookiee Wookiee October 2011 Chit chat
  • 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…

    ...
    Description almost finished. The ULA clone is complete, regarding basic ... syncs. Floating bus and "ULA snow" is present as well.
    ULA draws about 40mW.

    horizontal retrace.
    [img]http ...
    mcleod_ideafix mcleod_ideafix November 2012 Hardware
  • SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…

    ... and drop support.
    Added ULA Snow effect, and Floating bus based ...
    Dunny Dunny May 2002 Emulators
  • ZX Spin 0.4 available for Download.Standard Cut-n-Paste from the CSS post: If all goes well, I'll upload it to WOS on monday. ----------------------------------------- Okay, it's th…

    ... .
    Fixed a bug with ULA Snow and a reset - also demos ...
    Dunny Dunny November 2002 Emulators
  • good but not so known shooterscan anybody recommend a good horizontal scrolling shooter which is not so known ?

    can anybody recommend a good horizontal scrolling shooter which is not so known ?
    Fikee Fikee May 2004 Games
  • Super Mario World clone ?Does anyone have any good suggestions for a game similar to the basic gameplay of SMW ? Eg a horizontal scrolling game where the main character has …

    ... SMW ?

    Eg a horizontal scrolling game where the main character ...
    psj3809 psj3809 February 2005 Games
  • 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…

    I 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/rtunes.zip"]www.geocities.com/ruijtunest/rtunes.zip[/url]


    Is there ...
    rtunes rtunes August 2005 Development
  • How to create pretty screenshot maps[size=+1][b]A. What will I need?[/b][/size] 01. Your favorite [url=http://www.worldofspectrum.org/emulators.html]Speccy emulator[/url]. 02. An util…

    ...

    03. Scrolling game (vertical or horizontal scrolling only), 2D ([url=http ... ]) - easy

    04. Scrolling game (scrolling in all directions), 2D ([url ... />
    06. Parallax scrolling game (vertical or horizontal scrolling only), 2D or 3D ...
    Pavero Pavero May 2006 Support files
  • ZXSpin 0.61 Available nowHi all! Well, after a lengthy few testing cycles, I'm taking the plunge and uploading the latest version of ZXSpin, to replace the rather aged old 0…

    ... />
    - Added much more accurate "ULA snow" and IR contention. Note that ... truly accurate snow is probably not an option ...
    Dunny Dunny December 2006 Emulators
  • help with name of a gameI'm trying to remember the name of a game i got with my specturm +3 as part disc's that came with it The pack of games it came with also had gift fr…

    ... etc)
    it was a horizontal scrolling game (like alien storm slight ...
    xpd259 xpd259 August 2007 Games
  • list of ZX games with raining effect(ula snow)If you know any ZX games with raining effect in screen, then add game name to list. I know about this games only: (tested on real ZX128+2 - grey) 4x…

    If you know any ZX games with raining effect in screen, then add game name to list.

    I know about this games only: (tested on real ZX128+2 - grey)
    4x4 puzzle
    at4open
    black raven
    breditor
    death valley
    gambit< ...
    velesoft velesoft April 2008 Games
  • interface1discipleanyone manage to virtually connect two emulators running on the same machine? could zx spin be modified to replay two rzx files simultaneously? any o…

    ... an lcd screen - think the ula snow comes thru ?
    Roger Jowett Roger Jowett April 2009 Emulators
  • emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…

    ... but now dot crawl and ula snow - though these are not the ... reader please help
    the ula+ is only for the harlequin ... time or with the spectrum ula a whole third of the ...
    Roger Jowett Roger Jowett September 2010 Emulators
  • WANTED - Artist and Designer for Shoot'em-Up...WANTED - Artist and Designer for original Shoot'em-Up game on the 128K ZX Spectrum. Two positions are available, Artist and Designer - although the …

    ... work on an ASCII-based horizontal scrolling shoot'em-up currently in ...
    bobs bobs January 2012 Development
  • Strange behaviour in real hardware but not in emulatorsWell, at least not in any emulator I've tried. I've been reported by fellow forum member Macc that both our Maritrini Monster Slayer and Retroworks'…

    ... problem in emulators, unlike the ULA snow effect which can be reproduced ... between $C0 and $FF, the ULA gets confused and crashes can ...
    na_th_an na_th_an March 2012 Emulators
  • Something a bit like Jetpack Joyride in flavour?Jetpack Joyride is a fairly simple horizontal scrolling game, in which the player has one control. That control applies power to the jetpack as long …

    ... Joyride is a fairly simple horizontal scrolling game, in which the player ...
    Bangstick Bangstick April 2012 New game ideas
<1234567…34>

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