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Search Again :: Adv Search 1000 results in 0.048s
<1234567…34>
  • Screen AttributesNot sure if this is a devolopment question but here goes... In my limited understanding, the 'attribute file' of a speccy is 5800h to 5AFFh and each…

    ... each character position on the screen. With bits 0 to 2 ...
    Saboteur Saboteur January 2005 Development
  • What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…

    ... happens.

    Obviously, the screen goes black, but you also ... value being sent to every screen position - a byte with ... was also sent to the screen attributes.

    I notice that ... the screen seems to fill in backwards, and then get cleared ...
    Gwyn Gwyn February 2006 Sinclair Miscellaneous
  • "This is a screensaver that do not save the screen"Which was a quote from the first release of SCREEN$ back in April 2001. Little did he know that, against the best judgement of myself and my peers, I…

    ... from the first release of SCREEN$ back in April 2001. ... , then feel free!

    Get SCREEN$ 1.9c from here:
    SCREEN.zip[/url]

    ... words on configuration:

    SCREEN$ has possibly the nicest Speccy ...
    Dunny Dunny April 2009 Sinclair Miscellaneous
  • ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…

    ... /> //
    // *****************************************************************************
    // zxsclzf ZX Spectrum Screen Compressor
    // by Tom Dalby ... )
    ld l,(hl) ; 4t - get screen start low byte
    ld ...
    TomD TomD April 2017 Development
  • Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…

    ... ie, printing instructions on the screen, then clearing them off and ... of the earliest non-standard screen loading systems being released ... while to get right - not to mention the screen updates.
    screen attributes in a diamond-type fashion ...
    JonNorth JonNorth May 2006 Games
  • Multiple loading screens[i]Action Biker[/i] suffers from having to endure multiple loading screens. Any other games that have this annoying "feature"?

    ... /> So, technically, by modifying the screen attributes at the same speed as ... possible to change the screen attributes mid-cell, to get more than two ...
    48K 48K October 2006 Games
  • Multiple loading screens[i]Action Biker[/i] suffers from having to endure multiple loading screens. Any other games that have this annoying "feature"?

    ... possible to change the screen attributes mid-cell, to get more than two ... and one attribute byte. To get more than one attribute per ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Games
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... thought I'd post some screen grabs to whet peoples' appetites ... to figure out how to get the attributes up there with them ...
    48K 48K February 2007 Development
  • horizontal shmupsare there any speccy horizontal shmups where you freely move your ship (or whatever) pixel-by-pixel except penetrator? (i?m glad to realize, the lack…

    Terra Cresta started out 'full screen' scrolling! But Paul (he used ... your x offset you can get loads of differnt looking landscapes ... to do with this. (The screen attributes are all BRIGHT and as ...
    frobush frobush June 2007 Games
  • One for the demo codersOn this occasion I forgot I had already asked the exact same question in another thread.

    ... in look-up table and get new attribute from table.
    ;HL=screen attributes
    ld e,(hl)
    get very high speed in trade ... stack to read or write attributes.

    [b]edit[/b ...
    Shiru Shiru October 2008 Development
  • 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…

    ... would be working with the screen attributes of the ULA.
    The game screen will still need to scroll ... a copy of the screen attributes data, except that the ... believe I can even get the two-channel arcade ... This way, whenever I get stuck on one 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…

    ... would be working with the screen attributes of the ULA.

    screen attributes data, except that the ink ... /> I believe I can even get the two-channel arcade music ... notes. This way, whenever I get stuck on one program, I ...
    ewgf ewgf August 2010 New game ideas
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ; Prints characters directly to screen bypassing ROM calls
    ... Get pixel line
    LD (DE),A ; Store in screen ... Get current attributes
    LD (HL),A ; Set screen attribute ...
    POP HL ; Get ...
    Jonathan Harston Jonathan Harston November 2010 Development
  • Loading screen noise in Scott Pilgrim vs the WorldAfter coming back from a short vacation and starting to watch some movies, I watched "Scott Pilgrim vs the World". It had references to 8-bit stuff f…

    ... the snippets as being variously screen, attributes, leader and generic data. Unfortunately ... don't think I can get any more specific than that ... as I'm going to get from that clip - if there ... to wait for someone to get hold of the BluRay!
    gasman gasman November 2010 Sinclair Miscellaneous
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ; Prints characters directly to screen bypassing ROM calls
    ... Get pixel line
    LD (DE),A ; Store in screen ... Get current attributes
    LD (HL),A ; Set screen attribute ...
    POP HL ; Get ...
    Jonathan Harston Jonathan Harston November 2010 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…

    ... zip"]patch bundle[/URL] to get the original Alkatraz release of ... - just what's need to get +2A/B/3 et al ... />
    Both patches use the screen attributes as temporary workspace when decrypting ... - the screen display will look a little ...
    jp jp November 2010 Games
  • Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…

    ... +768-1 ;Count bytes for screen + attributes less 1
    LDIR ;Copy ... /> PUSH DE ;...as they'll get messed...
    PUSH HL ;...around ... .

    LD A,(DE) ;Get 1 byte of colour
    IN A,(C) ;Get key status
    AND 1 ...
    joefish joefish February 2011 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... saving is that the attributes are contiguous in memory, ... Get current attributes
    LD (HL),A LD (HL),A ; Set screen ... attribute
    POP HL ; Get print position back ... &5800 ; Address in attributes of current position
    ...
    Jonathan Harston Jonathan Harston June 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ) ; Get current attributes
    LD (HL),A LD (HL),A ; Set screen attribute ...
    POP HL ; Get print position back ... ,(HL) ; Get pixel line
    LD (DE),A ; Store in screen saving ...
    Baggers Baggers June 2012 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... .

    Edit: Managed to get a clean load at 2000 ... got 1/3 of the screen attributes before failing).

    Hope ...
    balford balford September 2013 Development
  • Sierra AGII've been thinking recently about starting a project to port Sierra's AGI engine to the ZX Spectrum 128. I've been reading the AGI specs and to me i…

    ... to attribute limitations. Each screen would need to be converted ... too slow to render each screen for instance), and RLC ...
    You would get better results storing each screen using [URL="http ... amount of tweaking due to screen attributes, I was more referring ...
    manonfire manonfire January 2014 Development
  • Calculating screen address to alternative ATTR area?I'm using this small snippet of code to convert a screen address to an attribute cell address... [CODE]AttrDE: ld a, d ; get the hig…

    As a matter of interest, OR $D8 would get you into the shadow screen attributes on a 128K. Might be useful. Might not be.
    spud spud January 2014 Development
  • Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…

    ... .

    [quote]The attributes can be restored from any ... exactly but I just get a blank screen.


    ... and double checked everything, the attributes are confirmed at 36144 in ... offset 13616 and yet I get no attributes from the routine. Maybe ...
    Speccy_James Speccy_James February 2014 Development
  • Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…

    If by "I get no attributes" you mean that the screen stays black then ... that would indicate that the attributes area ... -zero byte amongst the saved attributes area and enter a break ...
    Battle Bunny Battle Bunny February 2014 Development
  • Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…

    ... of the screen attributes to be ... attributes
    add hl,de

    ld a,(de) ;get current screen ... and (hl) ;get screen PAPER
    cp ... and (hl) ;get screen INK
    cp ...
    Battle Bunny Battle Bunny February 2014 Development
  • Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…

    ... it expects all of the screen attributes to be zero when it ... starts, including the lower screen, so these must be set ... just that. I can't get this to run yet which ... been setting the attributes to black for the lower screen half with ...
    Speccy_James Speccy_James February 2014 Development
  • New NIRVANA+ feature: wide tiles!The size of each bicolor tile in [b]NIRVANA+[/b] is 2x2 characters (16x16 pixels), like this: [img]http://i60.tinypic.com/mw358y.png[/img] [i]* M…

    ... pattern and just repaint the attributes to make things move. And ... 128 you can use screen-swapping to get 8x4 attributes with just some ...
    joefish joefish September 2015 Brand new software
  • Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …

    ... compress each group. You will get better compression this way.[/quote ... . Then between levels, set the screen attributes to black and unpack all ... the data to screen memory, then copy the sprites ...
    joefish joefish January 2016 Development
  • Character Based SpritesHi, I'm working through Jonathan's excellent guide to writing games, and have mastered the animation of single UDGs. Before or move onto Pixel…

    ... draw_tile
    pop de ;get screen position back
    call ... br /> colour_tile ;DE pointing at attributes, HL at colours
    ... 1, 255

    ;attributes

    defb 80, ... 0, 15

    ;attributes

    defb 80, ...
    daveysludge daveysludge July 2016 Development
  • Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …

    ... trap to enable us to get the filename the user ... LD-BYTES, where we can get the information about
    // ... br />
    // A trap to get the program line just successfully ... />
    Sets the border and screen attributes on startup. Should work the ...
    Dunny Dunny October 2016 Development
<1234567…34>

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