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Search Again :: Adv Search 1000 results in 0.031s
<1…16171819202122…34>
  • Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…

    ... pixel row of the character lines in middle third of the screen ... screen (now one character line down)? Regardless of whether adding 32 set ... is only safe on valid screen addresses from lines 0-190 ... of a line on the screen from lines 0-190.
    Kiwi Kiwi May 2006 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…

    ... printing instructions on the screen, then clearing them off ... was loading screen blocks as a set of nine ... bytes (eight for the screen ... slowly brought up the screen one pixel line at a time ... the earliest non-standard screen loading systems being ...
    JonNorth JonNorth May 2006 Games
  • 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…

    ... ZX SS (the section C above). Set these values: Left=0; Right ... first screen. Remove a main character (the section E above).

    06. Focus the emulator, visit other screen, press ... key for placing the second screen and press ENTER.
    < ...
    Pavero Pavero May 2006 Support files
  • Wide sprites in SP1 + Z88DKThe calls to sp1_CreateSpr(); and sp1_AddColSpr(); seems to have changed. Could someone please offer help in how to create a wide (wider than 16 pix…

    ... "view mask" checked, the set pixel / reset pixel will apply to the mask ... /> SP1 has set bits in the mask where the screen underneath should ... to put set bits where the sprite should cover the screen (ie ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Background image with SP1 and Z88DKWhat is the prefered way to place an entire (or very large) image in the background when using SP1? Should I convert it to a long (32*24=768 ) list o…

    ... the source file I linked above, but I'll extract ... If the xwrap flag was set and the print position went ... x position will also be set to 0 (with respect ... the yinc flag was also set the y position will ... to print an entire level screen with a single string (and ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Background image with SP1 and Z88DKWhat is the prefered way to place an entire (or very large) image in the background when using SP1? Should I convert it to a long (32*24=768 ) list o…

    ... back buffer". The back buffer (screen$) will need to be organized ... address stored in the struct_sp1_update.screen + an offset.

    ... store the screen$'s pixel data, and you'll need to set the ... colour). If you store the screen$ in full (6912 bytes ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • 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…

    ... : sp1_TileEntry(0, -0x4000 + screen); . Do not use "screen - 0x4000" -- I found ... screen$ is only (up to) 6144 bytes long as only pixel ... tile graphics with a background screen$ for background.

    ... .c in a previous test set. That test program, if ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…

    ... ,h
    add a,a ;Set highest bit of seed to ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…

    ... being set at a particular time. Print a message to the screen ... accurate clock, however, it is set to 09:30 to start ... promised to leave what's above RAMTOP alone, I'd tend ...
    emleymoor emleymoor July 2006 Sinclair Basic
  • Is Sabre Wulf a good game?Because i've never played it but i have the original cassette so is it worth booting up, or is it one of those games that's almost impossible to fini…

    ... - yes, it was an easy set of keys to program in ... sword around, having vulnerable points above and below balanced the gameplay ... you are catapulted across the screen. On many occasions I've ... , indeed - how to navigate a screen-high vertical path without getting ...
    Dunny Dunny July 2006 Games
  • Playing Denied Ultimate GamesHmmm, maybe this belongs in Emulators but it is game specific. Just been leafing through Games(TM) in Smiths and there's an article about a (strong)…

    ... sometimes leaves a menu on screen (the right-click-the-mouse ... file" option either, in the above dialogue box? The Atari ST ... 'Windows Compatible'. They can only set guidlines and hope 3rd parties ...
    ewgf ewgf August 2006 Games
  • TAP conversion project?I was wondering if there's any concerted effort to produce TAP versions of games only available in TZX or Z80/SNA/SLT format? Or are snapshots consid…

    ... so enter the debugger and set a breakpoint on $8317, ... it. Set a breakpoint on $8329 (after the screen has been ... bytes into $6B00 so set a breakpoint at $8333 ... into one file and set the headers to point ... file above is a little fancier (it blanks the screen and ...
    StuBruise StuBruise September 2006 Games
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... was expecting. It divides the screen into 8x8 blocks of pixels ... resolution. It's 2 bits/pixel with additional pallette control. 1 ... up to 4 bits per pixel and 1 byte represents 2 ... mode. But it lets you set 16 colors side by side ...
    JamesD JamesD September 2006 Sinclair Miscellaneous
  • Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…

    ... where to place attributes in screen memory. Probably not worth ... QUOTE]

    Changing pixel order doesn't matter much ... once for each 8x8 pixel square is going to ... new set of 32 attribute bytes when in the first pixel ... 't have our extra screen modes :-)
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Development
  • Currah MicrosourceHi Anyone here got a Currah Microsource ? I have one, its one of the original eval units complete with 'draft' manual. Just interested to see how …

    ... the first line of the screen buffer (4000h), then perform the ... the second pixel line. I definitely got a different set of bytes ...
    BloodBaz BloodBaz October 2006 Sinclair Miscellaneous
  • Xenon TriOxide (Xeo3)I just wanted you all to know that a new cross platform game has started development (well the +4 version has been around a while, but my colleague f…

    ... ) instruction but empty parts of screen are skipped.

    < ... scrolls background directly in the screen memory and it uses character ... routine which is calling code above is placed at 63925. so ... have it in screen memory already but one pixel right to the ...
    Fikee Fikee November 2006 Development
  • Scrolling Loader CounterPlease can someone help me with writing a scrolling counter for a loading system. I like the Hewson counter so i`ve taken the font from zynaps loade…

    ... ;put gfx into screen
    inc h ;move one pixel down
    screen. you want to make it ...
    call show_char ;the code above

    ld hl, ( ...
    Fikee Fikee November 2006 Development
  • Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…

    ... them :-)

    sp1_MoveSprPix() accepts pixel coordinates so you don't ... is drawn. It is set by default to 1 so ... alter sprite colours depending on screen position and rotation (data available ... the background clear flag is set. Right now the background ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Games
  • Speccy graphics on CBM64The recent "Starquake" thread had me browsing through Steve Crow's portfolio of games and I was quite surprised when following the links to the CBM64…

    ... complicated. To perform an arbitrary screen update you need to update ... mapped display and the character set itself. If you're only ... entire screen can be scrolled very cheaply in the pixel-mapped ... mode and putting graphics on screen is a ...
    Matt_B Matt_B November 2006 Games
  • Speccy graphics on CBM64The recent "Starquake" thread had me browsing through Steve Crow's portfolio of games and I was quite surprised when following the links to the CBM64…

    ... complicated. To perform an arbitrary screen update you need to update ... mapped display and the character set itself. If you're ... re trying to scroll the screen or something like that ... does? Many examples of pixel scrolling with colour attributes scrolling ...
    48K 48K November 2006 Games
  • Speccy graphics on CBM64The recent "Starquake" thread had me browsing through Steve Crow's portfolio of games and I was quite surprised when following the links to the CBM64…

    ... and match them on the screen as much as you want ... to believe that each pixel couldn't be set individually and the ... character set needed to be redefined ...
    monty.mole monty.mole November 2006 Games
  • tips on optimizing assemblyI wrote a small routine to rotate right a whole screen character line complete with attributes. This is my third ever assembly routine, so I guess i…

    ... /> [code]
    call gethl ; hl = screen address at column 31
    pixel row
    ldd
    pop ... byte into last byte of pixel row
    jp pe, ... so these bits are already set
    xor $85
    rrca ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Development
  • Why does Spectrum display has a border?Ok, this is problbly simple and very basic question but I don'r remember seeing an answer anywhere. Don't you think, that at first glance it is irr…

    Horizontal pixel size is a property ... pixels are. The spectrums pixel clock is 7MHz (which ... fill the width of the screen by slowing the clock ... horizontal borders because its pixel clock is only 6. ... significant portion of those are above and below the visible ...
    MikeW MikeW November 2006 Sinclair Miscellaneous
  • The ZX Spectrum Book of MapsFollowing some discussion in a maps thread, I have decided to make THE ZX SPECTRUM BOOK OF MAPS - VOLUME ONE At the moment, I have the following in…

    ... right down to the speccy pixel.

    I know you ... why the screen layout of the YSRnRY documentary is set to as ... it is: that way one Speccy pixel is ... exactly one pixel of the movie frame ...
    NickH NickH December 2006 Sinclair Miscellaneous
  • 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…

    ... />
    Each character cell on screen contains a single-byte background ... ) into a fixed 8-byte pixel buffer (this is where all ... register setup as described just above is supplied by the engine ... buffer and draw a second screen like usual into that double ...
    Alcoholics Anonymous Alcoholics Anonymous December 2006 Development
  • Small C on Sam help neededI'm trying to make good on some of my old developments that fell by the wayside and one of them uses Small C. The reason I stopped was down to not h…

    ... a time, so with the screen taking up two pages that ... have data and memory pages set up how you want. Don ... there is 8K spare above the screen memory as only 24K out ...
    Quazar Quazar December 2006 Development
  • Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …

    ... is it ( and all that above helped me to understand it ... they fitted ), blit them onto screen using that rom routine, then ... the next set of sprites, blit them, then do a screen flip ... moving sprites straight onto the screen pointer using my existing software ...
    DonkeyPong DonkeyPong January 2007 Development
  • Wanted: z80 asm routines...for the Sam. This call goes out to Colin and others who know how it should be done. If you look on the Sam C disk you can see the implementation…

    ... for sprites, backdrop images, full screen storyboard pages?[/QUOTE]
    < ...
    Really, there is no set format you should use, whatever ... fancy file structures, just raw pixel data.

    ... normal and transparent sprites to screen.

    And ...
    Quazar Quazar January 2007 Development
  • Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…

    ... , you usually see "something" on screen, as most chips die with ... set to 1 or reset to 0, which pretty much alters screen ... is set to that address. That's why on startup the screen ... appears with red dots moving down on a black background (pixel ...
    Marcelo Marcelo January 2007 Hardware
<1…16171819202122…34>

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