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  • Fastest emulator screen renderingHi, I'm developing an algorithm for fast emulator screen rendering and here is what I came up with. 1) Use 4bpp indexed image format as target …

    ... an algorithm for fast emulator screen rendering and here is what ... algorithm.[code]byte=next screen byte // get next screen byte
    p32 ... offsets from 16384 for each screen line as[code]uint16_t ... copying 32 bytes from speccy screen for every line directly ...
    tstih tstih November 2019 Development
  • New loading screen for THANATOSIn 1986 we already had a Mother of Dragons : ) My version: [img]https://www.dropbox.com/s/dydp51vil0vth1h/thanatos.png?raw=1[/img] [img]http…

    ... =1[/img]

    Original screen:

    [img]https://www ...
    MAC_BG MAC_BG February 2020 Games
  • New loading screen for LA AVENTURA ESPACIALMy version: [img]https://www.dropbox.com/s/hpwcadkkolea977/aventura%20espacial%20x2.png?raw=1[/img] The original screen: [img]https://www.d…

    ... [/img]

    The original screen:

    [img]https://www ...
    MAC_BG MAC_BG April 2020 Games
  • Why did JSW only have one staircase per screen?Just that really. Could stairs just have been another square type? Or was that just that way it was designed, and it could handled multiple per scree…

    Just that really. Could stairs just have been another square type? Or was that just that way it was designed, and it could handled multiple per screen? JSW2 has more than one staircase per screen.
    morph morph May 2020 Games
  • Is there an archive of Speccy title screen music?Hi, As above :) I've created a little screensaver for my own use that iterates through .scr and other image files, but I want to also play the …

    ... the music to the displayed screen (on multiple displays it would ...
    polomint polomint June 2020 Games
  • Full screen animationFull screen animations and other interesting hardware developments mainly z80... https://www.youtube.com/watch?v=zsjTpFR0oYQ http://www.fruitca…

    Full screen animations and other interesting hardware ...
    rogerjowett1 rogerjowett1 July 2020 Development
  • Screen corruption with devices on edge connector (grey +2)Hi, I've recently done a full capacitor replacement and replaced all 16x DRAM chips on my grey +2. Prior to this I would get a corrupted screen…

    ... I would get a corrupted screen after a few minutes of ... sitting at the +2 menu screen for several hours and it ... .pl) it starts up with screen corruption. Power it off, remove ...
    Megatron-UK Megatron-UK August 2020 Hardware
  • 48k Spec with composite video mod, screen adjustment possible?I've had a 48k Speccy with a composite video mod for a few years now, and although it works perfectly otherwise, the screen isn't centered correctly …

    ... it works perfectly otherwise, the screen isn't centered correctly - it ...
    Skaepoy Skaepoy August 2020 Hardware
  • Direct drive LCD screen - looking for information on previous projects people may have attempted.Hi All, My first post, so please forgive and guide if I've posted in the incorrect section. I'm a speccy user from way back in the 80's, but m…

    ... start again with designing the screen, so was working on building ... and captures writes to the screen location so as to build ... a coloured border around the screen.

    So kind ... also solve the problem around screen compatibility, and leave me with ...
    cj7hawk cj7hawk December 2020 Hardware
  • Screen RatioAn interesting thing happened with my photos on facebook of my Spectrum setup with my new OSSC (open source scan converter). Some made a fuss (in jes…

    ... big black borders on the screen, and it makes the text ...
    Scottie_uk Scottie_uk January 2021 Games
  • ZEsarUX 9.2 Release CandidateHi! I have uploaded a new ZEsarUX Release Candidate version 9.2. The final stable version will come in a few weeks, so stay tuned! You can down…

    ... key
    Improved panic screen: added countdown timer, ... /> -Fixed 4bp sprites: pattern calculating, transparency, anchor
    -Fixed ... Fixed Mac OS full screen
    Fixed loading General ... on fileselector +3 DSK screen previews using Speedlock protected ...
    chernandezba chernandezba March 2021 Emulators
  • ZEsarUX v9.2 Final released - Version 9.2 - Cliff Hanger edition. 05 April 2021As seen on: https://github.com/chernandezba/zesarux/releases [quote] ZEsarUX-9.2 @chernandezba chernandezba released this 21 hours ago · 6 com…

    ...
    -Fixed 4bpp sprites: pattern calculating, transparency, anchor
    -Fixed clipping ... segfaults on fileselector +3 DSK screen previews using Speedlock protected disks ... /> Fixed segfaults on fileselector TRD screen previews using protected disks or ...
    Luzie Luzie April 2021 Emulators
  • Extra screen in Jet Set Willy?I was online looking at screens from JSW when i came across a reference to an extra screen in JSW called April Showers that could be accessed by typi…

    I was online looking at screens from JSW when i came across a reference to an extra screen in JSW called April Showers that could be accessed by typing some code printed in Your Spectrum. Is this true? Has anyone came across this?
    zx1 zx1 March 2022 Games
  • New loading screen for VIXENIt had been a while since I had worked on a screen, so I got with this game whose cover art was its best part. Vixen [img]https://www.dropbox.c…

    It had been a while since I had worked on a screen, so I got with this game whose cover art was its best part.

    Vixen

    [img]https://www.dropbox.com/s/jbmxvnrnn5mp7vr/vixenx6.png?raw=1[/img]
    MAC_BG MAC_BG August 2022 Games
  • Your favourite machine apart from The SpectrumI've asked this on a couple of other sites, so now it's time to ask it here: what is your favourite machine, forgetting about the Speccy? For me, it'…

    ... the stack was faster than calculating it. Thats why I said ... you wanted to scroll a screen at the same speed as ... used was to update the screen about 6.25 times per ... it is watching movement on screen. Games like turrican suffered terribly ...
    Anonymous Anonymous November 2001 Games
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…

    ... (HL) ; set bit over old screen
    LD (HL),A ; put ... screenbyte on screen

    in stead of every time calculating the ...
    Dr BEEP Dr BEEP October 2001 Sinclair Miscellaneous
  • Which game was more wasting time ?Actually, a lot of games were wasting time but I remember some that I played a lot without never see the end ...; for exemple: 1. Underwulde 2. Arc …

    ... time involved the poor Speccy calculating the results and whatever else ... , whilst you stare at the screen and contemplate whether or not ...
    Collie Collie January 2003 Games
  • Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…

    ... modify the screen address directly rather than constantly calculating new screen addresses from ... form BBLLLSSS
    Notice the screen address 010BBSSS LLLCCCCC
    < ... close connection between character coordinates, screen address and attribute addresses. I ...
    Alcoholics Anonymous Alcoholics Anonymous June 2003 Sinclair Miscellaneous
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... you mean. I dont calculate screen addresses, these are read ... mean, only recalcluate the screen address when the sprite moves ... routine and assumed it was calculating addresses rather than looking them ... less complicated than the CPC screen layout though so I' ...
    AndyC AndyC August 2004 Development
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... makes it a lot quicker calculating graphics offset

    ; HL Contains Screen Address
    ; BC preserved
    ; HL Contains Screen Address
    ; DE Contains Char ...
    robpearmain robpearmain August 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…

    ... operations not involving screen, like keyboard reading, data calculating etc,
    however ...
    Ralf Ralf October 2004 Development
  • You've got the Programming skills, I've got the Ideas lets make lots of moneyYou know those tank games, one tank on either side of a hill where you choose angle of fire and strength, well can someone tell the the BASIC instruc…

    ... />
    Calculating a "hit" with the bottom of the screen is left ...
    Dunny Dunny February 2006 Sinclair Basic
  • EightyOne and CF cardsInspired by obo & piters discussion regarding imaging of flash card, I've added reading/writing to real disks to EightyOne. Hopefully it should allo…

    ... freezes, puts some pixels on screen, colors border.[/QUOTE]

    screen.[/QUOTE]

    Possibly, though ... ;& instead of an & calculating the LBA sector number in ...
    MikeW MikeW June 2006 Emulators
  • 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…

    ... rates and more objects on screen because of a 3D library ... 't isometric. You are still calculating where to place the sprites ...
    JamesD JamesD September 2006 Sinclair Miscellaneous
  • 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…

    ... ugly though, they are still calculating all the 3D points by ... more expensive than calculating the transformation of a dozen points on screen...
    Alcoholics Anonymous Alcoholics Anonymous 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…

    ... /> You can't avoid the screen layout - the best way to ... screen addresses, and refer to that all the time instead of calculating ...
    gasman gasman October 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…

    ... position to avoid complexities with calculating the true score.

    screen as a colour other than ...
    Digital Prawn Digital Prawn August 2007 Development
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