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  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ...

    xcoord defb 0
    ycoord defb 15[/quote]


    xcoord defb 0 - initial starting position. of ... accumulator with a?
    ycoord defb 15 - initial starting position of ...
    antonyjones101 antonyjones101 September 2015 Development
  • New Game. KNIGHTMARE2ZXClimacus & KgMcNeil are pleased to finally be able to announce the sequel to our previous Knightmare ZX game. Developed as a competition entry for…

    ... boss fight, smooth scrolling, interesting backgrounds, masked foregrounds and tritone title ...
    climacus climacus October 2015 Brand new software
  • How to Write ZX Spectrum Games - Jonathan CauldwellHello, I'm trying to improve my very basic level of assembler by reading the Jonathan Cauldwell guide. I'm fine with the basics LD, CP, and JP,…

    ... /> jp loop

    string defb 'ZX Spectrum is cool! '
    jonesypeter jonesypeter October 2015 Development
  • Ninjaman 8-way scrolling 50Hz multicolour demo :-)Here's a demo I've been working on for a while. The goal was to make the best scrolling routine possible on a humble 48K ZX Spectrum. I was origin…

    ... /> - 8-way scrolling
    - Multicolour backgrounds
    - No colour clash
    Kayamon Kayamon October 2015 Development
  • Update mods of old speccy games - any takers???Hi, I've seen, played and recorded for my channel quite a few cool rom updates of old games which include new backgrounds and colours such as Pac-Lan…

    ... old games which include new backgrounds and colours such as Pac ... added and the 5 missing backgrounds put in,...Geki's / Mike ...
    ZEUS ZEUS February 2016 Games
  • Competition time - design a WoS logoHello, all.. As part of the redesign, we would like to have new logos for use in Social Media/links and also in the forum/site headers. The spe…

    ... be PNG format, with transparent backgrounds.

    200x200 (Social Media ...
    hackersanon hackersanon April 2016 Announcements
  • Secret message in BattyI decided to reverse engineer my favorite speccy game and found some interesting code that was never used... Load the game, with multiface or emul…

    ... position
    defb $47 ; attributes
    defb $0D ; length
    defb $0A ; "A ... "
    defb $26,$22 ...
    matja matja August 2016 Games
  • Comando Quatro review:New review at Spectrum Paradise. Comando Quatro this time, a nice game A mix of platformer and side scrolling shoot'em up/beat 'em up in which you p…

    ... seconds approximately. Good graphics and backgrounds, but too much colour clash ...
    Danae's Fan #1 Danae's Fan #1 September 2016 Games
  • 2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…

    ... enlarge.

    [code]
    defb 255, 255, 244, 155, 225 ... , 1, 192, 131, 128
    defb 125, 136, 1, 129, 5 ...
    daveysludge daveysludge September 2016 Development
  • So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…

    ... it is:
    [code]
    DEFB #0D ; hide the M/C ...
    The_Bert The_Bert September 2016 Sinclair Basic
  • Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…

    ... BC
    rst $28
    defb $3D,$38 ;restack,end_calc
    Battle Bunny Battle Bunny January 2017 Sinclair Basic
  • More basic assembly stuff!I've been figuring out some more stuff using CALL and DEFB but this has me a bit stumped. [code] ORG 33000 LD BC, 16384 PUSH BC CALL GO RET …

    ... more stuff using CALL and DEFB but this has me a ...
    ivanb303 ivanb303 March 2017 Assembler
  • Interupt service routinehas anyone set up a interupt service routing with pasmo? this one I tried resets the speccy EDIt- I placed the code after the END directive, I fi…

    ... /> defb 200
    defb 200
    defb 200
    defb 200
    defb 200
    defb ... 200
    defb ...
    slenkar slenkar April 2017 Development
  • 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…

    Quick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good zx7/rcs, but was written for a specific reason for The Order of Mazes back in 2015 and also because I wanted ...
    TomD TomD April 2017 Development
  • Mojon Twins MK2 and lighting effectsDoes anyone have any experience in getting the overlay.h working in the MK2 engine. There were several games written in the churro that used the ove…

    ... br />
    #asm
    ._ovl_halo defb 0, 0, 1, 1, 1 ... , 1, 0, 0
    defb 0, 1, 5, 5, 5 ... , 5, 1, 0
    defb 1, 5, 6, 6, 6 ... 6, 6, 5, 1
    defb 0, 1, 5, 5, 5 ...

    ._ovl_x defb 0
    ._ovl_y defb 0

    . ...
    andydansby andydansby June 2017 Development
  • High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …

    ... /> INSER_TEXT:

    DEFB 16, 7, 17, 0, 19 ... DEFM "--------"
    DEFB 22, 8, 12
    DEFB 255 ; end ...
    DEFM " "
    DEFB 255

    COL_1:< ... " TODAY'S BEST "
    DEFB 255

    ; ...
    Alessandro Grussu Alessandro Grussu July 2017 Assembler
  • Using BASIC from Machine CodeHi Folks, Came across a very interesting article by Toni Baker in Your Spectrum: http://www.users.globalnet.co.uk/~jg27paw4/yr11/yr11_66.htm …

    ... BASIC
    RST 8
    DEFB 255

    BASIC
    Paddy Coleman Paddy Coleman August 2017 Development
  • Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …

    ... /> ret

    string
    defb 'World of Spectrum is cool ...
    Scorpion_Realities Scorpion_Realities October 2017 Development
  • A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…

    ...
    left_key defb 0
    right_key defb 0
    up_key defb 0
    down_key defb 0
    fire_key defb 0
    bomb_key defb 0
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • How to avoid flicking? IM2 help.Hi, I have started on a quest to make a demo for ZX Spectrum. However the display is flickering and I guess it is something about updating at…

    ...

    pattern1: defb %11111100
    pattern2: defb %00000011

    screenstart ...
    MartinMSPedersen MartinMSPedersen March 2018 Assembler
  • Tumblepop portHi all Tumblepop is one of my all-time arcade favourites, so a Spectrum port would be great. In fact some time ago I started to work in the stages…

    ... to work in the stages backgrounds, so I'm sharing them ...
    oblo oblo December 2018 New game ideas
  • [Video] Bomb Jack PlusIf you like Bomb Jack on the zx spectrum then this may be for you. Bomb Jack+ gives you new backgrounds and new bomb layouts. Check it out. https://…

    If you like Bomb Jack on the zx spectrum then this may be for you. Bomb Jack+ gives you new backgrounds and new bomb layouts. Check it out.
    https://www.youtube.com/watch?v=RQobqDvNX4A
    morcar morcar July 2019 Games
  • Is it possible to run a single BASIC line via a ROM CALL of the Standard ZX 48k ROM?On: https://cygnus.speccy.cz/popis_trdos-assembler.php I found the following code: [code] CHADD equ 23645 ; Location of SOS variable CHADD ld…

    ...

    SAVE defb 234 ; code for REM
    defb 34 ; code for "
    defb 13
    < ... br /> LOAD defb 234 ; code for ... defm "filename"
    defb 34 ; code for "
    defb 13
    [/code ...
    Luzie Luzie October 2019 Development
  • Which coin-op classics still need a great Speccy conversion?Most of my faves have been done in the last couple of years - Turtles, Kung Fu Master, Rally-X, Mr Do, the Space Invaders and Pac-Man emulators, the …

    ... is lacking, with dull black backgrounds (Artic) or crappy lazy graphics ...
    Rev_Stuart_Campbell Rev_Stuart_Campbell October 2019 Games
  • Should I get a NEXT?Despite my having wanted one almost since I heard about it, I'm beginning to wonder whether it would be an extravagance, 'cos its sure to cost a fair…

    ... game with sprites and moving backgrounds and sound in Basic if ...
    mik3d3nch mik3d3nch March 2020 Chit chat
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