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<1234567…34>
  • How to Write ZX Spectrum Games As some of you may know, it has long been my intention to produce a document which explains pretty much everything I have learned - and am still lea…

    ... has long been my intention to produce a document which explains ... - about writing Spectrum games in case it is of assistance to new programmers ... what will probably turn out to be many mistakes are welcome ...
    jonathan jonathan February 2006 Announcements
  • 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,…

    ... ,

    I'm trying to improve my very basic level ... , but I'm quite new to the assember instructions.


    string defb 'ZX Spectrum is cool! '
    defb 13 ...
    jonesypeter jonesypeter October 2015 Development
  • What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…

    ... -string ; length of string to print
    call 8252 ... (nicked from Johnathan Cauldwell's How to write ZX Spectrum Games)

    It ... all... any ideas on how to get this working?
    ... interested to know what you 'pros' use for Spectrum machine ...
    xyzzy xyzzy December 2009 Development
  • Newbie's development thoughts.Just wanted to thank WOS development forum regulars, for the amazing information etc contained within these pages. 20+ years ago a did a little asse…

    ... of. Working through JC's "How To Write ZX Spectrum Games" has been amazingly informative ... ... in-the-bum' to 'I completely understand how I can implement ... music in this game' thanks to ... , I am going to have to start looking at graphics ...
    uglifruit uglifruit July 2011 Development
  • Falling Blocks - new game from z80 assembly beginner<p>I started learning z80 assembly earlier this year, mostly from reading Jonathan Cauldwell's "How to write ZX Spectrum Games" and from reading arti…

    ... from reading Jonathan Cauldwell's "How to write ZX Spectrum Games" and from reading articles ... my first game for the Spectrum, and I thought it ... might be interesting to other beginners looking for ... source code to an entire game. While ...
    soiaf soiaf June 2015 Development
  • New Game - Ishido: The Way of StonesHi! My name is Mezei Róbert (m/zx), I am an Assembly beginner from Hungary. Although I’m not an absolute rookie, but I didn't practiced for 23 years…

    ... game for Spectrum. I did not know how to begin ... chapters of “Jonathan Cauldwell: How To Write ZX Spectrum Games” appeared in Hungarian translation ... I am pleased. The ZX Spectrum version became as I ... br /> Everything else here to find: http://fanzix.hu/ ...
    mzx mzx October 2015 Brand new software
  • Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…

    ... /> The most obvious optimization is to replace the ldir with 24 ... .wordpress.com/2013/10/02/how-to-write-zx-spectrum-games-chapter-13/ and mess with ...
    Sol_HSA Sol_HSA April 2016 Development
  • Designing a game.Hi all Lets say that i have been impressed with the games being created by guys on WOS and want to have a shot at making a game myself,my ageing know…

    And if you fancy having a crack at machine language programming have a read of Jonathan's SUPERB beginners guide "How to Write ZX Spectrum Games" at [url]http://members.fortunecity.com/jonathan6/egghead/id2.html[/url]
    spud spud April 2011 Development
  • New WIP underway - 'Dingo'.Hi, Prepare for a long post. Perhaps I can even challenge ewgf here. :razz: Anyway, I've been meaning to get into Z80 programming and making a game…

    ... be the one to ask how simple it really is ... to do such detection - ... your description, Im tempted to imagine that one checks ... , however... Is that how you would do it?... ... a read of his How to Write ZX Spectrum Games document, Chapter 7. ;)
    spud spud September 2011 Development
  • Assembly game programming on ZX how-to?Hi. I'm planning to build and release new software for the Speccy but I'm pretty lame as to handle its hardware despite a good mastery of Z80 assembl…

    ... Cauldwell wrote a document called "How to write ZX Spectrum Games" which I'd have thought ... . Maybe he could be persuaded to upload a copy somewhere?
    ccowley ccowley September 2012 Development
  • Assembly game programming on ZX how-to?Hi. I'm planning to build and release new software for the Speccy but I'm pretty lame as to handle its hardware despite a good mastery of Z80 assembl…

    ... Cauldwell wrote a document called "How to write ZX Spectrum Games" which I'd have thought ... . Maybe he could be persuaded to upload a copy somewhere?[/QUOTE ...
    guesser guesser September 2012 Development
  • How do I detect if key 'H' is pressed in machine code?How do I detect that the key has been pressed? I have been using the IN 239 command for keys 6-0, but dont know how to detech 'H'...

    See [URL="http://chuntey.wordpress.com/2012/12/19/how-to-write-zx-spectrum-games-chapter-2/"]Chapter 2 of How To Write ZX Spectrum Games[/URL].
    Arjun Arjun April 2013 Development
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... .wordpress.com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/[/url]


    EDIT: GOODNESS! What happened to JCs site???!?!?!?!?!? Where's it ...
    ZnorXman ZnorXman August 2013 Development
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... .wordpress.com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/[/url]


    EDIT: GOODNESS! What happened to JCs site???!?!?!?!?!? Where's it ... gone off to, eh?!?!?!?[/QUOTE]

    Thanks ...
    wibble wibble August 2013 Development
  • coding guruOk I'm looking for a to help me in my quest to do my first proper game. The 80's child in me thinks he can do it, But the 2013 man in me knows zip. …

    If you can find it, read Jonathan Cauldwell's [B]How to Write ZX Spectrum Games[/B] guide.
    spud spud September 2013 Sinclair Miscellaneous
  • Collision detection for interlocking shapes[SIZE=3][FONT=Calibri]I?m looking for some advice as I?m not sure how to resolve the following problem. I have an in memory structure that holds info…

    ... .wordpress.com/2013/09/08/how-to-write-zx-spectrum-games-chapter-7/"]this[/URL] article ... the sprite collision box corners to more closely fit the sprite ...
    Arjun Arjun October 2013 Development
  • Seeing the code/In emulatorHello, Here is my Noob question. Is it possible to see the code for these games in an emulator? To be able to study the code? I am using the Sp…

    ... =guesser;740808]Being able to see the code and being ... able to work out what any ... it can be tricky to understand why several of ... .com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/"]a good ... guide to writing one's own games[/URL] but ...
    szeliga szeliga December 2013 Sinclair Basic
  • Seeing the code/In emulatorHello, Here is my Noob question. Is it possible to see the code for these games in an emulator? To be able to study the code? I am using the Sp…

    ... , it can be tricky to understand why several of them ... wordpress.com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/"]a good guide ... to writing one's own games[/URL] but I ... learning machine code and several games authors have made commented ...
    guesser guesser December 2013 Sinclair Basic
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... ?id=2000363[/URL]

    To get the basic things and ... /18/how-to-write-zx-spectrum-games-chapter-1/"]http://chuntey.wordpress.com/2012/12/18/how-to-write-zx-spectrum-games ...
    apenao apenao January 2014 Development
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... ]

    To get the basic things and ... how-to-write-zx-spectrum-games-chapter-1/"]http://chuntey.wordpress.com/2012/12/18/how-to-write-zx-spectrum-games ... its very easy to get in to -considering the topic ... /> Is there any guides to getting started with c? I ...
    Lost Lost January 2014 Development
  • Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …

    ... or so. This is similar to how the z80 scans the keyboard ... if you want the z80 to "service" your interrupts also ... /> Could you point me to some material regarding the interrupts ... wordpress.com/2013/10/02/how-to-write-zx-spectrum-games-chapter-17/"]this[/URL] of ...
    Arjun Arjun February 2014 Development
  • Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …

    ... .wordpress.com/2013/10/02/how-to-write-zx-spectrum-games-chapter-17/"]this[/URL] of ...
    David Jones David Jones February 2014 Development
  • Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…

    ... /28/how-to-write-zx-spectrum-games-chapter-5/"]http://chuntey.wordpress.com/2013/02/28/how-to-write-zx-spectrum-games ...
    alienbanana alienbanana March 2014 Development
  • Are there resources to learn assembly programming for the ZX Spectrum?Hi, I've seen and read some tutorials about Z80 programming and I have now a pretty good understanding of how it works, I've been doing some 6502 pro…

    ... /u/3397800/JC_HowToZXSpectrum0.5.doc"]How to Write ZX Spectrum Games Version 0.5[/URL]
    how to assemble code using a PC ...
    robpearmain robpearmain May 2014 Development
  • Are there resources to learn assembly programming for the ZX Spectrum?Hi, I've seen and read some tutorials about Z80 programming and I have now a pretty good understanding of how it works, I've been doing some 6502 pro…

    ... /u/3397800/JC_HowToZXSpectrum0.5.doc"]How to Write ZX Spectrum Games Version 0.5[/URL]
    how to assemble code using a PC ... /> Rob!! Welcome back to the forums!!!
    Glad to see you around ...
    Ivanzx Ivanzx May 2014 Development
  • 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…

    ... wordpress.com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/"]chapter 1[/url ... think differently I believe these to NOT be needed and have ... after you assemble the code to memory (or after you ... again once you're back to BASIC (without assembling again or ...
    lunarul lunarul September 2015 Development
  • Simple bit of machine code not working [SOLVED]ishHi all. It's late and I'm tired and I have no idea why the following piece of code wont display a little smiley face [code]ld hl,udg ld (236…

    ... /18/how-to-write-zx-spectrum-games-chapter-1/"]https://chuntey.wordpress.com/2012/12/18/how-to-write-zx-spectrum-games ...
    jonesypeter jonesypeter March 2016 Development
  • Any noob friendly speccy dev tutorials?I mean, for a person who never used ANY kind of assembly, let alone Z80 one. Would be good if focused on making a game. Additionally, I want your …

    ... fancy stuff would be good to have.[/quote]

    ... is not the right time to mention this, but you can ... you're wanting to program? If it's games then Jonathan Cauldwell ... .wordpress.com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/

    ...
    guesser guesser April 2016 Development
  • Any noob friendly speccy dev tutorials?I mean, for a person who never used ANY kind of assembly, let alone Z80 one. Would be good if focused on making a game. Additionally, I want your …

    [quote="guesser;857311"]If it's games then Arjun's series of blogs might be the sort of thing you're looking for https://chuntey.wordpress.com/2012/12/18/how-to-write-zx-spectrum-games-chapter-1/[/quote]

    This is Cauldwell's.
    Einar Saukas Einar Saukas April 2016 Development
  • Print (to screen) avalue held in a register pairHi guys, looking for a routine that will print any value from 0 to 65535 to the current position on the screen. I once heard that there was a PRIN…

    ... Cauldwell's 'How to Write ZX Spectrum Games'.
    This one goes up to 9999

    and this one goes up to 65535

    [code] ld ...
    Sokurah Sokurah October 2016 Development
<1234567…34>

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