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  • SeBASIC Updated to version 3.2 by aowen...SeBASIC has just received an update!... Version 3.2 is now available, but it'll cost ya!... Its only $5 USD, and can be downloaded from here:…

    ... external data into the main assembly file.
    * Switched default compiler ... ROM, the manual, the source assembly for the rom and a ...
    kgmcneil kgmcneil November 2016 Announcements
  • Ruminations about Life, Middle Age and Human Nature in General.So being forty. I've grown to admit that I am now middle aged. With it comes a perspective on life that I'd not appreciated in my younger years. I ca…

    ... looking for excuses to create division and put themselves on the ...
    Scottie_uk Scottie_uk December 2016 Chit chat
  • ROM PRINT routine issuesHi all, I am using the ROM print routines a lot in my assembly program and I'm experiencing issues. I am changing the system variable DF CC to po…

    ... routines a lot in my assembly program and I'm experiencing ...
    Kevin_C Kevin_C December 2016 Development
  • Just speccy or harlequin ?Hi all, I just wondered, to fit on an original rubber key 48k spectrum, which one would you recommend ? Just speccy 128k or the harlequin 128k ? S…

    Hi all,
    I just wondered, to fit on an original rubber key 48k spectrum, which one would you recommend ?
    Just speccy 128k or the harlequin 128k ?
    Self assembly and soldering is no problem.
    Greetings
    frankje frankje December 2016 Hardware
  • Z88DK v1.99B ReleasedAt Sourceforge: https://sourceforge.net/projects/z88dk/ It's been a year since the last release so it was time for another. This is another tran…

    ... that contains the tools and assembly language libraries necessary to develop ... code in either C or assembly language for z80-based machines ...
    Alcoholics Anonymous Alcoholics Anonymous January 2017 Announcements
  • Testing your codeOk, guys, again I here with question. How do you test your works? I understand how to test functions and procedures mathematically (for example, g…

    ... ?

    Yes, code is assembly.
    Bedazzle Bedazzle January 2017 Development
  • Fuse for macOS 1.3.3 ReleasedA new version of Fuse for macOS has been released at the dedicated sourceforge project: https://sourceforge.net/projects/fuse-for-macosx/ Note …

    ... the members of the "Z80 Assembly Programming On The ZX Spectrum ...
    Fred Fred February 2017 Emulators
  • New Game: A Yankee in Iraq (2017). A shoot-em-up.Last year, I [url="https://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992"]resurrected my old shoot-em-u…

    ... from the ground up in assembly. For the technically non-savvy ...
    Ast_A_Moore Ast_A_Moore February 2017 Brand new software
  • Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly​ I keep coming up with the same issue. How do you do animations wit…

    With all my various noodlings in BASIC and indeed with my so far limited assembly​ I keep coming up with the same issue. How do you do animations without flicker or trails ? Is this possible in BASIC ?
    ivanb303 ivanb303 March 2017 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 …

    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
    GO:
    POP BC
    RET
    [/code]

    ...
    ivanb303 ivanb303 March 2017 Assembler
  • New language for spectrumI made a halfway language between assembly and Basic here is some example code: [code] INFLOOPSTART ifram(scrolla=1) print(intera) endif…

    ... made a halfway language between assembly and Basic

    here ...
    slenkar slenkar April 2017 Development
  • Beginner's z88dk help rqdI'm struggling to get my first z88dk C program to compile. My program is this: #include <spectrum.h> int main() { zx_border(INK_BLACK); } …

    ...
    1 errors occurred during assembly
    Errors in source file ...
    thricenightly thricenightly June 2017 Development
  • Learn and Use Assembly Language on the ZX SpectrumDoes anyone by any chance have a scan of this in English they would be willing to share? I was listed on the Facebook Buy and Sell group last night …

    Does anyone by any chance have a scan of this in English they would be willing to share? I was listed on the Facebook Buy and Sell group last night but I was driving so missed it.

    http://www.worldofspectrum.org/infoseekid.cgi?id=2000213
    jonesypeter jonesypeter June 2017 Sinclair Miscellaneous
  • Key repeat weirdness with EI & IYI finally (after 35 years!) decided to write something a) for 48k speccy b) in z80 assembler. It's been over 20 years since I've written anything in …

    ... I've written anything in assembly language (and that was for ...
    arttu arttu July 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. …

    ... I started writing my own assembly routines only last year :> ...
    Alessandro Grussu Alessandro Grussu July 2017 Assembler
  • Step through assembly language whilst viewing registers and flagsHello, Is there anything available which would let me step through an assembler listing and see how each register (and flag) changes at each instr…

    Hello,

    Is there anything available which would let me step through an assembler listing and see how each register (and flag) changes at each instruction?

    Thanks
    jonesypeter jonesypeter August 2017 Development
  • Joystick Prototype #2Dear WOS, As you may know, I have recently completed the first prototype for my arcade-quality-Atari-controller-on-a-budget (loosely based on the…

    ... with the jigsaw-puzzle-like assembly method of the enclosure itself ...
    Swevicus Swevicus October 2017 Hardware
  • Strange behaviour in very simple ASM program.Someone sent me this and it shows something strange. Here's the BASIC listing [code] 10 CLEAR 32999 20 FOR n=33000 TO 33009 30 READ a: POKE n,a …

    ... ,201
    [/code]
    In assembly this should be.
    [code ...
    ivanb303 ivanb303 October 2017 Development
  • How do I convert a .z80 snapshot to a tape file?I've been fiddling with this for a while but can't get it to work reliably. I use Marvin to write short BASIC and assembly programs that uses .z80 in…

    ... to write short BASIC and assembly programs that uses .z80 in ...
    ivanb303 ivanb303 November 2017 Emulators
  • where can i get assembly language routines to play around with?preferably in .asm format or text with comments? ive googled it but there is very little

    preferably in .asm format or text with comments? ive googled it but there is very little
    digital digital November 2017 Development
  • Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…

    ... write a game completely in assembly. I've been using attributes ... to return from subroutines in assembly with a return value. Ie ...
    ivanb303 ivanb303 November 2017 Development
  • How would I turn memory paging on/off in Assembler?Sorry for the noob question. It's perfectly ok to do OUT 32765,48 in BASIC to turn memory paging off. But how do you do it in assembly language? I kn…

    ... do you do it in assembly language? I know there's ... an OUT in assembly and it's like this ...
    ivanb303 ivanb303 January 2018 Development
  • Machine Code input / assemblers [naive questions alert]Excuse me for the naive questions...in advance :) When I was a kid, I was struggling to understand how to input machine code into Spectrum. There…

    ... need to learn some Z80 assembly.
    I found a book ... so I can write my assembly there and then [b]somehow ...
    Pyjamarama Pyjamarama May 2018 Development
  • ZX Assembly Programming for the ZX SpectrumNo idea if anyone will be interested, but the above group on FB has a Slack chat channel available at http://bit.ly/zxasmslackchatchannel Would be…

    No idea if anyone will be interested, but the above group on FB has a Slack chat channel available at http://bit.ly/zxasmslackchatchannel

    Would be nice to get a load in there talking about coding. It's technically not limited to Z80 so feel ...
    polomint polomint June 2018 Development
  • Short unattended type-in'sThis follows a similar topic on the BBC/Acorn forum (said topic can be found [url="https://stardot.org.uk/forums/viewtopic.php?f=2&t=14919"]here[/url…

    ... if required. A bit of assembly I guess is OK though ...
    spider spider July 2018 Sinclair Miscellaneous
  • Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…

    I had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one of the bits of port 254 but which one ? If it's bit 4 then me writing 16s and 0s should do the trick but ...
    ivanb303 ivanb303 July 2018 Assembler
  • Could be a game ideaSnippets, bits o' this n' that as might be recollections or mayhap misplaced bits o' stories as is lookin' for somewhere to fit d'you see?.. Then,…

    ... the next step in the assembly process.

    If it ...
    mik3d3nch mik3d3nch August 2018 Chit chat
  • NextBuild releasedHi, I've curated a bunch of tools stitched together with scripts and written a library for developing on the Next, you can also use it for normal …

    ... allows the use of inline assembly and inclusion of user define ...
    david_retro david_retro October 2018 Development
  • ZY10, a tool to store and display some small bitmapped imagesZY10 Builder ============ Download at: https://www.sendspace.com/file/rncgbo ZY10 is a file format/tool to store some small images on the Spec…

    ... also includes a very small assembly program to print the stored ... - 'ZY10'
    4 - 252 Bytes - Assembly code to use to recall ... 49156

    * or in assembly:
    ld a,
    call ...
    Timmy Timmy November 2018 Development
  • AticAtac DisassemblyHi Guys, I've been spending quite a bit of time the last 2-3 weeks working on the AticAtac disassembly, evolving it into a much more documented as…

    ... into a much more documented assembly with all the routines labelled ...
    BloodBaz BloodBaz March 2019 Assembler
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Latest Posts

  • Minor British Sports that did become games on the ZX Spectrum
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  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on April 22
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    harriusherbartio on April 22
  • Fixed Speccy Software. And which games remained unfixed?
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