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  • 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
  • Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…

    ... vertical pattern in the display bitmap area, which looks like this ...
    Ast_A_Moore Ast_A_Moore January 2018 Hardware
  • RAD for SpeccyJust wanted to share a fine technique of rapid app development for ZX Spectrum in C. Programming without debugger is a pain. It comes down to needing…

    ... I commonly create a 1bpp bitmap, and atom functions to ... displaying a hi-res bitmap and clipping its top ... br /> {
    // We need bitmap rectangle to calculate.
    // OPTIMIZE ... coordinates, calculate y bounds inside bitmap.
    int x2, y2 ...
    tstih tstih 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
  • converting sna to tapsince i'm struggling to find a simple sna to tap converter that works fine on gnu/linux, i'm about starting to code one on my own (using a scripting …

    ... val"17664"

    the assembly code in the last chunck ...
    nitrofurano nitrofurano April 2019 Development
  • Replacing voltage regulators - need to sanity check a few things pleaseHi Everyone I'm in the process (with a lot of help from some friends at Greenford Computer Club), of giving my three Speccys some much needed prev…

    ... to remove the entire heatsink assembly and replace it with the ...
    chrisgreen chrisgreen May 2019 Hardware
  • Not directly Speccy related, but too cool not to share...Here's a bunch of numeric optimizations that you can do in assembly -- [url="https://graphics.stanford.edu/~seander/bithacks.html"]Bit Tweedling H…

    Here's a bunch of numeric optimizations that you can do in assembly --

    [url="https://graphics.stanford.edu/~seander/bithacks.html"]Bit Tweedling Hacks[/url]
    tstih tstih June 2019 Development
  • MB03 UltimateDear ZX friends, you may have heard of MB-02+, probably the best disk interface for ZX Spectrum, originated back in the 90's. Although not much sp…

    ... , 130 EUR is a board+ assembly in proffesional company, no other ...
    Hood Hood July 2019 Hardware
  • Setting breakpoints in source code to make debugging easierAfter two years I've resumed my Speccy coding project. I'm porting a yet "unported" game from C64/Atari to 48k Spectrum using Z80 assembler. At the m…

    ... I have 2768 lines of assembly code and that's basically ...
    arttu arttu August 2019 Development
  • im looking for short demoscene type graphics demos that have source code in .asm formator have the assembly listing. smaller the better

    or have the assembly listing. smaller the better
    digital digital August 2019 Development
  • SpecBAS really needs a manual!That Word doc that I converted to an RTF for you Dunny and ASH-II, is still somewhat sparse. I spent bloody hours PLOT/DRAWing a landscape to steer m…

    ... bank’s memory represents the bitmap surface, row by row, top ...
    mik3d3nch mik3d3nch August 2019 Sinclair Basic
  • How do emulators make code appears as running at 3.5Mhz?Decent Z80 emulators on github return t-states after executing an instruction, giving you the ability to emulate Speccy relatively well. But there ar…

    ... just that part of the bitmap, then blit to the screen ...
    tstih tstih October 2019 Development
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