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  • New "Arkanoid" clone for ZX81!BATZ this time - DOWNLOAD: [url]http://zx81.republika.pl/batz.p[/url] a game by Peterz. 16K required. With my humble addition of AY music for ZonX …

    ... time -
    DOWNLOAD: [url]http://zx81.republika.pl/batz.p[/url ... ZonX owners.
    [img]http://zx81.republika.pl/batz.gif[/img ... ] [img]http://zx81.republika.pl/batz2.gif[/img ...
    Yerzmyey Yerzmyey July 2013 Brand new software
  • New game: Knights & Demons DXHi everybody! Our last game is here! Einar Saukas and me were working hard last five months (Einar on the code and myself on the grahpics and music)…

    ... features:

    - New amazing code written by Einar Saukas, using ... is now available on Sinclair ZX81, Commodore 64, Commodore 16/Plus4 ... conversiones-para-c-64-y-zx81"]http://kabutofactory.netne.net/ ... -conversiones-para-c-64-y-zx81[/URL]

    Hope ...
    Baron Ashler Baron Ashler July 2013 Brand new software
  • How to write self-relocating code using Pasmo?With z80asm, I can write code like this: [CODE] org 0 ; a total lie, but makes the reloc sums work .dest: equ …

    ... ; target address of relocated code
    ld bc,.reloc_start ... ld bc,.reloc_len ; length of code to relocate
    ldir ... lots of code
    ;; lots more code
    ;; even more code
    < ...
    stephenw32768 stephenw32768 August 2013 Development
  • BIFROST* example: "Knights & Demons DX" source codeA package containing the source files of our multicolor game "Knights & Demons DX" is now available for download [URL="http://www.mediafire.com/?hbch…

    ... ' timer (multiplied by 100)[/CODE]

    The ... br /> BIFROSTstart() ' enable BIFROST*[/CODE]

    This ... () ' wait for next frame[/CODE]

    Even ...
    Einar Saukas Einar Saukas 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…

    ... a spectrum in assembly/machine code... No fancy screen shinanagins, ... "/program loader.

    [code]
    10 LET X=61440 ...
    Paired registers

    [code]
    03 = INC BC
    3C
    C9
    [/code]

    returns... 61440...
    wibble wibble August 2013 Development
  • The Pros and Cons of "alternative" assembler syntaxContinuing from [URL]http://www.worldofspectrum.org/forums/showpost.php?p=720754&postcount=72[/URL] [QUOTE=u6c87;720754]But that wouldn't change if…

    ... sdas or sdcc will share code on the web that contains ... possibility of finding bits of code that do what you want ... bit broken (ADD A,B vs SUB B for example).
    AndyC AndyC September 2013 Development
  • Squishing code up nice and small then unsquashing it in assemblyI refer of course to data compression. I've done a search and there are lots of good compressors, but I can't seem to find one that works in assembl…

    ... a short bit of assembly code (exactly what I'm after ...
    R-Tape R-Tape September 2013 Development
  • Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…

    ... of showing how efficient the code is.

    I've ... to determine how fast the code runs?
    rune rune September 2013 Sinclair Miscellaneous
  • Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…

    ... attempt at learning machine code on the Spectrum made ... reset and editing the code, which is still waiting ... assembler window. However, writing code on a real Spectrum ... crashing in case bad code is executed? Did they ... who were learning machine code back in the 80s ...
    memrah memrah September 2013 Sinclair Miscellaneous
  • Converting Basic code into machine codeIm just interested to know if I can converter a game I've written in basic into Machine code, Is their a program that can do this??

    Im just interested to know if I can converter a game I've written in basic into Machine code, Is their a program that can do this??
    nonsenceinbasic nonsenceinbasic September 2013 Development
  • 128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…

    ... trick like this:

    [code];; load a 4000 byte BASIC ... (23620),1

    ret[/code]

    Ta-da, BASIC ... total crash. Loading BASIC as code from the 128 BASIC interpreter ... 's the return from machine code that doesn't.

    stephenw32768 stephenw32768 September 2013 Development
  • Business Card RayTracerThis is cool, not sure if it's been posted before. :) [URL="http://fabiensanglard.net/rayTracing_back_of_business_card/index.php"]Business Card RayT…

    ... /PPM%20Viewer/card.cpp"]Source code (.cpp)[/URL]
    I used ... patient.
    To compile using VS compiler: cl card.cpp
    polomint polomint September 2013 Chit chat
  • Can you use a ZX81 psu to power a ZX80?Can you use a ZX81 psu to power a ZX80 without causing any Damage? Cheers

    Can you use a ZX81 psu to power a ZX80 without causing any Damage?

    Cheers
    youno youno September 2013 Hardware
  • MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …

    ... appended to the MOVE_M code.

    [code]
    10 ... /> 9999 RETURN
    [/code]

    [code]
    ; MOVE_M moving ... /> ; CHR$ = graphic's character code
    ; 0:1 = direction ... ; Vlo Vhi Hlo Hhi Vs Hs Attr row col chr ...
    Battle Bunny Battle Bunny September 2013 Sinclair Basic
  • PDF Book - Easy Add-on Projects for Spectrum, ZX81 & ACEPDF Book - Easy Add-on Projects for Spectrum, ZX81 & ACE, is now available in the [url=http://www.jupiter-ace.co.uk/book_forth_ISBN-0859340996.htm…

    PDF Book - Easy Add-on Projects for Spectrum, ZX81 & ACE,

    is now available in the [url=http://www.jupiter-ace.co.uk/book_forth_ISBN-0859340996.html]Jupiter ACE archive[/url] a copy has been uploaded to WoS.
    Steve(spt) Steve(spt) September 2013 Announcements
  • NO$ZXI've just noticed a (new to me) Spectrum/ZX81/ZX80 emulator at [url]http://nocash.emubase.de/zx.htm[/url] and was wondering how it was (can't downl…

    ... a (new to me) Spectrum/ZX81/ZX80 emulator at

    code, so it might be of ...
    ewgf ewgf October 2013 Emulators
  • Quick fix for four joysticksHere's a quick modification to add four joysticks to any Speccy. This assumes you already have two Sinclair ports. [URL="http://joefish.co.uk/specc…

    ... basic. It also uses a ZX81 style short edge connector.

    [CODE]10 PRINT AT 0,0 ... 55;" "
    30 GOTO 10[/CODE]

    The question is ...
    joefish joefish October 2013 Hardware
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... and I'd appreciate a code review from anyone who has ... all GPLv2, derived from the ZX81 ROM and the SAM Coupe ...
    chev chev October 2013 Development
  • I know it's part ZX81 but what's the rest of it?You can see the ZX81 motherboard in the corner but I have no idea what the rest does, it powers up but I haven't managed to get the screen to tune in…

    You can see the ZX81 motherboard in the corner but ...
    youno youno October 2013 Hardware
  • LOAD "" CODE - Blind Alleycame across [B]Blind Alley[/B] in the archives, and both tzx/tap versions only have Bytes header, no Basic loader with autostart - please, anyone, ho…

    ... the archive that need LOAD "" CODE?
    de Vandemar Croup de Vandemar Croup October 2013 Games
  • Downloading code to physical hardwareHi folks, Back in the day, my devkit was a TRS-80 and I had a simple connector device from the TRS-80 parallel (printer) port to the expansion bus o…

    ... ways to get PC developed code over to a physical Spectrum ...
    David Jones David Jones December 2013 Development
  • Self modifying code ??I made a game in C that was mostly accessing arrays and using FOR NEXT loops, I ran out of memory, so I was thinking would it be possible to use sel…

    ... possible to use self-modifying code so that say 20 FOR ... NEXT loops use the same code?
    or 20 array look ... ups can use the same code?

    When using C ... write out all the machine code necessary to do loops and ...
    slenkar slenkar December 2013 Development
  • FS Very early serial ZX81Sorry in advance if I have put this in the wrong section, please move if wrong! [URL="http://www.ebay.co.uk/itm/111235944876"]ZX81[/URL]

    Sorry in advance if I have put this in the wrong section, please move if wrong!

    [URL="http://www.ebay.co.uk/itm/111235944876"]ZX81[/URL]
    Macc Macc December 2013 Sales
  • IF1bis vs SpectranetSince I will shortly have access to both an IF1bis (which I've bought) and a Spectranet (thanks to a loan from cmonkey), I will be in a position to g…

    ... My hardware vs Your hardware like Apple vs Microsoft, iOS vs Android, or ... the historic Betamax vs VHS :)
    David Jones David Jones December 2013 Hardware
  • Assembly code auto optimiserFor my Finders Keepers Plus project I'm considering writing an Assembly code auto optimiser. Way back when I wrote the original FK I considered optim…

    ... like this

    [code]
    call SomeSub
    ... ret
    [/code]

    could be ... br />
    [code]
    jp SomeSub
    [/code]

    ... br />
    Example
    [code]
    ; My source
    ;< ...
    David Jones David Jones December 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…

    Hello,

    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 Spectaculator emulator on a PC.

    Thanks,

    M
    MadR13D MadR13D December 2013 Sinclair Basic
  • Get rid of 'Bytes:' when loading codeHow do you hide the 'Bytes:' when loading code? I've tried saving as CHR$ 22 + CHR$ 6+ CHR$ 0 (a blank part of the loading screen) but it still appe…

    How do you hide the 'Bytes:' when loading code?

    I've tried saving as CHR$ 22 + CHR$ 6+ CHR$ 0 (a blank part of the loading screen) but it still appears at 3,0 and disrupts my screen!
    daveysludge daveysludge December 2013 Sinclair Basic
  • Code to test if a rectangle is in a rectangle[SIZE=3][FONT=Calibri]I am looking to write some code that will check if a rectangular shape is outside or overlapping a second rectangle. If the sma…

    ... am looking to write some code that will check if a ... have concocted the following sudo code to achieve this outcome:[/FONT ... , has anyone got some Z80 code that already does this? I ...
    Mr Millside Mr Millside December 2013 Development
  • Mine CraftWould a mine craft type game be possible on a zx spectrum. Ant Attack and more to the point Zombie Zombie are already good starts. Ant attack on a …

    ... a zx81 is possible so maybe one for Bob Smith to code ... .

    Not before Zombie Zombie on the zx81 first ...
    Dazman Dazman December 2013 New game ideas
  • Maze-K for Sinclair ZX81Found this new game for the the Spectrum old brother. [URL="http://www.zonadepruebas.com/viewtopic.php?f=15&t=4646"]Maze-K for ZX81[/URL]

    Found this new game for the the Spectrum old brother.
    [URL="http://www.zonadepruebas.com/viewtopic.php?f=15&t=4646"]Maze-K for ZX81[/URL]
    hikoki hikoki December 2013 Brand new software
<1…14151617181920…34>

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