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<1…12131415161718…34>
  • "Jumping Jack" on Kempston Joystick.Hello. I'm new here, so at start I want to welcome everybody :) I'm totally newbie in ZX Spectrum. But I'm still own Timex without cassete player (I …

    ... time ago under RealSpec showed code there. But it also require ... only three lives, incrasing hole level after fall etc are not ... Kempston. I know ASM source code of that game exists, but ...
    olesio olesio June 2013 Games
  • Machine code assistance please #1Dear all, Learning the ropes here, so please excuse these odd questions which may seem simplistic to you learned lot. This routine is placed at 33…

    ... it gives me 32867.
    [code]
    ld l,155
    ret
    [/code]

    When I add ... the beginning, the following...
    [code]
    ld hl,0
    ld bc,0
    [/code]
    ...it seems to work ...
    Tobo Tobo June 2013 Sinclair Miscellaneous
  • Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…

    ... 't work anyway!)

    [CODE]org 30000
    ld b ... ld hl,51993 ;address energy level is stored
    dec (hl ... ) ;decrease energy level(5 times in loop)
    level
    ld b,18
    pop bc
    ret[/CODE]
    daveysludge daveysludge July 2013 Development
  • Loft clear out = reunited with specify games - please help meHi all, I was wondering if someone could help me please? My mum recently downsized and I discovered all my old spectrum games hiding in the loft! Br…

    ... )
    The worm in paradise (level 9)
    Jack the nipper ... /> Monty is innocent

    Code masters:
    Fantasy world dizzy ...
    Dizzy Linds Dizzy Linds July 2013 Sales
  • SE Basic IV 4.1 Buffy previewSE Basic IV 4.0 Anya was released back in December 2012. You can read about it here: [url]http://cheveron.github.io/sebasic4/[/url] But here's some …

    ... (v4.0) retains a high level of compatibility but moves the ... own dialect of BASIC. The code has been completely refactored and ... than 10,000 lines of code to comment. I am hoping ...
    chev chev July 2013 Sinclair Basic
  • Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…

    ... , 0 ;
    call DOS_READ ;read level

    ld b, ... ram once the level is loaded:

    [CODE]org 48641

    cp 6 ;compare level ID
    ld (levid), a ;stores level ID
    ld (oldstack), sp ...
    BCH BCH July 2013 Games
  • Cobra (improved again BUGFIX)This is an improved BUGFIX for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0000996"]Cobra[/URL], that works better than the fix curre…

    ... level without any enemies. Fixed using the following patch:
    [CODE ... ; 195 106 149
    [/CODE]
    [/LIST]
    Bugfix provided ... /> 9607: ret
    [/CODE]
    The Hit Squad re ...
    9607: ret
    [/CODE][/LIST]

    Modified ...
    Einar Saukas Einar Saukas July 2013 Infoseek database
  • 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
  • Routine for Currah speechI'm currently writing a routine for the Currah that will provide speech during a game. A timer is set to initiate the speech every 50 cycles of the …

    ... to be cycled each level i.e. level 1 would utilise allophone ... sets 1-5, level 2 allophone set 2-6 ... new piece of speech each level as you progress.
    ... can help?

    [CODE]org 40000
    ld a ... /> tim2 defb 0 ;timer2[/CODE]
    daveysludge daveysludge 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
  • 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
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... />
    E.g. a compressed level is loaded in bank 3 ... with the help of some code snippets found on this forum ...
    Alessandro Grussu Alessandro Grussu 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
  • New game: JanosikI have a pleasure to announce my new game: Janosik In case if you wondered, Janosik (spelled Yanoseek in English) is a mountain folk hero,very popul…

    ... idea from them but the code, level design and 90% of graphics ...
    Ralf Ralf September 2013 Brand new software
  • ANN: Tipshop updated Thursday, 03 October 2013Thursday 03 October 2013 Still a bit light on maps this month because of Martijn's sabatical, but still lots of good stuff (if a few days late. Cough…

    ... - 24 isn't the last level. Speaking of which, Mark Szeliga ... level 25!

    * Nyuzga provided POKEs for ABYDOS, Movie and Uridium ...
    hackersanon hackersanon October 2013 Announcements
  • Super Wonder Boy in Monster Land (BUGFIX)Please add the following "known errors" description for [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0005053"]Super Wonder Boy in Monster L…

    ... dragon (in level 11) was frozen. Apparently this code was left unfinished ... .
    [*] When falling down through hole in level ...
    Einar Saukas Einar Saukas October 2013 Infoseek database
  • 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
  • Another way to add audio input on a +2 - No more low level sound problem !Hi all, Last week, with 3 friends, we participated to a modelism / games / hobbies meeting, and we made a retro computing stand... (big succes, I'll…

    ... the sound at its max level, and playing with the ... is always at the good level (I put the iPod ... the 2nd or 3rd volume level, and even at an ... higher level, the sound stays at ... works flawlessly, no more low level sound problems, mp3 are perfectly ...
    bugpat bugpat November 2013 Hardware
  • Simple memory transfer routineI'm looking for a simple memory transfer routine that shifts 32 bytes of data from the address HL is set to 55143, I have tried using LDIR, but cant …

    ... ...

    [CODE]org 57000
    ld a,(51990) ;level number
    level x 32
    ld de ... /> ldir ;load 32 bytes from level x 32 to 55143
    defb 216 ; 216 t[/CODE]
    daveysludge daveysludge November 2013 Development
  • 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
  • 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
  • Code analysis on SNA filesI was wondering if anybody has attempted to convert all TZX/TAP files into SNA files? I would prefer SNA files as they're easy to use and search from…

    ... /> Basically the first bit of code analysis I've been doing ...
    Jimmy Jimmy January 2014 Development
  • About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…

    ... ;
    unsigned char *script;[/code]

    If ... for example:

    [code] script_result = 6;
    script_something_done = ... = 8;
    script = 9;[/code]

    I can see ... looking at the generated code:

    [code]ld A, $ ...
    na_th_an na_th_an January 2014 Development
<1…12131415161718…34>

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