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<1…18192021222324…34>
  • 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…

    ... ) If I were to write code to emulate screen I would ...
    tstih tstih October 2019 Development
  • Multi-Platform Arcade Game DesignerFirst of all, I should say Hello, having left the Spectrum scene around a year ago. I'm not planning to make a return but figured that I have some n…

    ... in Windows editors, write your code in AGD script using Notepad ... to generate much of the code for you. This will ... will auto-generate the code for a control menu too, including redefinable ... you can write more sophisticated code. There is a user particle ...
    jonathan jonathan October 2019 Development
  • Currah uSpeech ROM Paging and BootyHi, When I emulated the Currah uSpeech for [url="http://www.inkland.org.uk/inkspector"]InkSpector2[/url], I made it page in its own ROM on memory …

    ... uSpeech ROM is this Booty code at address $e058 ( ... at $df13, the following code is executed which I ... happens to be true, control is then passed to address ... final line above and control is finally passed to ... the hidden game set up code happens to live.
    inky inky October 2019 Hardware
  • 2xBooks: Assembly Language For Arcade Games & Machine Code Sprites And GraphicsI'm looking for the following two books to help my machine code game programming: 1) Assembly Language For Arcade Games and Other Fast Spectrum Prog…

    ... books to help my machine code game programming:
    1) Assembly ... Stuart Nicholls
    2) Machine Code Sprites And Graphics For The ...
    LevelUp LevelUp November 2019 Wanted
  • ZEsarUX 8.1 stableHi! I've uploaded a new ZEsarUX 8.1 stable version. Go to the github released webpage to download it: https://github.com/chernandezba/zesaru…

    ... ZRCP commands:
    -cpu-code-coverage: working with code coverage
    -cpu ... /> -added tbblue register 69H: display control 1 register
    -added tbblue ... menu

    -Splitted source code repository: now extras folder has ...
    chernandezba chernandezba February 2020 Emulators
  • im having problems stripping the database out of this code for quill adventure writerim trying to get the database out of rouge midget. ive managed to do this with another game written using quill but this one is too big. theres no…

    ... to remove some of the code in the last game to ... trying to load the "rmidget" code file.
    digital digital April 2020 Assembler
  • how do i set this code up, so i can print more than one line of text?well i got it working but how do i set this code up, so i can print more than one line of text? with a loop or something? not sure where to start on …

    ... how do i set this code up, so i can print ... , or using completely different code

    [code]org 40000
    ld ... 21, 0, 20, 0
    [/code]
    digital digital June 2020 Assembler
  • this code wont give me a random starfieldim using a peice of code that ive copied from a book, ignore most of it as it is redundant. for some reason i get a strange random starfield instead …

    ... one.

    [code]main
    org 40000;
    code.
    rst 16
    ... ld a,144 ; ASCII code for User Defined Graphic 'A ... 60,60,60 ; mushroom.
    [/code]


    ... look at the peice of code ''this is the bit ...
    digital digital July 2020 Assembler
  • printing text on HP-GL plotters through RS232 on AY-3-8912Hello, i don't know, if anyone is even interested in these things. But i do. I like printers, plotters and other devices which we can connected to…

    ... be received too. See source code here https://cygnus.speccy.cz ... RTS / CTS HW data flow control. But it is simple switch ... parameters.

    Enjoy. Source code is of course available. Feel ...
    cygnus cygnus August 2020 Software
  • How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…

    ... is easier written in machine code.



    ... C) Adding Keyboard control[/b]

    [code]
    400 LET ... INKEY$="a")-(INKEY$="q")
    [/code]

    Yes, ... add the following code here:

    [code]
    700 ...
    Timmy Timmy September 2020 Development
  • Computer Haiku (converted from C64)[url=https://archive.org/details/Computer_Haiku_1983_CES]Here's the original C64/PET program - "Computer Haiku" by Commodore Educational Software, 19…

    ... />
    Most of the original code was discarded as the Bread ... of system variables, POKEs and control characters instead - so the title ... colours. More system variables and control characters had to be worked ...
    The Mighty Dopethrone The Mighty Dopethrone September 2020 Sinclair Basic
  • CODE instruction in array$ PRINTSo I'm still plugging away at BASIC and have found a line of code (another!) that's really puzzling me. The line is as follows: PRINT A$(P+Q TO P…

    ... have found a line of code (another!) that's really ... $(P+Q TO P+R+CODE A$(P+T)),
    ... /> So as I understand the code line, it reads:
    ... br /> However, there's a CODE instruction in there and I ... I am misundertanding how the CODE instruction works or I' ...
    LevelUp LevelUp October 2020 BASIC
  • Elon Musks's Blastar (Conversion)Back in 1984, the 12 year old Elon Musk wrote a rudimentary video game for his SpectraVideo SV-328 (another Z80 Microcomputer) [url="https://www.t…

    ... periodic calls to the game code. In reality, that kind of ... fixed an issue in his code whereby the STATUS BEAM that ...
    Snial Snial November 2020 Sinclair Basic
  • Prefered Tools for Developing Maching Code in 2021I am considering this year to fulfill my goal of actually writing machine code programs for the ZX Spectrum. I am an accomplished object oriented cod…

    ... goal of actually writing machine code programs for the ZX Spectrum ...
    Scottie_uk Scottie_uk January 2021 Assembler
  • Last Problem in Chapter 3 of Toni Baker's Mastering Machine Code on your ZX Spectrum.Chapter 3 of this great book is all about how to use the registers and covers the operations LD, ADD, ADC, SUB, SBC, INC, DEC, SCF and CCF. The la…

    ... would be appeciated.

    [code]Op Hex Notes
    LD ... C9 Return to basic
    [/code]
    Scottie_uk Scottie_uk February 2021 Assembler
  • OqtaDrive - Microdrive emulator for Spectrum & QLQuite a while ago I reported about my [url="https://worldofspectrum.org/forums/discussion/55983/yet-another-microdrive-emulator#latest"]first prototy…

    ... this API and let you control the daemon, e.g. load ... more technical information and the code, head over to the GitHub ...
    xelalex xelalex May 2021 Hardware
  • Did you know that OBD II Code Readers can be bought new very cheaply?I got mine before Covid struck and the cheapest one was about £10 .Most cars built after about 1997 have an OBD II port hidden away usually under th…

    ... up your car and the code tells where the fault is ... mostly from China) . The cheaper Code Readers are very basic and ...
    harriusherbartio harriusherbartio August 2021 Chit chat
  • Killed Until Dead - Spectrum 128K versionI first got hold of this game about the same time as the film "Clue" started being shown on TV, and there was a "Miss Marple" series on TV, followed …

    ... in memory and some operating code at $5b00.
    2. ... Running the intro code copies an appropriate input routine ... the following.
    * The intro code can be relocated to $F000 ... code will get overwritten by the main game, but the control ...
    Ritchie333 Ritchie333 August 2021 Assembler
  • How do you publish your Z80 code online?I'm starting a blog about my pet project. One of the requirements is to publish explanatory Z80 code. What tools do you use for syntax highlighting? …

    ... is to publish explanatory Z80 code. What tools do you use ... I can feed raw Z80 code with and it does formatting ... 'm not afraid to write code for that). Perhaps even a ... that require me to feed code into editor and convert it ...
    tstih tstih December 2021 Development
  • Badly written arcade games?A thought came to me earlier when reading the thread discussing retro consoles.... Back in the 80s arcade conversions were all the rage, but they …

    ... substandard developers who wrote shoddy code which clearly wasn't up ... it ever get past quality control and how did it get ...
    Gwyn Gwyn February 2022 Chit chat
  • De zeven sleutels van TARKUSI've decided to type in the game "De zeven sleutels van TARKUS" from a book I have for many years now. And, it seems the game as it was printed in…

    ... good maze game!

    [code]
    1 REM De zeven ...
    Timmy Timmy August 2022 Sinclair Basic
  • Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…

    ... error in my snapshot loading code, which took care of most ... . adding a more precise timing control, taking the slower memory into ... (i.e. the source code) has implemented code to be able to ... will be released with source code and everything.

    / ...
    Anders Anders September 2001 Emulators
  • A DOS question, slightly OTI have an old laptop (a P75) which is great for Spectrum emulation (X128 ), and C64 emulation (CCS64), and I want to emulate the Atari ST, too. Now, …

    ... 1/50
    sec. If control-key pressed, make it look ... like other control key pressed.

    The ... for keycode of CONTROL and replace it with other CONTROL-code (if possible ...
    Dr BEEP Dr BEEP September 2001 Emulators
  • speccy soundI know this sounds a bit vauge but can anyone explain to me why the music on some 48K games was so amazing and so much better than the usual beeper s…

    ... and execute this bit of code first. Interupts are popular for ... by the beeper is amplitude control (or volume). You see the ...
    cyborg cyborg November 2001 Sinclair Miscellaneous
  • Hook CodesIf you've dug into the Interface 1 this should be an easy question. I last had 'em circa 1990 while I can remember the things they did Start Motor C…

    ... .


    HOOK CODE SUMMARY
    =================

    ... br /> function.

    Code Name ROM1 ROM2 ROM3 Function ... PRINT 19EC 1EE0 1EE2 print CHR$ A on system stream ... LPRINT 19FC 1EF0 1EF2 print CHR$ A on stream 3 ...
    Geoff Geoff February 2001 Sinclair Miscellaneous
  • Internet enabled SpectrumHi, I'm sure this isn't new but I plan to make an Internet-enabled Speccy capable of serving up pages using a TCP/IP hardware stack (I just did this…

    ... lines (8 address/data, 3 control) to drive the TCP/IP ... productive in C and the code would also be more reliable ... compiler that allows relocation of code.

    Cheers for the ...
    Dan Dan May 2001 Sales
<1…18192021222324…34>

Latest Posts

  • Minor British Sports that did become games on the ZX Spectrum
    dmsmith on April 22
  • I bought an accoustic guitar. How do you play it?
    Maroc's Other Projection on April 22
  • Goodbye Z80
    moggy on April 22
  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on April 22
  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on April 22
  • I am currently watching.....
    Antiriad2097 on April 22
  • European Software Titles with an English version
    harriusherbartio on April 22
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on April 22
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on April 22
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

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