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<1…13141516171819…34>
  • When do you optimise?I was just wondering when people here optimise their code. Do they wait till it is all done or do they code a routine and then optimise that?

    ... 't speed up a slow routine if it could be rewritten ... optimised it all I can short of a complete rewrite.
    Dunny Dunny May 2006 Development
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... onto the generic loop-shortcut routine. If not, check the ... a particularly funky keyboard reading routine.

    This method ... recognises loaders with one intelligent routine. If I can get marko ... , you'll need one routine for each loader so it gets very ...
    Dunny Dunny May 2006 Emulators
  • files on +3 discHello! I have question. As you know, when Spectrum +3 loads CODE file from tape, you can get by CAT command from audio header to which address it…

    ... come to save the BASIC loader, it's best to use ... if the filename in the loader BASIC does not match the ... don't mind waiting a short while, I'll even "do ...
    DEATH DEATH May 2006 Sinclair Miscellaneous
  • Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…

    ... is move the entire loading routine from the ROM into high ... once sent me such a routine and I don't recall ... big. Of course, the moved routine takes up a bit of ... .[/QUOTE]

    The Players loader being a good example. The ...
    Code Monkey Code Monkey May 2006 Games
  • Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…

    ... . This later became the Search loader (Deflektor, Costa Capers) etc which ... that by copying the ROM loader and patching it. Incidentally, ... (from a hacking perspective) the loader he demo'd with Glider ... the counter but yeah, the routine itself was as small as ...
    JonNorth JonNorth May 2006 Games
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... generate a maskable interrupt. In short, interrupts are a means for ... called by the z80. In short, I*256 points at a ... /> [*] The Basic system's interrupt routine at 0x38 takes at least ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • OpenZXRom v2006-05-17 releasedJust knocked out a new release of OpenZXRom last night - a GPL licensed functional replacement for the original Spectrum ROM. [url]http://matt.west.…

    ... out to be just a short leap that's worth taking ... a case of sticking that routine in and forgetting about it ...
    gasman gasman June 2006 Development
  • compilerI am currently developing a sudoku game for the old faithful speccy. My idea is to write the code in basic and then compile it to m/c because i suck …

    ... uses ROM routine

    well, you could write few short benchmarks ...
    Fikee Fikee June 2006 Development
  • Trying to experience nostalgia!! Mp3s needed!!!I've been trying to get audio files (mp3 or wav) to work on my real old sinclair 48k. I've tried making them from my old tapes of which I have many, …

    ... then a section after. In short, we measure the pause before ... clarification from a load/save routine may get us timing accurate ...
    Andrew Barker Andrew Barker August 2006 Games
  • Spectaculator QuestionsI've been messing around with this great emulator, and was surprised how easy it was for me to load a game from minidisc into Spectaculator as if it …

    ... has just half a Speedlock loader and generates a tape loading ... to patch in the *old* routine, which he appears to have ... SPIN.

    The older routine is complete, and should save ...
    Marko Marko August 2006 Emulators
  • Spectaculator QuestionsI've been messing around with this great emulator, and was surprised how easy it was for me to load a game from minidisc into Spectaculator as if it …

    ... make version via standard ROM loader routines.[/QUOTE]

    SPIN ... the rom loader (without any pilot) to overwrite the loading routine itself ...
    Marko Marko August 2006 Emulators
  • Spectaculator QuestionsI've been messing around with this great emulator, and was surprised how easy it was for me to load a game from minidisc into Spectaculator as if it …

    ... the rom loader (without any pilot) to overwrite the loading routine itself ...
    piters piters August 2006 Emulators
  • How to speed up TZX loading (emu development)With many newer emulators there are options to do faster loading schemes, even for turbo-loader or protected loader blocks in TZX files. For example,…

    ... s how the generic edge routine in SPIN works.
    ... be part of an edge routine, these are:

    ... . If the edge testing routine is called again, at ... the the speccy's routine has looped again even ... detected as an edge loader since adding that extra ...
    Marko Marko August 2006 Emulators
  • TAP conversion project?I was wondering if there's any concerted effort to produce TAP versions of games only available in TZX or Z80/SNA/SLT format? Or are snapshots consid…

    ... a copy of the ROM loader so RealSpectrum's TAP acceleration ... you patch the loader code to use the ROM routine instead (change ...
    StuBruise StuBruise September 2006 Games
  • TAP conversion project?I was wondering if there's any concerted effort to produce TAP versions of games only available in TZX or Z80/SNA/SLT format? Or are snapshots consid…

    ... convert the game itself into "loader, screen$, code blocks" format ( ... confident about hacking the multiload routine to use headered files. In ... in memory that the Erbe loader originally used, so if that ... counts as a ROM loader (for the purposes of running ...
    StuBruise StuBruise September 2006 Games
  • TAP conversion project?I was wondering if there's any concerted effort to produce TAP versions of games only available in TZX or Z80/SNA/SLT format? Or are snapshots consid…

    ... it looks like the save routine wrapped around after $9500 bytes ... safe to assume that this routine is setting the current page ... loading screen. It calls a routine at $8372 which you will ... successfully removed the custom loader! The actual loader in the TAP file ...
    StuBruise StuBruise September 2006 Games
  • Delay routine requiredI'm putting together a short routine to play some Beep style music. I need to be able to pause between notes when required. These pauses are defined …

    ... ]I'm putting together a short routine to play some Beep style ... milliseconds. I'm after a routine that will allow me to ...
    Matt_B Matt_B September 2006 Development
  • Delay routine requiredI'm putting together a short routine to play some Beep style music. I need to be able to pause between notes when required. These pauses are defined …

    ... ]I'm putting together a short routine to play some Beep style ... milliseconds. I'm after a routine that will allow me to ...
    bobs bobs September 2006 Development
  • Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…

    My favourite was hitting the loading routine at a particular place:

    RANDOMIZE USR 1331

    (if you wanna see a pink loader!)
    Not really a crash though as it returns to BASIC.
    BloodBaz BloodBaz October 2006 Sinclair Basic
  • How to save TZXGreetings to all. I am starting to move on from just games into some testing of home made programs. Although I could have done that in ancient tapes…

    ... is to write a small loader which loads the machine code ... assembly) uses the ROM load routine to load a SCREEN$ ... elsewhere for 128K models)
    loader:
    ld ix,16384 ; ... 1366 ; Run load routine in ROM
    jr nc, loader ; If error ...
    BloodBaz BloodBaz October 2006 Emulators
  • Print routine for BASIC (or BASin)For anyone interested there's a crappy binary here to print characters from BASIC at pixel positions. Import the binary at 60000, USR 60000 to initia…

    ... better off with a short m/c routine that scrolls a character ...
    gasman gasman October 2006 Sinclair Basic
  • Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…

    ... be done with a short machine code routine, but that way is ...
    NotFound NotFound November 2006 Sinclair Basic
  • External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…

    ... 's tape loader, such as Manchester encoding (with very short pilot tones ...
    Winston Winston November 2006 Hardware
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... we have marko's universal loader, which doesn't do any ... all - it examines the loader to see what it [i ... ) for others. If a loader cannot be fastloaded, it reverts ... key.

    The loader that edge mode can't ... needs to refine the edge routine a little. I'll ...
    Dunny Dunny November 2006 Emulators
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... [LIST]
    [*]Bypasses the ROM loader completely, if called, by just ... see what they do and short circuits all the delay loops ...
    Jon Needle Jon Needle November 2006 Emulators
  • Help where do i startIm thinking of writing a game or two for the speccy. At the moment Im not sure what type. But Im after some general info. I know laguages like Basi…

    ... 16384 - you can write a short BASIC program to poke values ... name) contained an assembly language routine for locating the first byte ... cell. It's a useful routine to understand to know how ...
    Winston Winston November 2006 Development
  • Scrolling Loader CounterPlease can someone help me with writing a scrolling counter for a loading system. I like the Hewson counter so i`ve taken the font from zynaps loade…

    ... just hack the Hewson loader, made a loader with 4 colour counter ... I can make the loading routine turbo x2 speed.
    FrankT FrankT November 2006 Development
  • Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…

    ... to place a machine code loader in front so basic doesn ... does not include the interrupt routine that must call the player ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Games
  • Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…

    ... keyboard to the pcb is short and becomes brittle with age ... that. What is this interrupt routine to load the songs? We ... quite :-) The output is a short machine code program with song ... so on. An interrupt service routine can do that for you ...
    Alcoholics Anonymous Alcoholics Anonymous November 2006 Games
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Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • European Software Titles with an English version
    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

HitBox

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