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<1…16171819202122…34>
  • New project for 256 colours Games emulator!O.K. , I suggested Jonathan Needle ( Creator of the excellent Spectaculator at [url="http://www.Spectaculator.com"]www.Spectaculator.com[/url] ) to c…

    ... : snapshots, input recordings, debuggers and variable speed don't exist in ...
    Philip Kendall Philip Kendall April 2004 Emulators
  • Emulation or Real Thing?Having just been on ebay, I counted well over 200 Spectrum games for sale. That got me thinking, with the availability of emulation and almost every …

    I think emulation is definately the way forward. Recently variable speed has been pretty useful with some games also.

    That said one of those 128k machines with a CF card inside full of games would be nice.
    Bluce_Ree Bluce_Ree April 2004 Games
  • my 128K works again!! ;-) - HELP!!Hehehe, I wasn't able to restrain myself ;) my British black 128+ works again!! :) After 4 years!!! YESSSSSSSSSSSSSSSSSSSS!!!!!!!!!! :) [ This Me…

    ... file, I get messages:
    VARIABLE NOT FOUND 0:5
    Yerz Yerz May 2004 Sinclair Miscellaneous
  • My first attempt at Gigascreen interlacingWonderful. Did some research on the port which controls memory paging and wrote a short BASIC programme to switch pages 5 and 7 in and out of the scr…

    ... no longer square, but half width. An 8x8 attribute is also ... half width. In text mode with Amstrad ...
    secarica secarica May 2004 Development
  • VSYNC FunctionI have written a VSYNC function, so that I can clear the screen before redraw without flicker on the screen, I do this by peeking at the address 2367…

    ... and updates the frames system variable -- pure overhead from Basic. It ... ) was reading the frames system variable to see if an interrupt ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • MC 101Hello Group Members: Can't spectrum MC be embedded in a BASIC program

    ... pointed to by the system variable PROG, and add three or ...
    monty.mole monty.mole May 2004 Development
  • Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…

    ... last key pressed, the FRAMES variable, etc, which could screw up ...
    monty.mole monty.mole May 2004 Development
  • COVOX works?My Sprinter "simulates" a COVOX soundcard at port 4Fh, but I don't know how to use it! Can anyone explain to me the process of programming it? (To be…

    ... , you get square waves with variable duty cycle like the C64 ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • MC 101Hello Group Members: Can't spectrum MC be embedded in a BASIC program

    ... that by PEEKing the system variable PROG and add on offset ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • COVOX works?My Sprinter "simulates" a COVOX soundcard at port 4Fh, but I don't know how to use it! Can anyone explain to me the process of programming it? (To be…

    ... />
    Zanthrax uses a pulse width modulation technique to turn the ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Development
  • New utterly crap game!Inspired by Andy Herbert's crappy game I decided that I should try and produce a similar if not better (or worse depending on how you look at it) eff…

    ... I had to add a variable speed/difficulty routine.

    Arjun Arjun May 2004 Games
  • VariablesVariable Help: Can BASIC discriminate between odd and even variables? If so, what simple syntax can express it?

    ... even values held in a variable.

    Assuming you want ...
    choccy48K choccy48K June 2004 Sinclair Basic
  • BASIC OptimisationsOk, BASin is maturing fast and now I want to add some more special "stuff". A guy called Chris requested by email that I include a REM killer, to s…

    ... in meltdown.

    Any variable testing for zero in IF ... but if you had a variable that depended on 2 values ...
    Mr. Anonymous Mr. Anonymous June 2004 Development
  • BASIC OptimisationsOk, BASin is maturing fast and now I want to add some more special "stuff". A guy called Chris requested by email that I include a REM killer, to s…

    ... measures such things as average variable access time and line-search ...
    Dunny Dunny June 2004 Development
  • An intriguing question...Well, intriguing for me anyway. As we all know, when calling a Machine Code function from BASIC, we use the USR (address) function. But for this to …

    [quote]
    RANDOMIZE USR do nothing with it.
    [/quote]

    RANDOMIZE will set the value as seed for random numbers, in the appropiate system variable.
    Metalbrain Metalbrain June 2004 Development
  • Best scrolling everHi All - I've been lurking here for a while enjoying reminiscing about my magical 10 years of rubber-keyed fun back in my youth! What game featured …

    ... Amiga version has just one scrol plane where speccy has two ...
    judasEZT judasEZT July 2004 Games
  • Standard for Inlay ScansCan you help me find the stadard for inlay scans. I have a few which are different version than those posted. Inc DENIS THROUGH THE LOOKING GLASS …

    ... use 75dpi and a maximum width of 360 pixels. That keeps ...
    ADJB ADJB July 2004 MIA/STP/SDP
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... value in the NMIADD system variable (23728) if it was non ...
    Fraser Fraser July 2004 Development
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... Sinclair determined the int pulse width, using the smallest interrupt routine ...
    Alcoholics Anonymous Alcoholics Anonymous July 2004 Development
  • Collision DetectionHi everyone, This is my first post on WOS. Like most people here I owned a Spectrum when a teenager. At that time I was quite heavily into programmin…

    ... /> 1. the sprite width is less than the width of the screen ... 'x---x' denote the sprite width (or height).

    [code ... ) coord
    ; c = sprite's width(height)
    ; d = rectangle left ...
    Alcoholics Anonymous Alcoholics Anonymous August 2004 Development
  • Collision DetectionHi everyone, This is my first post on WOS. Like most people here I owned a Spectrum when a teenager. At that time I was quite heavily into programmin…

    ... with
    ADD A,16 ;width of sprite
    LD C ...
    dmsmith dmsmith August 2004 Development
  • TommyGun - Utility ... what's going on...For those interested, Tony has been busy lately and unable to put as much time into TG as he'd like. He also has a child on the way soon. He told me…

    ... sprite is defined by its width and height not by the ...
    Kiwi Kiwi August 2004 Development
  • Program sizeI am typing a basic program into a ZX and I need to find out exactly how much memory it is using. Is there a way to calculate this? :confused:

    ... the BASIC program and the variable area, respectively. Since, according to ...
    J?rg Pleumann J?rg Pleumann August 2004 Sinclair Miscellaneous
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... .
    I also use different width and height for each sprite ...
    moroz1999 moroz1999 August 2004 Development
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... br /> LD A,(SPRXLEN) ;get width of sprite
    DEC A ... ,0 ;IXL is counter for width of sprite

    * ... />
    DRAWSPY2 LD IXL,0 ;width of sprite again

    SPRXLEN DEFB 4 ;width of sprite
    SPRYLEN DEFB ...
    dmsmith dmsmith August 2004 Development
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... will be modified for real width of sprite... as you need ...
    Fikee Fikee August 2004 Development
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... need to determine what maximum width of sprite you will need ... . So if the maximum sprite width is 40 pixels (5 characters ... with the addresses for each width of sprite.

    The ...
    dmsmith dmsmith August 2004 Development
  • Character SetAlright, this may not be the right forum for this question (it does sort of relate to a game which I'm trying to get working properly - long story) -…

    The system variable is CHARS with low byte ...
    Geoff Geoff August 2004 Games
  • need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …

    ... ,(SPRXLEN) ;Find jump address for width of sprite
    SUB 2 ... JP (IY) ;Jump according to width of sprite
    W32A POP ... ,C ;16,24 or 32 width sprites. For wider sprites
    dmsmith dmsmith August 2004 Development
  • Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …

    ... /> ; put it back into the variable
    ld bc, 16384+4096 ...
    Erlstoned Erlstoned August 2004 Development
<1…16171819202122…34>

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