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  • New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…

    ... of a [B]GOSUB[/B] routine, it should work better for ... movement directly inside the main loop. The idea is to execute ...
    Einar Saukas Einar Saukas April 2008 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... counter intiialized, the "do-while" loop is entered, which manages the ... is modified by the interrupt routine and we need a consistent ... iteration of the do-while loop for things to work correctly ... condition for terminating the parade loop in the "while" part ...
    Alcoholics Anonymous Alcoholics Anonymous April 2008 Development
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... though, you just use a routine to block copy it to ... area. In fact, the "main loop" is a series of CALLs ...
    BloodBaz BloodBaz April 2008 Emulators
  • JSW... how does the game "finish" in assembly?It seems the ZX and C64 versions of Jet Set Willy suffer from the same "unfinishable" problem. Thankfully the ZX version has been patched with pokes …

    ... ]

    Sorry for the delay! I've failed rather miserably ... X and Y coordinates = whatever) routine that changes the toilet sprites ...
    DanSolo DanSolo May 2008 Games
  • Start Tape, Press any key...Hi, I'd like be able to save (program or data or code) using the save "whatever" command, but I want it to start recording immediately, rather than …

    ... (called by the SAVE routine at $0971) points by ... at $15AF. The input routine points to $10A8 and ... the output routine points to $09F4.
    routine - not the output routine as mentioned ... edit 3 about the delay between the header and ...
    Jimmy Jimmy May 2008 Sinclair Basic
  • RZX Player interface - Possible?If I have a Mass Storage interface and some media (CF, SD) with a couple RZX files, what would I need to play them on a real Spectrum? If the RZX fil…

    ... combination when (if) the interrupt routine is run so that the ... doesn't do its interrupt routine. Then when the RZX recording ... the data following the interrupt routine for the current frame and ... the instruction count is to delay when the z80 begins executing ...
    Alcoholics Anonymous Alcoholics Anonymous June 2008 Hardware
  • 'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…

    ... out of whack on this routine I briefly wrote - but it ... />
    ei

    ;flicker loop
    flicker
    ; Invert bit ... /> ; Check for 'q' being pressed- loop back if not
    ld ...
    Digital Prawn Digital Prawn August 2008 Sinclair Miscellaneous
  • Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…

    ... % then the emulator runs the loop in a mere 48.1 ... DEL (ASCII 127). The new routine is more accurate though as ...
    Jimmy Jimmy August 2008 Development
  • Bresenham's line algorithmHelp - I really am struggling to get my head around this algorithm. I don't know why, I coped with Cordic (SIN/COS) and integer divide routines (/10 …

    ... bit integer arithemetic, pseudocode of routine (without startup) looks like ... amp;down:
    .....
    djnz loop

    point_to_right
    ... .....
    djnz loop
    [/code]

    as ...
    Fikee Fikee September 2008 Development
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... zero. The simple FOR/NEXT loop I've been using as ... ! I admit that my keyscan routine isn't the fastest (it ...
    Jimmy Jimmy September 2008 Sinclair Miscellaneous
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... zero. The simple FOR/NEXT loop I've been using as ... ]I admit that my keyscan routine isn't the fastest (it ...
    obo obo September 2008 Sinclair Miscellaneous
  • Sinclair PC 200 - RF questionIs there any compatibility regarding the RF output of the sinclair pc 200? This week i got my 2nd unit and in both of them, when connected through R…

    ... of the first phase-locked loop (frequency).
    In VCR mode ... and there is no
    delay of frame fly-back (direct ...
    Gods Gods September 2008 Hardware
  • CSSCGC 2008 has now officially begunFor coming last in the 2007 crap game compo, I have the honour and privilege of hosting CSSCGC 2008! I have now put up the CSSCGC 2008 website at …

    ... 0 due to the LDDR loop.
    It also doesn't ... the value of HL the routine is entered with as it ... as part of the NEW routine.[/I]

    Except it ...
    Jimmy Jimmy September 2008 Games
  • BEEP conundrumFor the "CSSCGC 2008 Tape Magazine" December edition, I have decided to use a BASIC sound routine I wrote last year which plays a festive tune using …

    ... help with this BASIC sound routine.

    Certainly, without this ... scroller in the main BEEP loop. As that is quite fast ...
    Digital Prawn Digital Prawn October 2008 Development
  • Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…

    ...

    push bc ; temporary delay loop
    ld bc, $1000
    delay: dec bc
    cp b< ... br /> jr nz, delay
    pop bc ; end delay loop

    ld ...
    FrankT FrankT October 2008 Sinclair Miscellaneous
  • Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…

    ... an arbitrary full screen scroll routine much faster than about 100 ... 's with massive amounts of loop unrolling. Add the overheads for ...
    Matt_B Matt_B October 2008 Sinclair Miscellaneous
  • In-game music takes CPU time?If a 128k wants to have music played in-game using the AY sound chip, does that consume a lot of CPU time? What I am after is if the reason why man…

    ... the end of each main loop, run in IM2 which does ... the end of the main loop whilst the screen is being ... interrupt service routine or simply part of a main loop whose speed ...
    BloodBaz BloodBaz November 2008 Development
  • ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …

    [QUOTE]Here's a music routine originally written by Tim Follin ... myself, just need beeper routine and timing loop for two channels, let ...
    jp44 jp44 November 2008 Sinclair Basic
  • CSSCGC 2008 has now officially begunFor coming last in the 2007 crap game compo, I have the honour and privilege of hosting CSSCGC 2008! I have now put up the CSSCGC 2008 website at …

    ... ]I might steal your input routine.[/QUOTE]

    Yes, please ... />
    There is a longer delay between notes on the righthand ...
    Digital Prawn Digital Prawn December 2008 Games
  • Do you really want to play a new cool, interesting, but rather hard game?Just thinking about it... For example, someone will create a game. BIG game. BIG BIG game, with multiple loading scheme, numerous rewind blablabla (o…

    ... to use during the game loop. Of that memory you'll ... loop, all the graphics required, a back-buffer screen, your interrupt routine ... to ensure that your game loop, back-buffer, and blitting routines ...
    bobs bobs December 2008 Games
  • Help: OUT (port), A[deleted]

    ... , 255 ; 6,255 ; Prepare to loop 255 times
    LD A ...
    DJNZ, out1 ; 16,252 ; Delay by looping 255 times
    loop 255 times
    LD A ...
    DJNZ, out2 ; 16,252 ; Delay by looping 255 times
    Jonathan Harston Jonathan Harston December 2008 Development
  • Trouble compiling my BASIC programI've been trying to get a compiled BASIC version of Swift Turtle with no luck so far! I first tried MCoder 3 and it [i]seemed[/i] to compile the prog…

    ... "fdrtlthtstbkcspupdpeppmsrpmecmrmlmhmspehsvld"

    REM routine to find a string match ... and GO SUB to specialized routine
    98 GO ... short-circuiting the FOR-NEXT loop for string match (listed ... terminate the FOR-NEXT loop properly and then executing ...
    Arjun Arjun January 2009 Sinclair Basic
  • Keyboard routinesI'll ask here first - since this must be a long-ago solved problem, and hopefully I can avoid re-inventing the wheel... I need a keyboard routine th…

    ... key until ENTER pressed
    loop:
    CALL getkeyascii
    CALL ... /> CP $0D
    JR NZ,loop
    RET[/CODE]

    routine. If it allows "type-ahead ...
    Jimmy Jimmy January 2009 Development
  • Using INPUT without clearing last two lines of screen?I'm trying to print to the 22nd row of the screen using the ol' print #0 trick. Unfortunately, I require user INPUT which seems to wipe out the botto…

    ... ...
    .loop
    put_some_code_here
    djnz .loop
    [/ ... this many times
    .loop
    put_your_code_here
    ... inc hl
    jr .loop

    address_of_character_string ... you out of this routine. (AND A does ...
    Winston Winston January 2009 Sinclair Basic
  • Keyboard routinesI'll ask here first - since this must be a long-ago solved problem, and hopefully I can avoid re-inventing the wheel... I need a keyboard routine th…

    ... now realised that the ROM routine is actually quite good. Unfortunately ... to get a good keyboard routine. There is no other way ... one with a simple CPU delay, but the results aren't ...
    Jimmy Jimmy January 2009 Development
  • BASin r14d - Final bugfix for the r14 seriesOk, there's not a great deal to "show" here, as most of the work has been going on "under the hood" so to speak. And there's been a [i]lot[/i] of wor…

    ... no wrap
    ; Note: This routine uses AF'
    ScrollUp:
    EX AF, AF' ; Loop 191 times
    DEC A ...
    BloodBaz BloodBaz January 2009 Emulators
  • Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…

    ... timing of the main game loop was all wrong, plus the ... set up an IM2 mode routine - maybe I will use it ...
    Digital Prawn Digital Prawn January 2009 Games
  • Analogue BeeperThere's been a discussion on foro.speccy.org about multichannel beeper stuff, and since I had the camera out and the scope set up, I set about demons…

    ... correct - the more complex the routine, the smaller amplitude you can ... really simple routine, it can run fast, and the minimum delay is ... vice versa. The longer your routine takes to run, either the ...
    Winston Winston January 2009 Development
  • Playing 128k music with z88dk ?Hi, I'm amazed how easy seems to make things with z88dk to build spectrum asm programs. After my first approach I miss some way to play 128k music, s…

    ... it's own interrupt service routine and/or need to sit ... interrupt service routine or as part of your main loop, allowing you ... prefer to write your own routine that loads the AY registers ...
    Matt_B Matt_B January 2009 Development
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Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
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    Renegade on April 21
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    John Elliott on April 21
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    mel the bell on April 21
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    harriusherbartio on April 21
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    harriusherbartio on April 21
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    AndyC on April 21
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    mel the bell on April 20

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