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<1…16171819202122…34>
  • Optimize this: Distance CalculationBased on a taylor series expansion, suggested by NA_TH_AN, I've got this so far, which is far far faster than SQR(X^2+y^2) Formula is: in a right an…

    ... arrives in A
    POP BC ; second parameter -> B
    SBC HL,BC ; take half our smallest from ... carry flag.
    SBC HL,BC

    SRL C
    ADD HL,BC


    END ASM ...
    Gedlion Gedlion April 2012 Development
  • Help pleeease "Proving Emulator OpCode flags are correct"So I had a cunning plan... I wanted to write a test harness for Emulators that could "prove" that all opcode flags were correct. I wanted something m…

    ... D,0 //dAddr
    PUSH BC
    POP AF
    ADC ...
    Korinel Korinel April 2012 Emulators
  • Retro Gamer Issue 102Issue 102 is hitting subscribers today. Highlights include:- 30 years of the Spectrum (including interview with our own Martijn :smile:) X-Wing Sta…

    ... Boy
    Lemmings 2
    Kid Icarus

    I guess ...
    jdanddiet jdanddiet April 2012 Chit chat
  • simplest method to pass a string to m/code?The statement "RANDOMIZE numvar+USR mc" is a simple way of passing a single numeric parameter to a m/c routine, as mc can retrieve numvar from the to…

    ... m(s$)=USR mc: LET bc=FN m(s$): whereby mc ...
    Battle Bunny Battle Bunny April 2012 Sinclair Basic
  • Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …

    ... the stack pointer
    push bc
    push de
    ... /> push af
    push bc
    push de
    ... /> pop de
    pop bc
    pop af
    ... read 16 bytes
    pop bc
    pop de
    ... /> push de
    push bc
    push af
    ...
    chev chev April 2012 Development
  • Amiga / Spectrum & Floppy to SD ConverterI'm 34 years old and grew up like many of you on the C20, Spectrums and Amigas. I'm looking at revisiting my childhood memorys and purchasing one of …

    ... ]http://lotharek.pl/products.php?kid=7[/url]

    So ...
    darkromz darkromz May 2012 Wanted
  • Open and read a file using +3DOS in MCForgive me if this has been asked and answered before, I've spent a fair few hours searching the forums and looking for books on the subject, all wit…

    ... should work calling with both BC and DE as $0001, I ...
    RobeeeJay RobeeeJay May 2012 Development
  • What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…

    ... new coordinates.

    ld bc,63486 ; keyboard row 1-5 ...
    Saboteur Saboteur May 2012 Development
  • Kickstarter for Space Quest CreatorsHi All If anyone is interested, the creators of the Sierra space quest games are doing a kickstarter for a new game. I loved the space quest games…

    ... space quest games as a kid, so it should be interesting ...
    wozname wozname May 2012 Chit chat
  • Can anyone tell me what this game is? :/Hi all, I wonder if anyone can help me? I played this game when I was a kid on my cousin's spectrum but I don't know what it was called and he doesn…

    ... game when I was a kid on my cousin's spectrum ...
    Speccy Speccy May 2012 Games
  • CMWC random number generator for Z80Seeing the interest regarding the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=23070"]Xor-Shift random number generator for Z80[/URL]…

    ... hl,table
    add hl,bc

    ld ... b

    sbc hl,bc ; t = 255 * y
    ... sbc hl,bc ; t = 254 * y
    ... sbc hl,bc ; t = 253 * y
    ... c,d
    add hl,bc ; t = 253 * y + ...
    Patrik Rak Patrik Rak June 2012 Development
  • Jelly-Vision!As threatened in the "'Spectrum Play' Error" thread, here's a ruff'n'reddy interrupt driven full screen wobbling routine which has no practical use w…

    ... /> jr z,INSCROLL
    push bc
    push de[/color]
    xor 1
    ld bc,6144-256
    jr nz ... /> MOVEDONE: pop de
    pop bc
    INSCROLL: pop hl
    Battle Bunny Battle Bunny June 2012 Sinclair Basic
  • The Incredible Hulk storyboard 'game'Hello folks. After reading the thread about comics with games I was reminded of a 'game' I used to have as a kid. Memory is a bit hazy but here's wha…

    ... used to have as a kid. Memory is a bit hazy ...
    Maroc's Astral Projection Maroc's Astral Projection June 2012 Chit chat
  • I bastardise your genres!My Album! I was serious I have the music for at least 3 tracks, I've screamed and hoo haaa'd along to them all, but when it came recording them I re…

    ... ).
    Hard done by rich kid.
    Contemporary Religious Pornography (what ...
    dm_boozefreek dm_boozefreek July 2012 Chit chat
  • Best management gamesFar too many to choose from here so what are peoples favourites? Been messing with Boxing Manager and the Football Director games. Well worth some t…

    ... related.

    As a kid I used to play a ...
    Lorfarius Lorfarius July 2012 Games
  • apiburfdee MaccHappy Birthday kid

    Happy Birthday kid
    BiNMaN BiNMaN July 2012 Chit chat
  • Happy Birthday Commodore 64.Happy birthday to the slightly younger, tubby kid from America. [url]http://www.bbc.co.uk/news/technology-19055707[/url]

    Happy birthday to the slightly younger, tubby kid from America.

    [url]http://www.bbc.co.uk/news/technology-19055707[/url]
    murtceps murtceps August 2012 Chit chat
  • Interview with Steve Wetherill (Odin)Hi you all!!! Here is the interview done to STEVE WETHERILL (Nodes of Yesod, Robin of The Wood, Arc of Yesod, Heartland... ?Odin!) and published at […

    ... around Loxley woods as a kid - so the material was very ...
    jmvbok jmvbok August 2012 Sinclair Miscellaneous
  • Best books & Sugested reading..Hi i was trying to search the forum but couldnt find it. Looking at WOS there is a number of books on BASIC, programming, machine code ect.. I mess…

    ... break i was only a kid haha...) back in the 80s ... happy. since I was a kid i always wanted to do ... a point but to a kid I have to admit that ...
    WibbleBibble WibbleBibble August 2012 Sinclair Basic
  • real value of some of these books as learning aids?Ok, I admit perhaps it was a late night and frustration. :???: I could have been hallucinating when i was doing the typein. But I think not.. [url]…

    ... magazines i remembered as a kid that were full of mistakes ...
    WibbleBibble WibbleBibble August 2012 Sinclair Basic
  • Hep needed with a bit of code...I've written a bit of code to make a character move across the screen, but the counter stops at 29 when the 3 lines to delete the characters trail ar…

    ...
    call 5633
    ld bc, 10
    ld de, 63290 ...
    daveysludge daveysludge August 2012 Development
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... /> djnz nextshiftline
    pop bc
    djnz nextshift
    ... /> djnz nextovershiftline
    pop bc
    djnz nextovershift
    ...
    uglifruit uglifruit August 2012 Development
  • c64 game with helicopter.i briefly saw it at a house of a friend's friend when i was a kid. the view was top down. the scrolling was probably multi-lateral. it wasn't simpl…

    ... friend when i was a kid.

    the view was ...
    WhenIWasCruel WhenIWasCruel August 2012 Chit chat
  • PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…

    ... text to print)
    ld bc, (length of text to print ...
    daveysludge daveysludge August 2012 Development
  • Finding an AdCan anyone suggest the quickest way to find an Ad in Your Sinclair? I remember as a kid I put an ad in the classified things in the back of your sinc…

    ... Sinclair? I remember as a kid I put an ad in ...
    scunny scunny August 2012 Games
  • merging bytesPicturing three bytes with their bits identified by letters to make the visualisation easier, what's the best way to perform this transformation? [co…

    ... af ;A=ABCDEFGH
    ld bc,(COORDS) ;eg.B(y)=50 ... , C(x)=11; BC=$320B
    call $22aa ;PIXEL_ADD ...
    Battle Bunny Battle Bunny August 2012 Development
  • next pixelI searched the "Discussions" groups for the phrase "next pixel" and got no matches - and removing the quotes it discards the "next" and just searches…

    ... /> ld de,$4000
    ld bc,0

    pixrow: ld ... /> ld l,e
    push bc
    sla b
    sla ... c
    add hl,bc
    pop bc
    jr pixrow
    Battle Bunny Battle Bunny September 2012 Development
  • Myth - History in the Making (Sound..??)New to this forum (but not to speccy ownership!!) and have just been given a game I never owned as a kid all those years ago... Myth - History in the…

    ... I never owned as a kid all those years ago... Myth ...
    band_6 band_6 September 2012 Games
  • "Alright Arrrrrrr kid?"[url=http://www.theregister.co.uk/2012/09/17/piracy_research/]Manchester is 'PIRATE CAPITAL of the UK'[/url], apparently.

    [url=http://www.theregister.co.uk/2012/09/17/piracy_research/]Manchester is 'PIRATE CAPITAL of the UK'[/url], apparently.
    ccowley ccowley September 2012 Chit chat
  • think i have a HerniaI hope I do, cuz I want a definite diagnosis, nit a vague "erm". Had one when iwad a kid, had horrendous keloid scar from op, then plastic surgery o…

    ... /> Had one when iwad a kid, had horrendous keloid scar from ...
    thx1138 thx1138 September 2012 Chit chat
<1…16171819202122…34>

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