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<1234567…34>
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... d,a

    ; eliminate leading zero bits

    loop_00:
    leading 0 bit of the ... has at least two more leading zeroes than the larger one ... c,h

    ; eliminate leading zero bits

    loop_00:
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…

    Hi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker but, in the end - I just learned how to use Soundtracker anyway (Thanks to ZXF for those tutorials!).
    RetroPhase2014 RetroPhase2014 December 2015 Sinclair Basic
  • i want to start writing my own gamesi want to start writing my own games but have no idea how. is there any downloadable dummys guides or some software that teaches u how. the only expe…

    ... a prefix or a suffix (+leading zero for A-F at the ...
    Metalbrain Metalbrain February 2004 Development
  • Starting on machine code - BASIC first?Howdy. If I wanted to start learning machine code for the speccy, from scratch, would you recommend I learn BASIC first or is it entirely possible to…

    ... is bogus, of course. Besides, leading zero is explicitly not to be ...
    Patrik Rak Patrik Rak November 2007 Development
  • Speccy Tour 2009.Hi All The voting for which games we'll be playing in the Speccy Tour 2009 have begun. Also, for the very first time ever, there'll be a Bounty on …

    ... .3 does not recognise the leading zero, or rather it does but ... have to manually add the zero each time? Hopefully not :)
    Bandit Bandit November 2009 Games
  • Speccy Tour 2009.Hi All The voting for which games we'll be playing in the Speccy Tour 2009 have begun. Also, for the very first time ever, there'll be a Bounty on …

    ... .3 does not recognise the leading zero, or rather it does but ... have to manually add the zero each time? Hopefully not :)[/QUOTE ...
    Frankie Frankie November 2009 Games
  • A couple of maths questions (theory, not application)1. Some bloke has worked out the value of PI to nearly 2.7 trillion digits, according to: [URL]http://news.bbc.co.uk/1/hi/technology/8442255.stm[/UR…

    ... in full and use a leading zero for months/days that are ...
    joefish joefish January 2010 Chit chat
  • upload sweep stakesso how many inlays etc did I upload the past few days ? not sure myself.. but it's gotta be between 1-50... (clue , it's not 1 ;) ) so have a guess…

    [QUOTE=thx1138;527585]010101011[/QUOTE]

    why the leading zero , in multiples of at least 2 thanks :)

    171 ?

    10+ 11 ? = 21
    fog fog April 2011 Chit chat
  • New Tomb Raider trailer[url]http://www.tombraider.com/[/url] Whaddaya think? For me... Oh dear. Just as they get the franchise back on track, they go and do this to it. …

    ... 't think it liked the leading zero on my month of birth ...
    monty.mole monty.mole June 2011 Chit chat
  • The curious case of the vanishing zerosRight, I'm back for more help guys This time I think I've figured out the code ok....but still it fails - well it works but only once... Basically …

    ... of the Vanishing Columns, the leading zero in binary shouldn't really ...
    Arjun Arjun January 2012 Sinclair Basic
  • The curious case of the vanishing zerosRight, I'm back for more help guys This time I think I've figured out the code ok....but still it fails - well it works but only once... Basically …

    ... of the Vanishing Columns, the leading zero in binary shouldn't really ... figured it might be a leading zero thing initially but the 1 ...
    Wookiee Wookiee January 2012 Sinclair Basic
  • number padding functionI wrote a number padding function in BASIC a while ago, but when I came to want it again I couldn't find it, so I've done this enhanced [url=http://w…

    ...
    inc hl ;skip a leading zero

    NEXTINT:ld c ...
    Battle Bunny Battle Bunny May 2012 Sinclair Basic
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... '1' for match
    all leading zero bits in offset until and ... raw bit stream
    all leading zero bits in length until and ...
    catmeows catmeows January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... '1' for match
    all leading zero bits in offset until and ... raw bit stream
    all leading zero bits in length until and ... ] if literals were marked with zero, and sequences with one, this ... with one, and sequences with zero, this would be the percentage ...
    Einar Saukas Einar Saukas January 2013 Brand new software
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... ld c, 255 ; signal leading zero

    org 0x2ea1 ... not zero
    dec c ; leading
    inc c ; zero?
    leading zero
    inc (iy + _mem_5_1) ... 9 ; nine digits excluding leading zeros?
    jr c, ...
    chev chev October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ...
    xor a ; clear zero
    inc a ; and ... /> call stk_st_0 ; stack with leading zero
    rst get_char ; get ... jr z, i_carry ; jump if zero
    pop hl ; limit ...
    or b ; for zero
    ret z ; return ...
    chev chev October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... increment
    or h ; zero?
    jr z, renum_error ; ... unstack address of first non-zero
    pop bc ; ... b, 4 ; skip four leading zeros
    pop hl ; ... character
    cp '0' ; leading zero?
    ret nz ; return if ...
    chev chev October 2013 Development
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... . Both test multiplicands / dividends for leading zero bits to make use of ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
  • Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…

    ... compile time options (unroll loops, leading zero elimination, etc). I don't ...
    Alcoholics Anonymous Alcoholics Anonymous June 2014 Sinclair Basic
  • fixed point mathsI came across this site which is quite interesting [URL="http://z80-heaven.wikidot.com/advanced-math#toc18"]http://z80-heaven.wikidot.com/advanced-ma…

    ... .

    With loop unrolling, leading zero elimination and reduction in operand ...
    Alcoholics Anonymous Alcoholics Anonymous July 2014 Development
  • Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…

    ... byte of the divisor is zero so go to 32 by ... is doing a bit of leading zero bit elimination but I'm ...
    Alcoholics Anonymous Alcoholics Anonymous November 2015 Development
  • Fixed point math lib?Is there a liberally licensed fixed point math lib for z80 somewhere? When searching, I expected to find a bunch of GPL'd ones and perhaps one or two…

    ... an unrolled multiply can do leading zero bit elimination.

    It ...
    Alcoholics Anonymous Alcoholics Anonymous December 2015 Development
  • Zero magazine scans/mags available?Hello. Offtopic for a Spectrum forum I know but does anyone (Mort! ?) have scans available for the Zero series of magazines? It was the old Dennis P…

    ... ! ?) have scans available for the Zero series of magazines? It was ...
    JonNorth JonNorth January 2006 Sinclair Miscellaneous
  • 'Ground Force Zero'This is very spooky...I've just been going through some of the Spectrum games we got in recently and have come across one called: Ground Force Zero. …

    ... across one called: Ground Force Zero.

    The cover shows ...
    doodleatic doodleatic September 2008 Games
  • What nice low (or zero) fat/sugar drinks are there?What drinks that are low (or zero) in fat and sugar do you like, and would you recommend? Any diet versions of soft drinks, or natural fruit drinks,…

    ... drinks that are low (or zero) in fat and sugar do ...
    ewgf ewgf July 2009 Chit chat
  • Spin Assembler DirectivesLeading on from [URL="http://www.worldofspectrum.org/forums/showpost.php?p=402514&postcount=65"]jp's recent post in Spin 0.7 Public Testing thread[/U…

    Leading on from [URL="http://www. ... until 'address mod n' is zero.

    [B]DB:[/B ...
    RoseCotton RoseCotton November 2009 Emulators
  • Sgt. Helmet Zero - The Mojon Twins (Spectrum 128k)Hi! this is our first christmas present! :lol: [size=150]Sgt. Helmet Zero[/size] [img]http://www.mojontwins.com/wp-content/uploads/2009/12/09.gif[/…

    ... />
    [size=150]Sgt. Helmet Zero[/size]

    [img]http ... .mojontwins.com/juegos_mojonos/sgt-helmet-zero/[/url]

    [size=150 ...
    anjuel anjuel December 2009 Games
  • Zero (aka Ziggy) 0.4.5The 0.4.5 preview build is available for er... preview. There are still some bugs and glitches to iron out but I have taken various suggestions on bo…

    ... .wordpress.com/2010/10/12/zero-is-the-new-ziggy/"]my ...
    Arjun Arjun October 2010 Emulators
  • Zero 0.4.6 - The WoS SpecialI'm happy to announce the availability of the next version of Zero. I'm calling it the WoS Special not only because today is WoS's b'day but also bec…

    ... of the next version of Zero. I'm calling it the ... b'day but also because Zero now includes Infoseek browsing built ...
    Arjun Arjun November 2010 Emulators
<1234567…34>

Latest Posts

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