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Search Again :: Adv Search 590 results in 0.001s
<1234567…20>
  • Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…

    ... ) [this seems to be the calculation of the final memory address ... 5T for the final address calculation (the Internal Operation). All these ...
    GOC GOC September 2004 Development
  • Need help with my P flag!Not sure if I've emulated the P flag correctly when its comes to overflows. Here's what I've done: LD A,123 LD B,16 ADD A,B Twos Complement of 123 …

    ... then I've assumed the calculation is -126 minus 130 (as ...
    Unique Unique February 2005 Development
  • Er, a MILLION different ways?!?!In the UK recently, there have been adverts for a media player (I forget which) whose manufacturer is encouraging purchasers to use it in shuffle mod…

    ... ; and instead of the correct calculation (2^8=256 is the ...
    robert@fm robert@fm March 2005 Chit chat
  • Map to screen address problemCan anyone help me out with what I guess is a screen address calculation problem. I need to calculate the screen address of a tile based on a number…

    ... guess is a screen address calculation problem.

    I need ...
    Mr Millside Mr Millside April 2005 Development
  • Turbo baud rates, pulses length for +50%(2250)?I need the 0-bit and 1-bit pulse lengths for 2250 baud rate. Also, a table with pulse lengths for upto +100% (and beyond) would be very useful to me…

    ... /> Or is there a simple calculation formula?

    Thanks
    FrankT FrankT September 2005 Sinclair Miscellaneous
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... the carry flag before
    ; calculation
    sbc hl,de ; the ...
    chev chev January 2007 Development
  • problem using FRAMES to generate 'random' numbersI realise the pros use bytes from ROM to get their random numbers, presumably because they want to use FRAMES to synchronise the printing and avoid s…

    ... frames before making the next calculation, but that would make the ...
    bigjon bigjon March 2008 Development
  • BBC microI was often made aware by people at the time that the beeb was the "best computer in the world." Even my next-door neighbour ( who was a bit of a co…

    ... spectrum128 ) to complete a complex calculation in the fastest time, and ...
    urbanupstart urbanupstart March 2008 Chit chat
  • Retro-X Alpha availableChanges from WIP 7 (Alpha 3) to Alpha 4 ( 1.5.08 - 14.5.08 ). Requested by and help by - in brackets. Bugfixes: * Viewer: o File list not displaye…

    ... possible in Median cut Palette calculation mode
    o SAM Mode ...
    o Most used colours calculation sometimes wrong in SAM Mode ...
    LCD LCD April 2008 Development
  • New EBAY feedback rules...The feedback system is completely cock at the moment. The percentage calculation is given for the past 12 months. My feedback percentage is 99.1% I…

    ... moment.

    The percentage calculation is given for the past ...
    chaosmongers chaosmongers June 2008 Chit chat
  • Fastest way to decide which pixel to paint in order to draw a straight line(after I saw "Bresenhams circle algorithm" in development forum, I decided to ask this in here) in fact, I want to accelerate a car towards a direct…

    ... /> I'm using some trigonometric calculation to find the course, and ...
    Arda Arda September 2008 Sinclair Basic
  • 3d vector graphicsAny1 know where to get source code for 3d vector graphics coord calculation , polygon filling , rendering priority etc etc.. thanx

    Any1 know where to get source code for 3d vector graphics
    coord calculation , polygon filling , rendering priority etc etc..

    thanx
    Xor a Xor a October 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 …

    ... to generate square wave. By calculation differences between two frequencies it ...
    jp44 jp44 November 2008 Sinclair Basic
  • Please help me complete this lil'programI'm editing Basic programs that were saved in Timex TOS discs, and every load command starts with LOAD *"filename". If I want to go through these pr…

    ... was more than just a calculation with 2 values from the ...
    zxbruno zxbruno December 2008 Sinclair Basic
  • My first novel, Dark Isle, is now available inHi spec-chums! My first novel, Dark Isle, is now available in print! :D From Amazon UK: [url]http://www.amazon.co.uk/Dark-Isle-Michael-McLarnon/dp…

    ... [/url]

    By my calculation, if every spec-chum on ...
    BigBadMick BigBadMick September 2009 Chit chat
  • Javascript question (Date.UTC method)Firstly I'll just mention that I've never done any Javascript before this week; I'm just looking at someone else's code as a problem has arisen with …

    ... /> The problem arose because of calculation of date intervals which span ...
    Battle Bunny Battle Bunny October 2009 Chit chat
  • ULA Book Price - Feedback PLEASEThe book is coming together very nicely, and I am in the process of kicking off all the administration tasks like getting ISBN numbers and setting up…

    ... ;P.

    A rough calculation at 300pages is leading me ...
    csmith csmith February 2010 Sinclair Miscellaneous
  • Optimize this assembly?Aiming for Variable*192 -> HL In the first case, I came up with the obvious method - *128 +*64: [code] ld a, (variable) ;13 ld h,0 ; 7 ld l,…

    ... a trick though? Can that calculation go faster?

    (Hope ...
    Gedlion Gedlion August 2010 Development
  • Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…

    ... the result of the last calculation was non-zero.

    Paddy Coleman Paddy Coleman August 2010 Sinclair Basic
  • So easy to use.Back in the 90s I was off work for 3 months following an operation, anyway in my boredom I dusted off my old speccy+ and the manual, and got my head …

    ... tricky part was the result calculation for assigning black/white pegs ...
    RetroGamerUK RetroGamerUK December 2011 Sinclair Basic
  • UK Postal RatesFollowing the announcement of the new UK postal rates from 30th April, I have done a quick calculation based on keyboard membranes, our most popular …

    ... , I have done a quick calculation based on keyboard membranes, our ...
    rwap rwap March 2012 Chit chat
  • 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…

    Based 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 angle triangle with sides A and B, and hypotenuse H, as an estimate of length of H, it returns (A ...
    Gedlion Gedlion April 2012 Development
  • Cricket. Duckworth/Lewis calculator.I'd appreciate it if anyone here who enjoys cricket, and ideally is also familiar with the rules of one-day matches takes a look at a little program …

    ... -score table quite fast, the calculation of the scores for it ...
    PrinceGaz PrinceGaz June 2012 Development
  • The need of having a 257-byte table for IM2 routinesThis came from a discussion at the speccy.org forum. I have understood that the reason behind the 257-table for IM 2 routines is due to certain joys…

    ... with the interrupt routine address calculation.

    People that play ...
    mcleod_ideafix mcleod_ideafix August 2012 Development
  • Anyone worked with HTML5 Canvas?Aint it awful? You cannot rotate (transform) a individual element but you have to rotate the whole canvas. That's akin to turning the room around to…

    ... weird because then everything requires calculation and is prone to subtle ...
    Scottie_uk Scottie_uk April 2013 Chit chat
  • What to do when INT doesn't work?Due to the limitations of the Spectrum's floating point number format, two slightly different large numbers, or two slightly different small fraction…

    ... . Alternatively, the result of a calculation might be slightly different from ...
    Battle Bunny Battle Bunny January 2014 Sinclair Basic
  • Calculating an average?I would like to calculate the average amount I pay per month on my sons' school lunch accounts. Every month I receive a notification when the lunch m…

    ... learning how to do the calculation would be great. I may ...
    zxbruno zxbruno March 2014 Sinclair Basic
  • Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …

    ... by 32,
    rlca ; net calculation: multiply by 4.
    and ... /> ld e,a ; vertical coordinate calculation done.

    [B]; Add ...
    Jagd Tiger Jagd Tiger April 2014 Development
  • Pacman monster helpso I am trying to write a pacman game in Specbas [youtube]0R4XmkzBfHs[/youtube] got it working ok so far.... now the tricky bit the monsters in p…

    ... />
    so what would that calculation be to work out the ...
    ASH-II ASH-II May 2014 Sinclair Basic
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  • 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)<br /> <br /> Formula is: i…

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