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<1…13141516171819…34>
  • Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …

    ... url]) aiming to decompress SCREEN$s directly into video ... depacked byte, calculate the SCREEN$ line/column by dividing ... an incremental method of calculating the SCREEN$ address ordered by columns ... data) to decompress the SCREEN$ and after depacking, reorder ...
    0sAND1s 0sAND1s October 2007 Development
  • How to rotate an imageI'm working on an idea for a game and to test it I want to draw some graphics on the screen which are made up of 8x8 pixel squares (single characters…

    The formula won't be a problem.
    However when you handle a point and set it elsewhere then that point can be set again back when your routine reaches that point.

    Solution: use 2 screens and place second screen when ready calculating.
    Dr BEEP Dr BEEP January 2008 Development
  • Good, free chess game?I have taken Vista Ultimate off my desktop PC because I was not happy with it. One thing I will miss is the decent chess game that came with Vista. …

    ... the blank facade of the screen while calculating its next move, you ...
    Arjun Arjun July 2008 Chit chat
  • Good, free chess game?I have taken Vista Ultimate off my desktop PC because I was not happy with it. One thing I will miss is the decent chess game that came with Vista. …

    ... the blank facade of the screen while calculating its next move, you ...
    HonoredShadow HonoredShadow July 2008 Chit chat
  • 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…

    ... table position during the scan, calculating it only when needed.
    screen scrolling functions with native Z80 ...
    obo obo September 2008 Sinclair Miscellaneous
  • 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 …

    ... message will come to the screen:
    [quote]
    This game ... can be done easily by calculating the amount of memory you ...
    Dr BEEP Dr BEEP September 2008 Games
  • What if...What if when you were a kid in the early 80s your parents didn't buy you a Sinclair Spectrum as your first computer? I was thinking about this earli…

    ... test, although one program involved calculating prime numbers, and another had ... :p a pattern on the screen. I remember the first time ...
    RST#08 RST#08 November 2008 Sinclair Miscellaneous
  • A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…

    ... screen address.

    Instead of directly calculating ... ; Which third of the screen are we in?
    AND ... br /> POP HL ; retrieve pointer screen byte

    XOR ... a ; replace result back on screen

    RET< ...
    Digital Prawn Digital Prawn December 2008 Development
  • How does the Speccy deal with the Character Set?Hi All, Can anyone spare a little time to explain to me the basic Assembly method of how the Speccy interprets and retrieves Characters to print on …

    ... ;pattern
    LD (DE),A ;screen addr
    INC HL ;next ... explains the simple calculating (related to character positions on screen).
    Note ...
    roko roko February 2009 Development
  • ZX-Paintbrush new functionsDear folks, I want to tell you some news I'm just now implementing into ZX-Paintbrush. On the other hand: the more new functions I want for the next…

    ... mixing it with the ZX-Screen area (and maybe with a ... could draw your ZX Spectrum screen on top of it, just ... time party' when it's calculating a background picture.. ;-)

    clausjahn clausjahn February 2009 Announcements
  • Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…

    ... of each character square than calculating it, but that's a ... of each line of the screen, or the first byte of ... down one byte on the screen.

    What do you ... off the edge of the screen? It will slow you down ...
    joefish joefish May 2009 Development
  • New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…

    ... the address tables into the screen and the attribute buffer (12K ... moment, half of these tables (screen) are in slow RAM (bottom ... taken from a table, as calculating them per pixel row takes ...
    joefish joefish August 2009 Development
  • Question on copying screen bufferHi, Al my prevoius games were copying graphics directly to screen memory starting at 16384. Now I'm experimenting with screen buffer where I could d…

    ... a table for your screen addys rather than calculating them as you ...

    gentable
    ;generate screen address table of beginning
    Bandit Bandit December 2009 Development
  • Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…

    ... a specific location on screen. There are different screen modes, different libraries ... text at specific positions on screen. Anything that does this is ... your own multidimensional arrays by calculating a single dimension index from ...
    Alcoholics Anonymous Alcoholics Anonymous February 2010 Games
  • New game out now: Final Fantasy ZXEver since I played the games on the SNES, I thought that it should be possible to make a strapped-down version for the Speccy. Just minus any super …

    ... for browsing WoS on a screen the size of a matchbox ... for character stats and multipliers calculating damage, I think I even ...
    XTM of TMG XTM of TMG April 2010 Games
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... - Print characters to the screen when it can be done ... to print to the screen via RST 16 then ... get text on the screen and worry about the ... The BASIC is slow in calculating. When you use registers (BYTEvalues ... win the speed in the calculating.
    To me the ...
    Dr BEEP Dr BEEP April 2010 Development
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... , it draws directly on the screen.

    [code] ld h ... we need to fill the screen area
    ;first and last ... , we have to calculate the screen area address from X,Y ... returns address of the next screen line, calculating it from the given ...
    Shiru Shiru June 2010 Sinclair Basic
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... (no problems if the whole screen is always has the same ... we need to fill the screen area
    ;first and last ... , we have to calculate the screen area address from X,Y ... returns address of the next screen line, calculating it from the given ...
    Shiru Shiru June 2010 Sinclair Basic
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... of a character position on screen.

    [CODE]LET sa ... goes.

    Rather than calculating the address using the above ...
    Paddy Coleman Paddy Coleman August 2010 Sinclair Basic
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... of a character position on screen.

    [CODE]LET sa ... goes.

    Rather than calculating the address using the above ...
    Dr BEEP Dr BEEP August 2010 Sinclair Basic
  • Help! Reverse engineering a Spectrum game[deleted]

    ...
    09 - A debug screen that displays the register values ... pixel and filling the whole screen
    11 - A slow ... trim graphics that exit the screen or display window
    ... calculating velocity, gravity, rotation and SIN/COS
    20 - A fast screen ...
    ASM ASM October 2010 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ...

    09 - A debug screen that displays the register values ... trim graphics that exit the screen or display window
    calculating velocity, gravity, rotation and ... />
    20 - A fast screen address lookup routine, that is ...
    Ralf Ralf October 2010 Development
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... an easy/quick way of calculating the memory address of a ... wanted to "plot" pixel at screen coordinates 50,50 how would ... on how to calculate the screen memory address are here, as ...
    mcleod_ideafix mcleod_ideafix February 2011 Sinclair Basic
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... range of addresses for a screen memory plus an attribute memory ... -level in MC routines for screen handling.
    The reason for ... hardware is that two bytes (screen + attr) must be read at ... . Added chips for a complex calculating would have introduced loss of ...
    roko roko February 2011 Sinclair Basic
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... range of addresses for a screen memory plus an attribute memory ... -level in MC routines for screen handling.[/QUOTE]
    Sounds ... . Added chips for a complex calculating would have introduced loss of ... choose any width for your screen (in columns)

    ...
    TVzombie TVzombie February 2011 Sinclair Basic
  • Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…

    ... perfectly but when the game screen appear or exit the game ... ) or other files the game screen appears and reset the Spectrum ... I have a BASIC RAM calculating: LET N=PEEK 23732 + PEEK ...
    Mobutu Mobutu April 2011 Hardware
  • Something impossible has happened.Scientists have discovered a new force emitting from the core of the Sun. It is responsible for accelerating the decay rate of matter. It has been …

    ... to matter. The forumla for calculating how much matter can be ... ://www.worldofspectrum.org/showscreen.cgi?screen=screens/in-game/d/DraughtsGenius ...
    WhenIWasCruel WhenIWasCruel May 2011 Chit chat
  • Last Sunset for LatticaHere's a [b]rough first draft[/b] of the [url=http://www.users.globalnet.co.uk/~jg27paw4/pourri/lattica.gif]Lattica map[/url], just to demonstrate th…

    ... always bounces back into the screen it just came from, at ... had some complicated formula for calculating connections between map segments based ...
    Battle Bunny Battle Bunny June 2011 Support files
  • Birthday PlotsHello all; When browsing the web, I stumbled across an oddity known as Birthday Plots. In effect somebody enters a numeric date and the computer prin…

    ... account the minimum dimensions when calculating the scale adjust in lines ... don't use the full screen. The pictures below show the ... didn't mention, was pre-calculating scale factors xmod and ymod ...
    Einar Saukas Einar Saukas July 2011 Sinclair Basic
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Latest Posts

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    harriusherbartio on 11:21AM
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    Renegade on April 21
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