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Search Again :: Adv Search 1000 results in 0.026s
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  • 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…

    ... who used to constantly put down the Speccy (not too seriously ... the memory address or a pixel look rather complicated, and I ... simple to work out any pixel's address and BIT value ...
    ewgf ewgf February 2011 Sinclair Basic
  • Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…

    ... -screen. But then a 2-pixel scroll at 50Hz would be ... is that's deliberately slowed down to 2 frames, not 1 ...
    joefish joefish February 2011 Games
  • Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…

    ... -screen. But then a 2-pixel scroll at 50Hz would be ... is that's deliberately slowed down to 2 frames, not 1 ...
    maiki maiki February 2011 Games
  • Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…

    ... say it was deliberately slowed down!
    Try POKEing 32909,1 ... impressed by R-Type, which pixel-scrolls scenery in situ in ...
    joefish joefish February 2011 Games
  • A thousand core CPU?Maybe this is old news to most people on here, but according to: [url]http://www.zdnet.co.uk/news/emerging-tech/2010/12/25/intel-why-a-1000-core-chi…

    ... XBox had fewer bits per pixel). The difference is just night ... , they can both do 30mph down an average road, but would ...
    The Starglider The Starglider February 2011 Chit chat
  • A thousand core CPU?Maybe this is old news to most people on here, but according to: [url]http://www.zdnet.co.uk/news/emerging-tech/2010/12/25/intel-why-a-1000-core-chi…

    ... XBox had fewer bits per pixel). The difference is just night ... you take the games resolution down to 640x480?

    No ... , they can both do 30mph down an average road, but would ...
    ewgf ewgf February 2011 Chit chat
  • Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…

    ... scroller is moving at 1 pixel at 25 frames a second ... poke, it moves at 1 pixel at 50 frames a second ... ever have to slow it down it'll start to look ...
    joefish joefish February 2011 Games
  • Flip Screen vs ScrollingWhich do you prefer? I've always liked flip screen games but I had a C64(spit) owning friend who hated them with a passion.

    ... scroll 1 pixel vertically, you just need to shift everything down (or ... (32 bytes). To scroll 1 pixel horizontally you need to do ...
    ccowley ccowley February 2011 Games
  • Flip Screen vs ScrollingWhich do you prefer? I've always liked flip screen games but I had a C64(spit) owning friend who hated them with a passion.

    ... -shifted to all the different pixel positions. The colours are all ... explained that it's then down to an elaborate bit of ...
    joefish joefish March 2011 Games
  • Flip Screen vs ScrollingWhich do you prefer? I've always liked flip screen games but I had a C64(spit) owning friend who hated them with a passion.

    ... -shifted to all the different pixel positions. The colours are all ... explained that it's then down to an elaborate bit of ...
    takapa takapa March 2011 Games
  • Recommend a dev environmentIt's been a while since I last wrote any Z80 assembler - must be over 20 years, and since I wrote any spectrum Z80 assembler more like 25 years. I n…

    ... calculate pixel address, modify screen address by moving left/right/up/down ...
    Alcoholics Anonymous Alcoholics Anonymous March 2011 Development
  • Screen burn questionDoes anyone know how to get rid of screen burn? I've been watching the snooker on my LCD Panasonic tv for the last 3 hours, when i changed the chann…

    ... retention sometimes due to stuck pixel(s). Sometimes this is caused ... , simply turn the colour tempature down by selecting an alternative contrast ...
    Hercules Hercules March 2011 Chit chat
  • Really neat pictures you have taken.For Christmas this year I got from a wife a Lumix Z28 camera. It's a SLR style (note not an SLR) camera with a 18x optical zoom and wide angle lens a…

    ... my camera purely down to its 18.5 mega pixel sensor and ...
    Scottie_uk Scottie_uk March 2011 Chit chat
  • Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …

    ... scrolls sideways.
    Not up/down.

    You can in ... anywhere in the map, down to the pixel, and render the entire ...
    joefish joefish March 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... that'd mean everything slows down and I could probably only ... probably drop to a 2-pixel scroll at 25Hz (like [I ...
    joefish joefish April 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... IX/IY would slow everything down that much? I assume that ... , whereas you do one 16 pixel row at a time... So ...
    Patrik Rak Patrik Rak April 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... /IY would slow everything down that much? I assume ... 't contended, the instruction boils down to:

    ... , so it all slows down. Exactly the same would ... set of POPs for each pixel line, and it does ... every method will slow things down.

    [QUOTE= ...
    joefish joefish April 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... /> If you move things one pixel at a time at 50 ... -way scrolling would slow it down that much?
    joefish joefish April 2011 Development
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... /> If you move things one pixel at a time at 50 ... -way scrolling would slow it down that much?[/QUOTE]

    torot torot April 2011 Development
  • SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…

    ... to specify the x/y pixel position to PRINT at. ... br /> dec hl ; move hl down one address

    ... jr nz, vchrq ; code, move down 8 pixels and open channel ...
    rr h ; correct pixel position, place it on the ... If it doesn't, move down 8 pixels and back to ...
    chev chev April 2011 Sinclair Basic
  • New Game: Flynn's Adventure In Bombland (Demo)Hi All Decided to release a demo version of a new game I'm developing. Got to the stage were most of the code is in place so thought it would be goo…

    I've actually fixed the pixel movement, using a slide technique. ... will slide your character up/down/left/right depending on which ...
    TomD TomD April 2011 Brand new software
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... into a grid of 16x16 pixel blocks, and each block is ... takes longer, so things slow down. Thanks to the contended way ...
    joefish joefish April 2011 Development
  • Your favourite Speccy Demo?(Sorry if this has been done before) By the time I Offloaded all my speccy stuff in favour of the Amiga, (Circa 1990) The Demo scene was stonkin' on…

    ... /> Of course, it's all down to what you know too ... per polygon, or once per pixel, to alter the output - the ... /02/25/ceasefire-all-falls-down/]his blog[/url] rather than ...
    gasman gasman April 2011 Sinclair Miscellaneous
  • 50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…

    ... /> Mine works with four 16-pixel wide patterns per row, which ... just get to tweak one pixel width of detail at each ... 's down to very careful graphic design to make that one pixel ...
    joefish joefish April 2011 Development
  • Small Machine Code Routines Which Maybe UsefulAs part of creating Flynn's Adventure in Bombland I created a lot of little routines to do all sorts of things. A lot of these I created based on inp…

    ... **********************************
    ; xy coords to screen pixel position
    ; **********************************
    ld ... br /> ; move one char row down and plot again
    ; *************************************
    kgmcneil kgmcneil April 2011 Development
  • Hutch the RabbitI'm currently working on the graphics for a game that will hopefully be available for the iPhone/iPad or something. Still in it's very early stages, …

    ... had this..."discussion"...in another Pixel art forum. Their edits turned ... reply. Job done, design nailed down :lol:

    Hey, and ...
    redballoon redballoon May 2011 Announcements
  • Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…

    ... Well here's the 12-pixel deep version of the ... a Return control code, move down 8 pixels
    ;and ... character definition into the correct pixel position, place it
    ... to point to the next pixel line up in
    ... doesn't,
    ;move down 8 pixels and back to ...
    chev chev May 2011 Sinclair Basic
  • Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…

    ... fix doesn't noticably slow down the SE Basic 42- ... /> dec hl ; move hl down one address
    ld bc ... , vchrq ; control code, move down 8 pixels and open
    rr h ; correct pixel position, place it on the ... If it doesn't, move down 8 pixels and
    ld ...
    chev chev May 2011 Sinclair Basic
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... one, which gets the size down to a much more reasonable ... a way of getting it down to 41 bytes by storing ... ) and uses a 5 pixel tall, 3 pixel wide typeface. You can ...
    chev chev May 2011 Development
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... from videos it looks like pixel placement of windows on the ... I would not go for pixel placement of windows but instead ... and background clipping without slowing down. It does this by dividing ...
    Alcoholics Anonymous Alcoholics Anonymous June 2011 Development
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