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  • What is the maximum fps the spectrum can achieve?I have been doing some reading and from what I understand the Spectrum outputs a PAL signal, but that means it will display @50fps or @25fps? If t…

    ... that corresponds to the first line at the top left of ... the end of the line, a horizontal/ line sync signals the display ... that the end of the line has been reached, and the ... next line of the display, whereby the drawing of the next line starts ...
    1024MAK 1024MAK August 2017 Hardware
  • Gandalf - A ZX Spectrum platformer that looks rather nice indeed![img]https://1.bp.blogspot.com/-BuVmuvmRXfg/WYhRw0z0lMI/AAAAAAAAisA/LFKD4SipiSkm3x0FsCNjJCRsCnHgE6W6gCLcBGAs/s640/GandalfZX.jpg[/img] [quote]As ma…

    ... synch itself with the TV drawing the image. It works by ... video frame to the first line of the Spectrum's pixel ... use heavily compressed ways of drawing the scenes to save memory ...
    joefish joefish August 2017 Development
  • 1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …

    ... db 9eh ;line 66
    db 9fh ;line 67
    line, jump line, piece height
    ... main_call ;if so, skip drawing the line

    ...
    Arkannoyed Arkannoyed October 2017 Development
  • Custom Menus on the ZX Spectrum +3Today, my Friends, i have the pleasure of presenting a program i have written which gives a set of custom menus on the +3. The main features of my p…

    ... ?p=discussion/53114"]Timmy's Line Draw Demo[/url], as such ... Calculator? If it's only line and circle routines, then perhaps ... .

    Back to the drawing board! :))
    The_Bert The_Bert October 2017 Sinclair Basic
  • 1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …

    ... db 9eh ;line 66
    db 9fh ;line 67
    line, jump line, piece height
    ... main_call ;if so, skip drawing the line

    ...
    Arkannoyed Arkannoyed November 2017 Development
  • ZXBaremulator v2.0Hi all, I've released the new version of my ZX Spectrum bare-metal for Raspberry PI. The new features and the images can be found on my project si…

    ... hear that this was your line of thinking all along, it ... Bytes?". After running your BASIC drawing program, you hit ALT+C ...
    kgmcneil kgmcneil November 2017 Emulators
  • Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…

    ... but I think the third line in the above listing
    drawing the background; you just set ...
    joefish joefish November 2017 Development
  • Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…

    ... text editor with a long line of text and a horizontal ... the window. This might mean drawing only visible half of the ...
    tstih tstih January 2018 Development
  • Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…

    ... /> [code]
    ;Proportional-width font drawing routine
    ;Public release version ...
    inc d ;down one line
    inc l ;next byte ...
    Ast_A_Moore Ast_A_Moore March 2018 Development
  • draw single pixel in the borderI have problems with drawing in the border. I can get it to draw a line ,but it always becomes a line and not a single pixel. <br><br>rept 3580 <br…

    ... drawing in the border. I can get it to draw a line ... it always becomes a line and not a single pixel.< ... I am using for border drawing?[/quote]

    Sorry for ...
    micken micken May 2018 Development
  • How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…

    ... of the old position and drawing the new.

    [code ... that the position you're drawing at is not currently being ... ) flicker. Don't worry about line 30's complex LET x ... old x/y coords for line 20 to use.
    Dunny Dunny May 2018 BASIC
  • How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…

    ... hang up programmers have with line numbers in basic , no matter ... are still jumping to a line of code.

    DEFPROC ...
    ASH-II ASH-II May 2018 BASIC
  • im looking for a fill routine written in basici know this would be slow but i want to tinker with it to produce something else.

    ... position and size.
    Line 300 runs from top ... to bottom
    Line 310 works out the ... edge.
    Line 320 draws a solid line from left- ... we do:

    Line 330 protects us from dividing ... efficient to jump the drawing point left in increasing ...
    joefish joefish July 2018 Development
  • is there a wire frame version of total eclipse, 3d construction kit, etc?is there a wire frame version of total eclipse, 3d construction kit, etc? this would mean the game would run faster. total eclipse, etc is too slow.

    ... as complex as Freescape, hidden line removal would be a must ... isn't necessarily faster than drawing solid planes; and in some ...
    digital digital August 2018 Development
  • Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…

    ... case of changing that one line in the ROM and then ... see it starts drawing from what (would be "line 23") as such ... realise there's no such line ( ! ) but it should make sense ...
    spider spider October 2018 Sinclair Basic
  • Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…

    ... pattern, we can skip actually drawing it because it's empty ... glyph pattern is 0, skip drawing
    ld a, l
    ld de, #0x5e ; next line of glyph data
    add ... , next 94 bytes the second line, etc.
    N*16 bytes ...
    Sol_HSA Sol_HSA December 2018 Development
  • Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…

    ... preshifted bytes. Then in the drawing loop, a byte of graphics ... .e. you print a single line (byte) of a character and ... doing several additions per each line of a single character, which ...
    Hikaru Hikaru December 2018 Development
  • Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…

    ... [code]
    ;Proportional-width font drawing routine
    ;Public release version ... br /> ;move to next line (comment out to leave at ... 255? No? Continue on same line.

    inc de ... blank inc h ;down one line
    inc e ;next byte ...
    Ast_A_Moore Ast_A_Moore December 2018 Development
  • Good Beginners Basic BookMy 10 year old son would like to learn basic programming. Can anyone suggest a good book or books that would help? There are a lot in the archive a…

    ... machine (try drawing a red line near a green line for example). Things ... like single keyword entry, line numbers etc just make it ...
    AndyC AndyC February 2019 Sinclair Basic
  • Good Beginners Basic BookMy 10 year old son would like to learn basic programming. Can anyone suggest a good book or books that would help? There are a lot in the archive a…

    ... machine (try drawing a red line near a green line for example). Things ... like single keyword entry, line numbers etc just make it ... .V. displayed the famous one line, 1982 Sinclair Research and I ...
    mik3d3nch mik3d3nch February 2019 Sinclair Basic
  • Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…

    ... of times I iterate the line-cutting algorithm and the compiler ... placing lines in 3D and drawing them with perspective, then letting ...
    joefish joefish March 2019 Development
  • Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…

    ... need to care whether each line has a different number of ... 32 non-control chars per line. I'll give it ... game. A very quick drawing would reduce the plot of ... say 20, and the line can look a little too ... for instance, even though the drawing is only a little faster ...
    patters patters April 2019 Brand new software
  • border effectsive been playing around with border effects like 10 border 1 20 border 2 30 pause 1 40 goto 10 ,etc i even wrote one in machine code. …

    The screen is drawn one line at a time, it happens ... . Each time it gets to drawing the border, the hardware looks ...
    AndyC AndyC May 2019 BASIC
  • border effectsive been playing around with border effects like 10 border 1 20 border 2 30 pause 1 40 goto 10 ,etc i even wrote one in machine code. …

    ... while the TV is still drawing it.
    PAUSE 1 doesn ... the TV refreshes its display line-by-line.

    The same ... code, you can make each line or even (in the top ... ) a short part of each line a different colour. Or make ...
    joefish joefish May 2019 BASIC
  • 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…

    ... and 2, and then not drawing anything else.
    Additionally it ... hl,sp ; Move to next line
    add hl,28 ;
    line 8 repeat
    ld hl ...
    robpearmain robpearmain June 2019 Development
  • im looking for other games like the muncher that use double height and width graphics with colouri havent come across this type of graphics mode on the spectrum before and would like to know if there are any other games that use it.

    ... games get away with drawing on every other line, which can enhance ...
    colonel32 colonel32 June 2019 Games
  • Raster effects - quick questionHi Guys Just a quick question regards what the ULA is doing as its drawing each scan line. Assuming the beam has finished drawing the border, am I…

    ... data while the beam is drawing the border edges of the ... the raster is on a line, to avoid the appearance of ... in the rest of the line just ahead of the raster ...
    joefish joefish August 2019 Development
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Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21

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