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<1234567…34>
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... info related to the draw rom subroutine. The Line-Draw require two sets ... show a working example to draw a line in asm ? because i ...
    arfgh arfgh June 2010 Sinclair Basic
  • A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…

    ... a line draw, this ... ; ---------------------------------------------------------------------
    ; DRAW using Bresenham's algorithm and ... ---------------------------------------------------------------------

    ;; DRAW PROCEDURE
    PROC
    ...
    boriel boriel December 2010 Development
  • "TommyGun" gets a complete MAKEOVER for next release ...From the author, Tony Thompson ... """""""""""""""""""""""""" [B][I] I hadn't worked on the TommyGun editor for while. But when I got sick (about …

    ... I have plugins that can draw Spectrum and C64 4 color ... released by me are Free draw, line draw, square, spray can etc. Additional ...
    Sadako Sadako April 2004 Development
  • My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…

    ... ;number of bytes per line
    ldir ;draw line

    ... br /> call IncY ;get next line draw position, return in de
    line to draw
    dec bc
    HexDump HexDump April 2007 Development
  • Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…

    ... . It also calls PLOT and LINE-DRAW. At present the main BASIC ... /code (apart from the PLOT/DRAW bits, of course) the lower ... need to change the start line to:
    LD A,3 ...
    Battle Bunny Battle Bunny November 2010 Development
  • ZX-Paintbrush 2.2.9.5Dear ZX-Paintbrush friends, I want to present you some preview pictures of my latest progresses. Well, there are some bug-fixes to do, but it's work…

    ... [/IMG]

    Orthogonal line - draw one line and one point and a ... movable orthogonal line pair appears:
    [IMG] ... br />
    Parallel lines - draw one line and one point and a ... movable parallel line pair appears:
    [IMG] ...
    clausjahn clausjahn November 2012 Emulators
  • How does OVER work?I've found a short program that shows an example of the OVER command and it has me puzzled. The listing sets OVER to 1 then plots a point and draws a…

    ... a point and draws a line. It then repeats itself with ... . A longer listing has the line draw over other colours and yet ... when it is repeated the line disappears completely so the other ... as they were before the line was drawn over them. I ...
    LevelUp LevelUp December 2019 BASIC
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…

    ... post here my line routine so that we ... /> ; DRAW-LINE
    ; ******************************************************************************
    ;
    ; Draw a pixel line from (x0 ... br /> ; OUT: None.
    line:
    ld b,l
    rtunes rtunes October 2001 Sinclair Miscellaneous
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…

    ... now the line routine looks as follows:

    ; DRAW-LINE
    ; ... ******************************************************************************
    ;
    ; Draw a pixel line from (x0,y0 ...
    rtunes rtunes October 2001 Sinclair Miscellaneous
  • more than 2 colours in an 8x8 sqaure?something that came up in the misc. forum - it was something I always wanted to see. In which games was this acheived? Both Black Lamp and Popeye ha…

    ... ) with sprites and partially completed line draw routines. But it uses the ...
    Alcoholics Anonymous Alcoholics Anonymous May 2005 Games
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... of the time during a line draw is not in the bytes ... /dx decisions. To plot a line 160 pixels wide requires 160 ... the y coordinate. Plotting a line 256 pixels wide requires 256 ... manage to speed up the line drawing considerably.
    Alcoholics Anonymous Alcoholics Anonymous September 2006 Sinclair Miscellaneous
  • Complex DRAW command?After looking at some Speccy code I noticed that the DRAW statement is used to draw lines (or it looked that way). On the Coco, the LINE command was…

    [QUOTE=Arjun;171178]You can draw an arc by specifying a ... third parameter in the DRAW command.[/QUOTE]
    The CoCo ... 's a simple way to draw sprites, screens for adventure games ... than a lot of individual LINE, DRAW or PLOT (Applesoft BASIC) statements ...
    JamesD JamesD February 2007 Development
  • My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…

    ... ;number of bytes per line
    ldir ;draw line

    ... br /> call IncY ;get next line draw position, return in de
    line to draw
    dec bc
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?

    ... . Getting new address (one line down) is very fast just ... position
    POP HL first line
    LD (HL),C ...
    ...
    POP HL next line
    [/code]

    ... 1st line
    - draw line here -
    POP HL 2nd line
    - draw line here ...
    omega omega May 2007 Development
  • Vector drawing routines.Anybody could point me to some sort of vector drawing package of routines, callable from BASIC? With "vector drawing" I mean to draw 2D pictures with…

    ... a look at all the line drawing, etc, stuff.

    line draw or splib2's pattern filler ...
    Alcoholics Anonymous Alcoholics Anonymous October 2007 Development
  • Vector drawing routines.Anybody could point me to some sort of vector drawing package of routines, callable from BASIC? With "vector drawing" I mean to draw 2D pictures with…

    ... my image parser to draw lines, circles and ... /> #
    # Any extra command line options for the assembler
    case 1: // line draw
    // draw(int x1, int y1, int ... x2, int y2);
    draw(params[0], params[1], ...
    Alcoholics Anonymous Alcoholics Anonymous October 2007 Development
  • Arti've decided to paint pictures and flog them to art cafes, and also online, mostly on ebay. i only did basic art at school, i can't really draw and …

    ... me for instance I can line draw, pencil draw, pen and ink drawing ... and pastels. I used to draw all the time when I ... liked, and I used to draw variations of it when I ...
    dm_boozefreek dm_boozefreek January 2008 Chit chat
  • Packing numbers in as least memory as possibleI am writing some code for drawing vector lines etc. on the screen. These need to be stored in memory and I want to pack them in a smaller area as po…

    ... version is a beginning with line draw, pattern fill and move point ... the possibility to call a "draw subroutine", as you did, would ... reduce the size of scene draw lists. A huffman compression would ...
    Alcoholics Anonymous Alcoholics Anonymous March 2008 Development
  • Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…

    ... (PLOT 4) has been implemented. DRAW (PLOT 5) has been partially ... I haven't implemented a LINE-DRAW routine, it doesn't do ...
    Jimmy Jimmy August 2008 Development
  • Multi platform games developmentWe all know there are a lot of multi platform games. For example, Boulder Dash, River Raid, Exolon, Zynaps, Flying Shark, AMC and so on which were av…

    ... was just a crazy double line draw routine.

    Each letter ... bend and twist). All points 'line draw' to each of their adjoining ... points and a line draw routine draws a line from point to ...
    frobush frobush April 2009 Games
  • can someone help with a rom routinei have been trying to draw a simple line with a the rom routine , but i just cant get it to work , so if anyone can give me an example in z80 that wo…

    ... br />
    Drawing a Line: CALL 9146 (23BAh)
    < ... br /> The ROM line-drawing routine proper starts at ... line. On entry the DE registers hold the signs of the DRAW ... to the BASIC line DRAW 0,175 would ... line and an error will occur if you try to draw ...
    Steve(spt) Steve(spt) August 2009 Development
  • An idea for a possible(?) new interfaceDue to the Spectrum's processor speed and the way the ULA works, there are a couple things (among others) that are difficult to do: -Gigascreen or a…

    ... per scanline, hardware scroll and line draw, a simple blitter and 4 ...
    omega omega October 2009 Hardware
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... .
    I think that this Line-Draw routine works different or expect ... when i do a Basic 'draw 10,10' i placed a ... DE registers dont contains the draw parameters. Is it possible that ...
    arfgh arfgh June 2010 Sinclair Basic
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... you're using to call LINE-DRAW isn't quite right. Although ... .

    To get your DRAW 10,10 example working try ...

    call $24BA ;call LINE-DRAW (skipping initial stack instructions)
    GReW GReW June 2010 Sinclair Basic
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... you're using to call LINE-DRAW isn't quite right. Although ... .

    To get your DRAW 10,10 example working try ...

    call $24BA ;call LINE-DRAW (skipping initial stack instructions)
    Dr BEEP Dr BEEP June 2010 Sinclair Basic
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... just to call the main line-draw address ?
    Because if we ...
    arfgh arfgh June 2010 Sinclair Basic
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... just to call the main line-draw address ?
    Because if we ...
    GReW GReW June 2010 Sinclair Basic
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ok shiru, and this is the case of the line-draw routine, that change the value of the hl' when return. For this reasson we must preserrve it from the call that make our program.

    So these alternate registers are used internally by the Z80 ?
    arfgh arfgh June 2010 Sinclair Basic
  • Help! Reverse engineering a Spectrum game[deleted]

    ... look into 'state machines' and 'draw lists' for controlling sprites/objects ... display window
    17 - A line draw routine, optimised when drawing one ...
    ASM ASM October 2010 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ... [/B]

    17 - A line draw routine, optimised when drawing one ...
    Ralf Ralf October 2010 Development
<1234567…34>

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