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  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... masked sprites move in straight lines
    // at various speeds, bouncing ... pixels
    char dy; // signed vertical speed in pixels
    };
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Hacking a +2 into a shorter caseIf anyone's got a copy of the notes or text they posted about re-wiring the +2 joystick ports or hooking up a tape recorder to the motherboard casset…

    ... keys? Are the extra lines re-connected to the original ... />
    The extra lines in the +3 membrane are ...
    Mar 18, 2015 13:57:19 GMT joefish said:
    lines from the ULA. Though ...
    May 11, 2015 21:57:43 GMT 1024MAK said:
    1024MAK 1024MAK May 2015 Hardware
  • Using a TV as a pc monitor full timeRight<br><br>the pc i use is in the corner of the bedroom, the tv / dvd player / wii is in the other corner. theres a connection to connect a pc to t…

    ... I still miss the heady vertical resolution of 1600x1200 a decade ... over multiple screens it all lines up nicely.
    Scottie_uk Scottie_uk June 2015 Chit chat
  • Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…

    ... -bit decoder to 8 output lines rather than OR or NAND ... . And it does have a vertical expansion port, so you could ...
    joefish joefish June 2015 Emulators
  • Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…

    ... for the upper address lines that using these alone ... to use lower address lines to make the distinction, ... advantage in using upper lines, especially as it would ... take it decoding of lines other than A0 for ... And it does have a vertical expansion port, so you ...
    zub zub June 2015 Emulators
  • TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…

    ... scanlines totaling 625 PAL scan lines.

    But it ... data, hence halving PAL scan lines, which also helps to ... br />
    8 scan lines for vertical synch period
    56 scan ... lines, for top border
    ...
    RMartins RMartins August 2015 Development
  • TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…

    ... mean the R+G+B vertical strips in a tiny ... monitor, which had many more lines of pixels, and all ... can clearly see the lines it's scanning and ... only have redrawn all its lines after two frames. But ... moving object, but alternate lines of the screen are lagging ...
    joefish joefish August 2015 Development
  • Raycasting (3D Games!) with SpecBAS<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Here's one I wrote just recently. I wanted to see …

    ... closest vertical slice for each pixel column of the screen. Subsequent lines ... discarded. Then you render in vertical columns from your buffer. I ...
    joefish joefish August 2015 Sinclair Basic
  • TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…

    ... .png[/img]
    Trigger (vertical mark), at start of PAL ... /> - Line #3 Horizontal Sync (noticed vertical trigger mark "black arrow", pointing ... And finally, here is the Vertical Sync, after PAL line #306 ... looking to be around 4 lines width instead of 8.
    RMartins RMartins August 2015 Development
  • Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …

    ... Ohm resistors on the RGB lines, but its a little in ... 's also a lot of vertical bar noise with this coverter ... combining the BRIGHT and RGB lines in the cable as it ...
    Questarian Questarian August 2015 Hardware
  • 1985-2015.A topic where we can review games released on the Speccy 30 years ago, or, anyway, talk about that year.

    ... vertical shoot'em up where you must advance through the enemy lines ...
    JuanF. Ramirez JuanF. Ramirez September 2015 Games
  • Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…

    ... frame while scrolling? Actually during vertical scrolling you don't have ... from the 2nd line. Draw lines to the end of buffer ...
    Ralf Ralf September 2015 Development
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... as 0 and then two lines of code were being to ... it.
    ld a,(ycoord) ; vertical position.
    rst 16 ; print ... coords.
    ld hl,ycoord ; vertical position.
    dec (hl) ; ... it.
    ld a,(ycoord) ; vertical position.
    rst 16 ; print ...
    antonyjones101 antonyjones101 September 2015 Development
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... x, y; where x is vertical and y is horizontal" instead ... as 0 and then two lines of code were being to ...
    lunarul lunarul September 2015 Development
  • Angles and blocksHelp! Sprites! Blocks! Angles! I have a sprite that has a choice of 64 angles, and want it to deflect on collision with blocks. http://i1142…

    ... -based system, using those diagonal lines like a laser for instance ... assume first-off either a vertical or horizontal wall. You exchange ...
    joefish joefish September 2015 Development
  • Angles and blocksHelp! Sprites! Blocks! Angles! I have a sprite that has a choice of 64 angles, and want it to deflect on collision with blocks. http://i1142…

    ... -based system, using those diagonal lines like a laser for instance ... assume first-off either a vertical or horizontal wall. You exchange ...
    Einar Saukas Einar Saukas September 2015 Development
  • Angles and blocksHelp! Sprites! Blocks! Angles! I have a sprite that has a choice of 64 angles, and want it to deflect on collision with blocks. http://i1142…

    ... of pixels instead of detection lines). Now F will be center ... , but if you only have vertical and horizontal walls, you will ...
    Einar Saukas Einar Saukas September 2015 Development
  • Ninjaman 8-way scrolling 50Hz multicolour demo :-)Here's a demo I've been working on for a while. The goal was to make the best scrolling routine possible on a humble 48K ZX Spectrum. I was origin…

    ... every 8 lines, but you get to pick the vertical start position ... , which is what allows vertical scrolling. It [i]may[/i ...
    Kayamon Kayamon November 2015 Development
  • Some downloads fail meI want download the schema of the Spectrum +2A and I can not because appears a user and password request in all links of "SCHEMATICS, MANUALS AND TEC…

    ... don't believe because the vertical synchronism has 50 hz but ... load of save in the lines of the border of the ...
    DAVID BRUNNER DAVID BRUNNER November 2015 Hardware
  • Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…

    ... / brightness / contrast settings.

    Vertical banding (like shown in 2nd ... in video encoder / ULA supply lines. A suitable coil in series ...
    RetroTechie RetroTechie December 2015 Hardware
  • Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…

    ... options.[/quote][quote="RetroTechie;843635"]Vertical banding (like shown in 2nd ... in video encoder / ULA supply lines. A suitable coil in series ...
    1024MAK 1024MAK December 2015 Hardware
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    ... white border, black screen with vertical white lines running down. The sync ...
    kenwonders kenwonders January 2016 Hardware
  • Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…

    ... , and looking at > 50k lines of code in the z88dk ... flood filler works.

    Lines 129 through 186 set up ...
    Alcoholics Anonymous Alcoholics Anonymous April 2016 Development
  • Black screen on 48k+Hello peeps Just bought a 48k+ was working fine then after leaving it off over night I turned back on to get a total black screen, no border etc. …

    ... . Do you see thin vertical red lines on the black screen? Does ...
    1024MAK 1024MAK May 2016 Hardware
  • A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…

    ... the asm stuff. The compile lines are listed at the top ...
    unsigned char dy; // signed vertical speed in pixels
    };
    Alcoholics Anonymous Alcoholics Anonymous June 2016 Development
  • P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…

    ... )??
    [b] Any thoughts concerning Vertical sections (ladder climbing isn't ... />
    Sitting on the side lines for now... ;)
    kgmcneil kgmcneil June 2016 Development
  • P.O.W.As far as I know, a port of P.O.W. (Prisoners of War) from NHK, doesn't exist. [img]https://cld.pt/dl/download/61d19b5e-453b-489c-b17b-d3ed6fccd594/…

    ... numbers :D

    10 vertical 16x16 tiles, I can relate ... would be the number of lines, for 20 chars height.
    lines!


    Sprites 40x40 ... pixels = 5 pixel bytes * 40 lines = 200 Sprite pixel bytes
    RMartins RMartins June 2016 Development
  • Consolidating forum categoriesI posted this elsewhere, but it should probably go here: [quote="Rorthron;857978"]As an aside, can we consolidate the various topics on New WoS in…

    ... prefer something like this (the lines in capitals are headings):

    Currently WoS Updates contains 57 threads across 8 categories. That ...
    Rorthron Rorthron July 2016 WoS/Forum Issues
  • Consolidating forum categoriesI posted this elsewhere, but it should probably go here: [quote="Rorthron;857978"]As an aside, can we consolidate the various topics on New WoS in…

    ... prefer something like this (the lines in capitals are headings):

    Currently WoS Updates contains 57 threads across 8 categories. That ...
    1024MAK 1024MAK July 2016 WoS/Forum Issues
  • Magenta border and black screenGot my hands on a issue 3 48k machine. Did the initial resistance checks and everything seemed in order buy when I switch the machine on all I get is…

    ... memory. On screen you get vertical red lines.

    But from ...
    1024MAK 1024MAK September 2016 Hardware
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