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  • Welcome to the Matrix!Ok here's something I been playing with while I'm at work and on public transport. I'm thinking I want to be able to move the large letters around th…

    ... time.

    Combining several lines into one saves four bytes ... n
    [/code]
    Occupies 57 bytes and takes 1647.1 ...
    GReW GReW October 2016 BASIC
  • Shimmering displayHi all, I've got a 48K issue 4S and it appears to be working apart from it's displaying weird vertical shimmering patterns. It passes a RAM test t…

    ... , it affects mostly the first vertical line of a character and ... to be brightness on alternate lines in coloured blocks. I'd ...
    Jet5y Jet5y November 2016 Hardware
  • how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…

    ... - what you get is two vertical dotted lines.

    So i ...
    mik3d3nch mik3d3nch December 2016 Sinclair Miscellaneous
  • Fast way to clear the screen ?So I was wondering fastest way to clear the screen. I've tried this and this works but is it better than CLS ? LD HL,16384 LD BC, 6144 Loop…

    ... cases (like vertical, horizontal and 1:1 diagonal lines, lines with a length ...
    GReW GReW December 2016 Assembler
  • Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…

    ... )
    db %00010101;line 57 ;line 42 (15)
    ... db %00010111;line 98 ;line 57 (17)
    db %00000111 ... after base)+no. of lines inc base
    ;bit ...
    Arkannoyed Arkannoyed March 2017 Development
  • Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…

    ... )
    db %00010101;line 57 ;line 42 (15)
    ... db %00010111;line 98 ;line 57 (17)
    db %00000111 ... after base)+no. of lines inc base
    ;bit ...
    Arkannoyed Arkannoyed March 2017 Development
  • Spectrum Next in the ArchiveWhen the Spectrum Next is launched, should it be added to the archive, and games archived as per usual WoS usage? There are a lot of new games annou…

    ... ROM SOS48 and vertical screen resolution of 192 lines, and the horizontal ...
    Black_Cat Black_Cat May 2017 Hardware
  • Beginner's z88dk help rqdI'm struggling to get my first z88dk C program to compile. My program is this: #include <spectrum.h> int main() { zx_border(INK_BLACK); } …

    ... to know the horizontal and vertical pixel shift of the image ... /spectrum

    The compile lines in the .c files were ...
    Alcoholics Anonymous Alcoholics Anonymous June 2017 Development
  • How to automatically find the character set in a gameThis is all completely new to me, so please be patient. I've done some reading up on how character sets are handled by the Spectrum. I understand tha…

    ... allow to offset (or shift) lines of text horizontally by 4 ... similar trick is offsetting the vertical print position by 4 pixels ...
    Hikaru Hikaru June 2017 Development
  • Thinking about my gameAnother long post, I'm afraid. Somewhere on this Forum is a short chunk of text I put up as a sample of what I'd like to turn into a text adventu…

    ... could benefit from more vertical spacing between the lines, and additional spacing ...
    colonel32 colonel32 July 2017 Chit chat
  • 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…

    ... only the even or odd lines (fields) of a frame are ... the expense of half the vertical resolution. Indeed, if you look ...
    1024MAK 1024MAK August 2017 Hardware
  • My new Punk music radio showHi folks, just posting that i now do a punk music radio show on the internet if anybody fancies a listen, i play punk, OI!, folk punk, goth, bit of t…

    ... , Radicals, Rockers and Reggae (3:57)
    52. Dickies - Banana ... Clash - Clash City Rockers (3:57)
    54. The Only Ones ... for pleasure (2:51)
    57. Black Flag - T.V. Party ... )
    59. Spellbound - White Lines (1:57)
    60. The Damned - Neat ...
    mel the bell mel the bell August 2017 Chit chat
  • Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…

    ... byte at 23295 is 56 (57 when read). Why 15? Dunno ... />
    I think the bottom lines are blue though? Therefore, 15 ...
    Hikaru Hikaru September 2017 Development
  • Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…

    ... the video display[/url] - cyan vertical bars, half-tiles are darker ... appearing black horizontal 1 pixel lines across the screen.

    Kamineko Kamineko November 2017 Hardware
  • Where's Mr Clowder when I need him?What happened to F-Clowder? I hope he's alright and hasn't had some setback keeping him away from here? He got me wound up to do graphics for a game…

    ... its horizontal storage to upright vertical and its difficult to visualize ... is fixed by the centre lines and using the straight line ... swings down from horizontal to vertical, I suppose theres a ... elaborate glass box framing, centre lines and arcs of motion drawn ...
    mik3d3nch mik3d3nch June 2018 Chit chat
  • Fixing a poorly Issue 3 - Odd faults.Here's one for you Spectrum fixers, I warn you it's a long one. I've spent a couple hours this evening doing several repairs on a rubber keyed Speccy…

    ... black paper area, and thin vertical red lines. Now I'm not ...
    Your Spec-chum Your Spec-chum July 2018 Hardware
  • Spectrum 48K / composite mod / LCD TV: voltages out of the ULAHello Spectrum World I have juste bought again my first computer on ebay... a Speccy 48k issue 2 with a 5C112E-2 ULA. Just had to replace TR4 and …

    ... the color bursts during vertical sync, making the vertical sync much longer ... convert some top and bottom lines of the border into sync ...
    paf paf November 2018 Hardware
  • Artillery - projectile motion gameI started writing this around 25 years ago and abandoned it due to performance issues, and a lack of physics knowledge. Bandersnatch on Netflix fille…

    ... generate the terrain is by vertical slices, and the array would ... down (for double, and triple vertical steps per horizontal coordinate, and ... can draw the terrain using lines, or UDG, and the ... shape of the terrain into vertical slices, that´s the brilliant ...
    IvanBasic IvanBasic March 2019 Brand new software
  • 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…

    ... ve been able to draw lines from both ends at once ... done optimal cases for vertical and horizontal lines, with boosts in for ... horizontal steps to draw long lines faster.

    I don ... optimise as they're always vertical whichever way you face (assuming ...
    joefish joefish March 2019 Development
  • 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…

    ... /> ;here, the primary direction is vertical, and the horizontal direction is ... blocks like that:
    1. Vertical, left to right
    2 ... . Vertical, right to left
    3. ... to draw (a lot of) lines into the buffer and then ...
    Lethargeek Lethargeek March 2019 Development
  • 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…

    ... thinking of horizontal lines here, where your example was vertical. I think ...
    joefish joefish March 2019 Development
  • 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…

    ... to work. Ive done the vertical and horizontal edge-clipping too ... step is to try placing lines in 3D and drawing them ...
    joefish joefish March 2019 Development
  • Monochrome monitorsSilly question perhaps, but thinking back were there any games specifically written to be used with a monochrome monitor? Is it true that monochro…

    ... vertical resolution however is fixed, as the number of display lines in ...
    1024MAK 1024MAK June 2019 Games
  • 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.

    ... doors, and so on). Background lines are zoomed too, but only ... is drawn on screen, vertical stretch is produced. This ... zooming of background, and producing vertical zoom.
    When in ... are scrolled, and presented in vertical zebra stripes.

    ...
    Bedazzle Bedazzle July 2019 Games
  • Starwars IV opening crawl demo---------------------_______________________--------------------------- Starwars IV opening crawl demo on 128K :) [url=https://mega.nz/#!37BV…

    ... horizontal pixel scrolls every few lines to delete a few pixels ... single pixel row, and a vertical scroll that skips a line ... -buffer, with no vertical compression, then do the vertical line-skipping in ...
    joefish joefish July 2019 Development
  • Starwars IV opening crawl demo---------------------_______________________--------------------------- Starwars IV opening crawl demo on 128K :) [url=https://mega.nz/#!37BV…

    ... horizontal pixel scrolls every few lines to delete a few pixels ... single pixel row, and a vertical scroll that skips a line ... -buffer, with no vertical compression, then do the vertical line-skipping in ...
    maeloterkim maeloterkim July 2019 Development
  • Any love for Cholo?I remember really wanting this, but seeing very little coverage on it... so I bought it, and loved it. I always wonder why it never got any covera…

    ... ]Micronaut 1[/i]. The horizontal lines on the ceiling are always ... long as the vertical walls are still simple straight lines, you just ... not clipping all the other lines to [i]avoid[/i] the ...
    joefish joefish February 2020 Games
  • The Silliest ZX Spectrum Games EverClearly there is a fine line between "silly" games and "not silly" games . Well that needs to be defined and the silly games clearly identified . So …

    ... door which had a number 57 on it which you examined ... />
    Or something along those lines anyway.
    dm_boozefreek dm_boozefreek March 2020 Games
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