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  • 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
  • Small batch of ZX-Unos outside SpainI am a member of the ZX-Uno team. We have launched a sucessfully crowdfunding campaign of 250 ZX-Uno, but they are all sold (mostly in Spain). I apol…

    ... />
    PAL uses 625 scan lines, and NTSC uses 525.
    vertical hold and just deal with ...
    andydansby andydansby May 2016 Sales
  • 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
  • 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
  • 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
  • Comp.Sys.Sinclair Crap Games Competition 2017As the creator of the second-least crap game in last year's competition (and the only mug stupid enough to agree to host it this year) I am proud/ash…

    ... line 10, and the lines from 9000 onward. Note ... bytes into memory. So lines 9130 and 9140 POKE in ... machine code.

    Lines 9140 and 9150 POKE just ... you want to add lines that POKE data to ... /> 40 REM Example of Vertical Attribute Scroll
    50 ...
    joefish joefish January 2017 Games
  • 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 %00010111;line 39 ;line 2B (17)
    ... db %00001001;line 4E ;line 39 (09)
    db %00001001 ... 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 %00010111;line 39 ;line 2B (17)
    ... db %00001001;line 4E ;line 39 (09)
    db %00001001 ... after base)+no. of lines inc base
    ;bit ...
    Arkannoyed Arkannoyed March 2017 Development
  • "ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…

    ... there are a lot of lines of code to execute every ... between 10^38 and 10^39) as the result of a ...
    The Mighty Dopethrone The Mighty Dopethrone March 2017 Sinclair Basic
  • 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
  • Finished with my dice rolling programTook me all day but I'm rather proud of it, simple though it is. Its up at Dropbox if anyones interested https://www.dropbox.com/s/qdgtfc0zyy94hxm…

    ... the embedded function tokens in lines 2 and 40.

    39 FOR d=1 TO 5 ...
    Battle Bunny Battle Bunny July 2017 BASIC
  • How to improve my program using oversized numbersI'd like my dice program to print out the number four times bigger than normal if possible. Anyone know how to do this? Or I could write a sub rou…

    ... the embedded function tokens in lines 2 and 40.

    39 FOR d=1 TO 5 ...
    Battle Bunny Battle Bunny July 2017 BASIC
  • New Game: SNAKE ESCAPE[b]SNAKE ESCAPE[/b] is a brand new game for the ZX-Spectrum! [img]http://i68.tinypic.com/9sqdj8.png[/img] [img]http://i65.tinypic.com/65odna.png[…

    ... 36 very difficult, while level 39 was again very easy. Btw ... and then draw/erase connected lines to figure it out. ;)
    BdR BdR July 2017 Brand new software
  • 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…

    ... Lardy Lady (2:41)
    39. The Bad Shepherds - White Riot ... :04)
    59. Spellbound - White Lines (1:57)
    60. The ...
    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…

    ... this:
    1. Get the vertical stripes on the screen.
    39 over the border and the ...
    Hikaru Hikaru September 2017 Development
  • A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…

    ... : control number
    ;Col 2: vertical coord
    ;Col 3: INK ... /> ld a,(ix+1) ;? down (vertical coordinate)
    rst $10

    cs_key cp 39 ;is it CAPS SHIFT?
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • ZX Spectrum +3 repairI have my first +3 here, and it needs repairs. Hoping someone here can help me out. When I power it on I get this screen with black and white line…

    ... the red and black thin lines in the border similar to ... stuck high or low
    39.A9.HL or stuck high ...
    patzik patzik October 2017 Hardware
  • 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
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