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<1…20212223242526…34>
  • Meddling with the RGB signal - any experts out there?A few questions, if anyone knows - is it OK to split the A/V signal and feed it to two TVs? I'm assuming that it's not OK to do this with the RGB …

    ... Sync', and then most cables just feed in the Composite Video signal ... to be a regular composite video signal going in, and the ... to just feed in a sync signal has been tacked on ... generate text overlays for a video player or satellite receiver etc ...
    guesser guesser October 2016 Hardware
  • Spectrum +2 various problemsHey there, I just recently acquired a Spectrum +2 and it's got various problems with it. First off, I get a rolling picture through both RGB and comp…

    It's using composite video for sync, but for some odd reason ... it has the composite sync signal going to pin 16 ... ground. I removed the composite sync wire from pin 16 and ...
    ApolloBoy ApolloBoy October 2016 Hardware
  • Spectrum +2 various problemsHey there, I just recently acquired a Spectrum +2 and it's got various problems with it. First off, I get a rolling picture through both RGB and comp…

    Maybe that composite video for sync is the problem? I don't remember how my cable is wired. I'll check that when I get back home.
    mityay mityay October 2016 Hardware
  • Spectrum +2 various problemsHey there, I just recently acquired a Spectrum +2 and it's got various problems with it. First off, I get a rolling picture through both RGB and comp…

    I checked the cable at home. It is wired with csync, not composite video as sync. So I would try rewiring the cable and see if that helps. Just my wild guess.
    mityay mityay November 2016 Hardware
  • Spectrum musical capabilities ?This came up on my FB feed and it combines another long time hobby of mine and it's music production :) https://youtu.be/lwCVQvgLSno So the 128…

    ... anyone has managed to MIDI sync one. I know that good ... the Casio CZ101 in the video which despite how it looks ...
    ivanb303 ivanb303 December 2016 Sinclair Basic
  • A strange issue with a +2 SpectrumHello everyone! I am having a problem with one of my Spectrums, a +2 Grey Case. It has a strange picture on the composite video output, like doub…

    ... sync signal is okay.

    So try using the composite video ...
    1024MAK 1024MAK December 2016 Hardware
  • New Game: A Yankee in Iraq (2017). A shoot-em-up.Last year, I [url="https://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992"]resurrected my old shoot-em-u…

    ... emulators (when they sync the Speccy’s video to the display’s ...
    Ast_A_Moore Ast_A_Moore March 2017 Brand new software
  • Redesigning the ZX Spectrum 128k - A lifelong dreamHello, I am myPinballs (Jim) and i run a small business here in the uk making replacement 8-bit hardware pcbs for arcade pinball games as well as…

    ... includes both audio and rgb video output which simplifies cabling again ... with both h and v sync signals which allows easy usage ...
    myPinballs myPinballs May 2017 Hardware
  • 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…

    ... serial data stream. The sync signals are like start and ... analogue video systems use basically the same method. The sync signals ... line, a horizontal/ line sync signals the display that the ... been drawn, a vertical sync / field sync signals to the display ...
    1024MAK 1024MAK August 2017 Hardware
  • I'm totally confused now, RGB, composite, SCART what?Hello everyone. I have a +2A coming from the UK and I am wondering how I'm going to connect it to a modern TV. The TV has inputs on the back that ar…

    ... RF out this has the video signal modulated onto a ... was a Yellow for video and White and Red ... sound channels.
    The video signal is still combined onto ... 48 outputs this type of video signal hence, they can ... outputs R,G,B and Sync on separate pins giving ...
    ivanb303 ivanb303 August 2017 Hardware
  • I'm totally confused now, RGB, composite, SCART what?Hello everyone. I have a +2A coming from the UK and I am wondering how I'm going to connect it to a modern TV. The TV has inputs on the back that ar…

    ... synchronisation signal, vertical (field) sync and luma (monochrome intensity) ... a (slightly degraded) composite video signal.

    ... the interconnection of commercial video equipment. Please read ... which case S-Video or composite video has to be ...
    1024MAK 1024MAK August 2017 Hardware
  • I can't get my +2B to work over RGB to SCART.Hi so I have a black +2B and no matter what I do I get a black screen using the RGB-SCART scart cable (specific for the model ) and I'm using a SCART…

    [quote="ivanb303;921824"]So in the schematics it's pin 4 on the peritel connector marked NCSYNC. What should the output be here ?[/quote]
    A composite sync signal. Essentially composite video without the video, just the sync pulses.
    guesser guesser September 2017 Hardware
  • 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…

    ... where the execution of the sync loop fits entirely into side ... that such as in your video. This value is then effectively ...
    Hikaru Hikaru September 2017 Development
  • Spectrum 128k +2 video issueHi Guys, I just got a Spectrum 128k +2 from ebay. It came with its power supply and the scart video cable. The machine is working pretty good but …

    ... three RGB colour video channels,
    [*]the combined sync signal
    [*]the ...
    1024MAK 1024MAK September 2017 Hardware
  • Spectrum 128k +2 video issueHi Guys, I just got a Spectrum 128k +2 from ebay. It came with its power supply and the scart video cable. The machine is working pretty good but …

    ... wire --> pin 20 Composite sync
    Pin 5 --> ... --> pin 11 Green video signal
    Pin 7 ... --> pin 15 Red video signal
    Pin 8 ... wire --> pin 7 Blue video signal
    [/code]
    sync. If LK3 is made ...
    1024MAK 1024MAK September 2017 Hardware
  • 50 Hz / 60 Hz switch in Timex Computer 2068I'm not sure if this is common knowledge, I've certainly never read about it online, though it may be documented in Portuguese or Polish. There is a…

    ... 60Hz will produce RGB+Composite Sync@60 Hz, viable to be ... I have done an S-video mod on the Inves Spectrum ... the MC1377 colour encoder. S-video on the TC2068 should look ...
    rga24 rga24 October 2017 Hardware
  • Some questions about the Timex TC2048/TC2068I have been doing some research about the specs of these 2 machines but I suppose it would be better to ask for advice in the forum since I have neve…

    ... changes made for the new video modes and for interfacing the ... port. Port 0xff controls the video mode. Some sw on the ... a circuit to generate the sync signals for rgb.
    https ...
    Alcoholics Anonymous Alcoholics Anonymous January 2018 Hardware
  • Some questions about the Timex TC2048/TC2068I have been doing some research about the specs of these 2 machines but I suppose it would be better to ask for advice in the forum since I have neve…

    ... changes made for the new video modes and for interfacing the ... port. Port 0xff controls the video mode. Some sw on the ... a circuit to generate the sync signals for rgb.
    https ...
    Black_Cat Black_Cat January 2018 Hardware
  • Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…

    ... electrical noise or artifacts in video display like those.
    When ... 1 models, but usually changing sync from cvbs to CompSync cures ...
    Renegade Renegade January 2018 Hardware
  • I can't get my +2B to work over RGB to SCART.Hi so I have a black +2B and no matter what I do I get a black screen using the RGB-SCART scart cable (specific for the model ) and I'm using a SCART…

    ... note that the sync, the red, green and blue video channel signals ...
    1024MAK 1024MAK March 2018 Hardware
  • ZX-Uno moddingStarting with ZX-Uno case modding I have not yet received my ZX-Uno yet (it is in the post) but I know that I will have to do at least one mod …

    ... whole number to achieve the video frequency, and 59.5 is ... 60 for most monitors to sync to.

    My Sinclair ...
    colonel32 colonel32 May 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 …

    ... bursts during vertical sync, making the vertical sync much longer and ... discrete components especially making the sync longer (one way could ... lines of the border into sync).
    [b]--> Hooking ... .
    [b]--> S-Video modification:[/b] no idea if ...
    paf paf November 2018 Hardware
  • No video on Spectrum +2BI have a Spectrum +2B that I bought real cheap without any cables. I made a power adapter for it using an old ATX PSU I had laying around, it's curre…

    ... all. Simply use the RGB+sync from the DIN connector on ... in)
    4 (CSYNC) 20 (video in)
    7 (red) 15 ...
    Ast_A_Moore Ast_A_Moore February 2019 Hardware
  • RGB SCART Lead for +3 Spectrum. Picture issues. (Fades to Black, Rolling, Sync Issues)Hi there, I recently ordered a Sinclair Spectrum 128 +2 & +3 RGB Scart Cable (Ean13: 0705693506845) from coolnovelties.co.uk to use my Sinclair Spect…

    ... PVM, 2054QM actually REQUIRES separate sync, it's just that the ... with it's built in Sync Separator. So in effect I ... ://www.retrogamingcables.co.uk/audio-video-accessories/scart-adapters/sony-pvm ...
    tomlee80 tomlee80 February 2019 Hardware
  • 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…

    ... and forth between the two video RAMs at the right time ... omits the top row for sync'ing. Not sure if this ... = 160T available for writing to video RAM, yet a quick check ...
    Dax Trajero Dax Trajero August 2019 Development
  • 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…

    ... buffer of 32x24 bytes into video ram starting at 5800h
    video ram starting at 5800h. I ... 32x24 unsync'd or 32x23 sync'd up, but its also ... to PUSH registers to the video ram as you're moving ...
    Dax Trajero Dax Trajero August 2019 Development
  • Need some help building a cable for Spectrum 128k +2 to US Commodore 1084S-PHello WoS users! Does anyone have a diagram detailing how to build a cable to go from the Spectrum 128k +2 (grey) to a Commodore 1084S-P (US version…

    ... in RGB mode it can sync at 50hz, though.

    video-output-analogue-or-digital#latest
    Renegade Renegade September 2019 Hardware
  • Need some help building a cable for Spectrum 128k +2 to US Commodore 1084S-PHello WoS users! Does anyone have a diagram detailing how to build a cable to go from the Spectrum 128k +2 (grey) to a Commodore 1084S-P (US version…

    ... not used
    6 - Green Video (TTL) - connect to 1084 digital ... using composite sync for horizontal and vertical sync inputs may ... not used
    4 - Composite sync (*see note) - connect to 1084 ... />
    Note: The Composite sync (on pin 4) signal voltage ...
    1024MAK 1024MAK September 2019 Hardware
  • Need some help building a cable for Spectrum 128k +2 to US Commodore 1084S-PHello WoS users! Does anyone have a diagram detailing how to build a cable to go from the Spectrum 128k +2 (grey) to a Commodore 1084S-P (US version…

    ... "special" requirement concerning the sync signal you feed to it ... a perfect picture with Composite Sync or maybe even with ... Horizontal / vertical sync separated.)

    Have ... in spite of the spectrum video output signal being TTL level ...
    Renegade Renegade September 2019 Hardware
  • Video output questions...Two questions... [QUOTE]1. The yellow and blue colours seem out of phase on the display. Is this normal for an RF connection to the TV/monitor?[/QUO…

    Just a reminder https://coolnovelties.co.uk/ has the powered version SCART cable that fixes the speccy video output sync issue. You have to specifically ask for it.
    Crimbo Crimbo November 2019 Hardware
<1…20212223242526…34>

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