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Search Again :: Adv Search 1000 results in 0.030s
<1234567…34>
  • ZX Spectrum video waveformsAll work for this post was done on a ZX Spectrum issue 1 board (16k bytes of RAM only). This was what the Spectrum displayed on the TV screen: [i…

    ... ZX Spectrum issue 1, one video 'TV' line - Y video and composite video to ... ZX Spectrum issue 1, one video 'TV' line - Y video and composite video to ... ] is the inverted Y video (monochrome / luminance composite video) signal from the ULA ...
    1024MAK 1024MAK September 2016 Hardware
  • Settings on oscilloscope to see composite video signalHello, Learning a bit more about my new Owon digital 2 chan. oscilloscope. Would like to know what settings I should use to view a composite signal…

    ... signal.
    Under settings menu there's something like video/ ... amp; SECAM, etc..
    Composite video signal is analog, correct?
    Mainly ... to see the comp. signal itself and any interference/noise ... may be present in the signal.

    And ...
    thomas3120 thomas3120 December 2013 Hardware
  • ZX Spectrum Clock Signal Restorer Circuit[SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE] The circuit below is an experimental circuit. It has only been "tested" using…

    [SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE ...
    1024MAK 1024MAK June 2014 Hardware
  • 26h remaining on Kickstarter ZX Spectrum Video Game Cards26 hours remaining on Kickstarter ZX Spectrum Video Game Cards: Kickstarter ZX Spectrum Video Game Cards Trump cards for 36 classic ZX Spectrum …

    ... hours remaining on Kickstarter ZX Spectrum Video Game Cards:

    Kickstarter ...
    ZX Spectrum Video Game Cards
    Trump cards ... .kickstarter.com/projects/steveperks/zx-spectrum-video-game-cards

    [img ...
    Luzie Luzie August 2020 Sinclair Miscellaneous
  • InterferenceCan anyone tell me how to get rid of those horrible lines on the +2a? I'm sure these are interference from something but I just cant get rid of them.…

    I had a bad signal from My Spectrum signal modulator: through the help of ... a much clearer signal bypassing it, and using composite video signal. You can ... Games forum, under the thread 'Spectrum video signal quality', which dates back to ...
    Alessandro Tommasi Alessandro Tommasi January 2001 Sinclair Miscellaneous
  • Better Picture QualityToday I built a PSU and RGB-SCART monitor cable for my +3. However, I'm not too happy with the picture quality. It appears that there's like halos a…

    ... problems with the non standard spectrum video signal.
    Additionally when they expect ... . Sources with fast edges in signal may irritate that circuitry.
    ingo ingo June 2012 Hardware
  • Install a Sintech Video adaptor in a Spectrum+Hi all, I'm an old Commodore user (boo! hiss!) that's aquired his first Spectrum. Since my modern TV doesn't like the RF output of any old computer …

    ... !) that's aquired his first Spectrum. Since my modern TV doesn ... .de/home/spectrum-products.htm[/url]) which gives composite video out when ... needed is:
    1. the video signal going into the RF box ...
    Bacon Bacon June 2003 Sinclair Miscellaneous
  • Composite video on SPectrum 48KHi all I'm in Australia, and recently had a Speccy 48K sent over to add to my collection. I have had very little to do with Speccys (it was most defi…

    ... the signal directly from the inside) of getting a composite video signal out ... of the Spectrum? I believe there ... is a composite signal on the ...
    billlagr billlagr January 2005 Sinclair Miscellaneous
  • ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…

    ... /> - All ZX Spectrum 128K models: detaching audio from the video signal for better ... picture
    - ZX Spectrum +2: no video-out ... transistors
    - ZX Spectrum +2A / +2B / +3: creating a composite video output signal
    bverstee bverstee January 2012 Hardware
  • Strange layout of Spectrum video memoryHello, does anyone have an idea why the Spectrum's video memory has such a strange layout? I understand that a resolution of 256x192 is an easy mean…

    ... an idea why the Spectrum's video memory has such ... it easier to address video memory. I also understand ... a piece of (non-Spectrum) electronics that generates a ... the same borders the Spectrum has. This is why ... I thought that the Spectrum's line organisation might ...
    J?rg Pleumann J?rg Pleumann August 2004 Sinclair Miscellaneous
  • 48k spectrum, video problems help neededHi All, I have been browsing this site for a long time and today i have finally registered and am after some help!! I have a 48k speccy and the vid…

    ... a 48k speccy and the video is not working, all the ... you can see in the video file which you can see ... /> You can see when the spectrum turns on it shows the ... the spectrum is still fully working as I prove in the video ...
    mattstroud mattstroud September 2005 Sinclair Miscellaneous
  • Another ZX Spectrum VideoI only shot this over an hour ago. [url]http://video.google.com/videoplay?docid=2011691753416908964[/url] Megastorage for the Spectrum. If I had d…

    ... ago.

    [url]http://video.google.com/videoplay?docid=2011691753416908964 ... ]

    Megastorage for the Spectrum.

    If I had ... /> It's not really a video camera so get shooting your ...
    Geoff Geoff July 2006 Sinclair Miscellaneous
  • Edge-connector video...Been reading some old speccy books recently that were surplus to requirements at the local library...:-) ...and in one book it mentions that the ed…

    ... edge-connector carries the YUV video-signal as well as the data ... the possibility of a decent video-feed from a 48K spectrum?
    bobs bobs February 2007 Hardware
  • Spectrum +2 power supply - voltages on each pin..?My +2 suddenly stopped working yesterday. It was working fine earlier in the day and now the power light will not go on, nor will the tape drive and …

    ... drive and there is no video signal at all. Having run a ... power supply itself not the Spectrum side) do seem to be ...
    STKD STKD January 2008 Hardware
  • Spectrum+ - multiple issuesHi all Yesterday I picked up a Spectrum+ (via eBay) to add to my collection. Now, before any of the names I recognise from the last few months of l…

    ... /> Yesterday I picked up a Spectrum+ (via eBay) to add to ... is some drift on the video signal which is clear but in ... Speccy into my first ever Spectrum+ case, but if there are ... with repairing vintage radio/tv/video etc and has said he ...
    szeliga szeliga April 2009 Hardware
  • Sinclair 128 K ZX Spectrum +2 faultyI have a problem with my new Sinclair 128 K ZX Spectrum +2. The title screen shows a picture that has a convergence error. Around the signs are yello…

    ... new Sinclair 128 K ZX Spectrum +2. The title screen shows ... . I use it with the video signal from the RGB connector.
    -Micky -Micky January 2010 Hardware
  • Spectrum Video Circuitry.Wotcha, I've looking at the circuit diagram of the speccy video circuitry (Hey, I'm snowed in, and theres only so much Civ IV i can stand :p), and I…

    ... circuit diagram of the speccy video circuitry (Hey, I'm snowed ... to -5v when the Y signal is high (Which i assume ...
    spodula spodula January 2010 Hardware
  • Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…

    Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that the video signal can go into Spectrum, ULA and then to standard RF socket?
    maiki maiki March 2010 Hardware
  • Problems with a gray ZX Spectrum +2Hello. First of all, thank you for receiving me on this forum. I'll try to help everybody as well as I can Said that, I want to do two questions abo…

    ... , it outputs a very low video signal, so it appears in black ... worster video). I tried bypassing the 75Ohm resistor inside the ZX Spectrum ... , and boosting the video signal by reducing the ...
    Gren Sacher Gren Sacher September 2011 Hardware
  • Revisiting Spectrum CPU clock regenerationWarning: This post will be a bit nerdy :-) Some time ago, I experimented with phase locked loop circuits as a possible way to regenerate the Spectru…

    ... these out from the composite video signal). Ah! Solved! Not ... nicely regenerate the Spectrum's clock signal despite contention. However ... the next Spectrum clock cycle, the regenerated signal is already ... /> Actually, the Spectrum's 3.5MHz signal here is the worst ...
    Winston Winston September 2012 Hardware
  • Spectrum +3 to Joytech PS2 8" LcdHi, I?m making some cables so I can connect my old computers to a Joytech PS2 8" Lcd. Starting with my Spectrum +3 I made a RGB and a composite cab…

    ... .
    Starting with my Spectrum +3 I made a RGB ... the stage of getting video from the +3 through ... I connected a Spectrum 48K by composite signal and the image ... is different between the 48k video signal and the +2 and ... +3 video signals that made te ...
    AlfaRomeo AlfaRomeo January 2013 Hardware
  • Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…

    ... been playing around with this Spectrum 48k I got inside a ... .uk/2011/10/zx-spectrum-48k-composite-video-mod.html[/url]
    video video (which is 5.5Mhz I ... description here on how the video signal is generated:
    [url]http ...
    RobeeeJay RobeeeJay March 2013 Hardware
  • ZX spectrum 128K + 2 (Grey one :)Hi all, I'm trying to revive a dead ZX 128K +2 (the grey one). The regulator was damaged and seemed to be feeding 7.8Volts onto the pcb. Yikes ! I…

    ... , i would have an acceptable video signal. The TEA2000 pins 1.3 ... looks like video, even pin 6 is outputting a signal.... Strange. ... the-adventure-of-the-128k-spectrum-with-no-display/[/url]

    With the spectrum 48K it was possible to ...
    DenisM DenisM August 2013 Hardware
  • Ben Heck modifies a Zee X Spectrum.Gahh, one of the differences between Americans and Europeans right there in the title. Anyway, we know better ;) ...and this isn't about that anyway.…

    ... gotten hold of a Spectrum and wants to modify ... well as improving the video signal and a few other ... /groups/speccy4ever/?fref=nf"]Spectrum 4 Ever[/URL][/B] ... is hacking up a Spectrum, but there are so ... preconceptions that long-time Spectrum owners has. It's ...
    Sokurah Sokurah July 2014 Hardware
  • I recapped my 128K toastrack, installed stereo kit and detached audio from video, but...Hello fellow forumers! I'm seeking for help: I've finally decided to change all electrolytic capacitors of my 6U (with all Panasonics 105oC)... Af…

    ... . Then I detached audio from video signal by lifting the right side ... />
    When I powered my Spectrum, everything worked OK, except that ... means that every video output is affected! Spectrum was OK before with ...
    geosiou geosiou October 2015 Hardware
  • velleman k8036 - Video signal cleaning?http://www.velleman.eu/products/view/?country=es&lang=en&id=348080 Although velleman reports having discontinued this kit and its primary use was …

    ... it also works for "normal" video cleaning.

    Once it ... perform the composite video/ s-video mod for the spectrum, I was wondering ... if some video quality uprate would ...
    Renegade Renegade November 2015 Hardware
  • Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …

    ... less long winded than 'the Spectrum under repair' or similar). ... from a working issue 6 Spectrum. The odd behaviour was ... unchanged. The issue 6 Spectrum functioned perfectly when fitted with ... normally occurs in a proper video signal. For example, I explicitly ...
    Zorn Zorn February 2016 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 …

    Hello Spectrum World

    I ... 't lock on the video signal and I have to ... great book "The ZX Spectrum ULA: How to design ... typical voltage of the composite video signal which goes to the ... br />
    My composite video ouptut whith transistor mod
    paf paf November 2018 Hardware
  • I'm making a videoHi, i'm new on the forums here (i've been checking out and using the websites amazing features for ages though) i've decided to make another spectrum…

    ... ve decided to make another spectrum video for youtube, as i ... after i made my first video [url]http://www.youtube. ... make "another 100 ZX Spectrum games" video with what i had ... games for my new video and have hit a ... omissions from my first video so that i can ...
    jesus 666 jesus 666 January 2008 Games
  • Bad composite video cable?Last week I received a 128K from Rich Mellor. I know he tested everything, which leads me to believe that the issues I'm having are related to my cur…

    ... know how to display the signal properly. If I try to ... decided to try the composite video input on the TV card ... Dscaler says there's no video signal (I did change the source ...
    zxbruno zxbruno May 2008 Hardware
<1234567…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
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