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<1…21222324252627…34>
  • RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…

    ... with pin 17 scart (composite video ground) so not sure if ... small amount of picture quality loss.
    Ox. Ox. January 2015 Hardware
  • RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…

    ... with pin 17 scart (composite video ground) so not sure if ... small amount of picture quality loss.[/QUOTE]

    I have ...
    chinnyhill10 chinnyhill10 January 2015 Hardware
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... /> [*] New VBlank Sync implementation that makes very smooth video, without jitter on ... processor VBlank sync works with some limitations;

    [*] New video filter ... scan-lines;

    [*] New video scale - "Square Pixel Size", that ...
    ZXMAK ZXMAK January 2015 Emulators
  • RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…

    ... to consider besides the actual video and sync when it comes to ...
    guesser guesser January 2015 Hardware
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... ;811949]New VBlank Sync implementation that makes very smooth video, without jitter ... the old single processor VBlank sync works with some limitations;[/QUOTE ...
    Pegaz Pegaz January 2015 Emulators
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... :)
    New VBlank sync tested on 75 Hz display ... frequency for 50 Hz video. 75 Hz is much ... I recommend to use VBlank sync with display that works ... USP uses the time based sync.

    Unfortunately ... br /> It seems that videocard sync is not good for 60 ...
    ZXMAK ZXMAK January 2015 Emulators
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... ]I recommend to use VBlank sync with display that works on ... , I get a slightly jerky video and ocassional audio stops. My ...
    mcleod_ideafix mcleod_ideafix January 2015 Emulators
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... , I get a slightly jerky video and ocassional audio stops. My ... is not possible with VBlank sync on that display.
    But ... you can disable VBlank Sync in the View menu.
    With disabled VBlank Sync, synchronization will be done on ...
    ZXMAK ZXMAK January 2015 Emulators
  • ZXMAK2Hi everyone, I'm glad to present you the latest version of my emulator - ZXMAK2 :) There are a lot of changes were made since the last topic about t…

    ... .5.37912[/URL]

    - sync stability improvements;
    - fix MaxSpeed ... I will try to add video filter to imrove scrolls perception ...
    ZXMAK ZXMAK January 2015 Emulators
  • 3.4 Inch TFT with 48k Spectrum....hmmm?Hey guys, So I have been playing around with the idea of using a small LCD with composite input for a 48k Speccy. I got hold of one of these relat…

    ... a direct connection from video input to video output bypassing the modulator ... voltage levels so the negative sync signal is closer to 0V ...
    mcleod_ideafix mcleod_ideafix January 2015 Hardware
  • ZX Spectrum+ video ? red on green problemThis is my first post on the forum, so let me introduce myself. I am retired for several years. For 30 years I have been a fan of the ZX Spectrum. I …

    ... oscillator (14MHz) not being in sync with the PAL clock used ... more detail:
    [I]?S-video eliminates dot crawl. Dot crawl ... the compromises inherent in composite video - the combining of black and ... these two signals to S-Video input of my TV. Now ...
    Boleslaw Jamroz Boleslaw Jamroz January 2015 Hardware
  • 3.4 Inch TFT with 48k Spectrum....hmmm?Hey guys, So I have been playing around with the idea of using a small LCD with composite input for a 48k Speccy. I got hold of one of these relat…

    ... a direct connection from video input to video output bypassing the modulator ... voltage levels so the negative sync signal is closer to 0V ...
    RSwipeCA RSwipeCA February 2015 Hardware
  • 3.4 Inch TFT with 48k Spectrum....hmmm?Hey guys, So I have been playing around with the idea of using a small LCD with composite input for a 48k Speccy. I got hold of one of these relat…

    ... )
    Horizontal (line) sync
    Vertical (field) sync
    Chrominance (colour) ... to 100uF) allows the composite video signal through.

    ... a bodge really. In most video amplifier designs, you want ... get one of the two video modules from Sell My ...
    1024MAK 1024MAK February 2015 Hardware
  • Scart issues with a 2AAnyone else have problems with scart leads with Spectrum 2A's?. I tested mine with three Samsung TV's ( all around 2/3 year old) , and it gave me a …

    ... +2. The problem is that sync signal is very noisy which ... /limited-batch-of-new-s-video-adapters/msg94123/#new"]http://www ... /limited-batch-of-new-s-video-adapters/msg94123/#new[/URL]
    chinnyhill10 chinnyhill10 February 2015 Hardware
  • No display on a 128 toastrackHi All, I just bought a 128k off ebay with the usual, "it worked last time I used it", so I read into this "it does not work". True enough, it does n…

    ... /> So the actual fault was loss of the extra supply rails ... and -12V).
    The composite video section needs a +12V supply ... SCART leads use the composite video signal for the synchronization signals ... your pictures, all the visible video picture is there, but ...
    1024MAK 1024MAK February 2015 Hardware
  • DVD Ripping softwareI have a load of old VHS tapes that I've put onto DVD and I want to rip them into my pc to put on an external had drive and I need a free program tha…

    ... 's formatted as "compliant" DVD-Video, but as regular files in ... files, you'll have some loss of quality regardless of what ... on harddrive, you can encode video files [I]as needed[/I ... ... that should work for DVD-Video too, as long as no ...
    RetroTechie RetroTechie February 2015 Chit chat
  • Microdrive-Microdrive incompatibility?Hi All! Finally I could get enough Microdrives and connecting blocks (or cable replacement) to make the largest storage configuration of the classic…

    ... . I measured the resistance, signal loss and noise as more and ... yours have already seen the video on the rather reliably working ...
    jimre jimre July 2015 Hardware
  • Speccy tape on IOS iPhone and lcd monitor questionHi ive just bought a 48k spectrum to relive a bit of my programming youth . I noticed there's a Speccy tape app that should link to games on this …

    ... "VGA" monitors, they use different sync and scan rates (frequencies) and ... Spectrum to produce a composite video output, and buy a standards ... you need is a composite video to VGA converter. Try eBay ... CRT) that has a composite video input instead. Then you just ...
    1024MAK 1024MAK July 2015 Sinclair Miscellaneous
  • 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…

    ... the hack do PAL televisions sync to that ?[/quote]

    sync pulse. Once you start sending video lines the ... field with just an extended sync pulse to signal the start ... a TV that refuses to sync to that so clearly it ...
    guesser guesser 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…

    ... struggle, because the Speccy's sync pulse is a bit odd ... it comes to the actual video timings.
    It's entirely ... refuse to sync. Certainly I have a horrible cheap USB video capture ... thing off ebay that won't sync to ...
    guesser guesser August 2015 Development
  • I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…

    ... display.
    Third, if the video RAM was write only, how ... the "shadow screen" to the video RAM, it may take too ... time before the next vertical sync. Any write delay would therefore ...
    1024MAK 1024MAK August 2015 Hardware
  • 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 …

    ... or the composite video to the GBS's sync input

    sync, particularly with what's coming ... is to use a simple sync stripper chip to remove the ...
    Questarian Questarian August 2015 Hardware
  • Recreated ZX Spectrum Release date?!?Hi All, I ordered a Recreated ZX Spectrum from Amazon. The release date has since changed to 26th April (3rd time it changed). In the meantime, El…

    ... Recreated ZX Spectrum (Operating Guide Video) Android app (for selected ...
    The operating guide video app does not include any ... ZX Spectrum (Operating Guide Video) Android app (from Google ... balance, we consider the loss of goodwill associated with this ...
    Mousey Mousey September 2015 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…

    ... check for 12v (to the video circuity)? In what pin of ... concerned, do you mean the SYNC output from the ULA (pin ...
    geosiou geosiou October 2015 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…

    ... ... I had already seen that SYNC signal from ULA goes to ... so bad, jerky and with loss of color most of the ...
    geosiou geosiou October 2015 Hardware
  • Video Problem - Spectrum 48kYet again I come seeking help.... Can anyone point me in the direction of anything that explains the video generation circuit on the Spectrum? I'v…

    ... colour encoder.

    The sync is in the Y output ... other side to a composite video input on your TV / monitor ...
    1024MAK 1024MAK November 2015 Hardware
  • PUSH scrollers 3[url=https://drive.google.com/file/d/0B-KEeni1WXmoYk9Dek1zVnd6Rk0/view?usp=sharing]CATS - Faith edition (example)[/url] Hello and welcome to the w…

    ... program to synchronize with the video beam...


    [code ... .l $dff004,d0 ; Test the video beam for vertical position 303 ... #$1ff00,d0 ; to sync the code to the video refresh rate
    Mysterion Mysterion November 2015 Development
  • Best composite mod informationJust got my 16K (Issue 3) working. I'm in NTSC land so I need to run a composite signal through my PAL<->NTSC converter. I know there are a ton o…

    ... displays is just black video from the composite sync output. My assumption ... being switched getting into the video input pin.
    guesser guesser November 2015 Hardware
  • Why is RGB the best?Sorry, I know my question may sound odd but I have been doing some reading lately and this has struck me. This is what we know: RF -> CVBS -> …

    ... or luminance) and synchronization (sync) information. Y = 0.2126 ...
    The S-video cable carries video using two synchronized signal ... green, blue) analog component video standards (e.g., RGBS, ... of carrying non-interlaced video and/or resolutions higher ...
    rtunes rtunes December 2015 Hardware
  • Spectrum +2 with CM8833 MK-II monitor (RGB)Hello all, This weekend I decided to resurrect my old 128K Spectrum +2 (grey model). I plugged it into an LCD TV via RF, but the picture is rathe…

    ... to see what the COMP SYNC and video signals looked like. I ... hooked up my 'scope to COMP SYNC ... , it looks like the COMP SYNC line is very glitchy? Surely ...
    BJH BJH January 2016 Hardware
<1…21222324252627…34>

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