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<1234567…34>
  • 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…

    ... />
    There is a 50 Hz / 60 Hz mode switch in the Timex ... nothing to do with the 50 Hz / 60 Hz mode; that is simply ... SCLD pin which controls 50 Hz or 60 Hz mode selection. The default ... connected; this gives you normal 50 Hz PAL operation. Connect the jumper ...
    rga24 rga24 July 2013 Hardware
  • Need help from people with CRT TVs (50 Hz)I’m wrapping up the development of my [url="https://www.worldofspectrum.org/forums/discussion/54152/new-game-a-yankee-in-iraq-2017-a-shoot-em-up"]gam…

    ... the good-old 60 Hz vs 50 Hz LCD/CRT problem raises ... />
    1—every field (50 Hz)
    2—every other field ... (25 Hz)
    3—every third ... field (17 Hz)

    Now, ... this is to a real 50 Hz CRT TV). Option 2 ...
    Ast_A_Moore Ast_A_Moore March 2017 Development
  • The quest for true 50 HzAfter experimenting with interframe blending on Sinclairean, I wonder if someone has ever managed to get a custom Spectrum-friendly 50 (or better, 50…

    ... a custom Spectrum-friendly 50 (or better, 50.08!) Hz video mode on ...
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • 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…

    ... on your TV. So 50 frames per second (50 hz), actually means 25 ... with odd lines in one color and even lines in the ...
    RMartins RMartins August 2015 Development
  • damn 60 HzYou know I am really glad that ZX Spectrum is 50 Hz only. Not only the games always run in correct speed (unline Atari, Commodore, Sega, Nintendo...)…

    ... glad that ZX Spectrum is 50 Hz only. Not only the ... PAL CRT TVs handle the 50 Hz signal without issues which is ... Philips 14PT1354 is stable at 50 Hz but a bit shaky ... the fact is that 60 Hz picture is less crisp ... even when they support 60 Hz on the paper, are not ...
    maiki maiki January 2016 Chit chat
  • RGB OutputWas there ever a device available for the 48 that had a RGB output ? As an alternative , what about using a pc monitor (iirc these have seperate syn…

    ... based, with adjusters for each color:
    [URL]http://www.ppest ... , which is [B]50 Hz[/B] vertical, [B]15625 Hz[/B] horizontal. Don ...
    Marcelo Marcelo April 2007 Hardware
  • Sinclair +2 to VGA without VGA boxA few days ago someone in a Spanish forum mentioned that his friend claimed to have built a cable to connect his Sinclair +2 to a VGA monitor without…

    ... thing" :smile: , surelly using TV color decoder chips, the PIC is ... multiplies the Sync Frequencies (15625 Hz / 50 Hz, I think), or does it ...
    Marcelo Marcelo August 2007 Sinclair Miscellaneous
  • +2 / 128k via RGB on VGA (TFT)On my (bad layouted - I know) homepage [url]http://www.truppel-online.de/[/url] you can see some photos of RGB picture on VGA - TFT screens. I used a…

    ... vertical output frequency of 60 Hz which works with every TFT ... .
    Adaptor No. 2 has 50 Hz vertical output frequency which does ... and one capacitor in each color line (R,G,B). After ...
    ingo ingo October 2008 Hardware
  • Timex 1000 PAL conversionHi, a friend of mine sent me a Timex 1000 from the US. I was prepared for the NTSC/PAL issues so no surprise came to me when i got a shadowy dark scr…

    ... ... NTSC and PAL are for color encoding... and the TS1000 is ... frequency while PAL based on 50 Hz vertical frequency. There should be ... a monitor which accepts 60 Hz vertical frequency.

    Edit ...
    ingo ingo January 2009 Hardware
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... both emulators with a PAL 50 Hz CRT.[/quote]

    I ... DS is not having a multi-tasking OS, but I'm ...
    Fred Fred August 2009 Development
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    ... ! [B]Preview for 60 Hz only[/B] ([COLOR="Red"]set your desktop ... to 60 Hz before starting the emulator[/COLOR])

    Smooth ... screen rotation/scaling/panning (now 60 Hz, were 50 Hz ...
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • Re-inventing the wheel......TROOPER: POINT 5 First an apology, my level design sucks (well I'm not happy with it) so Trooper is taking an age to do. Anyway this game comes …

    ... the gfx style, atmosphere and color usage (despite the "subtle" reminiscence ... 't seem to move at 50 Hz. Given the quantity and size ...
    Madonna Mk 2 Madonna Mk 2 June 2010 Development
  • KING OF PONG: Pong revisitedHello everybody. I'm proud to announce you that my last personal project for the ZX Spectrum, "KING OF PONG" is available to download here at WOS si…

    ... refreshes the ball at *exactly* 50 Hz, and always off-the-main ... screen by seeing some details: color ball seems solid always (its ... second" that "to refresh at 50 Hz taking into account the scanline ...
    Ricardo Cancho Ricardo Cancho June 2010 Development
  • Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…

    ... stuff like border effects or multi-color (updating attributes while the scan ... 're trying to do a 50 fps game then you'll ...
    chev chev September 2013 Sinclair Miscellaneous
  • 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…

    ... high resolution timer;
    - fix multi-display support;
    - fix Wine ... compatibility issues;

    60 Hz is stable, but scrolls on ... 60 Hz looks not so smooth. Because ... no way to show 50 Hz on 60 Hz display just with skipping ...
    ZXMAK ZXMAK January 2015 Emulators
  • Emulator refresh ratesOkay, I'm going to ask a really lame, beginner question ;) Zx Spectrum refreshes screen 50 times per second. I'm running emulator on PC which says …

    ... are two ways to emulate 50 Hz on PC:

    1 ... if display working on 75 Hz, then show 2 frames and ... 60 Hz

    2. Frame resampling with interpolation - pixel color is ... depends on time difference with 50 Hz frame rate
    ZXMAK ZXMAK February 2015 Emulators
  • Emulator refresh ratesOkay, I'm going to ask a really lame, beginner question ;) Zx Spectrum refreshes screen 50 times per second. I'm running emulator on PC which says …

    ... ]Frame resampling with interpolation - pixel color is combined from two frames ... depends on time difference with 50 Hz frame rate [/QUOTE]

    Ralf Ralf February 2015 Emulators
  • 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…

    ... U.K. 625 line, 50 Hz monochrome TV system (both ... USA 525 line, 60 Hz monochrome TV system. As ... on the 525 line, 60 Hz monochrome TV system.
    ... So of course these are multi standard. But they confuse ... no need to make a multi standard board....

    1024MAK 1024MAK June 2016 Sales
  • 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…

    ... 's signal on the three color pins and the correct blanking ... up at any 4:3 @50 Hz mode on the HDMI box ...
    ivanb303 ivanb303 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…

    ... or NTSC. Using the 50 Hz / 60 Hz mode pin, the ... world except SECAM - normal 50 Hz 312 line PAL 4. ... -M and the Argentinian 50 Hz 312 line PAL-N ... these previous chips - 50 Hz / 60 Hz switchable and no colour ... So, if we leave the color crystal on the TC2048 at ...
    Renegade Renegade October 2017 Hardware
  • Limitations of emulationsYears ago at a trade fair, I got chatting to the guys who programmed [i]Gyron[/i]. They were demonstrating it and showed me an undocumented feature: …

    ... systems run at 60 Hz on LCD displays, while ... with a refresh rate of 50 Hz.

    The ... , each displaying a different color. This results in a ... to code) is the color brightness levels in 48K ... -bright variety of each color decreases as the they ...
    Ast_A_Moore Ast_A_Moore January 2019 Games
  • Limitations of emulationsYears ago at a trade fair, I got chatting to the guys who programmed [i]Gyron[/i]. They were demonstrating it and showed me an undocumented feature: …

    ... systems run at 60 Hz on LCD displays, while ... with a refresh rate of 50 Hz.

    The ... , each displaying a different color. This results in a ... to code) is the color brightness levels in 48K ... -bright variety of each color decreases as the they ...
    rich_chandler rich_chandler January 2019 Games
  • Timing... in the CSS faqI was looking at the CSS faq for something completely unrelated and noticed: [quote] Then the 192 screen+border lines are displayed, followed by 56 …

    ... long, which means that the '50 Hz' interrupt is actually a 3 ... .5MHz/69888=50.08 Hz interrupt. This fact can ...
    Winston Winston July 2008 Hardware
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    ...
    [*]Smooth screen updates and 50 Hz conversion
    [/LIST]
    The ... frequency is different from 60 Hz
    [*]Only a generic Trinitron ...
    Madonna Mk 2 Madonna Mk 2 February 2010 Emulators
  • Converting PAL +2b to NTSC[B]Hello my fellow WoS'ers[/B] I have a strange request for your knowledge and advice. A chap in the US would like to use a Spectrum +2B, however w…

    ... +2B, however without a multi-sync 50/60Hz TV the only other ... composite alongside the carrier from 50 to 60Hz without speeding up ...
    Zetr0 Zetr0 July 2013 Hardware
  • TZX/Taper headachesI've been doing a stocktake of all my Spectrum stuff, most of which I bought in a job lot a few years back, and there's a whole load of covertapes in…

    ... , surprise surprise, that's a 50 Hz mains signal, but it disappears ...
    The Mighty Dopethrone The Mighty Dopethrone December 2017 Games
  • CRT VGA monitor: 640x480@50Hz is possible?Anyone knows or has any information regarding a particular brand/model of VGA monitor capable of attaining such screen resolution at 50 Hz vertical r…

    Anyone knows or has any information regarding a particular brand/model of VGA monitor capable of attaining such screen resolution at 50 Hz vertical refresh rate? :-?
    Renegade Renegade August 2019 Hardware
  • Speed-up tool Pac Speed Tweaker for zx Pac-Man emulatorHello, The zx pacman emulator by Simon Owen is running at 83% of the arcade version speed. . It's because the game is rendered at 50 Hz (50.01Hz…

    ... the game is rendered at 50 Hz (50.01Hz exactly on the zx ...
    4Ocrisis 4Ocrisis February 2022 Games
<1234567…34>

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  • 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.<br /> <br /…
  • The quest for true 50 HzAfter experimenting with interframe blending on Sinclairean, I wonder if someone has ever managed to get a custom Spectrum-friendly 50 (or better, 50…
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