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Search Again :: Adv Search 1000 results in 0.020s
<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
  • 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…

    ... will receive work in PAL 50 Hz by default ( because most of ... 60 Hz but they have "canceled"

    To change PAL 50 Hz to ... NTSC 60 Hz, you only have ... to change the crytal for ...
    Jose_Leandro Jose_Leandro March 2012 Hardware
  • Change color from the starting screen?How can I change the background color from the starting screen permanently? I wish to have this for my ZX 48K. Micky

    How can I change the background color from the starting screen permanently? I wish to have this for my ZX 48K.


    Micky
    -Micky -Micky April 2010 Sinclair Miscellaneous
  • 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
  • 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 right colour ... from these previous chips - 50 Hz / 60 Hz switchable and no colour encoding ... will not be necessary to change the master clock crystal from ... /> 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: …

    ... with a refresh rate of 50 Hz.

    The ... , each displaying a different color. This results in a ... and the subtle ULA behavior change as it warms up, ... 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: …

    ... with a refresh rate of 50 Hz.

    The ... , each displaying a different color. This results in a ... and the subtle ULA behavior change as it warms up, ... 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 ... PCB and surrounding air will change the temperature of the ... nearby crystals, whose frequency will change slightly as a consequence. This ... too - their accuracy will change depending on how warm the ...
    Winston Winston July 2008 Hardware
  • 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
  • Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…

    ... />
    [quote]
    The 50 Hz interrupt is synchronized with the ... so it's safe to change something there. So the ... time in the 1/50 second time-slice at ... which means that the '50 Hz' interrupt is actually a 3 ... .5MHz/69888=50.08 Hz interrupt. This fact can ...
    rich_chandler rich_chandler December 2008 Emulators
  • 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
  • My first program - a vertical scrollerHi all, I'm new here. Nice to meet you all! A couple of weeks ago I decided to learn Z80 assembly language. I spent many hours in front of the Spec…

    ... . :)

    Scrolling: the only change I have made to the ... I do, the Spectrum's 50 Hz refresh doesn't result in ...
    riv riv March 2010 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…

    ... the Amiga is true smooth 50 Hz screen refresh rate ;) So when ... i press Home button and change video mode, file requester working ...
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • 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
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    ... =Pegaz;439625]You need to change some settings for real smoothness ... with frame rates different from 50 Hz is interframe blending.

    Hz, 1 out of every 10 ... the difference between 75 Hz and 60 Hz, you should be able ...
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • Help, How to RGB to VGA Connector on +2A ?Hi, How would I go about converting the RGB output connector from ZX Spectrum +2/A to VGA type of connector. I found this device [url]http://www.am…

    ... while PAL is based on 50 Hz vertical frequency. The converter can ... that it would convert a 50 Hz input vertical frequency into a ... 60 Hz output frequency. If it would ... page would be neccessary to change the scan rate.

    ingo ingo May 2010 Hardware
  • Help, How to RGB to VGA Connector on +2A ?Hi, How would I go about converting the RGB output connector from ZX Spectrum +2/A to VGA type of connector. I found this device [url]http://www.am…

    ... while PAL is based on 50 Hz vertical frequency. The converter can ... that it would convert a 50 Hz input vertical frequency into a ... 60 Hz output frequency. If it would ... page would be neccessary to change the scan rate.

    pkupcik pkupcik May 2010 Hardware
  • 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
  • Needing a Timex 1000 ULAHello all! A friend of mine needs a Timex 1000 ULA. Anyone willing to sell one or who could point me at a place where he could buy some at a fair co…

    ... the ROM display routines to change the number of blank lines ... screen -> lower refresh rate (50 Hz). Since that top & bottom ... BASIC processing is done, 60 Hz mode comes with a big ...
    RetroTechie RetroTechie March 2013 Hardware
  • Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…

    ... need to change this so that there's some '50 Hz' option, then ...
    zub zub April 2013 Emulators
  • Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…

    ... 50 Hz", "TK 90X+", "TK 90X+ 50 Hz", "TK 95" and "TK 95 50 Hz". Having 50 Hz ... and 60 Hz ... change idiom.

    [QUOTE=zub;697141]If we have separate 50 Hz ... and 60 Hz machines, though, ...
    Einar Saukas Einar Saukas April 2013 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
<1234567…34>

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