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<1234567…34>
  • Need advice choosing one of these optionsA few spanish friends are willing to help me build and program the ethernet interface for the Speccy. Here are the possibilities. Any advice would be…

    ... resistors, an RJ45 connector, a quartz crystal and a few condensators(?).
    zxbruno zxbruno April 2007 Hardware
  • 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 …

    ... a well known property of quartz crystal oscillators. Crystals aren't perfectly ...
    Winston Winston July 2008 Hardware
  • Investronica Inves Spectrum +Hi, Has anyone here ever heard of the Investronica Inves Spectrum +? This site [url="http://www.silicium.org/uk/sinclair/inves.htm"]http://www.sili…

    ... a very useful cooler. The quartz crystal system clock gives 17.345 ...
    na_th_an na_th_an June 2005 Sinclair Miscellaneous
  • 2 Spectrums (synched) playing AY tunes?After listening to a few Turbo Sound FM MP3s, I wondered... For those of us who can't build this card, couldn't we synch 2 128Ks and play these tunes…

    ... Spectrum is clocked by a quartz crystal and therefore should stay in ... of time. A fairly crummy quartz crystal oscillator should have an accuracy ... more timing upset than the crystal clock.
    Winston Winston April 2008 Sinclair Miscellaneous
  • Multiplayer online Speccy gaming - an actual technical proposalAs is so often the way, [url=http://www.worldofspectrum.org/forums/showpost.php?p=274215&postcount=121]trying to put into words why something is impo…

    ... accurate than a 3.5Mhz quartz crystal... (well, I suppose they do ...
    gasman gasman May 2008 Emulators
  • Tea2000Greetings! Prompt analog PAl/NTS Encoder - TEA2000? Has broken it is necessary to substitute, and I have not found the given type in free sale.

    ... ); a separate 17.7344 MHz quartz crystal must be provided, or (better ...
    secarica secarica 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…

    ... the accuracy of even cheap quartz crystal oscillators is such that to ...
    Winston Winston August 2009 Development
  • 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…

    ... the accuracy of even cheap quartz crystal oscillators is such that to ...
    Fred Fred August 2009 Development
  • 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…

    ... do with the various different crystal oscillators in the PC, the ... your hypothetical example, a cheap quartz crystal typically has an accuracy of ...
    Winston Winston August 2009 Development
  • 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…

    ... do with the various different crystal oscillators in the PC, the ... your hypothetical example, a cheap quartz crystal typically has an accuracy of ...
    Fred Fred August 2009 Development
  • Question about ZX81 componentAfter I cleaned and replaced some components (7805, two electrolytic caps) with fresh ones, and replaced the RF board with a composite one, on an iss…

    It's a ceramic resonator. I think Pilsener is right, I seem to recall that the ZX81 uses a resonator instead of a quartz crystal for its CPU etc. timing.
    Winston Winston December 2010 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…

    ... is cut a sheet of quartz crystal and fit a pair of ... round and round inside the quartz eventually reaching the other transducer ... and, assuming your block of quartz is exactly the right size ...
    guesser guesser February 2013 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…

    The use of the signal in PAL 60 will not allow you to color in the TV is PAL-M or NTSC. For color you have to replace the quartz crystal resonator X1.
    Black_Cat Black_Cat October 2017 Hardware
  • 35Mhz crystal wantedI am looking for a 35Mhz crystal to replace a missing one on my +2A. If you have one on a damaged spectrum could you let me know? I will pay a smal…

    I am looking for a 35Mhz crystal to replace a missing one on my +2A. If you have one on a damaged spectrum could you let me know? I will pay a small fee of say ?1 if you wish.
    Fraser Fraser December 2000 Sales
  • crystal games.can anyone add any more games to this list that crystal released in the 'white inlay' style packaging : Invasion of the body snatchas cosmic guerill…

    ... games to this list that crystal released in the 'white inlay ...
    GP GP December 2002 Games
  • Was it Search for the Crystal Sphere??Does anyone remember an adventure game, I think it was called "Search for the Crystal Sphere". You started up in a deserted town of about 10 locati…

    ... was called "Search for the Crystal Sphere".
    You started up ...
    steveinuk steveinuk June 2003 MIA/STP/SDP
  • Dark Crystal and Sabre WulfI was watching Dark Crystal a few days ago and I noticed when the title appears at the start of the film, it uses the same design as the cover of Sab…

    I was watching Dark Crystal a few days ago and ...
    Ian Hamilton Ian Hamilton January 2005 Sinclair Miscellaneous
  • Black CrystalI think the Mastertronic re-release of Black Crystal doesn't exist. It's more than likely been a typo when the Master Vision re-release was concerned…

    I think the Mastertronic re-release of Black Crystal doesn't exist. It's more than likely been a typo when the Master Vision re-release was concerned.

    Steve
    Gilby Gilby February 2007 Infoseek database
  • Crystal Computing Monitor and DisassemblerI would like to obtain manual for Crystal Computing's "Monitor and Disassembler". I had no luck browsing the internet.

    I would like to obtain manual for Crystal Computing's "Monitor and Disassembler".
    I had no luck browsing the internet.
    ZX64 ZX64 July 2007 Development
  • Black Crystal - Mastervision re-releaseI have a copy of the Mastervision re-release of Black Crystal (I loved this on the ZX81) - it comes in a standard sized cassette case, but the inlay …

    ... Mastervision re-release of Black Crystal (I loved this on the ...
    rwap rwap January 2010 Games
  • Crystal Kingdom Dizzy[url]http://cgi.ebay.co.uk/Crystal-Kingdom-Dizzy-ULTRA-RARE-/140476850470?pt=UK_VintageComputing_RL&hash=item20b512a126#ht_500wt_949[/url]

    [url]http://cgi.ebay.co.uk/Crystal-Kingdom-Dizzy-ULTRA-RARE-/140476850470?pt=UK_VintageComputing_RL&hash=item20b512a126#ht_500wt_949[/url]
    Dazza75 Dazza75 November 2010 Sales
  • Getting an 14Mhz crystal to oscillate?I am building a circuit with an 74LS32 and a 74LS193 to work as frequency divider. Though I have hit a snag, how to I wire up a crystal to make it os…

    ... to I wire up a crystal to make it oscillate? I ...
    Johan1973 Johan1973 August 2012 Hardware
  • Crystal Castles (AKA)[URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=^Crystal+Castles$&pub=^US+Gold+Ltd$&loadpics=3"]Crystal Castles[/URL] Don't know whether it…

    ... .worldofspectrum.org/infoseek.cgi?regexp=^Crystal+Castles$&pub=^US+Gold ... +Ltd$&loadpics=3"]Crystal Castles[/URL]

    Don ... name of the game is Crystal Castles Diamond Plateaus In Space ...
    ZnorXman ZnorXman September 2012 Infoseek database
  • Wanted: Crystal Kingdom DizzyI want to buy Crystal Kingdom Dizzy for ZX. I can offer 50 pounds.

    I want to buy Crystal Kingdom Dizzy for ZX. I can offer 50 pounds.
    solaris104 solaris104 May 2013 Wanted
  • Black Crystal - questionMy copy of black Crystal has 6 maps. From what I can tell the wos file only has 1 [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000547[/ur…

    My copy of black Crystal has 6 maps.

    From what I can tell the wos file only has 1

    [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000547[/url]

    Do the other need preserving or are they about ?
    murtceps murtceps February 2014 Support files
  • Crystal Kingdom Dizzy Remake[img]https://2.bp.blogspot.com/-hu3KFlY4PPQ/WPKTFRnh2mI/AAAAAAAAhRo/Fb92COWf6oMPL4oyEQ_z_Ep6BrRHUCOPgCLcB/s640/Crystal0.jpg[/img] [quote]Dizzy fan…

    ... very special Dizzy remake of ' Crystal Kingdom Dizzy ' on the ZX ... ://www.indieretronews.com/2017/04/crystal-kingdom-dizzy-long-awaited.html
    Neil79 Neil79 April 2017 Brand new software
  • Dizzy VII - Crystal Kingdom Dizzy (2017)It's an official 30 years anniversary of Dizzy games! We are glad to present a new long-awaited remake of Crystal Kingdom Dizzy, being developed duri…

    ... new long-awaited remake of Crystal Kingdom Dizzy, being developed during ... /game/arcade/adventure/dizzy-vii-crystal-kingdom-dizzy-2017/
    TR ...
    moroz1999 moroz1999 April 2017 Announcements
  • Crystal Kingdom Dizzy remasteredhttps://www.flickeringmyth.com/2017/04/crystal-kingdom-dizzy-remastered-and-released-for-easter/

    https://www.flickeringmyth.com/2017/04/crystal-kingdom-dizzy-remastered-and-released-for-easter/
    Black_Cat Black_Cat April 2017 Games
  • The Crystal MazeDear WOS, I thought about conceptualising a Speccy game based on the classic 1990s game show "The Crystal Maze", which has recently returned to TV…

    ... classic 1990s game show "The Crystal Maze", which has recently ... they are awarded with a crystal. Each crystal grants the team 5 ... at the cost of a crystal. Each Zone typically consists ... gets a commemorative crystal stating they "Cracked the Crystal Maze", the ...
    Swevicus Swevicus October 2017 New game ideas
  • Harlequin 48K - 14MHz Low Profile CrystalDoes anyone know where in the UK I could source a low profile 14 MHz crystal? (AliExpress delivery is end of January 2022). I ordered the below from …

    ... a low profile 14 MHz crystal? (AliExpress delivery is end ... farnell.com/ael-crystals/x14m000000l001/crystal-14mhz/dp/9509488"]Order ... : 9509488[/url]
    X14M000000L001 - Crystal, 14 MHz, Through Hole, 11mm ... use will the taller 14MHz crystal, in which case I ...
    old_clone old_clone November 2021 Hardware
<1234567…34>

Latest Posts

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Related Threads

  • 35Mhz crystal wantedI am looking for a 35Mhz crystal to replace a missing one on my +2A. If you have one on a damaged spectrum could you let me know? I will pay a smal…
  • crystal games.can anyone add any more games to this list that crystal released in the 'white inlay' style packaging :<br /> <br /> Invasion of the body snatchas<br…
  • Was it Search for the Crystal Sphere??Does anyone remember an adventure game, I think it was called "Search for the Crystal Sphere". <br /> You started up in a deserted town of about 10 …
  • Dark Crystal and Sabre WulfI was watching Dark Crystal a few days ago and I noticed when the title appears at the start of the film, it uses the same design as the cover of Sab…
  • crystal kingdom dizzy at ?9.99 u must b joking sonI have only recently played this game as i didnt get a chance to buy it on the speccy. And how pleased i am i didnt. <br /> <br /> Upon loading this …
  • Black CrystalI think the Mastertronic re-release of Black Crystal doesn't exist. It's more than likely been a typo when the Master Vision re-release was concerned…
  • Crystal Computing Monitor and DisassemblerI would like to obtain manual for Crystal Computing's "Monitor and Disassembler".<br /> I had no luck browsing the internet.
  • IndyBanana Bones And Something About Crystal Skulls.Go look at the official site. Interesting teaser trailer of Indy. So, something about aliens and Shia TheBeef? Discuss.
  • Indiana Jones and the Kingdom of the Crystal SkullSounds like Mr. Williams hasn't lost his touch yet, though there are a few recycled sounds there. Go check out [URL="http://www.amazon.com/exec/obid…
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