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Search Again :: Adv Search 1000 results in 0.006s
<1234567…34>
  • DivMMC clock bufferI have completed the first DivMMC EnJOY today: [url]http://www.worldofspectrum.org/forums/showthread.php?t=44238[/url] But there is a problem with t…

    ... with the clock boost circuit.

    Mario designed the circuit with a ... supply voltages.
    But that circuit doesn't work with either ... /> With that supply voltage, the circuit does it's job on ... have both made a similar circuit.
    Ingo for the ...
    bverstee bverstee July 2013 Hardware
  • Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…

    ... : there is 5V on the circuit.
    Secondly I searched for ... /> In the analog schematics the clock signal circuit is shown.
    I ... that is used in this circuit, the Spectrum suddenly booted and ... does not work in this circuit (in another topic on WoS ...
    bverstee bverstee December 2009 Hardware
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... used a very simple ~4MHz clock multiplier circuit.
    I've seen ... 6502 I've seen a circuit that adds RAM for page ... that runs at a higher clock speed. All internal clocks, page ... speccy with a small adapter circuit. The buss interface logic is ...
    JamesD JamesD September 2006 Sinclair Miscellaneous
  • NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…

    ... ago I did a Z80 clock switch circuit, and for Nmos versions ... , clock signal can only be held ( ... , this is indefinite (static, hold clock forever if you want). Also ...
    RetroTechie RetroTechie February 2009 Hardware
  • NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…

    ... ago I did a Z80 clock switch circuit, and for Nmos versions ... , clock signal can only be held ( ... ve "hand clocked" NMOS Z80s (clock cycles lasting seconds) without problems ... its register values with the clock held? I'm very curious ...
    Winston Winston February 2009 Hardware
  • So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…

    ... lower clock speed at proper points in time. Above circuit can ... switch a Z80 clock between [B] ... unrelated[/B] clock sources (believe ... with ULA. That could simplify clock switch circuit a lot - but you ...
    RetroTechie RetroTechie June 2010 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…

    I think you can say "test successful!". My sincere congratulations :) :)
    Does your clock recovery circuit take much space into your FPGA? Could it be implemented in a plain CPLD?
    mcleod_ideafix mcleod_ideafix September 2012 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... network, only C4, on the clock signal circuit is electrolytic.
    Anyway ...
    Severino Severino February 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... about that
    - The clock boost circuit is not perfect, Mario warned ...
    bverstee bverstee July 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    I tested the new clock inverter circuit today, and had partial succes ... might not caused by the clock signal at all.
    ... clock inverter, so I must also test it with the unmodified circuit ... ).

    I think that the problems with the clock ...
    bverstee bverstee August 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... problems though:
    - The clock boost circuit is not perfect, Mario warned ...
    Saltor Saltor September 2013 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... came up with a practical clock recovery circuit a while back now ...
    Winston Winston May 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... with a practical clock recovery circuit a while back ... takes up on the circuit board. HDMI would ... tried to copy your clock regeneration approach for the ... pass it through this circuit [IMG]http://markamy. ... to add an alternate circuit for the 128k spectrums, ...
    Basher Basher May 2014 Hardware
  • HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …

    ... for my Verilog that does clock recovery, basically to keep the ... /> The only issue with my clock recovery is the level of ... , but I think the clock recovery circuit will have too much jitter ... the display especially at the clock frequency the display will want ...
    Winston Winston May 2014 Hardware
  • DivMMC Enjoy! and interface 1 on ZX+Hi there, I recently obtained the DivMMC Enjoy! and I noticed that it hangs if I plug it in the Interface 1 thru-port of my ZX Spectrum Plus. Conne…

    ... the pull-up on the clock to have the DivMMC EnJOY ... should really get a clock-buffer circuit ready to solve these problems ...
    bverstee bverstee May 2014 Hardware
  • Points on +2 Cassette to add Mono plugHi All, I am looking for the points on the ZX +2 cassette board where I can add the wires to a mono jack to load from WAV Anyone help?

    ... just the same tape input conditioning circuit as on the +3.
    guesser guesser July 2014 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…

    ... ][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE]

    The circuit below is an experimental circuit.
    It has ...
    1024MAK 1024MAK June 2014 Hardware
  • So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…

    ... worth worrying about) and the circuit just floats.

    circuit like this, not just powers of two of the reference clock ... here is the breadboarded demonstration circuit:

    [ ... 4MHz crystal oscillator circuit which is the reference clock. (The ...
    Winston Winston June 2010 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…

    ... 14MHz oscillator circuit we have only the 3.5MHz clock signal at ... ! Solved! Not so fast. Your circuit won't work on anything ... common uses of this circuit is to multiply clock signals, and to ... hand border, a circuit driven by the regenerated clock will see the ...
    Winston Winston September 2012 Hardware
  • ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…

    ... problems with the ZX Spectrum clock signal.
    With the ... this testing I tried another clock inverter solution from Ingo ... adding the 74HC04 circuit, the output of that circuit is worth nothing ...
    This gives a perfect clock signal by default:

    bverstee bverstee September 2013 Hardware
  • SpeccyBob circuit diagramsI've had quite a few requests for this lately, so I've decided to put the circuit diagrams for speccybob on my site in their original Protel format: …

    ... 've decided to put the circuit diagrams for speccybob on my ...
    MikeW MikeW October 2002 Sinclair Miscellaneous
  • Proface AT internal circuit request (pin outs)Does anyone has the circuit of the interface as I have lost mine and I cannot connect it to my speccy.

    Does anyone has the circuit of the interface as I have lost mine and I cannot connect it to my speccy.
    Anestis Anestis February 2004 Sinclair Miscellaneous
  • ANN: Tipshop updated Thursday, 15 April 2004Thursday 15 April 2004 Search engine fixes, and more cheats/maps/tips than a horse has legs! (Eh? Ed) * Updated the alias section of the search fun…

    ... /> solution to Gregory Loses His Clock.

    * Viktor Drozd continues ... , Robozone, Rock 'nRoller, Rubicon, Short Circuit,
    Simpsons: Bart Vs The ...
    hackersanon hackersanon April 2004 Announcements
  • My collection for sale. Full list here!Here's the list of what I am selling. Please contact me at cheggersplayspop*@boltblue.com (remove the *) and make me an offer! TITLE PUBLISHER YEAR …

    ... Doo Encore 1986
    Short Circuit Encore 1986
    Space Harrier ... worn
    Gregory Loses His Clock Mastertronic 1989 inlay seam split ...
    Steve B Steve B May 2004 Sales
  • ANN: Tipshop updated Tuesday, 14 December 2004Tuesday 14 December 2004 I've FINALLY (hopefully?!?!) got caught up with stuff, so here's a fairly big update, with a distinctly mappy feel! * I do…

    ... Warrior ,
    Savage , Short Circuit ,
    Slaine, the Celtic ... Strong Man , Gregory Loses His Clock ,
    Harrier Attack! ... Shockway Rider ,
    Short Circuit , Skool Daze , Slap Fight , ... Prva Akcia , Sabre Wulf , Short Circuit ,
    Street Gang , ...
    hackersanon hackersanon December 2004 Announcements
  • Spectrum Circuit ImageActually, this is about the development of a remake but it seemed the best and most techy place to ask. What I'm after is a decent shot of the Speccy…

    ... decent shot of the Speccy circuit board with all it's ... while the game includes a circuit board image in it, it ...
    Dr Derek Doctors Dr Derek Doctors July 2005 Development
  • +2 (grey) Circuit Schematic?Has anyone got a circuit diagram for the original grey +2? There are a few diagrams in the back of the 128 service manual on WoS, but none of these …

    Has anyone got a circuit diagram for the original grey + ... odd fault in the sound circuit that I want to diagnose ...
    trellis trellis July 2006 Hardware
  • Spectrum games for saleAnyone want any of the following? If so, please make me an offer. Pole Position Groucho (no inlay) Wizard`s Lair Universal Hero Storm Bringer Splat!…

    ... Throttle
    Gregory Loses his Clock
    Ricochet
    Night Gunner ... Belle
    Stagecoach
    Short Circuit
    Bat Man
    Terra ...
    mpaulj mpaulj October 2006 Sales
  • I've successfully created swf clockI was advancing by this tutorial : [url]http://forum.mobiles24.com/showthread.php?t=12361[/url] and I've created a theme with swf clock : [url]htt…

    ... created a theme with swf clock :

    [url]http://www ... title screen there appear digital clock with seconds.
    bohusk bohusk April 2009 Chit chat
<1234567…34>

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  • ZX Spectrum Clock Signal Restorer Circuit[SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE]<br /> <br /> The circuit below is an experimental circuit.<br /> It has only b…
  • SpeccyBob circuit diagramsI've had quite a few requests for this lately, so I've decided to put the circuit diagrams for speccybob on my site in their original Protel format:<…
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  • Proface AT internal circuit request (pin outs)Does anyone has the circuit of the interface as I have lost mine and I cannot connect it to my speccy.
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