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If you could re-design the Spectrum...Let's suppose you could go back in time to the beginning of the Eighties. The Spectrum is being designed as the revolutionary successor to the alread…
... 'd have to set an oscillator on the ULA to output ... -
If you could re-design the Spectrum...Let's suppose you could go back in time to the beginning of the Eighties. The Spectrum is being designed as the revolutionary successor to the alread…
... 'd have to set an oscillator on the ULA to output ... -
Will Spectrum run @ 60Hz?Sorry to overlap w/ my other recent post, but want to know, if I grab a Spectrum and use it in America with a voltage converter or a different power …
... timing derives from a single oscillator attached to the ULA. On ... Spectrums (and PAL Timexes) the oscillator is 14MHz which matches well ... timing. On NTSC Timexes the oscillator is 14.11MHZ which matches ... -
Mayhem Accelerator in actionI've put together the first video of the prototype Mayhem Accelerator running on the Sam Coupe. The video shows the Sam running a ZX Speccy emulator …
... own 32.768KHz (battery backed) oscillator and is completely independant of ... -
Game: the GEM machineHi all, I'm moving this game discussion from the Wanted: Game Ideas! thread to here, so we can concentrate on just the game. Any comments/suggestio…
... do its business, like an oscillator, but it seems its an ... -
Portugese SpectrumI've just acquired a Speccy 48K which states "made in Portugal" on the back. I thought Portugese "Spectrums" were actually some illegal copy of a Tim…
... models, the DC-DC converter oscillator is replaced by a NE555 ... -
toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... regulated by feedback into the oscillator.
Switch mode supplies ... -
Mysteries of Electricity QuizA little fun quiz that I know the answers to, but may lead to some head scratching and disbelief, but there's easy experiments than can be performed …
... a power FET when the oscillator driving it decided to not ... -
ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank
... . I think the 14 Mhz oscillator is not working, i don ... -
Reconditioned Sam Coup?, two drives + more...I've popped up a reconditioned Sam Coupé on eBay as a Buy-It-Now listing. [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=11012902618…
... occurance though. Fitting a crystal oscillator can fix this just to ... -
Tape not loading - ideasI have two spectrum 48k rubbers. The tape drive is one that has a data mode and a ph mode. The data mode overrides the volume control. Prior to last…
... far as i remember). This oscillator should however not be running ... -
Tape not loading - ideasI have two spectrum 48k rubbers. The tape drive is one that has a data mode and a ph mode. The data mode overrides the volume control. Prior to last…
... far as i remember). This oscillator should however not be running ... -
My SurplusHere's a list of stuff that I plan to sell. Please let me know if you're interested in any of the items listed below. If you need pictures or more de…
... generated by its own internal oscillator and *not* from the mains ... -
Composite Video output problemHi everyone, I?ve got a problem that?s really bugging me. I have one Spectrum 48K and one Spectrum +3, both with Composite Video output modification…
... the 4.43 Mhz
oscillator, with the scope or an ... -
Composite Video output problemHi everyone, I?ve got a problem that?s really bugging me. I have one Spectrum 48K and one Spectrum +3, both with Composite Video output modification…
... the 4.43 Mhz
oscillator, with the scope or an ... -
Composite Video output problemHi everyone, I?ve got a problem that?s really bugging me. I have one Spectrum 48K and one Spectrum +3, both with Composite Video output modification…
... regenerator which uses a bizarre oscillator and coil arrangement to derive ... -
Composite Video output problemHi everyone, I?ve got a problem that?s really bugging me. I have one Spectrum 48K and one Spectrum +3, both with Composite Video output modification…
... ;231928] which uses a bizarre oscillator and coil arrangement to derive ... -
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…
... . A fairly crummy quartz crystal oscillator should have an accuracy of ... -
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.
... 's internal 35.469 MHz oscillator must be taken from the ... -
Some digital/analog "flaws" I enjoy/miss.I enjoy the soft fuzzyness of a CRT TV when watching shows/movies but I do enjoy the crispness of a LCD monitor when used with a computer/console. I…
... made by a solid state oscillator, but an electric motor with ... -
Getting audio from Currah uSpeechHi! I've just got a Currah uSpeech, it's working (I have the copyright message on top of the screen above the (c) 1982...) but I'm in Argentina, and…
... is a one transistor LC oscillator for the sound carrier, tuned ... -
General question about electronics I guess... (128k +2a)[Short question] When I very slightly put my finger on top IC15 on my +2A the TV picture becomes crazy and the spectrum acts if it just resets I don…
... be associated with
the oscillator X1 circuitry ....
I ... -
TV output from original +2I've modified my 48K Spectrum to output composite, and I have it working here in Japan on my old monitor (X68000). Hopefully my parents will bring ov…
... tracked it down to the oscillator and FM modulator creating the ... -
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…
... to get the crystal-controlled oscillator starting.
The trim-capacitor ... -
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…
... rest. But in a crystal oscillator, all these properties that make ... to know what makes the oscillator tick (or copy a proven ... you understand this type of oscillator. So: just buy a few ... to find a complete quartz oscillator block with the right frequency ... -
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…
... the capacitance of the crystal oscillator circuit (you are just a ... -
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…
... body).[/QUOTE]
Maybe the oscillator works fine once it runs ... that make up the quartz oscillator. A handful of easily obtained ... : go for a ready-made oscillator block, and be done with ... -
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…
[QUOTE=RetroTechie;404632]Maybe the oscillator works fine once it runs, ... load capacitors on the 25MHz oscillator. It starts up just fine ... -
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…
... circuitry by a complete quartz oscillator block of 17 MHz.
