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Whats the smallest amount of time to precise emulate a Spectrum?Whats the smallest amount of time to completely emulate a Spectrum? Maybe the ULAs timings as mentioned here: [url="https://opencores.org/projects…
... of both Z80 and ZX Spectrum ULA.
You need at ... least two ZX Spectrum picture buffers - one which displays ... -
Whats the smallest amount of time to precise emulate a Spectrum?Whats the smallest amount of time to completely emulate a Spectrum? Maybe the ULAs timings as mentioned here: [url="https://opencores.org/projects…
... a "standard" 48k/128k Spectrum (all ULA-versions) without loosing any detail ... of both Z80 and ZX Spectrum ULA.[/quote]
Or must ... like analog timings instead of "ULA/CPU digital timings"? -
Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... more looking to the Ferranti ULA Datasheets. I think the ... to use 100% of the ULA capacity, which Acorn had ... their build of the ULA to get a feeling ... cost the most in a ULA, as would any blitter ... thinking they put into the Spectrum ULA holds, then I think ... -
Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... have overestimated the ULA capacity... Just reading the Spectrum ULA design book and ... series only had 11x11x4 cells. ( ULA's aren't somethng I ... -
What is VSYNC-based sound on ZX80/81?An Z81 emulator demo with quite impressive sound has this explanation -- "manipulating the vertical sync to create sound with the TV buzz". This is …
... running.
The ZX Spectrum cannot do this because the ... is done by the ZX Spectrum ULA (or gate array for the ... -
Wanted: RGB SCART cable for heatsink 128K and ULA for issue 3 ZX SpectrumHi all, I'm after an RGB SCART cable for a heatsink 128K as well as a replacement ULA for an issue 3 ZX Spectrum (Ferranti ULA from memory). Can an…
... a replacement ULA for an issue 3 ZX Spectrum (Ferranti ULA from memory ... -
For which Spectrum is this ULA?For which Spectrum is this ULA? Ferranti ULA 9RB015E 8428 Micky
For which Spectrum is this ULA?
Ferranti
ULA 9RB015E
8428
Micky -
WANTED: ULA chip for Issue two SpectrumHello, I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip the…
Hello,
I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip they'd be willing to sell? Please PM me if you can help.
Regards,
Kamil -
Which ULA to fit in which issue SpectrumI spent a little while studying the resistor changes on page 30 of the ZX Spectrum 48K service manual. They all concern aspects of the video circuit …
... page 30 of the ZX Spectrum 48K service manual. They all ... problems to have the correct ULA for that board.
ULA. 220R for 5C112E, 1K for ... 6C001E. The older ULA seems to be designed for ... -
Fully refurbished ZX Spectrum 48K boards incl. ULA- Including ULA (version that [URL="http://www.bytedelight.com/?p=41"]corresponds to the board issue[/URL] - click to find out more about ULA version…
- Including ULA (version that [URL="http://www. ... to find out more about ULA versions)
- All new electrolytic ... ://www.bytedelight.com/?product_cat=zx-spectrum-48k-refurbished-boards[/url]
ZX Spectrum 48k ULAlooking for a ZX Spectrum 48k ULA Thanks Phil
looking for a ZX Spectrum 48k ULA
Thanks
PhilEmulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…
... iPAQ is still missing a Spectrum emulator I started typing last ... of compability with a real Spectrum is important to get a ... is slower because of the ULA)?
Or must I ...ZX Spectrum Community ContributionThere is a new interface named MB03 under development(IDE,Flashcard reader,2MB RAM,etc).You can see it on Sintech website. The price of this interfa…
... a integrated circuit (such as ULA). But to invent such an ... gets as big as the Spectrum. Basically it is like the ... question is for all you Spectrum users out there.
Are there any Spectrum users that would be interested ...Spectrum spares / repair jobsI recently bought a few faulty Spectrum 48+'s and have built a fully functional unit from the best bits of them, however this has left me with two pa…
... bought a few faulty Spectrum 48+'s and have built ... or repair.
Both spectrum circuit boards work fine albeit ... repaired or dismantled for replacement ULA / RAM chips to repair ... that.
Both these spectrum + cases are in pretty good ...Strange layout of Spectrum video memoryHello, does anyone have an idea why the Spectrum's video memory has such a strange layout? I understand that a resolution of 256x192 is an easy mean…
... an idea why the Spectrum's video memory has ... inner workings of the ULA can comment on this.< ... a piece of (non-Spectrum) electronics that generates a ... the same borders the Spectrum has. This is why ... I thought that the Spectrum's line organisation might ...Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…
... the advantage (mistery?) behind ULA's spectrum screen memory interpretation?
Dead Spectrum diagnosis and desolderingI have two dead Spectrums - one I'm pretty sure is caused by bad memory, and the other - well, perhaps a bad ROM, perhaps a bad CPU (it gets halfway …
... /> My other dead Spectrum is an Issue 6 Spectrum+.
... (except for the ULA in the issue 2 Spectrum), so it's ... - however, the soldering on the Spectrum is quite fine, and most ... for desoldering ICs off a Spectrum motherboard? Any additional tools be ...Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…
... to life a issue two spectrum (at least the power supply ... example.
I changed the ULA with several others to no ...New Spectrum emulator for DS[url]http://zxds.raxoft.cz/[/url] [quote]Features already implemented: * Solid Z80 core - possible bugs aside, the Z80 emulation is as complete…
... - the memory paging of ZX Spectrum 128k is fully implemented. This ... lines at the times the ULA would read them. It looks ...Spectrum 48k SeettingGot an issue 2 speccy on the bench that had a poorly ula, changed that, also changed tr4 and tr5 (had no oscillator) now it just resets over and over…
... bench that had a poorly ula, changed that, also changed tr4 ... /> EDIT: oops title should say Spectrum 48k Resetting.Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…
... classic russian clone of ZX-Spectrum 48k
... sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http ... sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm[/ ... br /> Spectrum clone, build with simple logical compoments! no ULA chip needed ...ZX Spectrum 128+ problemsHello!I recently purchased and got myself a spectrum 128+ from ebay.The item did not have an original power supply so i got a power supply of 9volts …
... works ok.However whenever the spectrum 128+ is connected on ... the -ve polarity the spectrum heatsink works and the machine ... a faulty Ferranti ULA chipset?
Unfortunately spectrum 128+ does not ... would love to fix the spectrum 128+.
Best ...Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…
... />
I've got a Spectrum+. Sometime in the past I ... are getting excessively hot. The ULA gets a bit toasty, but ... that was normal anyhow. The ULA is a Ferranti 6c001E7.
Spectrum 128K - Needs Your HelpI have a Spectrum 128K (with the external heatsink on the RHS) it is a 1985 Version 6K mainboard, I got it out of the loft the other day and it wont …
I have a Spectrum 128K (with the external heatsink ... RAM chips (soldered) and the ULA is marked 7K010E5.
Any ...Another spectrum saved! (almost)I'm feeling rather chuffed* I just mended my spectrum+ unfortunately several keys were dead, and on opening the keyboard up one of the membrane tails…
... chuffed* I just mended my spectrum+ unfortunately several keys were dead ... not exciting for all you spectrum mending regulars, but it's ... replace a single chip - faulty ULASpectrum +3 disk drive errorsHello!As i am waiting for the ula chips to fix my spectrum 128+ i received another spectrum +3 i bought from ebay. I changed the drive disk belt as …
... waiting for the ula chips to fix my spectrum 128+ i received ... another spectrum +3 i bought ...Spectrum Diagnosis: Purple is not my colour!Hi, I thought the self-fault-finding amongst you might appreciate my learning experience this afternoon in fixing my home-made speccy 48K. Yesterda…
... Memory Controller... no seems fine. ULA board... again clean. RAM board ... fine. At this point the Spectrum is still doing weird stuff ... .
So, if your spectrum is continually resetting, and going ...Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…
... all!
The Harlequin ZX Spectrum clone now shows full timing ... the ZX Spectrum! 8-)
Both the ULA IO and memory ...I want to build a new, super spectrum ;-)only kidding Andrew :-) my brain's going at a mile a minute at the moment, so I thought I should put some of the ideas down in case one of them is w…
... /> I've got a spectrum Issue 2 board, that's ... who gave me his old spectrum stuff.
I ... a 'super spectrum' is a bog standard spectrum, but ruggedised ... from obsolete parts, the ULA is the obvious problem.< ... main killer of spectrums (ULA and ram I presume..). ...ZX Spectrum and (real) B A S I CSometimes ago there was a thread "how spectrum changed your lives". Another thread dealt with "how to copy spectrum screens using basic not using co…
... there was a thread "how spectrum changed your lives". Another thread ... dealt with "how to copy spectrum screens using basic not using ... to understand (maybe beside the ULA) and everyone who dealt with ... did using our first ZX Spectrum)
Children using ...
