-
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... that adds sound to the video signal! This isn't documented in ... -
+2a CompositeWhile faffing around with my +2a I did a down and dirty mod from pin 6 of the tea2000 straight to the modulator output bit like the womble hack for t…
... to work with a composite video input, but the datasheet implies ... , any problem in the composite video and you'll burn your ... the mixing of sound into video signal, and after solving that I ... do something useful with the video output. -
Challenging Common Knowlege: The +2A/B[I]I was going to write a big long essay about my research on this subject, but being an incredibly lazy person I never really got anywhere with that…
... 's been modulated onto the video signal, but this isn't the ... -
Challenging Common Knowlege: The +2A/B[I]I was going to write a big long essay about my research on this subject, but being an incredibly lazy person I never really got anywhere with that…
... 's been modulated onto the video signal, but this isn't the ... -
Help, I have no idea what I'm doing :-)Hi guys, As it says in the title and my user name, I have no idea what I am doing :-) Both Hubby and I are 'children of the 80's', whereas I had an…
... it supplies a strong enough signal and doesn't apply any ... output a composite video signal instead of an RF signal, but this is ... -
Running a Spectrum in the USI didn't realise how much hastle it was to set up a UK PAL Spectrum in the US. [url]http://wn.com/List_of_ZX_Spectrum_games[/url]. I knew about the …
... ...
As for composite video mod: 'tape apart ZX Spectrum ... for NTSC). Gives a PAL video signal but with NTSC-frequency color ... -
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…
... signals from getting into the video signal (which is now happening cause ... -
48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…
... />
The ULA generates the video signal. So with a dead ULA ... -
48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…
[QUOTE=guesser;498511]The ULA generates the video signal. So with a dead ULA you wouldn't get anything resembling a picture at all.[/QUOTE]
Thanks very much, good to know. -
Picture fuzz! Argh...I keep getting fuzzy bending on my TV when playing games that use the BRIGHT command, is this to do with the poor ariel output and newer TV's? It's…
... from Velesoft), but video is unusable because signal at system BUS connector ... (+5V power, input video signal and output cinch) and video signal (composite PAL) connect ... -
Yeuch....OMG [url]http://www.commodoreusa.net/CUSA_C64.aspx[/url]
... into anything that made a video signal (connector allowing, obviously, so let ... -
Powering up a Speccy after long-term storage.Staying at my folks for Christmas. Feels good to be back in God's country again, even if it is -12C outside at the moment. :-o Anyway, I was plannin…
... will likely send the video signal using roughly the same ... is to take a composite video signal from the Spectrum. If ... try to use the composite video output trick.
- Assuming ... seen better with the composite video output), then disconnect inmediately: ... -
Powering up a Speccy after long-term storage.Staying at my folks for Christmas. Feels good to be back in God's country again, even if it is -12C outside at the moment. :-o Anyway, I was plannin…
... Spectrum will likely send the video signal using roughly the same frequency ... -
Powering up a Speccy after long-term storage.Staying at my folks for Christmas. Feels good to be back in God's country again, even if it is -12C outside at the moment. :-o Anyway, I was plannin…
... is to take a composite video signal from the Spectrum. If you ... instance), you can get composite video using one of the signals ... -
zx81 rf outputHi All I'm not sure if this is an appropriate forum for the zx81, however I'll ask anyway;) I've connected my zx81 up to a mid 90's color tv. I can…
... z80 itself to generate the video signal. Thus the reason you could ... -
zx81 rf outputHi All I'm not sure if this is an appropriate forum for the zx81, however I'll ask anyway;) I've connected my zx81 up to a mid 90's color tv. I can…
... /cosas/JL/ZX81-ULA/ZX81-video.html[/url]
The ... /JL/zx81%282%29/ZX81-video.html[/url]
The ... " to zx81 video signal.
Other solution is invert the video signal ( black screen ... -
zx81 rf outputHi All I'm not sure if this is an appropriate forum for the zx81, however I'll ask anyway;) I've connected my zx81 up to a mid 90's color tv. I can…
... I wonder if the composite video mod could be done on ... possible, but beware that the video signal which goes into the modulator ... preferred a capacitor in the signal (+ to transistor output, - to ... with straight ULA -> comp. video input on TV), and sometimes ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
infact how does the speccy produce a composite video? How can i produce a composite video signal so i can display stuff using a pic and some memory? -
Rubber Key ZX Spectrum - White ScreenA customer has just telephoned me about a rubber key 48K ZX Spectrum which he has purchased second hand. It produces just a white screen on the tele…
...
What about the video output section?
It ... that definately suggests the analog video bits are broke.
video signal, and if that fails ... , on the /Y signal on the ULA to ... see if a signal is getting into there ... -
Opus composite video and joystick portIve had it apart and had a good look around and cant for the life of me see whats wrong, if the joystick is selected in a game(kempston) the characte…
This is where im stumbling, I cant see where its getting its composite video signal from, regarding the joystick port, Im getting nothing moving the stick about, nothing at all -
Opus composite video and joystick portIve had it apart and had a good look around and cant for the life of me see whats wrong, if the joystick is selected in a game(kempston) the characte…
... taken from the same signal that goes into the ... Should contain the final composite video signal, complete with Merged in ... components, as a proper video signal is right next door....
video signal
and should therefore ... -
ZX80 FaultyI have a boxed ZX80 that when I connect to the telly it doesnt tune in right. I can use the K/Board and see that its working on the screen. Iv tried …
the composite mod or a new modulator will not help.
The video signal is out of spec. -
ZX80 FaultyI have a boxed ZX80 that when I connect to the telly it doesnt tune in right. I can use the K/Board and see that its working on the screen. Iv tried …
[QUOTE=guesser;519157]the composite mod or a new modulator will not help.
The video signal is out of spec.[/QUOTE]
Lucky he didn't do it then. :oops: -
ZX Spectrum +3 Query...Hi all, As common, I brought down my Spectrum from the attic the other day to have another stab at getting it running. I knew from the past it was a…
... to run and produce a video signal from the modulator all it ... -
ZX Spectrum +3 Query...Hi all, As common, I brought down my Spectrum from the attic the other day to have another stab at getting it running. I knew from the past it was a…
... 've never used the RGB video so I don't know ... which is modulating onto the video signal. It's mildly annoying but ... -
Composite modding a TK-83Hi everybody, Perhaps you can help me. I've just modded my Jupiter Ace 4000 to composite video and it worked a treat, so I thought I'd try one of my…
can you look at the composite video signal with the scope and see if it is the same as the ZX80. i.e. no front and back porches. -
+2 grey composite modWithout digging out the schematics, is it possible to do the composite mod like the 48k on these?
... , but, if it was composite video (like the 48k modification), that ... ]
There is a composite video signal on the DIN socket too ... you do your own composite video out, it will be (without ... NTSC TV set using composite video signal? How does the screen look ... -
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... Spectrum doesn't generate interlaced signal. [/QUOTE]
video.
... zx spectrum generates progressive signal or just one half ... of the interlace signal? I guess this ... zx spectrum outputs video signal? -
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... running an interlaced and progressive signal on a LCD screen. It ... you are serious about precize video signal. -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... only the cable from the video signal.
I clear that ...
