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Joystick interface missing RD lineMy no name joystick interface has no RD line. It has the following ic's: SN74LS00N 74LS240N A How can I make a RD line? Micky
[QUOTE=RetroTechie;442680]If the joystick interface ... -
Spectrum+ from ebayI recently received a Spectrum+ that I bought off ebay for about ?10 including postage. I have not tested it yet but had a quick look inside through …
[QUOTE=RetroTechie;442958]
Good advice, but ... -
Looking for a ZX81 gameHi all, I'm trying to find the name of a ZX81 game. It was a sort of maze / adventure game. There would be a maze on the screen, with something like…
[QUOTE=RetroTechie;444285]None of the names ... -
TV tuning problemI've just discovered that I can't tune in any of my Spectrums on my new TV. (Well, "new" in the sense that it's an old one I was given to replace an …
[QUOTE=RetroTechie;444862]Here you go: [URL=" ... -
damaged spectrum+ (blinking squares)Hi, Sorry for my poor english, but I couldn't find on family forums any remedy for my hardware problem with my first speccy in my life :) I've bought…
... , being -7V now.
Like Retrotechie says, the symptoms are consistent ... -
Some ROM/EPROM questions...I've got a ZX Spectrum +, a +2A and +3 computers, and I've been using +3e project ROMS for a while in my +3. I was thinking about using an EEPROM or…
... the Spectrum +.
[b]@RetroTechie:[/b] I will program the ... -
Spectrum 48 as USB keyboard for PCI found online (e.g. [url]http://www.flickr.com/photos/zxspectrumupgrade/3432379128/[/url]) Spectrum 48 converted to USB keyboard. This sounds fanta…
[QUOTE=RetroTechie;449570]
Only 1 word to describe it: cooooooooolll..... :-):-)[/QUOTE]
No, the only word to describe it is "sacrelige" :-) -
What do you think about this ?It seems in near future this multi-role board will be able to mimic Speccy too.... [url]http://www.retrothing.com/2009/04/fpga-arcade-replay-emulati…
... are priced unsustainably low, as RetroTechie rightly says small volume = high ... -
What do you think about this ?It seems in near future this multi-role board will be able to mimic Speccy too.... [url]http://www.retrothing.com/2009/04/fpga-arcade-replay-emulati…
[QUOTE=RetroTechie;450197]But producing a [I] ... -
Loading screen recreation in HTML 5I have just developed a LOAD "" SCREEN$ simulation using the new canvas object in HTML. It is imitating the image bytes loading, as well as the attr…
[QUOTE=RetroTechie;451244]Not at all... loading ... table).
[QUOTE=RetroTechie;451244]So: nice effect. But ... -
Spectranet on the BBC!Yay! I'm famous. Or at least my +3 is famous... [url]http://news.bbc.co.uk/1/hi/technology/10364135.stm[/url]
... from a Speccy!
[QUOTE=RetroTechie;451680]The early days were ... -
Spectranet on the BBC!Yay! I'm famous. Or at least my +3 is famous... [url]http://news.bbc.co.uk/1/hi/technology/10364135.stm[/url]
[QUOTE=RetroTechie;451680][quote]"People come along, ... -
+3e ROMs in AT28C256I've been thinking about loading the +3e ROMs in a E2PROM (AT28C256) to make the upgrades easier. It seems that is TTL compatible, and it takes +5v V…
[QUOTE=RetroTechie;452091]
And of course new EPROMs are usually empty when you buy them so wouldn't need erasure.[/QUOTE]
they're hardly priced as "disposable" chips though are they :) -
Spectranet on the BBC!Yay! I'm famous. Or at least my +3 is famous... [url]http://news.bbc.co.uk/1/hi/technology/10364135.stm[/url]
[QUOTE=RetroTechie;451680]
God I hope ... -
7805 Regulator HelpI am hoping to replace the 7805 regulator in my issue 3 48K Spectrum soon. Unfortunately I don't know exactly what to buy to replace it with (my fat…
[QUOTE=RetroTechie;452925]There is no such ... bits[/QUOTE]
Hello Retrotechie, thanks for such a good ... -
A question about M1 cyclesI'm writing an interrupt routine that, after the usual register pushes, will jump to a location of my choice with a [b]JP (IY)[/b] instruction. If I…
[QUOTE=RetroTechie;454158]IIRC the Z80 will ' ... -
A question about M1 cyclesI'm writing an interrupt routine that, after the usual register pushes, will jump to a location of my choice with a [b]JP (IY)[/b] instruction. If I…
[QUOTE=RetroTechie;454158]Easiest would be if ... (address 0x8000).
[QUOTE=RetroTechie;454158]In other words: 1st ... -
ZX Spectrum + Issue 6A Repair attemptHello everybody! I got ZX Spectrum + which doesnt work properly. On power up I can see color mosaic, then paper goes black and i can see thin red ba…
Thank you RetroTechie. I try this tomorrow. Chips ... -
Who can repair a 48K Spectrum?My Spectrum is broken, please see: [url]http://www.worldofspectrum.org/forums/showthread.php?t=29351&highlight=7805+heat+sink&page=2[/url] Does anyb…
[QUOTE=RetroTechie;462563]Another possibility is that ... -
Best 16k Games?Thought you guys might like this over on Retrofusion :smile: [URL="http://www.retrofusion.org.uk/article/722/1/top-ten-16k-spectrum-games/"]top ten …
[QUOTE=RetroTechie;464638]
[*] [URL="http://www. ... -
Getting a ZX Spectrum to work in the USHello all, I'm terribly new to these forums but not to the use of the Spectrum. I have a few in my collection of old machines and one of them I am …
[QUOTE=RetroTechie;467332]Btw. Commodore 1702 monitor ... -
NEWS + old projects[url]http://velesoft.speccy.cz/other.htm[/url] For show pictures in full size please use right mouse button + show image
[QUOTE=RetroTechie;468320]You will do many ... -
Broken ZX Spectrum? :(Hi! I bought a 2nd hand ZX Spectrum half a year ago. It worked perfectly fine when I first tried it. I put it back in its box which it was sent in, …
[QUOTE=RetroTechie;471658]For electrolytic I prefer ... -
Spectrum +2a / +3 SCART LeadsEvening all, Over the past week or so I've tried two different Spectrum RGB SCART leads from two different Ebay sellers, on a Spectrum+2A and a Spec…
[QUOTE=RetroTechie;473774]Fast blanking serves for ...
