-
faulty zxspectrum +hi all i just bought a speccy 48k+ off ebay it worked for like 15 mins now it is stuck on the reset screen. I fear this is something major maybe fau…
... maybe faulty ram or the ULA. Does any1 have any ideas ... -
SPIN 0.7s uploaded; the crowd goes wild......with bug reports! Get it here: [url]http://sites.google.com/site/pauldunn/ZXSpin_07s.zip[/url] New in this version are RPI filters and Overlays …
... been enabled for ULA64 and ULA Ramping modes, but will be ... -
More colours in existing games?I have been trying to follow the various threads about the new ULA and more colours. I don't understand quiet a lot of it as back in the day all I di…
... various threads about the new ULA and more colours. I don ... able to buy this new ULA at some point and pop ... is an option for 'Enhanced ULA'. Does that make existing Speccy ... -
grey +2 with blue screenI've been checking through my collection of speccys and one of my grey +2's display white (bright 0) as cyan. Bright 1 white is correct and it does t…
... and the scart. Is the ula fooked? Or is it something ... -
Odd keyboard behaviour due to a single bit failure in +3 ROMI've just fixed a spanish +3, which, among normal issues (drive belt missing), presented a very strange one: the keyboard autorrepeated without a del…
... was possible. I suspected an ULA failure, which generated too many ... change anything.
No ULA issues, no keyboard membrane/matrix ... -
Sgt. Helmet Zero - The Mojon Twins (Spectrum 128k)Hi! this is our first christmas present! :lol: [size=150]Sgt. Helmet Zero[/size] [img]http://www.mojontwins.com/wp-content/uploads/2009/12/09.gif[/…
... takes advantage of the modified ULA present in the Harlequin clone ... load the game in a ULA-modified Harlequin (when this is ... -
Sinclair ZX 48K rubber keyed faultyI bought a faulty Sinclair ZX 48 K. Power on and the screen shows only 4 vertical white bars. Nothing other happend. I swapped the ULA and it is ok. …
I bought a faulty Sinclair ZX 48 K. Power on and the screen shows only 4 vertical white bars. Nothing other happend. I swapped the ULA and it is ok. PSU is already ok.
Any idea what's wrong?
Micky -
48k spectrum restarts by itselfFirst of all hello from a newb and thank you for your help. This site has already offered me a lot of insight. I have a 48k spectrum that will boot …
... removed ands re-seated my ULA a couple of times. It ... -
Cyberbig (Animagic S.A.)So, on dm_boozefreek's semi-recommendation (he's bored of it now) I've been playing [url=http://www.worldofspectrum.org/infoseekid.cgi?id=0010481]Cyb…
... , and this is with standard ULA emulation.
So has ... -
flickering noisy screenI have just replaced the ram and ULA. The spectrum boots up OK but the screen is very noisy/wobbly/flickering really annoying :) I am wondering how …
... just replaced the ram and ULA. The spectrum boots up OK ... -
ULA Book Price - Feedback PLEASEThe book is coming together very nicely, and I am in the process of kicking off all the administration tasks like getting ISBN numbers and setting up…
The book is coming together very nicely, and I am in the process of kicking off all the administration tasks like getting ISBN numbers and setting up with the printers.
In order to do this, I need to set the price. The intention is to try and ... -
IF1 and 48k Capacitor QuestionsHi, I am not very knowedgeable about electronics but I am willing to give stuff a go.. I have a microdrive that is not performing and for various r…
... assume is leg1 of the ULA through to a leg on ... -
ZX Demos and the wow factorI remember reading a few comments in the past 3 years regarding demos. Some comments included how boring it was to see this or that effect again, how…
... good."? The DivIDE and the ULA+ are good examples of this ... -
Is there any video input on expansion bus?Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that…
Imagine you want to build a custom display hardware, for instance, to add hardware sprites to display. Is it possible to design such a device so that the video signal can go into Spectrum, ULA and then to standard RF socket? -
CPI emulationI'm currently writing Sinclairean's emulation assembly for the CPI/CPD/CPIR/CPDR instruction group. Does anybody know what exactly the behavior of th…
... write should be checked against contention. -
Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…
... />
I have replaced the ULA with a working one (same ... -
Have a real 48k Speccy? yes ? I need your help.Im looking to run this quick test on as many [COLOR="Red"](only)[/COLOR] 48k Spectrums as possible [B][COLOR="Red"]files moved[/COLOR][/B] [URL="ht…
... the board issue, the CPU, ULA you have inside please report ... ="red"]Zilog Z80A[/COLOR]
ULA: [COLOR="red"]6C001E-7[/COLOR ... -
Static vs stacked local variables in z88dkHello everyone. I'm doing a program for Spectrum 48KB with z88dk v1.8 (XX Mar 2008), and I eventually discovered that if your local variables in fun…
... address 32768, far from the ULA's hands, while the stack ... -
Timex 2048 documentsHi, I got Timex 2048, seems to work, but no colors on screen :cry:. Neither TV out, nor Composite works. ULA fault ? It seems TC 2048 uses MC 1377 a…
... TV out, nor Composite works. ULA fault ?
It seems TC ... -
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... read IN 31 while the ULA is still drawing the upper ... -
Fixed schematic of zx128+2 (grey)This is new fixed schematic of ZX Spectrum 128+2 (grey model) [url]http://velesoft.speccy.cz/other/zx128plus2-iss3-schematic%28corrected_v01%29.png[/…
... and absent signal IORQGE in ULA part....
This is ... -
OMD at the Vintage Computing FestivalJust got this via Farcebook: (Also add to the list of speakers our very own [B]csmith[/B] on the Spectrum ULA) NEWS RELEASE A walk on the geek side …
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 …
... can remember. Spectrums were all ULA, transistor and RAM faults, or ...+3 FaultsI have some Spectrum +3s for testing - looks like they all need drive belts. One will not start up and shows a screen of yellowy green, then one of …
... . Ah I thought - maybe the ULA - the other +3's case ...Re-inventing the wheel......TROOPER: POINT 5 First an apology, my level design sucks (well I'm not happy with it) so Trooper is taking an age to do. Anyway this game comes …
... , I ws thinking of a ULA+ version but the loading screen ...Why only 2 colors ?Maybe this question dont go on this part of the forum, but dont know what other part to ask. Why the Spectrum only can show 2 colors at time in the …
... memory. Maybe not the same ULA ?
Do you really ...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'…
... 14MHz clock that drives the ULA... so I think for anyone ...