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ZX Spectrum 48k tape loading issueHi guys I have refreshed a ZX spectrum 48k with a new keyboard layer and front case. The machine will power up and seems to work good. Unfortunate…
... have refreshed a ZX spectrum 48k with a new keyboard layer ... checkered border on screen and no loading sound.
Any ideas ... -
ZX Spectrum 48k issuesHi all! A couple of days ago I bought my first 48k Speccy off ebay (I already own a beautiful QL expanded with QubIDE interface and 640k ram). It was…
... ago I bought my first 48k Speccy off ebay (I already ... " the clk line from the ULA (6c001e-7) to the z80 ... it plays some games with no apparent issues.
Sadly ... -
Another 48k Speccy acting as a 16K model.Hi all, I originally was going to post asking for help to fix the new addition to my family a very nice condition Issue 2 sold on ebay as a 16K model…
... up... and oh its a 48k speccy.... Oh well bonus. ... I powered her up, again no problem, did the memory ... test points in the 48K service manual I came ... thing fires up as a 48k model now ...whooooppiieee....still ... quirk of the 6C001E-5 ULA dunno.
Just wish ... -
No CLK on issue 2 ULA pin 32I'm trying to fix an issue 2. The symptoms are as follows:- Black and white bars on screen, colours near impossible to tune in, although these po…
... these pots are fiddly..
No CLK signal being generated on ... of CLK on the ULA, but the ULA's I'm using ... .
Working back from the ULA I tested and changes the ... -
ZX Spectrum 48k ULAlooking for a ZX Spectrum 48k ULA Thanks Phil
looking for a ZX Spectrum 48k ULA
Thanks
Phil -
Need help from people with a 48K/128K/+2 (not +2A/+3)Scared ya, didn’t I? Well, this one is very simple and not as involved as [url="https://www.worldofspectrum.org/forums/discussion/55142/need-help-fro…
... to make sure there are no unpleasant surprises, so I’m ... occasionally when a sound is played, but under no circumstances should it ... .
[b]Note to 48K users[/b]: test as described ... in both modes, i.e. 48K and 128K.
Thanks ... -
Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…
... gave me a ZX Spectrum 48k in seemingly good physical condition ... carton, polystyrene insert, power supply. No indication of when it was ... the keyboard membrane tore with no effort when we separated ... s no audio signal anyway. There's a quiet squeaking sound coming ... -
48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... 've got 4 48k models, an original case 48k issue 3, and ... and/or ULA. Swapping the ULA from a known good 48k made no difference ... ohms of each other and no transistors showed shorts or open ... -
48K games with in game bleeper music and sound FX at the same timeJust wondering if any clever programmer even managed to make a 48K game that features in game music and SFX (from just the bleeper - no AY). Was havi…
... even managed to make a 48K game that features in game ... SFX (from just the bleeper - no AY). Was having a conversation ... -
New colour palette for 16K/48K/+ machines, based on ULA YUV voltagesI’ve made a colour palette for 16K/48K/+ machines, based on the YUV voltage tables in Chris Smith’s book The ZX Spectrum ULA. This colour palette …
... a colour palette for 16K/48K/+ machines, based on the ... ’s book The ZX Spectrum ULA.
This colour ... ZX Spectrum 16K, ZX Spectrum 48K and ZX Spectrum+ machines, basically ... use the original Sinclair Ferranti ULA, 5C102E, 5C112E or 6C001E. It ... -
zx spectrum 48k interference during first two minutes of warm upi have a issue 3B 48k that i am looking at during the first two minutes (approx.) of warm up there is interference on the screen (tried to take a pic…
i have a issue 3B 48k that i am looking at ... socket is ULA which i have tried swopping with no difference .... it ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
... ]
It is steady black, no border.
[quote]
ULA or anything else from producing ... connecting a speaker to the sound output to see if anything ... to try modified ROMS on 48k.
[quote]
Either ... -
rubber troublejus got 48K rubber speccy into my possesion, which was my first computer back then but only for few months before daddy decided to upgrade it for 48+…
There's no reset switch on a rubber keyed 48K but you can ... MIC socket.
Edit... No noise from the beeper whilst ... silicon heaven. If you get sound as normal whilst playing games ... the load signal to the ULA pin (I think). You can ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... 256x192 with four colours and no colour clash - using the ... twice as many cycles during ULA memory access.
[quote ... excitement and the millions of 48k owners out there would have ... game could offer besides better sound. A resurgence in sales for ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... twice as many cycles during ULA memory access.[/quote]
ULA, RAM and CPU. ... and the millions of 48k owners out there would ... could offer besides better sound. A resurgence in sales ... The problem is that no matter what you add to ... -
Audio input on a +2would it be possible to connect an external tape recorder to the socket at the back,or would something bad happen?
... the same level as a 48K rubber keyed machine.
< ... I have said this before, no doubt I will be saying ... and you WILL blow your ULA chip. For this reason, ... /> That "fluffy" sound you hear when there's no tape signal is ... be responsible for frying the ULA's? -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... s nice to see AMSTRAD ULA in 128k speccy :) ... Sinclair takeover has repainted ULA's with their logo ... there is no test on break nor sound on MIC ... RGB port with no result (i have 48k and 48k+ which works ... 2 board: (see the Amstrad ULA chip, same 40056 number) < ... -
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 …
... br /> On 48K+ machines, besides the blipper, the sound also comes out ... are replacement ULA chips?I know that ferranti no longer exists ... start being suspicious about the ula.
NO, this is not a ... Spectrum 128+ compatible ULA, this is ... -
Compatible SpectrumsFollowing some recent coding exploits I've been thinking about compatibility of various models of ZX Spectrum. Yes, it's a common question on the for…
... me wrong, and in fact no-one said it, then ignore ... perfectly. The +2A and +3 ULA does not stop CPU clock ... as RAM bank switching, AY sound, RS232, sinclair joystick, tape drive ... with 9V as the old 48k.
I compared the ... -
Radiohead on the Spectrum...[url=http://www.vimeo.com/1109226?pg=embed&sec=1109226]Or something like that, anyway[/url]... with thanks to [url=http://blog.makezine.com/archive/2…
... a TV. (...) The sound isn't from the ULA, but AY, and ... the image shows a 48K. (...) I ... sonido que se escucha no es de ULA, sino del AY, y ... -
Tape loading issues - can anyone help?Hi, I have just bought a +2 which has a problem. Whenever I try to load a tape the spectrum refuses to acknowledge what I am doing. I have tried in …
... have tried in Loader and 48k Basic, but I can ...
I also know that sound is getting to the television ... like I would with a 48k?
Any ... implies you are not hearing sound from the tape, but ... connected with no resistance to pin 34 of the ULA (the ... -
R.I.P. spectrum 48kRecently one of my 48k rubber key (issue 4) machine bit the dust the other day when I tried to power it on. When powering it on, it gave a weird 'bee…
... try and also a spare ULA. But I want to make ... specs 16k to 48k+) that works very well -no transformer needed (only ... , Z80, ROM, and a spare ULA. Just don't want to ... few IC swaps) the AY sound chip...I never would have ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... Z80 and a true ULA, and at most, 48K RAM, can't ... code for the 48K because I have no idea how the ... ST I'm crap at sound and music. But also the ... through one port like the sound chip. Now I could do ... machines that claim to be 48K compatible but aren't. But ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... of microseconds elapsed between the ULA getting a 'turn the border ... emulation, so there's clearly no functional difference. I can ... more so than its limited sound capabilities or its inability to ... have an affinity for the 48K, others have an affinity for ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... =cheveron]If you replace the ULA in the original machine with ... the simplicity of the original 48K machine that is so endearing ... will run on the 48K machine is sound. Yet most people around ... the Spectrum 128. There's no accounting for taste I guess. -
zx81 repairare they easy or very tricky to fix, just curious? getting one , that displays but no cursor.. so hopefully I can get parts to fix it. I started off…
... to design a replacement ZX81 ULA, what extra functions would you ... is out because the original ULA can only do monochrome, and ... you've said no colours) , I say sound (to 16/48k speccy standards ... -
Cant DecideI have had a lot of spectrums in my time from the 16k to the +3 and as we all know they all have flaws. I am thinking about buying another and wanted…
... 3 one (with the sound fixed and no disk circuit) I suspect ... some advantages over spectrum 48k like ULA or video socket, but ... issues ... compromises in the ULA resulting in display issues, partially ... decoded ports, only one ULA pin used for audio lines ... -
emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... only 81 had pretty convincing ula interference but now dot crawl ... br />
[QUOTE=rogerjowett;479298]no on ehas managed to use ... seperate small files and one 48K snapshot... I guess I would ...
Various network cables and sound leads
It's ... -
Simple & Portible means to boost PC Soundcard Line Out?Hi Guys, My older computers were very good at driving a real spectrum's ear socket via their Line Out or Headphone socket. My new Dell's sound card…
... , yes, yes, yes. ... and no!
[QUOTE=fog; ... flash shite that is surround sound . and maybe thats ... Aux In but unfortunately no Headphone socket. (Damn you ... have a load of 48K units and don't ... ) sockets are connected to the ULA.
[QUOTE ... -
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... a new Z80 processor or ULA, among other things.
... on a 48K spectrum, but have no or little sound, unless you ... an excellent picture and good sound too. All the 128K ... have a built in AY sound chip. The +3 one ... myself, it doesn't sound too bad when connected ...
