-
zx spectrum +2 no clock signal ??help me ...... looking at a specie +2 (original +2) it is the Z70700 issue 1 (uk one) i seem to have no clock,no display,no sound at all. it is sho…
... one) i seem to have no clock,no display,no sound at all. it ... very good at all .. still no change with that lot done ... to the cpu pin 6 (clock) and that pin 13 of ... -
zx spectrum +2A / +2B no clock signal or video display / gate array dead ?scratching my head with this sick specie .. it is a issue 4 .. i was hunting for R45 that goes between the clock signal of cpu and gate array,, but i…
... R45 that goes between the clock signal of cpu and gate ... removed from this revision.. the clock also goes to the 74HCU04 ... ) before the cpu but no sign of the clock . could this chip ... be killing the clock or is that pesky gate ... -
ZX Spectrum 48k - no CLK signalHello I'm trying to repair ZX Spectrum 48 mainboard issue 3B. When i check signal with oscilloscope on X1 or on ULA pin 39. I get stable 2V no clock…
... 39. I get stable 2V no clock pulses. Can broken ULA chip ... be the cause of no clock signal?
regards
Spectrum Abuse...Just got some new Spectrums in to repair ( I find it a great way to relieve stress, excepting when I do something daft while fixing them... ) One …
... had a look at another... No video, no clock. ULA seems dead, but ... no video at all had me ... ... For what reason I have no idea. It's not likely ... was gone!... No pad, no through plating left, no upper pad, no tracks. And ...Thieves School - New Game from World XXI Soft Inc.After aprox. 2 years of hard work, World XXI Soft Inc. announces the release of [B][I]Thieves School[/I][/B], a platformer multi-level for Spectrum 1…
... , Bank).
- Take your time. No clock or special enemies rushing. You ...zx81 help neededHi, I got a ZX81 today supposedly in working order, it was for the first two minutes, but after that the keyboard produces the wrong letter, number …
... is a plain white screen, no cursor or anything. When the ... were displaying they stayed stable no flickering or distortion etc.
clock that ULA generated. No Q1 no clock, and Z-080 ...BoredWell, i'm at work again and i'm totally bored. There isn't enough work to last me till 430, and no one has anyhing else for me to do. I'm not even …
... , and your freedom !;)
No clock in the workplace either, and ...BoredWell, i'm at work again and i'm totally bored. There isn't enough work to last me till 430, and no one has anyhing else for me to do. I'm not even …
... , and your freedom !;)
No clock in the workplace either, and ...Faulty +2 advice please :)Hi all , I have a faulty +2 which when powered up gives a black border and 6 black and White stripes , I'm thinking faulty ram ??? Any one have any b…
... as it powers the clock for the CPU (no clock = no activity, of course ... on a 48K). Check the clock signal if you can and ...Spectrum 128 toaster and divide incompatibility problems with some demos and games.Okay so I got this thing now. It?s my first Spectrum ever. [img]http://img836.imageshack.us/img836/2016/speccyl.jpg[/img] [url]http://img824.image…
The original 128k motherboard has NO clock signal on the edge connector.
[url]http://k1.dyndns.org/Vintage/Sinclair/86/ZX%20Spectrum%2B%20128K%20%28Spanish%29/PCBs/PCB%202.1%20Spanish%20rear.jpg[/url]ZX Spectrum 48k - no CLK signalHello I'm trying to repair ZX Spectrum 48 mainboard issue 3B. When i check signal with oscilloscope on X1 or on ULA pin 39. I get stable 2V no clock…
... chip be the cause of no clock signal[/QUOTE]
It ...ZX Spectrum 48k - no CLK signalHello I'm trying to repair ZX Spectrum 48 mainboard issue 3B. When i check signal with oscilloscope on X1 or on ULA pin 39. I get stable 2V no clock…
... .
I'am still getting no clock signal on ULA pin 39 ... service manual when there is no 3MHz clock i should check ULA ...The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…
... appeared not to be running (no clock signal from CPUCLK on the ... removed, the CPU clock looked more sane, but still no video.
no ROM installed (the pattern is ... data bus since there's no RAM). B&W image ...Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…
... is dead, the CPU has no clock signal from the ULA (via ... that you have a good clock signal on the CPU (pin ...Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…
... is dead, the CPU has no clock signal from the ULA (via ... comes to electronic components, with no moving parts to wear out ...If the ZX Spectrum AND the Commodore 64 were not available which 8 bit computer would you have got?Following on from the “[url="https://www.worldofspectrum.org/forums/discussion/218/your-favourite-machine-apart-from-the-spectrum/p1"]Your favourite …
... main custom chip is defective. No clock signal is sent to the ...128K refurb.... What is the best way?Here's the latest Spectrum I got... Finally got a Toastrack... Not sure if it was good value ( around US$100 ). [img]https://os.blackice.com.au/us…
... 128k and started fault finding. No clock on the z80. Check at ...128K refurb.... What is the best way?Here's the latest Spectrum I got... Finally got a Toastrack... Not sure if it was good value ( around US$100 ). [img]https://os.blackice.com.au/us…
[quote="cj7hawk;975204"]No clock on the z80. Check at the oscillator. 17.27MHz. [/quote]
Hold on. If the CPU is getting no clock, then the problem might be the ULA. Check Pin 36. You should see a steady 3.5 MHz clock signal there.Things that people >= 40 (ish) would recognize (and others would likely not)#1: Used to see these all over the place, usually right above the bath tub. [img]http://www.constructionphotography.com/ImageThumbs/A052-01718/3/A0…
... can get gold pens now, no clock though. (£660)
https ...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'…
... Spectrum's 3.5MHz clock.
Clock *dividers* are easy ... trigger where there is no edge. This makes multiplying ... the pin LEAD_L is no longer floating, and will ... pin - it will no longer float but instead ... in sync, there are no pulses (well, none worth ...Revisiting Spectrum CPU clock regenerationWarning: This post will be a bit nerdy :-) Some time ago, I experimented with phase locked loop circuits as a possible way to regenerate the Spectru…
... , and the clock after contention. There's no contention cycles visible ... words our reference clock at 112MHz is no longer exactly 32 ... times this clock. So whenever ... at all while there is no Spectrum clock because it's being ...48k spectrum pausing the clockI had a spectrum 3b motherboard donated to me with no case. So i have decided to put it in a custom case with built in kempston port etc. I also …
... motherboard donated to me with no case. So i have decided ... to pause the clock. I have found the clock line as it ... never resumes when throwing the clock back to normal. Anyone know ...I have no sound!Hi, I have loaded a Sinclair SX Spectrum emulator, spectrum_ZigaRamsak, and I am running this on Windows XP. My problem is that I have no sound, for …
Hi,
I have loaded a Sinclair SX Spectrum emulator, spectrum_ZigaRamsak, and I am running this on Windows XP. My problem is that I have no sound, for instance when loading a software or playing a game:-(
Anyone who can help me?no use uploadingA week ago I uploaded a game which wasn't on the archive. And what's the result? since then there's been no reply and nothing at all. I don't underst…
A week ago I uploaded a game which wasn't on the archive. And what's the result? since then there's been no reply and nothing at all. I don't understand why then ask to send games?:(FREE Spectrum Software - No Catches[url="http://www.UKretro.co.uk"]www.UKretro.co.uk[/url] is currently offering FREE original Spectrum software. There are currently 5 different title…
... />
That's it! No catches, no small print, and only the ...no selling fee; no listing fee You might already know this, but [url="http://www.bid4games.co.uk"]www.bid4games.co.uk[/url] is not charging selling fees at the moment, making it…
You might already know this, but
[url="http://www.bid4games.co.uk"]www.bid4games.co.uk[/url]
is not charging selling fees at the moment, making it
completely free, as there are no listing fees anyway.No Sound In SpectaculatorI downloaded Spectaculator and spin. I tried Shock Megademo on both. There was no music Spectaculator. I tried the mute sound toggle numerous times…
I downloaded Spectaculator and spin.
I tried Shock Megademo on both.
There was no music Spectaculator. I tried the mute sound toggle numerous times.No speech in Cobra's Arc? A mystery tale from Spain...I once downloaded CsA - probably from some Spanish retrogaming website - in TAP format. While I usually discard TAP files in favor of TZX ones as soo…
... that my TAP file has no "extra" data compared to the ...Access Database function in ZX-Rainbow S.E. yes or no?Dear friends and users of ZX-Rainbow! history: I have had some problems with ZX-Rainbow S.E. and a very bad time last weeks: The game scanner of ZX-…
... database object. Well, there's no real difference in the handling ...
