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128K RGB Display problem.I have just got my hand on a toast rack, but when powered and connected to the telly the picture jumps horizontally at random intervals. Could it be…
... ;743658]Yes, it is to do with the voltages required ... if there is a wire connected to pin 16. If there is ... it didn't help. The cable I have has a connection ... wiring an rca type composite cable. I know the picture is ... Just rigged up a test cable and it looks OK. -
Things not to do in a powercutplay hide and seek
... , and a couple of misc wall warts will all run happily ... like Apollo 13 only easier to pop to B&Q for ... the power off at the wall socket (well, the power is already ... what I mean) be enough to prevent damage when the power ... remove the plug from the socket? -
Things not to do in a powercutplay hide and seek
... the power off at the wall socket (well, the power is already ... what I mean) be enough to prevent damage when the power ... remove the plug from the socket?[/QUOTE]
No you ... and back on at the wall has exactly the same effect ... -
New CPU and Spectranet oddity.I have no reason to suspect this problem is due to a fault/poor design of the Spectranet, but understanding what it does at system initialisation may…
... board which has a CPU socket. It is an ISSUE ... some color blocks (similar to the lower RAM error ... />
I tried to look at the clock signal ... with or without the Spectranet connected. (If you need I ... situation. When it was connected to the CPU CLK pin, the ... -
PC Keyboard Interface v2014.1A new version of the PC keyboard interface is coming up, with a few improvements: - 'Reset-bug' removed - Smaller, just one inch high, hence cheaper …
You are doing the opposite direction than me ;-). Using a ZX Spectrum as a PC USB keyboard was quite easy to do, maybe the USB HID keyboard can be connected to the Spectrum as well. Have you ever thought of that? -
PC Keyboard Interface v2014.1A new version of the PC keyboard interface is coming up, with a few improvements: - 'Reset-bug' removed - Smaller, just one inch high, hence cheaper …
... as a PC USB keyboard was quite easy to do, maybe ... the USB HID keyboard can be connected to the ... is PS/2 compatible, not USB HID compatible.
That' ... there are quite a few USB keyboards which are PS/ ... use of a simple USB->PS/2 adapter. -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... both before connecting and while connected to the Spectrum ;-)
< ... t need anything fancy to amplify the signal. An ... is a mono jack socket. If you connect a ... stereo jack plug, the socket will short out one ... phono to 3.5mm mono jack plug adaptor connected one ... -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... Spectrum is a mono jack socket. If you connect a ... stereo jack plug, the socket will short out one ... jack into a stereo output socket.
If you plug ... and right channels are connected to the speccy's MIC ... stereo jack isn't connected to anything so the speccy ... -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... jack into a stereo output socket.
If you plug ... and right channels are connected to the speccy's MIC ... stereo jack isn't connected to anything so the speccy ... You don't expect me to write, think, remember and ... try to avoid all the foot ... -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... big differences between the models) connected to a cassette player and with ... socket. I found it needs about 2.8 V peak-to-peak to ... be able to load a program ... -
Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... big differences between the models) connected to a cassette player and with ... socket. I found it needs about 2.8 V peak-to-peak to ... be able to load a program ... this on issue 2 up to 6 motherboards. The loading was ... -
Kempston Interface with sega controllersI am not much of a joystick person when playing games and in fact I use the keys more than anything. Thing is now I would like to use a controller an…
... Megadrive pad connects that pin to Ground it will crash the ... Speccy interfaces that supply 5V to drive 'autofire' circuits in ... GROUND pin in the joystick cable is connected to one side of each ... /Left/Right/Fire wires are connected to the opposite side of each ... -
IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…
... figure out how to plug-in a USB cable and since ... and a dedicated microcontroller(!!!), to generate clean, digitally timed ... particularly nasty as they seem to have "Heisenbug" characteristics - ... operations is required to enable writing to the operating system ... -
IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…
... , you have every right to reply to Winston. Personally I think each ... t figure out how to plug-in a USB cable[/Quote]
to discuss the 1Bis, document/resolve ... anyone would like to contribute please feel free to visit ([url]www ... -
Buzzing Grey +2This is mentioned in another thread but I thought I had best start a new one regarding this. Basically Ive done TR4, put a 5.5k resistor to R38 and …
... amplifier. It is permanently supplied connected to the ULA pin. Try not ... relay that is connected with its coil parallel to the motor. Cut ... the white line of the cable between ... output of the amplifier is connected only if it is needed ... -
Wanted, Spectrum +2 greyI'm after a nice condition, working & boxed if possible spectrum +2 grey :) x
... problem, here's a link to my photobucket album of the ... rubber feet. I have it connected to modern LCD tv via the ... would improve with an RGB cable. The internal tape deck is ... -
Chrome BookAnyone own or use one of these? My wife has been brought one by a family member and we are considering declining. She does need a new laptop but I b…
... it, then move it to my regular laptop for actually ... you can use without having to be connected to the internet - many code ... you can save your code to the 8gb solid state ... hard drive or an external usb (if you get a ... fast usb stick, access times are ... -
Amstrad FD-1 Disc DrivesA quick question: With the Amstrad FD-1 external disc drives, I've seen DDI-1 interface cards mentioned. Are the DDI-1 interfaces just for the Amstr…
What cable would I need to connect an FD-1 drive externally to the ... the drive connected to an old pc now (with the cable unplugged that ... sends power down the floppy cable). If I reconnect that, I ... don't know what cable it is that I plug ... -
Amstrad FD-1 Disc DrivesA quick question: With the Amstrad FD-1 external disc drives, I've seen DDI-1 interface cards mentioned. Are the DDI-1 interfaces just for the Amstr…
... QUOTE=Speccy_James;752878]What cable would I need to connect an FD- ... the drive connected to an old pc now (with the cable unplugged ... sends power down the floppy cable). If I reconnect that, ... never need the 5v connected to the floppy cable unless you are using ... -
+3 Scart output has diagonal distortionI have an issue with my +3 plugged into the tv via scart, the output has a diagonal distortion to it? the display has like a pixel offset every 1/4 o…
... /> I’ve connected to my tv with a scart cable, but the image ... :30 pm
You need to bridge a resistor with a ... you can connect it to RGB Scart and to Commodore monitors like ... -
+2A socketsI have seen an internet site which mentions 48k loading programs/games from a pc sound card (can't fiond it now!!!). Is this possible to with a spec…
... old Acer laptop headphone output socket, straight to my +3 tape input ... socket. On your +2 as mentioned, ... . It can also convert these to WAV files, and theres a ... output volume of the device connected to your Spectrum low, and adjust ... -
PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…
... is something like a UART to handle serial communication (timings ... ports are both just connected to a general purpose I/ ... a +3 RS232 to DB9 or DB25 cable (I guess ... I get to do my own parallel cable. Does anyone ... 4 pins to output to IC12, and 4 to input from ... -
PC to +3 communicationsHi I'm going to explore the abilities of my +3 to communicate with a PC. The "natural" ways to do that would be via serial or parallel link. I've b…
Hi ZUP,
I recommend you to use a cheap UART-to-USB-Chip ( -
+2a modified for OTLAok just wanted some help here as i wanted to use OTLA on my +2A. Now i know i cant put the data on to tape as it just don't work (already tried it). …
... input on the Tape/Sound socket to a +2A motherboard should be ... slightly more awkward to modify to use the same socket.
First ... the socket and routed, via a 1 microfarad capacitor, to any point connected to ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... ear socket as it stands would not be useable due to the ... resistors and capacitors connected to it.
to generate a video picture takes ... rest of its time was to update the ULA display, there ... -
128+2 Help!Today the postie brought me an early Spectrum 128+2, it's a Z70700 Issue 1. Everything seems to be working ok, i.e it boots up and the keyboard work…
... />
The 5 wire socket going to the tape player circuit board ... . The black/white wires connected to a mono earphone socket as EAR. I ... 'll connect the black/blue to another socket as MIC and put ... ordered a small mono amplifier to sit between the input and ... -
JoystickHi, i am new to the forum, i have Speculator on my PC. What i want to know is what is the best Joystick to use on my PC, i have got a Saitek attached…
... .uk/itm/Atari-Controller-Adapter-USB-Cable-PC-New-2-player-/151206449939 ... /Amiga-and-Atari-USB-Controller-Adapter-Connect-Controllers-to-a-PC-/261428411328 ... -
How to run games from mp3 player to a real 48K machine?Hi! I would like to test the homebrew games that was "released" in 2013. As far as I know there haven't been made any real tapes for these games so …
... (from mp3 player) to mono (to EAR Socket on Spectrum) cable. See if that ... volume.. then it's time to get a small audio amplifier ... -
Spectrum +2 (Grey version) RGB SCART QuestionHi Guys, A quick question for you. As the new owner of a 128K Spectrum +2 (grey version), I'm using a cable from Retro Computer Shack which tries to…
... high - something around 470 ought to do it. On investigation, ... interface was 12v which to get down to about 3 would have ... connected to the output of the resistor. Finally I modded the SCART cable to ... connect pin 5 Speccy end to pin 16 ... -
Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... and just add a rca socket to the left (like you did ... is a 75 ohm resistor connected to the emitter, and the ... side of that resistor is connected to the composite video output on ... composite video output is momentarily connected to ground, the video signal will ...
