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RF output instabilityHello! Now i need help :) One of my rubber keys (48K) behaves a bit strangely on behave of RF TV output. When booted the picture is stable. Then i …
... on behave of RF TV output.
When booted the ... -
Scart output flickeringHello :-) Got myself a scart lead from eBay for a +3 and a +2A. The picture quality is brilliant but the top third of the screen flickers / pulses …
... the flickering is changing the output to NTSC 3.58 which ... -
Games not loading in my original spectrum 48kHello. I have recently bought a zx spectrum, for nostalgia purpose (haven't touched one for more than 20 years) The computer boots fine, but I can'…
... 's sound card to the MIC port and use tapir to ... various sound levels and the output of two different sound cards ... -
Spectrum Emulator that supports low resolutions and runs smoothlyHello to All, I have been trying to find a spectrum emulator that will work well through my CRT TV (using RGB to Scart) Most emulators seem to supp…
... job and support full overscan low resolution like 352x288, are ZXSpin ... that supports custom / native spectrum low resolutions and also runs smoothly ... -
Anatomy of a bad M1No, not the motorway (although at times the tarmac M1 goes about as well as this one...) But the bad M1 problem that seems to occur most with issue …
... />
Here's what the output looks like with nothing connected ... reached (high and low) by the M1 output could be measured relative ... (the M1 line is active low, so it should sit at ... support this too, since the output then starts to look like ... -
Low level microdrive programmingSo I'm on my lunch break trying to find out about low level microdrive programming (without using IF1 ROM). I see one can use port 0xe7 to read and w…
... trying to find out about low level microdrive programming (without using ... from standard? Do they emulate low level microdrive calls or IF ... -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... paint stripper set on the low setting, it's actually ... , so when both are low, /ROMCS is low).
We ... Pin 20 will receive the output of the dead cockroach, in ... the chip enable to the output of the OR gate.< ... 20 is soldered to the output of the OR gate ... -
WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... to encode the RGB output into a CVBS/S- ... RGB are also available as output (and incidentally, S-Video)< ... of wire to get video output. For ULAPlus compatibility, a ... that the 3.3V output is enough for the address ... are produced my the low quality of this expired ... -
A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …
... RAM
Stereo AY sound output mixed with beeper to SCART ... TV output
Interface 1 style shadow ... Joystick
Analogue EAR and MIC ports for cassette tapes.
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…
... works by looking at the output from an XOR gate, which ... be slowed. If it's low at the rising edge of ...Frequency in KHz of the TV outputI recently acquired a very cheap USB analog TV tuner. When I connect it to the cable TV, it only finds two channels. But when I change the frequency …
... for my ZX Spectrum antenna output (I don't want to ... in KHz of the modulator output?Correction of +2 hardware errorsThis is a collection of various pieces of information picked up from various places, including a lot from this forum. I have edited it and reworded i…
... , check their gain, if low renew else refit them the ... present on the composite video output. Monitor should now produce ... /> The circuit diagram shows video output options called Standard and Peritel ... switch. This way the output of the amplifier is connected ...Video output questions...Two questions... [QUOTE]1. The yellow and blue colours seem out of phase on the display. Is this normal for an RF connection to the TV/monitor?[/QUO…
... modern CRT TV, and the output is black with grey outlines ...PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…
... , rd, wr, sel;
output csrom, csram, cspio, csds, csbsy ... , 058,102 (making f17 low will make zxrom go high ... = OUT 231(making zxrom low will make f17 go high ... , 058,102 (making f17 low will make zxrom go high ... = OUT 231(making zxrom low will make f17 go high ...Spectrum 128K + Toaster ProblemGot an issue with my toaster everything seems fine other than the input from the ear socket is now remarkably low level/interference almost cannot ge…
... ear socket is now remarkably low level/interference almost
cannot ... resoldered & tightened the ear/mic socketsSAM Coupe - a video problemHi mates. Lately I managed to acquire a SAM Coupe 512K. There are, however, certain problems that - I thought - You might help me with, in a mome…
... both: TV antenna output and monitor RGB output. Which I've been ... little mess in the right/low side of the screen. They ... [/url] as a "Stereo sound output/Light Pen input".
AY volume on 128 SpectrumsHi! I have a 128 toastrack speccy. I think my problem is quite common: the AY soundchip output volume is quite low. To properly hear the tunes or ef…
... common: the AY soundchip output volume is quite low. To properly hear ...TZX emulation and implementing pausesHello. I'm developing a small Spectrum emulator in my spare time and I'm currently in the process of hooking up tape emulation to my code. I have a r…
... the data will be HIGH, LOW, HIGH, LOW.
[*]The data part ... data is being output, the level starts as LOW:
[LIST ... for the data will be LOW, HIGH, LOW, HIGH.
[*]The data ... toggle the current status to LOW.
[/LIST]
What ...Spectrum FPGA clone with HDMI video output by Jozsef LaszloThis clone is based upon the ULA core I wrote for opencores.org . It features a scandoubler and HDMI conversion engine. Jozsef has found that a 28MHz…
... a 28MHz pixel clock HDMI output is accepted by HDMI capable ...Video OutputHi, I've just got back into the Speccy via emulators and now a Spectrum+ I've converted mine to composite output and am now wondering if anyone has …
... 've converted mine to composite output and am now wondering if ...Childhood moments with my SpeccyHey everyone. The other day I randomly came across a tumblr page called "Me and My ZX Spectrum" ([url]http://meandmyzxspectrum.tumblr.com[/url]) …
... ever used was the RF output and the video artifacts and ... C64 game that looked so low-resolution, I could see the ...August sales[COLOR="Blue"]I have about everything listed here in stock. But some of it must be made ready (with custom wishes). [B]Buying directly will save you…
... power sockets, keyboard sockets, ear/mic sockets (used)[/B]:
- ... Spectrums have crisp composite video output:[/B]
- 48K ... on the original RF output connector and added internal ... circuitry for composite video output
[B] ...Ben Versteeg's September sales[COLOR="Blue"][B][SIZE="6"]Add-ons[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophetinter…
... power sockets, keyboard sockets, ear/mic sockets (used)[/B]
? ... Spectrums have crisp composite video output:[/B]
- 48K ... on the original RF output connector and added internal ... circuitry for composite video output
[B] ...Playing Fifa 2014 for 20 minutes, and already EA has ruined the game for me...I bought FIFA 2014, wanted top play it for a long time now. mostly I just Play Fifa & PES for the Master League/ Career mode I've noticed that most…
... brat screaming at his headphones mic.
Also, my team ... I'm playing with a low budget team, I can only ...Another way to add audio input on a +2 - No more low level sound problem !Hi all, Last week, with 3 friends, we participated to a modelism / games / hobbies meeting, and we made a retro computing stand... (big succes, I'll…
... of my iPod was too low, I could see the bars ... it works flawlessly, no more low level sound problems, mp3 are ...Ben Versteeg's November sales[COLOR="Blue"][B][SIZE="6"]Almost ready[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophet…
... power sockets, keyboard sockets, ear/mic sockets (used)[/B]
? ... Spectrums have crisp composite video output:[/B]
- 48K ... on the original RF output connector and added internal ... circuitry for composite video output
[B] ...Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…
... only active when A0 is low. When A0 is high, ... Now if IORQGE is held low because it's shorted to ... value, when A0 goes low it could be that the ... IORQ pin whenever A0 is low (or especially when A0 ... relatively slowly on an NMOS output), causing the ULA to sometimes ...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…
... has a 3.5 mm mic input). I saved it and ... ' of the Speccy and the output of my dictaphone and tried ... contacts). Tried different combinations of Mic and Ear sockets. Tried different ...PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…
... rom selection.
The #/ZXROM output of the CPLD drives the ... level (2.6V) is too low to disable the ZX Spectrum ... , nrd, nwr, nreset, nm1;
output nzxrom, ncsrom, ncsram, ncsfdc, ncsjoy ... | a9 | a0 | a7 | a8); // all low
assign in231 = nmreq & ...Weird tv output by spectrum 48kI recently got a spectrum 48k and hooked it up to my tv. After finding channel 36, I get a really weird picture for the spectrum, why is that? Below…
... the channel selected and the output.
[IMG]http://i1059.photobucket ...
