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ZX81 back porch fix using LM1881Hello! Has anyone here did the back porch fix for ZX81 using LM1881? I did it this weekend and instead of clear black on white i got black on dark g…
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One more thought: The voltage divider in the circuit has ... normal?
Also, the measured voltage from 7805 is not 5V ... -
AY playerdon't know if somebody needs it, but... a took old AYLET and changed it to zx80ex/libz80./zymosis. [url=http://repo.or.cz/w/k8aylet.git]here[/url] is…
don't know if somebody needs it, but... a took old AYLET and changed it to zx80ex/libz80./zymosis. [url=http://repo.or.cz/w/k8aylet.git]here[/url] is git sources. yep, i'll took beeper emulation from FUSE... once. it works for now, heh.
alsa/ ... -
Audio frequency range from modulator?Anyone know what the frequency range of the audio that's output through the RF? In particular for the 128k/+2. I've checked the manuals but couldn'…
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I know the AY chip is capable of producing ... what matters when mastering an AY recording from an emulator or ... AY player is replicating the RF ... -
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 …
... active). It shows a maximum voltage of 778mv and a minimum ... -
Issue 3 power problemHi all, I have an issue 3 board with an odd power problem, I have no -5V in fact, measuring the voltage on this line leads to a surprising result : …
... -5V in fact, measuring the voltage on this line leads to ... -
ZX Game compo CC'12 - 18-19 AugustI am pleased to announce that the largest in Russia, computer art festival [B][URL="http://chaosconstructions.ru/english"]Chaos Constructions 2012[/U…
... screens and 20 kilowatts sound, AY / Beeper music will be played ... -
Moar TR-DOS to tape conversions!I have posted three lame disk-to-tape conversions through snapshotting before, now (I guess) it's time to bring the rest of my complete collection he…
... ... 128K mode includes tons of AY music, 48K mode is yet ... -
Need repair advice - noviceHello, does anyone know where I can get a professional to rejuvenate my 128 heatsink model? I know nothing of electronics and can't solder for toffee…
... can mess up loading.
- AY sound is more than half ... -
Successfully updated Issue 2 48k to 128k?Thanks to the donation by PMSR and through the very patient teachings of Velesoft, I have updated the Issue 2 to work with 128k. However. I have yet …
... have yet to add an AY chip to provide sound out ... this due to lack of AY chip, or is there anything ... -
New ZX81 Game ReleasesIt is nice to see another two titles recently released for the ZX81 by Revival Studios - [url]http://www.revival-studios.com[/url] Both games also …
... of the ZXpand Joystick and AY sound available.
The ... -
Very weird +2 problem.After two days, I'm still fighting this grey +2. Symptoms: When I first got it, there were stray pixels on the screen, and stray lines and colours. …
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…
... ) features, such as itegrating an AY-3-8912 core, or PS ...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 …
... 64K video RAM
Stereo AY sound output mixed with beeper ...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…
... task? Instead of an analogue voltage controlled oscillator being used to ...ZX Spectrum music remixes/coversOK this may have been covered before but are there any sites where there are re-mixes/covers of Speccy game music? By this I mean versions recorded …
... /or virtual instrumentation rather than AY versions of a beeper tune ...NEW GAME 48K: "Crapbert Buttslut" (and 2 others games)PL title: Zbylut Owrzodzień w kamiennym, kurwa, zajebanym czarcim kręgu. ENG title: Crapbert Buttslut in the muthafuc.kin' damn stone-ci…
... /> for ZX Spectrum 48K with AY-interface.
Based on AGD ... /> YERZMYEY: idea, screenplay, graphic, levels, AY-music (in-game).
Mister ... on ZX Spectrum 48K (with AY-interface for in-game music ...Next Castle 2012 Party AnnouncedOkay, I've just found out that Newart has posted [URL="http://speccy-live.untergrund.net/2012/10/next-castle-party-%d1%81%d0%bf%d0%b1-03112012/"]this…
... is for music on beeper, AY or TurboSound. There's a ...Diagnosing a strange software fault in a 48kHi, A friend gave me a 48k, which I am very keen to restore. The spectrum 48k was my first computer over 20 years ago and I owe my ability to code t…
... /> I have tested the supply voltage and reseated the rom. All ...Semi-Dead Spectrum - Help RequestedI have finally got my hands on my two old Spectrums - neither of which work, but ideally I hope to get both of them working again. Spectrum number o…
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I have replaced the Voltage Regulator and the Spectrum now ...Lighter: Better Than Raw[CENTER]So, [B](Burn The) Lighter's back[/B]! And don't ask me why I had to skip issue two at that point. [IMG]https://dl.dropbox.com/u/95941449/Bur…
... just as right on 48K+AY (no AY music due to memory ...Lower Memory - Why Multiple Voltages?Having spent much of the weekend working on getting my old Spectrum working, my Dad (who is visiting) and I were chatting about the schematic. Given…
... - which only has a supply voltage of +5V, why on earth ...Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…
... waveform at about 295 KHz. AY Chip is very slightly warm ...just late afternoon relax...and 3 months of live...1. Hardware joke [B]ANGRY SPACE INVADER [/B] [url]http://www.youtube.com/watch?v=IToay3TsEvs[/url] [LIST] [*]Dimensions : 82 x 50 mm [*] Colo…
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[LIST]
[*]AY / Yamaha sound genearotor running at ... ( You can insert Ay 3-98912 or AY 3-8910)
[*] 2 ...JSpeccy v0.92A new JSpeccy version has been released. Summary of changes, - Screen redrawing is a bit optimized now and a bug when speed > 1 has been corrected. …
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- Corrected a bug in AY-3-8912 emulation that affects ...ZX +2 Grey with quiet ULA soundHi all. I come here for advice before messing up with the main boards and end up killing them for good. I got this grey ZX +2 with a very low ULA a…
nq/skrju Birthday GiftSo, n1k-o a.k.a. nq has recently celebrated his 30th birthday, and then this little gift popped up, which perfectly works on 48K+AY. [IMG]http://spe…
... , which perfectly works on 48K+AY.
[IMG]http://speccy ...Velesoft's ZX128+2 with 1.5MB memoryMy old ZX128+2 PROFI (grey model - spanish version) for sale here: [url]http://aukro.cz/super-zx-spectrum-128-2-1-5-mb-i2738723874.html[/url] Back s…
... .5mm stereo with ABC stereo(AY) mixed with speaker
+ load ...48k faultyHi guys! I have a 48k that, currently, presents 2 problems: 1 - Can?t sync to TV correctly. I get a lot of noise and the characters appear to be inc…
... , what are the recomended power voltage and amperage?
Sorry ...