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<1…23242526272829…34>
  • 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…

    ... is generated by the ULA, Chris Smith's ULA book shows it ...
    Winston Winston August 2012 Hardware
  • Simple AY library in z88dk/CI was interested to see if I could make the 128k AY chip work, and as there wasn't any library on it, I just made one for fun. It's certainly not th…

    ... ()
    {
    uint i,j,q;

    ay_volume1(15);
    Timmy Timmy August 2012 Development
  • BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…

    ... control keys
    KEY_UP = in_LookupKey('q');
    KEY_DOWN = in_LookupKey('a');
    printf("Use J/K/Q/A to change");
    printAt ...
    Einar Saukas Einar Saukas August 2012 Development
  • Currah microspeech schematics?Has anyone got details on the currah microspeech? I've found the ROM online and the manual is available but that seems to be about all. What I'm afte…

    ... CPLD's to emulate the ULA. I'd like to try ...
    Basher Basher August 2012 Hardware
  • 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. …

    ... +2:

    CPU
    ULA
    AY-3-8912
    Spirantho Spirantho August 2012 Hardware
  • Issue 3 board - Free to good homeI have an issue 3 board that someone could scavenge for spares or even repair if they're willing to pay the p&p. I got it off someone on Amibay in a…

    ... .

    There is no ULA (which was working) and it ...
    napoleonblownaparte napoleonblownaparte August 2012 Sales
  • 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…

    ... replacement for the Sinclair ULA chip fitted in Spectrum ... originally generated by the ULA are not present here ... plug-in this new "ULA", and solder a piece ... all pins of the ULA socket to FPGA interface ... to prevent the replacement ULA to touch the upper ...
    mcleod_ideafix mcleod_ideafix August 2012 Hardware
  • Problems with stereo kit for AYSomeone has bought a stereo kit from me to add to his 128K ZX Spectrum. Problem however is that one of the channels is a less loud than the other tw…

    ... (ABC/ACB) cable
    - Disconnected ULA wires

    There is ...
    bverstee bverstee September 2012 Hardware
  • DivIDE CompatabilityThe Spectrum is 30 show proved a valuable event for investigating issues with Spectrums which do not work with the DivIDE.... The ones I sell are ma…

    ... for repair displayed some possible ULA problems as without the DivIDE ...
    rwap rwap September 2012 Hardware
  • 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…

    ... 3.5MHz clock as the ULA generates it internally, and the ... in perfect sync with the ULA only about halfway across putting ...
    Winston Winston September 2012 Hardware
  • 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…

    ... board, and an Issue 7 ULA.

    Spectrum number two ... 3 with an Issue 6 ULA. It is number two I ... service manual suggests replacing the ULA, but that hasn't made ...
    ramsrc ramsrc October 2012 Hardware
  • semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…

    ... the verified all connections to ula and cpu via diodes d1 ... might be defective ?? ( i assume ula but how to prove that ... ?? )

    Ula is ofcourse the "6C001E-6 ... or maybe has a working ula for sale ??


    techy techy October 2012 Hardware
  • Games Menu v2Hello WoS, Following [URL="http://www.worldofspectrum.org/forums/showpost.php?p=651506&postcount=234"]JTB's Games Menu v1[/URL], here's one I did w…

    ... done by means of the Q,A, or 6,7 keys ...
    XvarZ XvarZ October 2012 Announcements
  • New Translated Game - Star Heritage! (Demo ver.)[IMG]http://zx.logtech.ru/si0.png[/IMG] The demo is essentially the first chapter of the full version and only differs from the latter in th…

    ... :[/B] [/U]

    [I]Q, 9 - up
    A, 8 ...
    Shadow Maker Shadow Maker October 2012 Brand new software
  • WTB: Interface 1 ULAsHi everybody, I suspect it's unlikely, but does anybody have any spare Interface 1 ULA's lying around? Would be happy to send a bit of cash in excha…

    Hi everybody,

    I suspect it's unlikely, but does anybody have any spare Interface 1 ULA's lying around? Would be happy to send a bit of cash in exchange for any - I have about 4 ULA-less IF1s here. :)

    Thanks!
    Spirantho Spirantho October 2012 Wanted
  • 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…

    ... next modes is automatically activated ULA raining protection.

    - is ... full speed without slow down. ULA can slow down only CPU ... ZX is used only for ula video data.

    - new ...
    velesoft velesoft October 2012 Sales
  • Resurrecting the FAQ wikiprevious threads: [url]http://www.worldofspectrum.org/forums/showthread.php?t=28168[/url] [url]http://www.worldofspectrum.org/forums/showthread.php?t…

    ... the meta-FAQ:

    Q. Why can't we just ...
    gasman gasman October 2012 Sinclair Miscellaneous
  • ZX-Preview 2.1 publishedDear friends and ZX-Speccy fans! Today I've released a new version of ZX-Preview. I completed the to-do-list for the program and added the following…

    ... /> * ability to display tiles and ULA+ screen$

    Hope you ...
    clausjahn clausjahn October 2012 Emulators
  • The great 128k ConversionWell, I am not sure if it is going to be great. Hopefully it will! This evening, I set about getting my Issue 6A Spectrum Plus working. I suspecte…

    ... from the factory with the ULA socket in upside down.
    ramsrc ramsrc October 2012 Hardware
  • The Hobbit, Empire, and an interviewHi all, I've got a little article on the making of The Hobbit in the latest issue of Empire magazine (we've run a huge feature on the film). I inte…

    ... 're interested, here are the Q&As...

    [B ...
    Bad Horsey Bad Horsey November 2012 Games
  • Cycle exact emulation?I was just reading the thread about +3 emulation having different results on different emulators, and it made me wonder if any Spectrum emulators hav…

    ... actions of some instructions, exact ULA behavior prediction, and the way ...
    ewgf ewgf November 2012 Emulators
  • Strange failure modeI just had a 48K machine "fail" in what seemed like an odd way. Problem: Random keypresses (not from any particular part of the key matrix) appearin…

    ... all the inputs to the ULA to make sure the pull ... a possible problem with the ULA.

    But when I ...
    Winston Winston November 2012 Hardware
  • Brief report on Retroma?Well, that's the last retro event of 2012 for me at least - five days of Retroma??a have just come to a close. This event is held as part of the Wee…

    ... such as Chris Smith's ULA book.

    [img]http ...
    Winston Winston November 2012 Sinclair Miscellaneous
  • Spectrum 128K & Philips CM8833Hello to everybody, My Philips CM8833 is one of my favourite monitors of all time, as it accepts connections from anything I can think of with the e…

    ... amplitude, but the Vsync (meaning ULA Pin 23) is only 2 ...
    Falco-F8L Falco-F8L November 2012 Hardware
  • Microdrive without interface 1 on a Spectrum +2The [B]divide [/B]is not compatible with the interface 1. however, I would like to use the microdrive on a Spectrum +2. it would be possible to recre…

    ... in the interface 1 without ULA?
    or someone has an ...
    DerSchatten DerSchatten November 2012 Hardware
  • Standard for upgrading the original ZX Spectrum[B][U]1. Easily connect external ULA and video RAM.[/U][/B] [url]http://zx.clan.su/forum/8-102-576-16-1352476666[/url] The method consists in blocki…

    ... ][U]1. Easily connect external ULA and video RAM.[/U][/B ... the CPU clock of the ULA, and connect the external clock ... lock the clock on the ULA, set the zero level at ...
    Black_Cat Black_Cat November 2012 Hardware
  • New Game: Dave InfuriatorsHere is a new game for both 48K Speccy and 512KB SAM Coup? [IMG]http://i1233.photobucket.com/albums/ff397/adg2011/specyload.gif[/IMG][IMG]http://i12…

    ...
    change direction - m
    q - quit back to title
    spud spud November 2012 Brand new software
  • New Game : Dead By DawnMy brother has finally decided to finish off a game he's been working on for years....[b]Dead By Dawn![/b] [img]http://1.bp.blogspot.com/-CU4VJsYlLd…

    ... : Left
    X : Right
    Q : Turn left
    W : Turn ...
    deadpan666 deadpan666 November 2012 Brand new software
  • divIDE +3e: How can I put games into hard disk?I've got a +3, a divIDE and the +3e ROMs. I want to copy some games in the CF card so my +3e could execute them from BASIC ("disabled" divIDE, loadin…

    ... anything after starting). Chase H.Q. would qualify (in 128k mode ...
    Zup Zup December 2012 Games
  • How far are we from a single-chip 100% ZX Spectrum compatible solution?I really like to read about the projects of some geniusses here on WoS who are working on their ZX Spectrum clones. IMHO some main steps that have b…

    ... description of the ZX Spectrum ULA
    2. the clones without ... the ULA but with only logic chips ...
    3. the ULA plus/SPECTRA solutions inside an ...
    bverstee bverstee December 2012 Hardware
<1…23242526272829…34>

Latest Posts

  • Minor British Sports that did become games on the ZX Spectrum
    dmsmith on April 22
  • I bought an accoustic guitar. How do you play it?
    Maroc's Other Projection on April 22
  • Goodbye Z80
    moggy on April 22
  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on April 22
  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on April 22
  • I am currently watching.....
    Antiriad2097 on April 22
  • European Software Titles with an English version
    harriusherbartio on April 22
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on April 22
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on April 22
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

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