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<1…16171819202122…34>
  • Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…

    Hi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker but, in the end - I just learned how to use Soundtracker anyway (Thanks to ZXF for those tutorials!).
    RetroPhase2014 RetroPhase2014 December 2015 Sinclair Basic
  • Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …

    ... not faulty, it has a clock input and a good power ...
    Zorn Zorn February 2016 Hardware
  • New version emulator ZEsarUX-4.0Hi I have uploaded a new version of my emulator ZEsarUX 4.0. You can download it from the project web page: http://sourceforge.net/projects/…

    ... changes:

    Added Pentagon Timing support
    Added AZERTY keyboard ...
    chernandezba chernandezba March 2016 Emulators
  • NEW GAME - Thunderturds 2 (16K edition)[img]http://forum.retro-computers.co.uk/uploads/default/original/1X/4b5e63f7039987ca157e693f5ab4eb278df60038.gif[/img][img]http://forum.retro-compute…

    ... the right order against the clock.

    Keys QAOP or ...
    daveysludge daveysludge April 2016 Brand new software
  • So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…

    ... work directly with a 4FSC clock, which means it could be ...
    Peter Mulholland Peter Mulholland April 2016 Hardware
  • New snake game (Znake)I've been working on a Snake clone as a little side project: https://github.com/chriswyatt/znake It currently has some timing issues (e.g. it j…

    ... />
    It currently has some timing issues (e.g. it jerks ... far :)

    For the timing issues, I suppose I will ...
    chriswyatt chriswyatt April 2016 Games
  • Simple snake clone (Znake)I wrote a simple snake clone: https://github.com/chriswyatt/znake It lacks a title screen, difficulty selection and has some timing issues, but…

    ... , difficulty selection and has some timing issues, but apart from that ...
    chriswyatt chriswyatt April 2016 Brand new software
  • Harlequin turbo mode ( 7 MHz )Hi, All. Sorry for my bad english. I make Harlequin mod - turbo mode ( CPU clock 7MHz ) for Harlequin. Could you be so kind to write your opin…

    ... Harlequin mod - turbo mode ( CPU clock 7MHz ) for Harlequin.
    Could ...
    tetroid tetroid May 2016 Hardware
  • ZX-Uno first impressionsZX-Uno first impressions Hello: I received my ZX-Uno last Saturday and I wanted to give everyone my first impressions of this latest ZX Spectru…

    ... /> Check CRC
    Keyboard
    Timing
    Contended RAM
    DIVMMC ...
    andydansby andydansby May 2016 Hardware
  • R registerI'm cross-posting this as a spin-off of a [url="http://www.worldofspectrum.org/forums/discussion/52748/zx-spectrum-cartridges/p2"]thread in "Hardware…

    ... large margin on the refresh timing, so it doesn't matter ...
    RMartins RMartins June 2016 Emulators
  • help with broken +2 greyHello, the other day I was trying to record sounds from my grey +2 "sound" socket to an old cassette recorder. Suddenly the screen went to a solid…

    ... of the z80 shows a clock signal. But it's round ... was expecting. I think the clock is also missing the "contended ...
    saldali saldali June 2016 Hardware
  • Reading Spectrum+ keyboard versus rubber keyI've started trying to learn Spectrum machine code after a 30 year break. I've encountered something that's puzzling me and I'm hoping that someone c…

    ... a possible absence of a clock signal on the edge connector ...
    LoonyJetman LoonyJetman July 2016 Hardware
  • New game: Sam Mallard - The Case of the Missing Swan[img]http://i66.tinypic.com/o8z6vd.png[/img] [code] Sam Mallard – The Case of the Missing Swan. Version 1.0 by Ersh in 2016 The clock had tur…

    ... in 2016

    The clock had turned midnight and I ...
    Ersh Ersh August 2016 Brand new software
  • Composite video ghost image on ZX Spectrum 128K +2Hi, I have a ghost image on the composite video out on my ZX Spectrum 128K +2 and have run out of ideas of what could be wrong. Does anybody have a…

    ... using a breadboard.
    - the clock input into the TEA2000 looks ...
    pdj102 pdj102 September 2016 Hardware
  • Contended memory article on WikipediaYeah, apparently there's one. https://en.m.wikipedia.org/wiki/ZX_Spectrum_Contended_Memory [quote] However, the ULA must wait for a Z80 read or wr…

    ... can stop the Z80's clock and access the memory. As ...
    Hikaru Hikaru December 2016 Sinclair Miscellaneous
  • Just had the weirdest power cut ever Oothis morning i was posting Johnny Cash songs on google+, then i took the dog out. Came back noticed the downstairs lamp was flickering so thought it …

    ... , nothing, then noticed the bedside clock was off (yet strangely the ...
    mel the bell mel the bell December 2016 Chit chat
  • TK90X/TK95X specific software?Is there such a thing? Also: When setting the ULA in 50Hz (PAL-N) mode the timing appears to get quite close to the original ZX as seen with the sho…

    ... 50Hz (PAL-N) mode the timing appears to get quite close ...
    Shockwav3 Shockwav3 January 2017 Software
  • Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …

    ... attribute
    xor a ; 04ts ; (timing)
    xor a ; 04ts ;
    ld a, ixh ; 08ts ; (timing)
    ld a, $00 ; 07ts ...
    FrankT FrankT February 2017 Assembler
  • LumoAnyone played this yet? It's free with this month's Playstation Plus games. You start off as a kid at a computer fair and get digitized by a Spec…

    ... finite lives and race the clock ("just like 1985!" as the ...
    Grunaki Grunaki March 2017 Chit chat
  • Need help from people with CRT TVs (50 Hz)I’m wrapping up the development of my [url="https://www.worldofspectrum.org/forums/discussion/54152/new-game-a-yankee-in-iraq-2017-a-shoot-em-up"]gam…

    ... colors—I use it for timing various routines.

    [b ...
    Ast_A_Moore Ast_A_Moore March 2017 Development
  • Chrome - ZX Spectrum clone with Italian rootsSome you might know that the Italian ZX Clone been around for a while. The project was started by Mario Prato in 2004 and last year was re-created by…

    ... clone is very interesting (128K timing, AY, FDD, D+ & Kempston ...
    Claudius Claudius May 2017 Hardware
  • ROM emulation in softwareHi, first of all -- I only have shallow / uni knowledge of hardware, electronics, and physics. So forgive me for asking things that are out of that …

    ... the ZX Spectrum ROM chip timing shows that its' read cycle ...
    tstih tstih June 2017 Hardware
  • Question about emulators under Linux Mint.[b](*delurks*)[/b] Hi. I've recently started using Linux Mint, and I'm having trouble with a Spectrum emulator for it. (I'm also having trouble …

    ... sse3 ssse3) bmips: 6649
    clock speeds: max: 1667 MHz 1 ...
    solar_penguin solar_penguin July 2017 Emulators
  • Spectrum games collection for saleHi all I'm having a clear out and all my old ZX Spectrum games must go. The reason being is I'm now marrried and I need to give the other half so…

    ... Accolade
    Gregory Loses his clock Mastertronic 1989
    Growing pains ...
    schneil schneil July 2017 Sales
  • What mods do you recommend for a +2aHello all, I have recently got a +2a, that is running nicely. I'm thinking of modding it. I have read that the +3e rom is a good option. what else…

    ... speed controlled by an internal clock to lock to 3.5Mhz ...
    cnewbyuk cnewbyuk August 2017 Hardware
  • Introducing SpectREMYep, yet another Spectrum emulator, this one being for Mac OS. Writing my own Spectrum emulator has been a bucket list item for a while. While I'm…

    ... its passing all Z80 and timing tests I've thrown at ... know if you break the timing.

    For those who ...
    ByteJunky ByteJunky November 2017 Emulators
  • Test of screen switching timings.I modified the btime.tap test by Jan Bobrowski to explore the timing of screen switching. The new test, ptime-128, produces different results on diff…

    ... Jan Bobrowski to explore the timing of screen switching. The new ...
    weiv weiv November 2017 Emulators
  • ZEsarUX 6.0 stableHi! ZEsarUX 6.0 stable is out! This is a major version, it includes some new machines and a lot of new features and bug fixes :) You can downlo…

    ... features: Sprite chip, Layer2, RTC clock for esxdos, 2 MB RAM ...
    chernandezba chernandezba November 2017 Emulators
  • Tape Turbo loadersI wonder what was fastest turbo loader used back in 80. And what was fastest turbo loader reliable with common tapes? Btw. I remember a web page…

    I wonder what was fastest turbo loader used back in 80.
    And what was fastest turbo loader reliable with common tapes?
    Btw. I remember a web page discussing timing of various turbo loaders but cannot find it anymore, maybe someone knows?
    catmeows catmeows December 2017 Development
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