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<1234567…34>
  • Morcar's Selling or trading threadThinning out my collection so i can get more of what i want. If you want anything on here let me know and we can work out something. I am also up f…

    ... Sinclair Smash Tape 14 : Alien Evolution, Stormlord (demo), Last Duel (demo ...
    morcar morcar February 2014 Sales
  • 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…

    ... cope with writing to ULA-contended memory of an external system ...
    joefish joefish April 2014 Hardware
  • If you want a good laugh (real life David Brent)After having this recommended to me, I have to share it with anyone who wants to really laugh but also feel slightly bad at how little we've really g…

    ... our three billion years of evolution. It's like if David ...
    ewgf ewgf May 2014 Chit chat
  • New version Emulator ZEsarUX-1.0Hi I have uploaded a new version of my Spectrum/ZX80/ZX81 emulator. This is a major stable version, with real timing for all the models and with hi-…

    ... 2014 - Rainbow edition

    Contended memory and real timing for ... of the Inves Spectrum +: no contended memory, snow in border, colour ...
    chernandezba chernandezba May 2014 Emulators
  • Pyskool 1.1.2Pyskool 1.1.2 has been released. Pyskool is a remake of Microsphere's Skool games written in Python and Pygame. It's designed to be very customisabl…

    ... produced by code running in contended memory). Hopefully you'll be ...
    SkoolKid SkoolKid June 2014 Announcements
  • Memoirs of a Spectrum Addict - The MovieHello there!! My name is Andy Remic, novelist (16 books out so far!) and ZX Spectrum fanatic. I wrote a 48K/128K Spectrum game in 2009 called BIOHEL…

    ... were part of the Spectrum evolution then please get in touch ...
    Andy Remic Andy Remic July 2014 Announcements
  • Slap in the face for modern gamers number 45,107As you probably know, Gamestop (an American video games retailer chain) has plans to offer exclusive gameplay/game sections in AAA games, which is ap…

    ... games, which is apparently the evolution of the current exclusive DLC ...
    ewgf ewgf July 2014 Chit chat
  • New from Paul Farrow, the ZXC4This is exciting stuff!!!! Sorry if ive stepped on your toes Paul, wanted people to hear about it!!! [QUOTE]Hi I?m happy to announce the release o…

    ... cartridge which represents the next evolution of the ZXC range of ...
    Macc Macc July 2014 Hardware
  • New version emulator ZEsarUX-1.2Hi I have uploaded a new version of my ZX80/81/Spectrum emulator at [url]http://sourceforge.net/projects/zesarux/[/url] Changes are: Added emulat…

    ...
    Added option to disable contended memory
    Added fuller audio ...
    chernandezba chernandezba August 2014 Emulators
  • XPECCY (Lin/Win)im not author of this emulator. Contacts of author you may take on [URL]http://xpeccy.info[/URL] - non official home page. cpu: Z80: all (un)docume…

    ... -mode), 320х200, 640х200);
    ZX-Evolution (BaseConf, TSConf);
    Pentagon color ...
    rasmer rasmer November 2014 Emulators
  • The Spectrum Show 35Yes, it's that time again... Episode 35 of The Spectrum Show... In this episode...we get all the Sinclair news and top selling Spectrum games from De…

    ... 1985.
    I explore the evolution of game cover art.
    Paul-J Paul-J November 2014 Announcements
  • Understanding contentionI'm trying to understand contention and its implications when some "weird" bus cycles (such as I/O cycles with I/O addresses in the contended memory …

    ... /O addresses in the contended memory area) are issued ... TW, but memory is always contended in T1?

    contended period has just begun, ... O bus cycle to a contended port (port $00FE ... at the start of contended area too would enlarge ...
    mcleod_ideafix mcleod_ideafix May 2015 Hardware
  • ANN: Tipshop updated Saturday, 06 June 2015Saturday 06 June 2015<br>Welcome to the May update (eh? Ed).. Shh! Archie Robins appears to have decided sleep is something that happens to other peo…

    ... , Alien 8, Alien Destroyer, Alien Evolution, Alien Highway, Alien Storm,
    hackersanon hackersanon June 2015 Announcements
  • New 48K Spectum emulator on the Windows StoreHi, I've just uploaded a new "Free" Spectrum 48K emulator to the Windows Store, see: http://apps.microsoft.com/windows/en-gb/app/specwin48/4d54…

    ... /> I've read all about contended memory but as yet haven ...
    SpeccyBoy SpeccyBoy July 2015 Emulators
  • I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…

    ... part of the memory is contended.
    Alternatively, the ULA could ...
    wilsonsamm wilsonsamm August 2015 Hardware
  • [NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…

    ... bus’
    Emulation of the contended memory timings.
    Pixel to ...
    jcgamestoy jcgamestoy September 2015 Emulators
  • No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…

    Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum.

    If I had a stock 48k Speccy and I could wave a magic wand to remove the memory contention, what software would break?

    Would games still ...
    cbmeeks cbmeeks November 2015 Development
  • What was the most hyped Spectrum game?What was the most hyped Spectrum game? I don't mean the most advertised (that would be something like Knight Rider, which was advertised in all 2,867…

    ... way you look at their 'evolution' in the 1980s).

    ewgf ewgf December 2015 Games
  • Shadow of the Unicorn loader for +2A / +3hi, i have tried to load SotU with the [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0023000"]RAM loader from Fraser Ross[/url], which is l…

    ... ram page #4 should be contended on the +2A/+3, to ... whether the WoS page about contended ram pages on +2A/+3 ... paged in at 0x0000, not contended on the real machine?
    Kio Kio February 2016 Games
  • 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/…

    ... Timex mode 512x192
    Fixed contended memory timings on Spectrum 128k ...
    chernandezba chernandezba March 2016 Emulators
  • New Game - Cuboid CaptorWell, here it is, the (somewhat underwhelming) Cuboid Captor! This game was written for the ZX DEV 2015 competition and (to my knowledge) was the …

    ... and for good reason: the contended memory makes it sound like ...
    PROSM PROSM March 2016 Brand new software
  • ZX Diagnostics v0.33 releasedHi everyone, I'm pleased to announce the release of v0.33 of zx-diagnostics. This release contains the following changes: - ULATest: Detect …

    ... +2A/+3 were also triggering contended fail notifications
    - Bugfix: Memory ...
    balford balford April 2016 Hardware
  • Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…

    ... particular emulator doesn't handle contended memory correctly, but relative differences ...
    Sol_HSA Sol_HSA April 2016 Development
  • +2 Gray ProblemI'm trying to repair a +2 gray that behaves differently at every boot up. Some rare times I can get the selection window but pretty soon the characte…

    ... ? It must be on the contended RAM part since its causing ...
    gtsamour gtsamour 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…

    ...
    Keyboard
    Timing
    Contended RAM
    DIVMMC
    NMI ...
    andydansby andydansby May 2016 Hardware
  • While My Guitar Gently BleepsInteresting program on Radio 4 today about chiptune music producers and performers. Didn't hear any Spectrum beeps but there were plenty of Nintendo…

    ... />
    [quote]Isy traces the evolution of chiptune from early electronic ...
    Oktup Oktup June 2016 Chit chat
  • 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…

    ... clock is also missing the "contended memory" pauses which I've ...
    saldali saldali June 2016 Hardware
  • Contended Memory, literallyDoes anyone else have the sort of memory where they have trouble just picking out info cold? I know we had a discussion about memory sometime last mo…

    Does anyone else have the sort of memory where they have trouble just picking out info cold? I know we had a discussion about memory sometime last month, but...

    For example, I like to think I'm a fairly competent developer, well the company ...
    Luny Luny December 2016 Chit chat
  • 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…

    Yeah, 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 write to complete before it can stop the Z80's clock and access the memory. As the ULA has no ...
    Hikaru Hikaru December 2016 Sinclair Miscellaneous
  • Funny jokes, videos, and so on requiredSelf pity alert! My sciatica is playing up again, so if anyone can take my mind off it for even a minute with a funny video or joke or whatever then …

    ... also making me wonder why evolution never gave us the ability ...
    ewgf ewgf April 2017 Chit chat
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