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  • what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…

    ... this is exacerbated by memory contention between it and the video ...
    Matt_B Matt_B November 2008 Sinclair Miscellaneous
  • what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…

    ... , it loses more to memory contention so that tends to even ...
    Matt_B Matt_B November 2008 Sinclair Miscellaneous
  • what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…

    ... screen memory, based on the Harlequin CPLD ULA...
    Winston Winston November 2008 Sinclair Miscellaneous
  • what were the things the Speccy architecture was good for?I don't know a hell of a lot about all the different computers hardware and I wanted to know if the way the Spectrum was built lent itself to certain…

    ... faster, having no screen memory contention combined with the 6502's ...
    Jimmy Jimmy November 2008 Sinclair Miscellaneous
  • RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…

    ... it wasn't for memory contention.
    gasman gasman November 2008 Development
  • RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…

    ... it wasn't for memory contention.[/quote]
    Don't you ...
    omega omega November 2008 Development
  • RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…

    ... on a real Spectrum, memory contention eats up too much time ...
    gasman gasman November 2008 Development
  • Fuse for Mac OS X beta releasesA beta version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/projects/fuse-for-macosx/[/u…

    ... (but probably not perfect) TS2068 contention (Philip Kendall).
    [*] Various other ...
    Fred Fred November 2008 Emulators
  • CSS Wales Winter Meet 2008Csmith, Gasman and I attended.

    ... /> Another chance to see the Harlequin clone in action
    More ...
    Scottie_uk Scottie_uk November 2008 Sinclair Miscellaneous
  • ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …

    ... will get hit by memory contention which will tend to distort ...
    Matt_B Matt_B November 2008 Sinclair Basic
  • ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …

    ... an example of how bad contention is, try using the Magical ... sounds awful in Spin with contention turned on though; music for ... timing loops to take memory contention into account. That's probably ...
    Matt_B Matt_B November 2008 Sinclair Basic
  • ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …

    ... sounds awful in Spin with contention turned on though; music for ... timing loops to take memory contention into account. That's probably ...
    jp44 jp44 November 2008 Sinclair Basic
  • Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…

    ... him? His work with the Harlequin display might give us a ...
    Dunny Dunny December 2008 Emulators
  • Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…

    ... him? His work with the Harlequin display might give us a ...
    Vertigo Vertigo December 2008 Emulators
  • Dangerous Allram Mode On +2a / +3ZX Spectrum 128+2A and +3 support allram feature on port 1FFD. On this ZX models is very dangerous set allram if is connect any interface with extern…

    ... well known phenomenon of bus-contention.

    This is where ...
    Mark Wills Mark Wills December 2008 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    ... and ZXSpin may follow the Harlequin design, so I assume this ... also happens with Harlequin. May Chris check this, please ...
    Winston Winston January 2009 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    ... following the cycle requiring the contention to be applied.

    Bob Stains Bob Stains January 2009 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    ... following the cycle requiring the contention to be applied.[/QUOTE]

    Contention would apply when IORQ+A0 ...
    mcleod_ideafix mcleod_ideafix January 2009 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    [QUOTE=mcleod_ideafix;330315]Contention would apply when IORQ+A0 = ... Tech Info wiki! I/O contention isn't a simple on ...
    Philip Kendall Philip Kendall January 2009 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    ... emulator? If it's not contention, what is it?

    mcleod_ideafix mcleod_ideafix January 2009 Hardware
  • Other forums and why they piss me offI was on this site where you can download comics and ended up in the comicbook forum (my blame there) and all of a sudden just because I was giving m…

    ... that people who denied my contention that the word "Paki" is ...
    ewgf ewgf January 2009 Chit chat
  • Hi-colour gamesDoes anyone remember some of the games that used something called Ho-colour? Like the options page on the Agent X games, and a few others. If memory …

    ... know, pentagon has no memory contention (well, I might be totally ...
    Arda Arda January 2009 Games
  • MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…

    ... could be added to the Harlequin.[/QUOTE]

    This graphic ...
    velesoft velesoft January 2009 Development
  • 25 years with the SpectrumTo paraphrase JFK, ask not what your Spectrum can do for you, but what you can do for your Spectrum. Well I've done quite a bit since I joined the sc…

    ... Spectrum SE compatibility to the Harlequin
    * Contributed routines from SE ...
    Jumping Stack Jumping Stack February 2009 Sinclair Miscellaneous
  • 25 years with the SpectrumTo paraphrase JFK, ask not what your Spectrum can do for you, but what you can do for your Spectrum. Well I've done quite a bit since I joined the sc…

    ... need to know about memory contention, accurate Z80 emulation, proposed changes ...
    ewgf ewgf February 2009 Sinclair Miscellaneous
  • New Spectrum Computer DevelopmentHey does anyone know of any decent new Spectrum clones being developed? I find it amazing how Zilog still produce a Z80 backwards compatible chip (an…

    ... into mass production is the Harlequin.[/QUOTE]

    Economy of ...
    Winston Winston February 2009 Hardware
  • Component count/modern replacementsThere is a thread/project for replacing the old memory with simms There is also the ULA replacement. There's DEATH's composite replacement. What els…

    ... be compatible with 48K (ram contention), and there is no garantee ...
    roko roko February 2009 Hardware
  • What was the best 16K Spectrum GameOK, I'm putting up a poll, but its not really about the poll, but a chance to focus on the 16K gems. (The poll, taking those with the best WoS rating…

    ... 2 interrupts properly and memory contention slows code down by around ...
    Matt_B Matt_B February 2009 Games
  • Who Are You Guys..... ???I'm curious to learn about the guys (and no doubt gals) who keep this forum alive. Were you all Spectrum-heads from the start? Did any of you come la…

    ... forward to reading Chris' ULA/Harlequin book.
    RST#08 RST#08 March 2009 Games
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... cycles between interrupts. The memory contention timings are also different between ...
    joefish joefish March 2009 Development
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  • Fixed Speccy Software. And which games remained unfixed?
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