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  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... of my main bones of contention with the GP2X. :-(

    Laser Laser June 2007 Emulators
  • "Add Watch" Debug for EmulatorsHi, I am working on completing a JSW-style game that I started in 1991. Although programming using TASM and Spectaculator is far easier than on th…

    ... 't think it emulates memory contention as it's a clone ...
    icabod icabod June 2007 Emulators
  • "Add Watch" Debug for EmulatorsHi, I am working on completing a JSW-style game that I started in 1991. Although programming using TASM and Spectaculator is far easier than on th…

    ... time to look into adding contention to the code, so we ...
    icabod icabod June 2007 Emulators
  • "Add Watch" Debug for EmulatorsHi, I am working on completing a JSW-style game that I started in 1991. Although programming using TASM and Spectaculator is far easier than on th…

    ... time to look into adding contention to the code, so we ...
    BloodBaz BloodBaz June 2007 Emulators
  • specpediahow come there isn't a speccy wikipedia? there seems to be one for everything else, star wars, pokemon, lost, ds homebrew. i know this site has all …

    ... the Z80 processor (i.e contention etc) at the moment, hopefully ...
    rich_chandler rich_chandler June 2007 Sinclair Miscellaneous
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... /> What's new:
    - Memory contention emulation is now optional. It ... -220 MHz.
    - Even when contention is enabled, it's not ... to 145/175 MHz. Without contention emulation it's left to ...
    Metalbrain Metalbrain June 2007 Emulators
  • Disable onboard memoryWould this work...? Access to onboard I/O can be disabled by holding IORQGE high. Would it be possible to create a MEMRQGE in a similar way to disa…

    ... controls the lower RAM (including contention by withdrawing the CPU clock ...
    Winston Winston June 2007 Hardware
  • Emulator Comparison ChartHi. In a similar vein to [URL=http://www.ppest.org/zx/zxse.php]Piters[/URL] comparison of various ZX emulators, I've been looking at adding some deta…

    ... trying to test. For memory contention and display timings, Shock Megademo ...
    Philip Kendall Philip Kendall June 2007 Emulators
  • Yesteryear's Computers.Ahhhh ... [URL="http://www.computerworld.com/action/article.do?command=printArticleBasic&articleId=9023960"]back in the day[/URL] when a 300mb system…

    ... .
    I blew up the IO-interface while building a transfer ...
    Dr BEEP Dr BEEP June 2007 Chit chat
  • speed of my Broadband connectionI have done a speed test on my Broadband connection and got a result of 2.5 and 4.2 megabits, the thing is i have just upgraded my connection to 20me…

    ... . Plus there's general exchange contention, and other issues surrounding the ...
    Laser Laser July 2007 Chit chat
  • Splitting Images tzx maybe not perfectI've been hacking this game and its loader. Also the save routine is intact in this game. It saves a block with a pilot length of 801 pulses. Test…

    ... in emulation to do with contention or something.
    FrankT FrankT August 2007 MIA/STP/SDP
  • Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…

    ... to be a significant memory contention timing issue....

    Anyway ... before - all due to this contention issue.

    Full details ...
    csmith csmith August 2007 Hardware
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... 's possible![/QUOTE]

    Io (Jupiter) and Rhea (Saturn) are ...
    Einar Saukas Einar Saukas August 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    [QUOTE=Einar Saukas;211629]Io (Jupiter) and Rhea (Saturn) are ... I agree. I think for Io, this will imply a space ... station at Io, due to the volcanic activity ... significant size.

    Ideally Io would be yellow, due to ...
    Digital Prawn Digital Prawn August 2007 Development
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... "Fuse"'s model (specifically, memory contention at 14335).
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... "Fuse"'s model (specifically, memory contention at 14335).[/QUOTE]

    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    It's the new contended memory test I wrote this afternoon that I'm interested in here (although the contended IO one may be interesting as well) :-)
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... /> It would crash if the contention is not right, at least ... align correctly on the first contention and the rest is then ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    I've just updated [url=http://www.shadowmagic.org.uk/spectrum/fusetest.zip]fusetest[/url] to include a dedicated memory contention test program. What results do we get with that on various things?
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... there was enough known about contention, it might have happened that ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... the actual timing of the contention and byte fetches).

    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    I'm obviously missing something here, as I don't see how ulatest3, which runs in uncontended memory and an uses an uncontended port, can be used to test anything to do with contention.
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... for tests to measure memory contention?

    ie where do ... they assume the contention applies? T3, when the actual ...
    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... [B]not[/B] applying the contention. This results in the IR ...
    csmith csmith September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... now finally understand how your contention scheme works (and gives identical ...
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... now finally understand how your contention scheme works (and gives identical ... remember correctly, Harlequin applies memory contention at 14338, FAQ says it ...
    Patrik Rak Patrik Rak September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... understand it... the wiki assumes contention is applied before T1, but ... Chris is applying contention before T3. Hence the "wiki ...
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... than doing

    tstates += contention[ tstates ]
    tstates++;
    tstates ... /> tstates++;
    tstates++;
    tstates += contention[ tstates ]
    tstates++;

    with contention starting at 14337/8. From ...
    Philip Kendall Philip Kendall September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... is just one type of contention, which starts at 14336.
    Woody Woody September 2007 Emulators
  • Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…

    ... the ULA starts applying the contention only when ~MREQ is still ...
    Patrik Rak Patrik Rak September 2007 Emulators
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