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<1…16171819202122…34>
  • just thinking about ...compo for zx 16k ? anyone ?

    ... ]You could call it the Contention Competition, since all the lower ...
    Fikee Fikee November 2009 Development
  • Need help with interrupts againI'm fighting to understand how interrupts code handling works I'm trying to set my simple own interrupt routine, as I don't want to be dependent on …

    ... the ula into thinking bus contention occurs. At least that was ...
    Alcoholics Anonymous Alcoholics Anonymous November 2009 Development
  • More colours in existing games?I have been trying to follow the various threads about the new ULA and more colours. I don't understand quiet a lot of it as back in the day all I di…

    ... too. Currently documenting the CPU contention, which is proving tricky to ...
    csmith csmith December 2009 Emulators
  • More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.

    ... hat, and maybe the memory contention could have been avoided?), but ...
    ewgf ewgf December 2009 Emulators
  • Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…

    ... fetch by the program causes contention while the screen draws and ... 't properly deal with two contention events close together if it ...
    Alcoholics Anonymous Alcoholics Anonymous January 2010 Games
  • Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…

    ... fetch by the program causes contention while the screen draws and ...
    Jmk Jmk January 2010 Games
  • Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…

    ... similar. The lack of memory contention gives them a boost over ...
    joefish joefish January 2010 Games
  • Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…

    ... , with close timings and memory contention. Second generation (1990-1995), including ... Pentagon, has no memory contention and different timings (because it ...
    Shiru Shiru January 2010 Games
  • Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…

    ... clones with original ZX Spectrum (contention), TR-DOS (loadings in the ...
    Shiru Shiru January 2010 Games
  • Best Spectrum game from 2009Ok, its almost 2010, and we have to decide which was the best game this year :) Miles Mad Mission [url]http://www.worldofspectrum.org/infoseekid.cg…

    ... clones with original ZX Spectrum (contention), TR-DOS (loadings in the ...
    joefish joefish January 2010 Games
  • Sinclair Accounts 1980-1985Sinclair accounts docs from 1980 to 1985 are available on my website. [url]http://www.zxdesign.info/sinclair[/url] Apart from the figures, which ar…

    ... .. It's a bone of contention between me and the 'powers ...
    csmith csmith February 2010 Sinclair Miscellaneous
  • iXpectrum 1.1 added touch keyboard and ULAplus support.Hi, a new release for iXpectrum. ;) I added a touch keyboard in landscape and portrait mode. I think it is very usable and let you play text adventu…

    ... 3gs or you could disable contention mode to gain some fps ...
    Seleuco Seleuco February 2010 Emulators
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    ... goal when compatibility and memory contention will be fixed or implemented ...
    koseidon72 koseidon72 February 2010 Emulators
  • Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]

    ... is quicker even allowing for contention. The MSX also has a ...
    joefish joefish March 2010 Sinclair Miscellaneous
  • CPI emulationI'm currently writing Sinclairean's emulation assembly for the CPI/CPD/CPIR/CPDR instruction group. Does anybody know what exactly the behavior of th…

    All 5 are contended (48K/128K ULAs, not for the +2a/+3) with contention based on the address in HL. And there is no write as you say :)

    The same goes for the extra 5 for the repeating varieties.
    Woody Woody March 2010 Emulators
  • Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]

    [QUOTE]The NTSC Spectrum has the same 6,5,4,3,2,1,0,0 contention pattern as the 48K machine, but starting at tstate 8959 rather than 14335.[/QUOTE]

    Aaaarrggghhh!!! That's what I meant when I said "a lot less time to play with in 60 Hz" :D
    Madonna Mk 2 Madonna Mk 2 March 2010 Sinclair Miscellaneous
  • Windows 7 - Best Speccy Emulator?As the title says, what's the best speccy emulator that will run Windows 7? Ta :)

    ... is something wrong with mutliple contention on different ports, and spin ...
    Arda Arda March 2010 Emulators
  • Windows 7 - Best Speccy Emulator?As the title says, what's the best speccy emulator that will run Windows 7? Ta :)

    ... is something wrong with mutliple contention on different ports, and spin ...
    Arjun Arjun March 2010 Emulators
  • Tiscali (now Talk Talk)anyone else use tiscali? Is anyone else suffering from the broadband being a bit flakey, it's seems to come and go - you'll be fine for a few minute…

    ... that with the 50:1 contention ratio on ADSL and Talk ...
    rwap rwap March 2010 Chit chat
  • Have a real 48k Speccy? yes ? I need your help.Im looking to run this quick test on as many [COLOR="Red"](only)[/COLOR] 48k Spectrums as possible [B][COLOR="Red"]files moved[/COLOR][/B] [URL="ht…

    ... of tests to check the contention values I added to our ...
    Richard_Butler Richard_Butler March 2010 Development
  • Resolution & Memory Question ...Hi, I'm hoping someone with some experience writing an emulator, or a vast knowledge of all things Spectrum can help me answer the following questio…

    ... RAM, but without the interfering contention.

    The screen starts ...
    joefish joefish April 2010 Emulators
  • Xpectroid Android ZX Spectrum emulator is out.You can download Xpectroid 1.0 free from Android Market Place. [url]http://www.androlib.com/android.application.com-seleuco-xpectrum-BtDq.aspx[/url]…

    ... menu?.... You can turn of contention mode to speed up emulator ...
    Seleuco Seleuco April 2010 Emulators
  • My emulator has a CPU bug, any ideas?.Hi all, I am writing a Speccy emulator in PureBASIC but have an odd bug. The spectrum interprets the odd numbers incorrectly whenever they are typed…

    ... they test for, such as contention, it's easy enough to ...
    gasman gasman April 2010 Emulators
  • Mistake in the 128K technical FAQ?[url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url] [quote]Memory banks 1,3,5 and 7 are contended.[/quote] Really? I thought i…

    ... them is clearly affected by contention and the other isn't ...
    Woody Woody April 2010 Hardware
  • DivIDEo - streaming video on the DivIDEThis has been a bit of a personal holy grail for years and years, so I'm very pleased to announce the release of DivIDEo, my streaming video system f…

    ... only place I run into contention is when writing to screen ...
    gasman gasman May 2010 Announcements
  • So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…

    ... number of T-states that contention lasts without getting unacceptably far ...
    Winston Winston June 2010 Hardware
  • So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…

    ... jitter if a lot of contention happens in a very short ...
    Winston Winston June 2010 Hardware
  • "Programming the Spectrum in Assembly" series in Micro MartI see that Shaun Bebbington is starting a series of articles in Micro Mart magazine on how to program in assembly for those who might know a little b…

    A far bigger effect is that the +2A/+3 have less contention than the 48K/128K.
    Philip Kendall Philip Kendall June 2010 Sinclair Miscellaneous
  • "Programming the Spectrum in Assembly" series in Micro MartI see that Shaun Bebbington is starting a series of articles in Micro Mart magazine on how to program in assembly for those who might know a little b…

    ... the +2A/+3 have less contention than the 48K/128K.[/QUOTE ... +2A/+3 there are less contention situations, but the effect can ...
    Metalbrain Metalbrain June 2010 Sinclair Miscellaneous
  • "Programming the Spectrum in Assembly" series in Micro MartI see that Shaun Bebbington is starting a series of articles in Micro Mart magazine on how to program in assembly for those who might know a little b…

    ... +2A/+3 there are less contention situations, but the effect can ... -world algorithm which experiences more contention on a +2A/+3 than ... experiences [i]much[/i] less contention on a +2A/+3 than ...
    Philip Kendall Philip Kendall June 2010 Sinclair Miscellaneous
<1…16171819202122…34>

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