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  • Blizzard's Rift in Spinanyone else having trouble playing blizzard's rift in spin, the game loads ok, you can select controls, select a system to visit but when you select …

    ... which is the totally different floating bus behaviour (which isn't present ...
    Dunny Dunny May 2008 Emulators
  • The Speccy game you try first with a new emulatorI'm excited about the possibility of getting Speccy games up and running on the Nintendo Wii, which led me to think about which game I'd try first...…

    I always thought Manic Miner was the canonical test of an emulator.

    If you want to probe the boundaries of emulator accuracy, Dark Star with its fancy border effects of Arkanoid which uses the floating bus behaviour are probably more rigorous.
    Matt_B Matt_B June 2008 Games
  • Quotes from Speccy GamesTry to find this one: "No Sax please, We are Egyptians!"

    ... game in question uses the "floating bus" for synchronisation with the display ...
    Digital Prawn Digital Prawn September 2008 Games
  • Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…

    ... .cgi?id=0004494]Sidewize[/url]: floating bus
    [/list]
    After that ...
    Philip Kendall Philip Kendall September 2008 Emulators
  • Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…

    ... /> Indeed, this is the "Floating bus" issue mentioned by Phillip.
    floating bus" instead.

    ... prone to using this "floating bus" method of screen synchronisation ... do not have this floating bus behaviour, and therefore ...
    Digital Prawn Digital Prawn September 2008 Emulators
  • Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…

    One very small addition to Digital Prawn's comprehensive explanation above is that the later releases of Arkanoid were modified so as not to use the floating bus.
    Philip Kendall Philip Kendall September 2008 Emulators
  • Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…

    ... as not to use the floating bus.[/QUOTE]

    So the ...
    Arjun Arjun September 2008 Emulators
  • Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…

    ... (or did not) emulate the floating bus at the time.

    floating bus code with a [b]halt ... precisely timed replacement for the floating bus code in an official retail ...
    Digital Prawn Digital Prawn September 2008 Emulators
  • Questions about the Speccy and it's emulationOut of interest, and to raise another interesting discussion, I have some questions about the Spectrum and it's emulation; 1) Is everything known ab…

    ... .cgi?id=0004494]Sidewize[/url]: floating bus
    [/list]
    After that ...
    chop983 chop983 September 2008 Emulators
  • I just learnt that Spectrum has 1kB of unused ROMWell, man learns through all his life. I have just discovered that Spectrum has over 1 kilobyte of unused ROM memory, from address 14446 to 15615. Al…

    ... pushing random values onto the floating bus -- or they don't bother ...
    polomint polomint October 2008 Development
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... bottom border by reading the floating bus and looking for a particular ...
    Matt_B Matt_B October 2008 Development
  • RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…

    ... / +2(grey), then data from floating bus is writed to paging port ...
    velesoft velesoft October 2008 Games
  • People holding back the emulation sceneAs mentioned once again in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=22690"]this thread[/URL], some people think Ramsoft willfully…

    ... the first version of the floating bus documentation that was released. We ...
    Dunny Dunny November 2008 Emulators
  • Batman crashes on MobileZXDear all, I'm one of the authors of MobileZX ([url]https://sourceforge.net/projects/mobilezx/[/url]) and find that Batman crashes within a few secon…

    There's a few more games listed in the [URL="http://scratchpad.wikia.com/wiki/Floating_bus"]floating bus[/URL] section of the tech wiki that probably also fail then.
    Bob Stains Bob Stains February 2009 Emulators
  • TIMEX Sinclair 2068 => ZX Spectrum/Timex2048?Hello. I have opportunity to buy Timex Sinclair 2068. According to www sites dedicated to Timex machines, TS 2068 can handle only 7&#37; (!) of Spe…

    ... 50hz, different T-states, no floating bus on port #FF). More than ...
    Mister Beep Mister Beep March 2009 Hardware
  • Data bus at interrupt timeIt is "well known" that some peripherals can put values other than 0xff on the data bus at interrupt time, thus meaning that IM2 is slightly more fid…

    ... 0xff on the data bus at interrupt time, thus ... with pull-up data bus via resistors 150 Ohm) ... fixed vector table adress (correct floating bus value):
    ===========================================
    ... K-MOUSE return to data bus correct 8bit low adress (# ...
    velesoft velesoft March 2009 Hardware
  • Games not working on Timex 2048Timex 2048 is a very good Spectrum 48k clone, over 90% of games work fine. But there are also not working games or working but not properly. Is there…

    ... the SCLD data bus from the z80 data bus with resistors as ... done instead with a standard bus transceiver chip. A consequence is ... TC2048 doesn't support a floating bus on any port (that I ...
    Fred Fred April 2009 Games
  • Maze Mania - How did they do it?Hi, I was looking at the game "Maze Mania" by Hewson Consultants, written in 1989. The game can be downloaded from here [URL]http://www.worldofspec…

    ... just behind beam generating screen (floating bus check). when it is finished ...
    Fikee Fikee May 2009 Development
  • Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.

    ... .com/wiki/Z80"]here[/URL], floating bus tests via [URL="http://scratchpad ...
    Bob Stains Bob Stains May 2009 Emulators
  • Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.

    ... .com/wiki/Z80"]here[/URL], floating bus tests via [URL="http://scratchpad ...
    FrankT FrankT May 2009 Emulators
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ...
    in a,(c) ; read floating bus on cycle 14338

    in a,(c) ; read floating bus on cycle 14339

    Bob Stains Bob Stains May 2009 Development
  • Russian Translations...As i have once again been reminded (by the "Homebrew games" thread), there are some funky looking Russian games that I can't play due to not understa…

    ... aware of the +2A/+3 "floating bus" (or lack of) issue and ...
    Digital Prawn Digital Prawn June 2009 Games
  • Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.

    ... /> Contended IN... passed
    Floating bus... passed
    Contended memory... ... /> Contended IN... passed
    Floating bus... passed
    Contended memory... ... Contended IN... failed (0xfd)
    Floating bus... passed
    Contended memory... failed ...
    rich_chandler rich_chandler June 2009 Emulators
  • Which speccy do you use & why ?I`m lucky enough to have the choice of using a 48K original, a 48K+ and a 128+2B Sometimes I prefer the 128 because of it`s nice keyboard, crisp pic…

    ... issues affecting the +3 (no floating bus, edge connector differences, broken sound ...
    chev chev July 2009 Hardware
  • Which speccy do you use & why ?I`m lucky enough to have the choice of using a 48K original, a 48K+ and a 128+2B Sometimes I prefer the 128 because of it`s nice keyboard, crisp pic…

    ... issues affecting the +3 (no floating bus, edge connector differences, broken sound ... one for tenner.

    Bus issue I'm not that ... that to work on +3 bus anyhow and don;t use ...
    Hercules Hercules July 2009 Hardware
  • +2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …

    ... effects routine also used the floating bus so I've bodged around ...
    Bob Stains Bob Stains July 2009 Games
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... (Z80 undocumented opcodes, memory contention, floating bus, fixed number of T-states ...
    Madonna Mk 2 Madonna Mk 2 August 2009 Development
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... tricks they threw at it (floating bus, contention, whatever), then, to me ...
    csmith csmith August 2009 Development
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... rely on that complex ULA/floating bus behaviour, and any FPGA-based ...
    Madonna Mk 2 Madonna Mk 2 August 2009 Development
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... grey" models do implement the floating bus behaviour, and the only 128K ...
    mcleod_ideafix mcleod_ideafix August 2009 Development
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