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  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... I don't understand what contention point means, but I assume ... (each ULA type has different contention points, correct?) Can you ... 3's opcodes has less contention points, it is contended ... might have more contention points for opcodes, but contention is [B] ...
    omega omega May 2007 Development
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... . Having exact cycle emulation and contention handling it should just work ... /> However, Jasmin does not handle contention yet. So don't expect ...
    micapolos micapolos May 2007 Emulators
  • Reconditioned Sam Coup?, two drives + more...I've popped up a reconditioned Sam Coup&#233; on eBay as a Buy-It-Now listing. [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=11012902618…

    ... of the Spectrum due to contention issues - a phenomenon that I ...
    Quazar Quazar May 2007 Sales
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... is memory and I/O contention in "physical" terms. How does ... look unlikely to me, since contention only take place when reading ... start to design and implement contention emulation.

    Regards,
    micapolos micapolos May 2007 Emulators
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... is both why you get contention only for contended memory, and ... things like IR contention and I/O port contention, neither of which ... with our best knowledge of contention: if you want the latest ...
    Philip Kendall Philip Kendall May 2007 Emulators
  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... I don't understand what contention point means, but I assume ... (each ULA type has different contention points, correct?) Can you explain ... per frame and no additional contention hits on performance over the ... and they all can cause contention. The +2A/+3 machines ...
    Woody Woody May 2007 Development
  • Anyone used WinAPE before?Erm ... sincerest apoligies all around ... yes, I'm trying to run a game (Death Pit) in WinAPE but the silly bugger who made the emulator doesn't mak…

    ... fine.

    It does detect my joystick (at least in ...
    Skarpo Skarpo May 2007 Chit chat
  • Why can't I use the keyboard?Playing some old Speccy games recently, there's a fair number that ask you to enter your name using the joystick (Trashman for example). Why not let …

    ... a emulator is a couple detect whether the kempston interface is ...
    BruceNorton BruceNorton May 2007 Games
  • WHERE: Best sources for repairing Sinclair hardwareI already collected quite some information, like the official repairers guide, but still got loads of hardware that I'm not able to repair. Any point…

    ... he had a device to detect where your Spectrum was broken ...
    Dr BEEP Dr BEEP May 2007 Hardware
  • Fuse 0.8.0.1 releasedI have just uploaded version 0.8.0.1 of the [url=http://fuse-emulator.sourceforge.net/]Free Unix Spectrum Emulator[/url] to SourceForge and WoS, wher…

    ... and Fortinet anti-virus programs detect the executables as being 'suspicious ...
    zub zub May 2007 Emulators
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... stop the CPU clock when contention occurs). That will probably be ...
    Winston Winston May 2007 Hardware
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... stop the CPU clock when contention occurs). That will probably be ...
    Avian Avian May 2007 Hardware
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    ... of memory (and possibly IO) contention is required. Without it, the ... /> You can read about memory contention [URL="http://www.worldofspectrum.org ...
    micapolos micapolos May 2007 Emulators
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    ... of memory (and possibly IO) contention is required. Without it, the ... /> You can read about memory contention [URL="http://www.worldofspectrum.org ... ,
    Michal.[/quote]
    Thanks. Contention is another thing I'm ...
    rich_chandler rich_chandler May 2007 Emulators
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    ... ]You can read about memory contention [URL="http://www.worldofspectrum.org ...
    Woody Woody May 2007 Emulators
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    Is contention necessary for the border routines ...
    rich_chandler rich_chandler June 2007 Emulators
  • Border emulationHow is the border emulated to do all the fancy little tricks such as in Aquaplane? I've got some basic border emulation working but it only displays…

    [QUOTE=karingal;193731]Is contention necessary for the border routines ...
    Dunny Dunny June 2007 Emulators
  • 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…

    ... keyboard profile
    - Fixed memory contention for +2A/+3 models (Overscan ...
    Metalbrain Metalbrain June 2007 Emulators
  • 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…

    ... offenders? I've optimized the contention code and was thinking about ...
    Metalbrain Metalbrain June 2007 Emulators
  • 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…

    ... offenders? I've optimized the contention code and was thinking about ...
    Laser Laser June 2007 Emulators
  • 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
  • Psion Revo - Spectrum EmulationHello all. I've just bought a Psion Revo (8mb) for 20 quid and was hoping to use it for emulating the Spectrum. A few years back I had a Psion 3a bu…

    ... seem to be able to detect more than two simultaneous key ...
    MattLamb MattLamb 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
  • Spectrum+3Hi all, Got my Spectrum+3 from eBay this afternoon. Powered it up to find the drive belt is a no go. So I need a drive belt, Ok easy to get hold of n…

    ... is HD. The drive will detect this and change recording mode ...
    Phu Phu July 2007 Hardware
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  • How to detect 48k modeHow can you detect if a 128k machine is in 48k mode (from an emulation point of view, not via BASIC or machine code)?<br /> <br /> Checking the curre…
  • Z80 cycle contentionHi,<br /> Does anybody knows exactly when the ula halts the Z80 clock during a memory r/w cycle?<br /> I mean which Z80 clock cycle, T1 or T2?<br /> …
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  • I/O contention model questionHi everyone,<br /> <br /> Sorry for my poor english. Together with a friend we are working on ZX<br /> Spectrum 48k implemented in FPGA. We have foun…
  • Contention and floating bus timingHello,<br /> <br /> 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.…
  • Contention detectionJust a thought, based on discussion elsewhere...<br /> Is there any way of telling if reads/writes are being contended around the time that they happ…
  • +3 how to detect if a file exist ?Need help.<br /> <br /> I am making a generic menu to my compilations over the spectrum +3.<br /> Exist some way programatically to detect if some fi…
  • detect deleteHi everone<br /> <br /> How can you detect that the caps + 0 (delete) is selected. Im making a word program for fun, but i need to be able to delete …
  • Contention: LDI vs LD (ss), rAccording c.s.s. FAQ:<br /> <br /> instruction LD (ss),r breakdowns as pc:4,[b]ss:3[/b]<br /> and LDI as pc:4,pc+1:4,hl:3,[b]de:3,de:1 x 2[/b]<br /> …

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