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<1234567…34>
  • Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks

    ... even had hints towards memory contention and IO port contention. I'm sure ... an accurate description of contended memory. It was incomplete and some ...
    rich_chandler rich_chandler November 2005 Emulators
  • Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks

    ... by Raul Gomez to include memory contention emulation that was good enough ... who managed to emulate that memory contention.
    Metalbrain Metalbrain November 2005 Emulators
  • When is a clone not a clone?If a Spectrum is built from scratch, using new components where available, is it a clone, copy or something else? See, I won an unpopulated Spectrum…

    I saw long ago some schematic of ULA replacement, with about 50-60 logic chips. Very likely it is not 100% compatible - memory contention hardly can be same.
    piters piters May 2006 Hardware
  • speccy speechCan anyone tell me what the first spectrum game to feature digitised speech? Was it Ghostbusters? I think it is but i might be wrong!

    ... speech got garbled by the memory contention.)
    Matt_B Matt_B June 2006 Games
  • Which Speccy is the best to buy...I'd be using it for games really, and thats about it. I'd like a 128k but I seem to remember people saying 128k +2's had problems playing some games.…

    ... get screwed up by the memory contention though?
    Matt_B Matt_B June 2006 Wanted
  • Which Speccy is the best to buy...I'd be using it for games really, and thats about it. I'd like a 128k but I seem to remember people saying 128k +2's had problems playing some games.…

    ... />
    "In 48K mode the memory contention is close enough. The only ...
    psj3809 psj3809 June 2006 Wanted
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    When switching Memory Contention Model from ZX to Pentagon, ... was drawn in the Pentagon Memory Contention Model, and it then says ...
    FrankT FrankT August 2006 Emulators
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    [QUOTE=FrankT]When switching Memory Contention Model from ZX to Pentagon, ... was drawn in the Pentagon Memory Contention Model, and it then says ...
    Dunny Dunny August 2006 Emulators
  • GP2X handheld - ZX Spectrum emu goodnessIt's probably been covered here before, but I've spent the last week going crazy over the GP2X Linux-based, dual-core handheld that can emulate somet…

    ... :
    - I've enabled the memory contention emulation, and now Manic Miner ...
    Metalbrain Metalbrain August 2006 Emulators
  • Which would be fasterSay you want to use a variable value of 0 to 255 in a BASIC program, which way would be fastest? Say for arguments sake you wanted to use two variabl…

    ... the value in non-contended memory above RAMTOP, i.e.
    Forget about trying to escape memory contention in BASIC. You can't ...
    Matt_B Matt_B September 2006 Development
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... /> [1] Actually, it does disable memory contention to save a few cycles.
    Jon Needle Jon Needle November 2006 Emulators
  • +2 / +2a : What's the difference ?+2 / +2a : What's the difference ? I still haven't managed to find out this yet. Yes, I know I'm an idiot.

    ... differences in processor speed and memory contention.
    Matt_B Matt_B February 2007 Sinclair Miscellaneous
  • I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…

    ... A15 (without mreq) for memory contention so the cpu is halted ... T1. For i/o contention, A0 + iorq needs ... the i/o or memory operation, the ula starts ... cycle 14337. if the contention becomes active after cycle ... describing I/O contention.

    [/ ...
    Mp Mp February 2007 Development
  • Groundbreaking gamesWhich games really broke new ground? I mean the ones that actually got around the hardware limitations of the Spectrum. For example: Aquaplane - f…

    ... back the sample from contended memory which really mangles the timings ... run it in Spin with memory contention turned off it sounds a ...
    Matt_B Matt_B February 2007 Games
  • Groundbreaking gamesWhich games really broke new ground? I mean the ones that actually got around the hardware limitations of the Spectrum. For example: Aquaplane - f…

    ... that. However, it's the memory contention that's the real problem ... 16K machine; the only uncontended memory is the ROM and the ...
    Matt_B Matt_B February 2007 Games
  • Sound / Kempston EmulationHi I'm working on a spectrum emulator and I need som help. i still have loads left with the Z80 (not fully implemented yet) but I'm trying to get a h…

    ... you're planning on adding memory contention then you most definitely want ... to be in the "Contended Memory" section found on [URL="http ...
    Woody Woody March 2007 Emulators
  • Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…

    ... * tricky!

    Actually, for memory contention - my own Z80 project (when ... be designed to read the memory when the Z80 asserts RFSH ... is not wanting to use memory at all which is ample ... the next byte from screen memory, and then push this to ...
    Winston Winston March 2007 Sinclair Miscellaneous
  • Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…

    ... actually takes after you include memory contention. I just show the time ...
    obo obo March 2007 Emulators
  • Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…

    ... actually takes after you include memory contention. I just show the time ... 100% accurate measure because of memory contention and different timings on conditional ...
    TrueVideo TrueVideo March 2007 Emulators
  • ZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…

    ... Pentagon mode, which has no memory contention. Other than that, it behaves ... machine will. The lack of memory contention will make things move quite ...
    Dunny Dunny April 2007 Emulators
  • ZXSpin 0.62 Available nowAs promised (and only a [i]little[/i] past the deadline) here is the latest version of ZXSpin. Many bugs have been fixed, and a few new features add…

    ... Pentagon mode, which has no memory contention. Other than that, it behaves ... machine will. The lack of memory contention will make things move quite ...
    mulder mulder April 2007 Emulators
  • non standard loader bar coloursAs with my speedloader thread, when did non standard colours start to appear and who came up with the idea and what was the reaction?

    ... need to "write" to 32 memory addresses at a time (the ... cause timing problems due to memory contention so such a routine would ... aside, it is due to memory contention that you will not find ...
    BloodBaz BloodBaz April 2007 Games
  • SpeedloadersSince I read Lee Tonks' post about the speedloaded version of MM3 he did, I've been playing around with various speedload routines I found on TTFn & …

    ... />
    [QUOTE=Philip Kendall;51298]Memory contention would send your timings off ... and eventually it was contended memory that was causing the problem ...
    BloodBaz BloodBaz April 2007 Sinclair Miscellaneous
  • GP2X - Spectrum EmulationHi all. Looking for advice on the GP2X and (especially) the quality of its ZX Spectrum emulation. Has anybody anything to say about the console - is…

    ... and z80 format bugs, enabled memory contention emulation and added an option ... . It's due to contended memory emulation, which was only half ... this weekend to add proper contention emulation, looking the FAQ and ...
    Metalbrain Metalbrain May 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…

    ... and OUT
    - Replaced the memory contention emulation using a more precise ...
    Metalbrain Metalbrain May 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…

    ... and OUT
    - Replaced the memory contention emulation using a more precise ... ]

    Excellent news. However, memory contention isn't all that important ...
    Dunny Dunny May 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…

    ... =Dunny;189870]Excellent news. However, memory contention isn't all that important ...
    Metalbrain Metalbrain 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…

    ... Aquaplane, proper emulation of memory (and possibly IO) contention is required. Without ... />
    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…

    ... Aquaplane, proper emulation of memory (and possibly IO) contention is required. Without ... />
    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…

    ... ;193465]You can read about memory contention [URL="http://www.worldofspectrum.org ...
    Woody Woody May 2007 Emulators
<1234567…34>

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