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  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    ... following the cycle requiring the contention to be applied.[/QUOTE]

    Contention would apply when IORQ+A0 ...
    mcleod_ideafix mcleod_ideafix January 2009 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    [QUOTE=mcleod_ideafix;330315]Contention would apply when IORQ+A0 = ... Tech Info wiki! I/O contention isn't a simple on ...
    Philip Kendall Philip Kendall January 2009 Hardware
  • IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…

    ... emulator? If it's not contention, what is it?

    mcleod_ideafix mcleod_ideafix January 2009 Hardware
  • Is anyone wiling to help an islander decide where to by???I?m trying to decide where to by a 48k and a 48k+ as complete as they can be. Although I have an ebay account I?m yet reluctant to by there and I?m …

    ... can get a Timex Computer TC2048 which is 99% compatible, better ... never thought of the Timex TC2048 until you mentioned it (a ...
    virgilio virgilio January 2009 Wanted
  • Other forums and why they piss me offI was on this site where you can download comics and ended up in the comicbook forum (my blame there) and all of a sudden just because I was giving m…

    ... that people who denied my contention that the word "Paki" is ...
    ewgf ewgf January 2009 Chit chat
  • Hi-colour gamesDoes anyone remember some of the games that used something called Ho-colour? Like the options page on the Agent X games, and a few others. If memory …

    ... know, pentagon has no memory contention (well, I might be totally ...
    Arda Arda January 2009 Games
  • MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…

    ... ]

    Timex Computer 2144(TC2048 with 128kB upgrade) or Russian ...
    velesoft velesoft January 2009 Development
  • MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…

    ... ]

    Timex Computer 2144(TC2048 with 128kB upgrade) or Russian ...
    velesoft velesoft January 2009 Development
  • MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…

    ... use same videoram layout as TC2048.

    VIDEORAM 1:
    velesoft velesoft January 2009 Development
  • 25 years with the SpectrumTo paraphrase JFK, ask not what your Spectrum can do for you, but what you can do for your Spectrum. Well I've done quite a bit since I joined the sc…

    ... MacSpectacle and FUSE
    * Add TC2048 support to vbSpec
    * Add ...
    Jumping Stack Jumping Stack February 2009 Sinclair Miscellaneous
  • 25 years with the SpectrumTo paraphrase JFK, ask not what your Spectrum can do for you, but what you can do for your Spectrum. Well I've done quite a bit since I joined the sc…

    ... need to know about memory contention, accurate Z80 emulation, proposed changes ...
    ewgf ewgf February 2009 Sinclair Miscellaneous
  • Component count/modern replacementsThere is a thread/project for replacing the old memory with simms There is also the ULA replacement. There's DEATH's composite replacement. What els…

    ... be compatible with 48K (ram contention), and there is no garantee ...
    roko roko February 2009 Hardware
  • What was the best 16K Spectrum GameOK, I'm putting up a poll, but its not really about the poll, but a chance to focus on the 16K gems. (The poll, taking those with the best WoS rating…

    ... 2 interrupts properly and memory contention slows code down by around ...
    Matt_B Matt_B February 2009 Games
  • 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…

    ... an emulator cartridge. Also the TC2048 still won't let you ...
    Mister Beep Mister Beep March 2009 Hardware
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... cycles between interrupts. The memory contention timings are also different between ...
    joefish joefish March 2009 Development
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... cycles between interrupts. The memory contention timings are also different between ... [1] lets you know your contention pattern[2].

    [1 ...
    Philip Kendall Philip Kendall March 2009 Development
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... you run into the memory contention issues, which means the code ...
    joefish joefish March 2009 Development
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... 48K but 211 on a TC2048.

    You can check ...
    chev chev March 2009 Development
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... /> Interestingly, the way that the contention works actually serves to regulate ... line. It's having less contention on the +2A that mucks ...
    joefish joefish March 2009 Development
  • +2 differences?I know there were a few, but can't find out which would suit my needs best. So, all I need is a unit with a contains a tape deck, and plays pretty…

    ... the grey ones. Only the contention can't be (easily) modified ...
    chev chev March 2009 Hardware
  • Timex 2048 can't see divIDEToday my divIDE with CF adapter arrived. I connected it to my Timex 2048, switched the computer on and nothing happened. I mean "(C) 1982 Sinclair Re…

    ... anything like that in any TC2048. Scary.
    Hopefully it's ...
    Mister Beep Mister Beep April 2009 Hardware
  • Timex 2048 can't see divIDEToday my divIDE with CF adapter arrived. I connected it to my Timex 2048, switched the computer on and nothing happened. I mean "(C) 1982 Sinclair Re…

    [QUOTE=Mister Beep;345244]
    I have never seen anything like that in any TC2048. Scary.
    Hopefully it's reparable.[/QUOTE]

    Actually it looks like one is upside down :-))
    Alcoholics Anonymous Alcoholics Anonymous April 2009 Hardware
  • Timex 2048 can't see divIDEToday my divIDE with CF adapter arrived. I connected it to my Timex 2048, switched the computer on and nothing happened. I mean "(C) 1982 Sinclair Re…

    ... might be a cause of contention would be the FAT16 format ...
    Zetr0 Zetr0 April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... SCLD to the PAL TS2068/TC2048.

    Unlike the ZX81 ...
    Fred Fred April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... SCLD to the PAL TS2068/TC2048.

    Unlike the ZX81 ...
    superfo superfo April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... different to the PAL ULA (contention starts 15 cycles earlier).
    Fred Fred April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... up with a contention tester to check the contention start and pattern ... from Phil's contention testing program ...
    Fred Fred April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... or NTSC?

    Also TC2048 or TC2068, they use LM1377 ...
    superfo superfo April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    [QUOTE=superfo;345800]Also TC2048 or TC2068, they use LM1377 ...
    csmith csmith April 2009 Hardware
  • Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…

    ... the paper area and the contention pattern.
    Fred Fred April 2009 Hardware
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