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  • What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…

    311 lines of 228 TStates. Same as 128 model, with ...
    csmith csmith November 2011 Hardware
  • What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…

    ... ;583148]311 lines of 228 TStates. Same as 128 model, with ...
    mcleod_ideafix mcleod_ideafix November 2011 Hardware
  • Too few light gun games available? Any ideas for a decent shooter game?Terminator 2: The Arcade Game ported from the original GameBoy would be an excellent addition to the Spectrum's light gun collection. What shooter d…

    ... is that you need a 50Hz CRT for it to work ...
    sack sack December 2011 New game ideas
  • Too few light gun games available? Any ideas for a decent shooter game?Terminator 2: The Arcade Game ported from the original GameBoy would be an excellent addition to the Spectrum's light gun collection. What shooter d…

    ... is that you need a 50Hz CRT for it to work ...
    jonathan jonathan December 2011 New game ideas
  • UK computers in the USIs there any problem running UK computers in the US? I plan on using a step down transformer but will the 50hz to 60hz change cause a problem? I pla…

    ... will of course need a 50Hz capable TV.... and you should ...
    Spirantho Spirantho December 2011 Hardware
  • UK computers in the USIs there any problem running UK computers in the US? I plan on using a step down transformer but will the 50hz to 60hz change cause a problem? I pla…

    ... need a TV that supports 50hz signals. However you should note ...
    guesser guesser December 2011 Hardware
  • Interesting finding. How to connect TV out?Hello. I was passing in the street, and repeired in a open plastic bag clearly abandoned. So, inside it there was: a CD, a ZX Spectrum 128k+2 and i…

    ... output is a 625 line 50Hz video signal. A PAL colour ...
    guesser guesser December 2011 Sinclair Miscellaneous
  • Anyone heard about the Chameleon before?Commodore haters: please skip this topic, allthough it's definately Speccy related! ;) [url]http://www.syntiac.com/chameleon.html[/url] Someone mad…

    ... in 60Hz VGA or even 50Hz PAL RGB

    oh ...
    Zetr0 Zetr0 December 2011 Hardware
  • What spectrum?I am going to have a gent send me some Spectrum hardware in the future. Me being a american and knowing nothing of the sort, what would be the best o…

    ... /> All the machines output a 50hz, 625 line, PAL signal. Modulated ... TTL RGB + BRIGHT 625 line 50Hz output on their RGB socket ... an Analog RGB 625 line 50Hz output on theirs.

    guesser guesser December 2011 Hardware
  • Pac-Man EmulatorMy Pac-Man Emulator for the Spectrum +2A/+3 is now available for download from: [url]http://simonowen.com/spectrum/pacemuzx/[/url] You'll need to su…

    ... ]
    You get the extra 50Hz smoothness on the real thing ...
    obo obo December 2011 Brand new software
  • Pac-Man EmulatorMy Pac-Man Emulator for the Spectrum +2A/+3 is now available for download from: [url]http://simonowen.com/spectrum/pacemuzx/[/url] You'll need to su…

    ... />
    You get the extra 50Hz smoothness on the real thing ...
    Ivanzx Ivanzx December 2011 Brand new software
  • What spectrum?I am going to have a gent send me some Spectrum hardware in the future. Me being a american and knowing nothing of the sort, what would be the best o…

    ... TTL RGB + BRIGHT 625 line 50Hz output on their RGB socket ... an Analog RGB 625 line 50Hz output on theirs.

    ozw1z5rd ozw1z5rd December 2011 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…

    ... problem is that Chile uses 50Hz and we use 60. That ...
    zxbruno zxbruno December 2011 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…

    ... problem is that Chile uses 50Hz and we use 60[/QUOTE ... ? I think that the only 50Hz part of the Chilean Speccy ... the power supply of 220V/50Hz? I guess you just needed ...
    Fred Fred December 2011 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…

    ... misleading but there are two 50Hz figures that are relevant.
    50Hz from the mains supply to ... takes Chile's standard 220V/50Hz from the mains power supply ... TS2068 from the Australian 240V/50Hz mains supply.

    Once ...
    Fred Fred December 2011 Hardware
  • ahh..sooo close :) Spec128k+ RGB on LCD monitor helpHello, Was trying out RGB on my 128k+ and a Samsung Syncmaster 204 lcd monitor. Tried this monitor with a Genesis/Megadrive and a SNES and works real…

    ... getting:
    15.6KHz
    50Hz
    NN (I believe both ...
    thomas3120 thomas3120 January 2012 Hardware
  • ahh..sooo close :) Spec128k+ RGB on LCD monitor helpHello, Was trying out RGB on my 128k+ and a Samsung Syncmaster 204 lcd monitor. Tried this monitor with a Genesis/Megadrive and a SNES and works real…

    ... to display a 312 line 50hz image so you need to ...
    guesser guesser January 2012 Hardware
  • Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …

    ... that will be about 16 tstates per byte.
    I calculated ... go down to about 13 tstates.
    That's all that ...
    Ralf Ralf January 2012 Development
  • Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …

    ... you start to think about tstates,interrupts, shadow screens, preshifting and ...
    Ralf Ralf January 2012 Development
  • Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…

    ... hexadecimal numbers
    - to count tstates
    - to mess with stack ...
    Ralf Ralf January 2012 Development
  • 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 128k+, would it be 50Hz? I hooked up my 128k ...
    thomas3120 thomas3120 January 2012 Hardware
  • Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…

    ... hexadecimal numbers
    - to count tstates
    - to mess with stack ...
    Turrican Turrican January 2012 Development
  • 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…

    ... 311 lines to give the 50Hz vertical sync frequency.

    csmith csmith January 2012 Hardware
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... takes (more or less) 400 tstates for each line.
    I ... with LDI it takes 32 tstates. Pushing it takes 11 but ...
    climacus climacus January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... with LDI it takes 32 tstates. Pushing it takes 11 but ...
    obo obo January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... you have to calculate the tstates that it takes, haven?t ...
    climacus climacus January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... you have to calculate the tstates that it takes, haven?t ...
    obo obo January 2012 Sinclair Miscellaneous
  • How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…

    ... 't just release on the 50Hz timing pulse.

    When ...
    joefish joefish January 2012 Development
  • Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…

    ... and fast movement. But at 50Hz the entire width of the ...
    joefish joefish January 2012 Development
  • Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…

    ... and fast movement. But at 50Hz the entire width of the ... background and sprites but the 50Hz scrolling of the ground helps ... of the play area at 50Hz but the 'interactive' area at ...
    kphair kphair January 2012 Development
<1…19202122232425…34>

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