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  • Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…

    ... small fraction less without the contention. But I might still need ...
    joefish joefish May 2009 New game ideas
  • Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …

    ... is so delayed by the contention that it drifts further and ...
    joefish joefish May 2009 Development
  • Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …

    ... is so delayed by the contention that it drifts further and ...
    Dr BEEP Dr BEEP May 2009 Development
  • ZX Spectrum arcade machine[url]http://www.youtube.com/watch?gl=GB&v=Bo2FJ2ySC7A[/url] Anyone remember the Nintendo Playchoice 10 arcade machine? This was basically a 2 screen…

    ... and the raiders could have IR imaging showing the wereabouts of ...
    STeaM STeaM June 2009 Games
  • Project Natal?Project Natal (at: [url]http://www.xbox.com/en-US/live/projectnatal/[/url] [url]http://www.gametrailers.com/video/e3-09-project-natal/50013[/url] …

    ... ' claims to use pulses of IR light and precise timing of ...
    joefish joefish June 2009 Chit chat
  • 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.

    ... (0x02)
    High port contention 1... passed
    High port ... ... passed
    High port contention 1... passed
    High ... failed (0xff)
    High port contention 1... failed (0xfe)
    ... High port contention 2... failed (0xfe)
    ...
    rich_chandler rich_chandler June 2009 Emulators
  • The end of analogue radioWell, it seems that analogue radio will be more or less obsolete by 2015, the BBC has decided to cross over to digital transmission in 6 years. All …

    ... />
    When everybody in your contention block is watching at the ...
    dekh dekh June 2009 Chit chat
  • The end of analogue radioWell, it seems that analogue radio will be more or less obsolete by 2015, the BBC has decided to cross over to digital transmission in 6 years. All …

    ... />
    When everybody in your contention block is watching at the ...
    Winston Winston June 2009 Chit chat
  • 50p on your phone billThe UK government [I]really[/I] know how to put the 'S' into Stealth Tax: [URL="http://news.bbc.co.uk/1/hi/technology/8102756.stm"]http://news.bbc.c…

    ... great. Seemed to have no contention though it is/was rated ...
    dekh dekh June 2009 Chit chat
  • 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.

    ... final ones, including "High port contention 2". I need to keep ...
    Metalbrain Metalbrain June 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.

    ... .

    [quote]"High port contention 2". I need to keep ...
    Philip Kendall Philip Kendall June 2009 Emulators
  • Famous Spectrum hardware?If, hypothetically, someone were in the middle of writing a book chapter on third-party hardware for the spectrum, what companies and peripherals wou…

    How about the Cheetha RAT, IR joypad thingie?
    Also maybe the replacement keyboards like the SAGA ones.
    Finally the SLOW-MO :)
    Heatsink128 Heatsink128 June 2009 Sinclair Miscellaneous
  • Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…

    ... 2 due to the memory contention issue).[/QUOTE]

    No ...
    glancaster glancaster July 2009 Development
  • The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…

    ... each line, allowing for some contention. The Pentagon version takes exactly ... T-states per line, without contention.

    I'm not ...
    joefish joefish August 2009 Development
  • The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…

    ... 't ZXSpin 0.666 have contention accidently disabled? (I think that ...
    Metalbrain Metalbrain August 2009 Development
  • The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…

    Ah, good point. If memory contention is disabled, it'll do ...
    joefish joefish August 2009 Development
  • The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…

    ... mode, with the contention turned on. With the contention turned off, the ...
    joefish joefish August 2009 Development
  • Has any programmers recently pushed the spectrum to the limits?Hi there. Ive just discovered this great forum and I was brought up with the speccy 16,48 and then 128k. Im just wanting to know if there are any re…

    ... ; Hit here just as the contention-free period starts - start pushing ...
    AMW AMW August 2009 Development
  • I want to believe!Here we are Wossers, it?s a multiple choice poll, where you can share your spooky beliefs! Now, no flaming here, and no going on about which God is …

    ... black or shine under an IR source.

    Still, I ...
    joefish joefish August 2009 Chit chat
  • Should I buy a Sam Coupe?Hi folks I been interested with the Sam Coupe since Miles Gordon Technology released the SAM as the successor to the Spectrum. Are their any SAM us…

    ... ]

    Due to memory contention while the video is being ...
    Quazar Quazar August 2009 Chit chat
  • Should I buy a Sam Coupe?Hi folks I been interested with the Sam Coupe since Miles Gordon Technology released the SAM as the successor to the Spectrum. Are their any SAM us…

    ... =Quazar;376976]Due to memory contention while the video is being ...
    chev chev August 2009 Chit chat
  • 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…

    ... constraints (Z80 undocumented opcodes, memory contention, floating bus, fixed number of ...
    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…

    ... threw at it (floating bus, contention, whatever), then, to me, that ...
    csmith csmith August 2009 Development
  • Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…

    ... a lot more predictable) memory contention.
    AndyC AndyC September 2009 Chit chat
  • Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…

    ... a lot more predictable) memory contention.[/QUOTE]

    Didn't ...
    frobush frobush September 2009 Chit chat
  • Colour clash on the Commode64?Was there any? Every now and again, I see a screen shot like this... [img]http://www.lemon64.com/games/screenshots/full/j/jack_the_nipper_02.gif[/i…

    ... a lot more predictable) memory contention.[/QUOTE]
    Really? I never ...
    rich_chandler rich_chandler September 2009 Chit chat
  • Things wat they did have in my day!.I was talking at work today about things that were quite common when we were kids but arent realy around any more. My co worker mentioned how many ar…

    ... , somewhere. But then free-flying IR controlled helicopters are dirt cheap ...
    joefish joefish October 2009 Chit chat
  • Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …

    ... not suffer any kind of contention. A program run within the ...
    mcleod_ideafix mcleod_ideafix October 2009 Hardware
  • Some ever noticed that +2A/+3 halts Z80 using WAIT?I mean: Anyone ever noticed that the +2A/+3 halts the Z80 using WAIT? All documentation I've read about contention state that the ULA halts the Z80 …

    ... the BBC Micro worked without contention was interesting. The 6502, if ...
    Winston Winston October 2009 Hardware
  • Blimey, we thought security cameras were bad...Have you seen the news, or if you missed it read here: [url]http://boingboing.net/2008/10/24/what-the-tsas-new-bo.html[/url] Apart from the moral i…

    ... , those average speed cameras use IR illuminators at night to read ... when someone will make an IR opaque numberplate, so you can ...
    Winston Winston October 2009 Chit chat
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Latest Posts

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  • Goodbye Z80
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  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on April 22
  • Another Birthday! The Game Boy Is 35!
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  • I am currently watching.....
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  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on April 22
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on April 22
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

HitBox

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ir 234 292
contention 1.4K 2.4K

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