Xenon II CDTV 68000 vs 68010

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  • เผยแพร่เมื่อ 22 ก.ค. 2023
  • This is a CDTV running the game Xenon II: Megablast on a 68000 CPU and a 68010 CPU to show the large performance difference a 68010 can make to Bitmap Brothers games.
    The 68010 is literally a drop-in replacement that runs at the same clock speed as the 68000, it has a couple of extra features, the main one being a "Loop mode" which is an optimisation of tight loops. It is said this only provides an up to 10% performance improvement, but in some situations, it is a lot more.
    Note that I'm not a gamer, I'm not brilliant at this game and I was playing through the recording monitor with probably 1/4 second lag :)
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ความคิดเห็น • 9

  • @is2scooby
    @is2scooby 10 หลายเดือนก่อน +7

    Noticeably smoother.

    • @o_guguito
      @o_guguito 10 หลายเดือนก่อน +1

      ...or just faster?

  • @rabautios
    @rabautios 6 หลายเดือนก่อน +1

    Same with Interceptor e.g. when rolling

  • @MartinDurik
    @MartinDurik 10 หลายเดือนก่อน +2

    I am sorry, I do not see it somehow, maybe I am just blind

    • @linuxjedivideo
      @linuxjedivideo  10 หลายเดือนก่อน +2

      You can sort of see in the intro that the 68000 gets a few frames behind (these were frame synched at the beginning of the video).
      But more importantly, in game Xenon II starts to slow the whole game down when there are lots of sprites on the screen, this doesn't happen with the 68010. This section of the first level shows it quite well due to the snake like enemies that use many sprites.

    • @davidv776
      @davidv776 10 หลายเดือนก่อน +1

      @@linuxjedivideo There's an small improvement for what i can see. However, the overall performance boost for the 010 was around a 9% due the cache inclusion. I'm not 100% sure about this statement though.

    • @MartinDurik
      @MartinDurik 10 หลายเดือนก่อน +1

      @@linuxjedivideo Oh, maybe longer videou would be better to see or notice the difference. I was playing Xenon on PI4 as set on A1200 performance, but I did not see any significant speedup.

    • @linuxjedivideo
      @linuxjedivideo  10 หลายเดือนก่อน +1

      @@MartinDurik the A1200 is about 2x faster than the CDTV, so it should run quite smoothly on that. When you are playing it makes a big difference. Main reason for a short video is I just didn't have time to capture a long one and I was asked about it. I'm sure many can reproduce this with their hardware.

    • @linuxjedivideo
      @linuxjedivideo  10 หลายเดือนก่อน +1

      @@davidv776 the performance boost due to the cache was about 50%, but only in code that could be cached, which are single instruction loops, like the kind to move memory around. These are used a lot in CPU heavy games such as the Bitmap Brothers games, due to Atari ST being targeted as the common denominator.
      On average it works out to a 9-10% performance increase in benchmarks, but benchmarks don't show the whole story.