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    Dreamcast games slow

    Emulator Arcade/PC/Console
    dreamcast slow
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    • bernardoortega
      bernardoortega last edited by

      I have tried two or three games. One of them, which is virtual tenis 1 or 2 is slow. I have also tried all modes of overclock and is even worst. I have the PI 3 B+

      Thoughts?

      Regards

      1 Reply Last reply Reply Quote 0
      • acris
        acris last edited by

        HELLO @bernardoortega
        https://docs.google.com/spreadsheets/d/1Ep2Lm_nhpXtLp-iZibFXiCZUB7csqWXFzqj8IvvGOJk/edit#gid=1806295408

        Virtua Tennis - Sega Professional Tennis (Europe) (En,Fr,De,Es	Has Issues	(VERSION USA replay pas visible) RPI3@1300MHZ CDI and gdi
        Virtua Tennis 2 - Sega Professional Tennis (Europe) (En,Fr,De,Es)	Has Issues	Fonctionne plutôt bien avec QQ bug graphique niveau 2D, rpi3 overclock @1350mhz mais au bout de quelques minutes retour dans recalbox
        
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        • bernardoortega
          bernardoortega last edited by

          i have also tried with the USA version but the issues are the same. Slow, even more when using overclock.

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          • David Frété
            David Frété last edited by

            Some people seems to make it working fine, I don't know how.
            To me, using gdi, Virtua Tennis 1 and 2 have slowdows that makes it unplayable.

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            • Shinta
              Shinta last edited by

              Hello,
              Simple overclock of the cpu is not enough to handle the dreamcast.
              With some custom overclock settings I managed to run Virtua Tennis 2 around 90-95% of its full speed with very few minor glitchs. So the game is playable and enjoyable.
              A lot of games are close to work at full speed, if only the pi3 have had a bit more cpu speed.

              Every pi are different, so if it crashes or displays a black screen, you must lower some values (see the range in my config.txt below).

              WARNING: you REALLY need a good cooling setup (fan + heatsinks) if you don't want to grill your pi.
              My settings works for me and my pi3 can stay on for hours, BUT I can not be held responsible if your pi goes down.

              In config.txt of the sdcard (plug it in your computer), here are my settings:


              kernel=zImage
              #old extrem default values
              #force_turbo=0
              #arm_freq=1375
              #core_freq=500
              #sdram_freq=575
              #over_voltage=4
              #over_voltage_sdram_p=6
              #over_voltage_sdram_i=4
              #over_voltage_sdram_c=4
              #gpu_freq=500
              #sdram_schmoo=0x02000020

              #my custom overclock: cpu / gpu (core & gpu freq should be equals) / sdram / voltage
              #arm_freq (1400-1450)
              arm_freq=1425

              #core_freq & gpu_freq (500-575)
              core_freq=550
              gpu_freq=550
              #v3d_freq (520-530) or more ? under 500 is not enough for the dreamcast
              v3d_freq=530

              h264_freq=333
              gpu_mem=256

              #sdram_freq (500-580)
              sdram_freq=575
              sdram_schmoo=0x02000020

              #over_voltage (4-6)
              over_voltage=6
              force_turbo=0
              over_voltage_sdram_p=6
              over_voltage_sdram_i=4
              over_voltage_sdram_c=4


              More significant values are cpu, core_freq and v3d_freq.

              Hope this help.
              If anyone has a more powerful & stable setup, please share 🙂

              1 Reply Last reply Reply Quote 1
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