It seems as if the graphic performance is not a bottleneck for the Raspberry anymore. The graphic output has a much smaller footprint on the Pi 4 than expected. This mean a tremendous increase in performance and makes it possible to run the MAME emulation on that device for the first time. To my surprise, the Raspberry Pi 4 managed to run the TI-99/4A emulation in full speed. I believe that the Raspberry Pi3 B+ was not running by optimum conditions, and there may be some tricks to get a better performance. This table shows the performance with graphic output. These values are independent of the graphic performance of the device. Raw bench performanceĪs above, the plain emulation performance without graphic output is considered. Note that from MAME 0.254 on, Raspberry Pi OS is mandatory as underlying operating system. The entries without width specification refer to the Raspbian OS (32 bit). The entries suffixed with "32bit" and "64bit" refer to the Raspberry Pi OS installation (32 bit or 64 bit) as of July 2023. The TI-99 family is emulated in high precision, which requires a lot of performance. You may have probably heard about MAME emulations running decently on the Raspberry, but the performance of MAME largely depends on the emulated system. Before Pi 4, the Raspberry was plainly unusable for the TI-99 emulation in MAME. It may be better or worse for your specific card. However, the value definitely depends on the performance of your graphic card (2D performance). This is most interesting to see whether you can expect a good emulation experience without lagging, chopped sounds, or unrealistic slow execution. In this table, performance data has been recorded from test runs with graphic output. For example, if we let the Geneve boot during the test, the performance drops from 483% to 416%. Hence, these values are independent of the graphic performance of your system.Įmulated disk operations also cause a high performance impact. This is because the graphic output means a considerable load for the emulation see the table in the next section. It is not sufficient to get a 100% benchmark value in this test. If you get a 200% value this means that the emulation runs at twice the speed as the real system. In that case, the emulation is run without time synchronization, at maximum speed. In this table, performance data has been recorded from bare benchmark runs without graphic output. As shown, the TI-99 emulations in MAME run satisfactorily on platforms after 2010. The following table comprises PC platforms like laptops or desktops. One may also say that the numbers say how much work it has managed to do when the real system did 100%. Only when you have a 100% result, the emulation runs at the precise speed otherwise the running time is stretched. The percentages show how well the emulator managed to keep pace with the real system they indicate the number of emulated seconds in relation to the real time seconds. Here are some tests that show you what you can expect. You might wonder why a PC with gigahertz CPU may run into trouble when emulating an 80ies computer with 3 Megahertz clock, but the point is that MAME emulates the electrical circuits at a fairly precise level, and while in your real system, lots of things may happen in parallel, this is not the case in emulation. To run MAME, and in particular the TI emulations, your host (PC, Laptop) must offer a minimum performance. We take videogame preservation seriously and want to ensure you can run your originally bought content on modern day PCs.From time to time, I run some benchmarks on various machines for MAME, to be able to give some advice on minimum hardware requirements. In addition to this, you will soon be able to run original game discs (CDs) from RetroArch. Settings are also unified so configuration is done once and for all. While it can do many things besides this, it is most widely known for enabling you to run classic games on a wide range of computers and consoles through a slick graphical interface. RetroArch is an open source and cross platform frontend/framework for emulators, game engines, video games, media players and other applications.
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