3/9/2023 0 Comments Dios mios wii 4.3![]() It does this by listening to IRQs 11 and 15, with GPIOs configured to trigger an interrupt on the press of the power button on IRQ 11, it shuts down with the RSTB_CPU bit of HW_RESETS cleared, while the bit is set on IRQ 15. The main function of MIOS at this point is to handle the front buttons on the Wii pressing the power button at this point shuts down the GameCube game and launches boot2, which launches the System Menu to complete the shutdown. Once a GameCube game starts, MIOS does not do much, as direct access to GameCube hardware is now enabled. Neither BC nor MIOS reset the disc drive, as doing so would clear the buffer configuration. MIOS is responsible for reading and running apploaders, but not for configuring the streaming audio (DTK) buffer the System Menu's BS2 sets that up in state 11. It performs patching of some games when they load, presumably to enhance compatibility with problematic titles. MIOS contains a full copy of the GC IPL, slightly modified for the Wii this includes linking it with RVL_SDK instead of DOL_SDK. It has seen minimal updates in the Wii's lifetime. ![]() ![]() The same MIOS is used for all GameCube games and software. MIOS is a special version of IOS that runs when the Wii enters GameCube mode, specifically launched by boot2 if it detects the lowered clock speed set by BC (if syscall 55 returns 162).
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