src/libultra_boot_O2/__osSiDeviceBusy.c


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#include "global.h"

s32 __osSiDeviceBusy() {
    register u32 status;
    status = HW_REG(SI_STATUS_REG, u32);
    if (status & (SI_STATUS_DMA_BUSY | SI_STATUS_IO_READ_BUSY)) {
        return true;
    } else {
        return false;
    }
}