BSU
#define HCR_BSU __HCR(BSU)
WREG32(CG_BSP, BSP(p) | BSU(u));
pi->dsp = BSP(pi->bsp) | BSU(pi->bsu);
pi->psp = BSP(pi->pbsp) | BSU(pi->pbsu);
pi->dsp = BSP(pi->bsp) | BSU(pi->bsu);
pi->psp = BSP(pi->pbsp) | BSU(pi->pbsu);
pi->dsp = BSP(pi->bsp) | BSU(pi->bsu);
pi->psp = BSP(pi->pbsp) | BSU(pi->pbsu);