DCR_UIC_TR
mtdcr(DCR_UIC1_BASE + DCR_UIC_TR,
mfdcr(DCR_UIC1_BASE + DCR_UIC_TR) & ~0x80000000);
mtdcr(DCR_UIC3_BASE + DCR_UIC_TR,
mfdcr(DCR_UIC3_BASE + DCR_UIC_TR) & ~0x000ff000);
(unsigned int)mfdcr((base) + DCR_UIC_TR))