DC_ISR
isr = CSR_READ_4(sc, DC_ISR);
r = CSR_READ_4(sc, DC_ISR);
isr = CSR_READ_4(sc, DC_ISR);
status = CSR_READ_4(sc, DC_ISR);
CSR_WRITE_4(sc, DC_ISR, status);
if ( (CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0)
if (CSR_READ_4(sc, DC_ISR) & DC_INTRS)
while(((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) &&
CSR_WRITE_4(sc, DC_ISR, status);
CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF);
reg = CSR_READ_4(dc_sc, DC_ISR);