INT_MASK
outw(INT_MASK | CU_START, ioaddr + SCBCmd);
outw(INT_MASK | RX_START, ioaddr + SCBCmd);
outw(INT_MASK, ioaddr + SCBCmd);
outw(INT_MASK | RX_ADDR_LOAD, ioaddr + SCBCmd);
outw(INT_MASK | CU_STATSADDR, ioaddr + SCBCmd);
outw(INT_MASK | RX_START, ioaddr + SCBCmd);
outw(INT_MASK | RX_START, ioaddr + SCBCmd);
outw(INT_MASK | CU_CMD_BASE, ioaddr + SCBCmd);
outw(INT_MASK | CU_START, ioaddr + SCBCmd);
PUT16(ss, REG_INT_MASK, INT_MASK);
#define INT_ENAB (INT_MASK | INT_CMD)