Lines Matching refs:dx
28 movw $SIO_PRT+0x3,%dx # Data format reg
30 outb %al,(%dx) # and DLAB
33 outw %ax,(%dx) # BPS
34 movw $SIO_PRT+0x3,%dx # Data format reg
36 outb %al,(%dx) # DLAB
39 outb %al,(%dx) # DTR
56 movw $SIO_PRT+0x5,%dx # Line status reg
59 sio_putc.1: inb (%dx),%al # Transmitter
65 outb %al,(%dx) # Write character
73 inb (%dx),%al # Read character
78 sio_ischar: movw $SIO_PRT+0x5,%dx # Line status register
80 inb (%dx),%al # Received data