40 #define write_ind(num, val, ap, dp)	do { \  argument
41 	outb((num), (ap)); outb((val), (dp)); \
43 #define read_ind(num, var, ap, dp)	do { \  argument
44 	outb((num), (ap)); var = inb((dp)); \
48 #define write_xr(num, val)	write_ind(num, val, 0x3d6, 0x3d7)  argument
49 #define read_xr(num, var)	read_ind(num, var, 0x3d6, 0x3d7)  argument
51 #define write_fr(num, val)	write_ind(num, val, 0x3d0, 0x3d1)  argument
52 #define read_fr(num, var)	read_ind(num, var, 0x3d0, 0x3d1)  argument
54 #define write_cr(num, val)	write_ind(num, val, 0x3d4, 0x3d5)  argument
55 #define read_cr(num, var)	read_ind(num, var, 0x3d4, 0x3d5)  argument
57 #define write_gr(num, val)	write_ind(num, val, 0x3ce, 0x3cf)  argument
58 #define read_gr(num, var)	read_ind(num, var, 0x3ce, 0x3cf)  argument
60 #define write_sr(num, val)	write_ind(num, val, 0x3c4, 0x3c5)  argument
61 #define read_sr(num, var)	read_ind(num, var, 0x3c4, 0x3c5)  argument
63 #define write_ar(num, val)	do { \  argument
64 	inb(0x3da); write_ind(num, val, 0x3c0, 0x3c0); \
66 #define read_ar(num, var)	do { \  argument
67 	inb(0x3da); read_ind(num, var, 0x3c0, 0x3c1); \