SCSIRATE
#define SETRATE(RATE) SETPORT(SCSIRATE,(RATE) & 0x7f)
scsirate = ahc_inb(ahc, SCSIRATE);
ahc_outb(ahc, SCSIRATE, scsirate);
ahc_outb(ahc, SCSIRATE, scsirate);
ahc_scsirate_print(ahc_inb(ahc, SCSIRATE), &cur_col, 50);