SEQADDR0
ahc_inw(ahc, SEQADDR0),
ahc_inb(ahc, SEQADDR0)
seqaddr = ahc_inb(ahc, SEQADDR0)
ahc_outb(ahc, SEQADDR0, 0);
ahc_inb(ahc, SEQADDR0) |
ahc_outb(ahc, SEQADDR0, 0);
ahc_outb(ahc, SEQADDR0, 0);
ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));