SEQCTL
ahc_outb(ahc, SEQCTL, ahc_inb(ahc, SEQCTL) | STEP);
ahc_outb(ahc, SEQCTL, ahc_inb(ahc, SEQCTL) & ~STEP);
ahc_outb(ahc, SEQCTL, FASTMODE);
ahc->suspend_state.channel[1].seqctl = ahc_inb(ahc, SEQCTL);
ahc->suspend_state.channel[0].seqctl = ahc_inb(ahc, SEQCTL);
ahc_outb(ahc, SEQCTL, ahc->suspend_state.channel[1].seqctl);
ahc_outb(ahc, SEQCTL, ahc->suspend_state.channel[0].seqctl);
printf("SEQCTL == 0x%x\n", ahc_inb(ahc, SEQCTL));
ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS|FASTMODE|LOADRAM);
ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS|FASTMODE|LOADRAM);
ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS|FASTMODE);
ahc_seqctl_print(ahc_inb(ahc, SEQCTL), &cur_col, 50);
ahc_outb(ahc, SEQCTL, 0);
ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
ahc_outb(ahc, SEQCTL, PERRORDIS);
ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);