*     Base + 0x00 IRQ Status
  *     Base + 0x01 IRQ control
  *     Base + 0x02 Chipset control
+ *     Base + 0x03 Unknown
  *     Base + 0x04 VDMA and reset control + wait bits
  *     Base + 0x08 BMIMBA
  *     Base + 0x0C DMA Length
        ata_std_ports(&ap->ioaddr);
 
        iowrite8(0x05, base + 0x01);    /* Enable interrupt lines */
-       iowrite8(0xB3, base + 0x02);    /* Burst, ?? setup */
-       iowrite8(0x00, base + 0x04);    /* WAIT0 ? */
+       iowrite8(0xBE, base + 0x02);    /* Burst, ?? setup */
+       iowrite8(0x01, base + 0x03);    /* Unknown */
+       iowrite8(0x20, base + 0x04);    /* WAIT0 */
+       iowrite8(0x8f, base + 0x05);    /* Unknown */
+       iowrite8(0xa4, base + 0x1c);    /* Unknown */
+       iowrite8(0x83, base + 0x1d);    /* BMDMA control: WAIT0 */
        /* FIXME: Should we disable them at remove ? */
        return ata_host_activate(host, dev->irq, ata_interrupt,
                                 IRQF_SHARED, &ninja32_sht);