| RDCIDE(4) | Device Drivers Manual | RDCIDE(4) | 
rdcide —
rdcide* at pci? dev ? function ? flags 0x0000
rdcide driver supports the RDC IDE controller as
  found in the vortex86 and PMX-1000 system on chip, and provides the interface
  with the hardware for the ata(4)
  driver.
The 0x0002 flag forces the rdcide driver
    to disable DMA on chipsets for which DMA would normally be enabled. This can
    be used as a debugging aid, or to work around problems where the IDE
    controller is wired up to the system incorrectly.
| February 17, 2017 | NetBSD 9.4 |