| ASC(4) | Device Drivers Manual (vax) | ASC(4) | 
asc —
asc* at vsbus? csr 0x200c0080 (VS-4000/60 or VLC)
asc* at vsbus? csr 0x25000080 (VS-4000/9x)
asc* at tc? (Not yet supported)
scsibus* at asc?
asc driver provides support for the NCR 53c94-based
  SCSI host adapter on the VAXstation 4000 series, and for the PMAZ-AA and
  related TURBOchannel SCSI adapter option boards (also on the VAXstation 4000
  series models which include support for the TURBOchannel adapter).
asc driver supports the following
  flags for use in
  config(1) files:
“Target” is synonymous with SCSI ID number.
Note that SCSI tape drives should be allowed to perform disconnect/reselect or performance will suffer.
asc driver first appeared in NetBSD
  1.5.
| February 17, 2017 | NetBSD 10.1 |