| MTC(4) | Device Drivers Manual (vax) | MTC(4) | 
mtc —
mtc0 at uba? csr 0174500
mscpbus* at mtc?
mtc driver is for UNIBUS tape controllers that use
  MSCP. Among these controllers are:
mtc communicates with the host through a packet
  protocol known as the Mass Storage Control Protocol (MSCP). Consult the file
  <mscp/mscp.h> for a detailed
  description of this protocol.
mtc driver appeared in NetBSD
  1.2.
| February 17, 2017 | NetBSD 9.4 |