Type III C lass A Program

TAPE PROCEDURES
A facility is available for attaching magnetic tapes to a
virtual machine. The selection of a physical tape drive is
made by the CP operator, and the virtual device address is
chosen by the terminal user. The eMS TAPE command requires
that the tape have a,ddress 181. The TAPEIO function and the
TPCOPY command associate the device names TAPl and TAP2 with
the device addresses 180 and 181, respectively.
To have a tape attached to your
message to the CP operator asking
you as a specified device address.
and ready for use. the system
message
DEVICE xxx ATTACHED
virtual machine, send a
him to mount a tape for
When the tape is mounted
automatically types the
Since there are only a limited number of tape drives
available for use by CMS users# a user should not keep a
tape attached to his machine any longer than he is using it.
To release a tape from a virtual machine, enter the CP
environment and type the CP console function
DETACH devadd
When a user logs out of CP, all attached devices are
automatically detached.
512 Tape Procedures