V3/usr/man/man8/20boot.8

Find at most related files.
including files from this version of Unix. 
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NAME		20boot -- install new 11/20 system
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SYNOPSIS	20boot______ [ x_ ]
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DESCRIPTION	This
shell command file copies the current version
of the 11/20 program used to run the VT01 display
onto the /dev/vt0 file.

If no argument is given, the 11/20 program should be executing
but idle; the 11/20 program is sent preceded by a
"reboot" command.
If an argument is given, the 11/20 should
have been restarted at its ROM location
777300.
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FILES		/dev/vt0;
.br
/sys/mdec/20.o (11/20 program)
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SEE ALSO	vt0 (IV)
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DIAGNOSTICS	--