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.pa 1
.he 'TTYN (III)'1/15/73'TTYN (III)'
.ti 0
NAME ttyn -- return name of current tty
.sp
.ti 0
SYNOPSIS jsr pc,ttyn
.sp
.ti 0
DESCRIPTION The routine hunts up the name of the
input tty attached to the process (one byte from the set
{012345678abc} at present) and returns it in r0.
.sp
"x" is returned if no genuine input tty is attached to the process.
.sp
.ti 0
FILES kept in /lib/liba.a
.sp
.ti 0
SEE ALSO fstat(II)
.sp
.ti 0
DIAGNOSTICS --
.sp
.ti 0
BUGS --
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