BSD 4_1c_2 development

Work on file usr/man/man4/ts.4v

Synthesized-from: CSRG/cd1/4.1c.2

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+.TH TS 4V "10 May 1981"
+.UC 4
+.SH NAME
+ts \- TS-11 magtape interface
+.SH SYNOPSIS
+.B "controller zs0 at uba? csr 0172520 vector tsintr"
+.br
+.B "tape ts0 at zs0 drive 0"
+.SH DESCRIPTION
+The ts-11 combination provides a standard tape drive
+interface as described in
+.IR mt (4).
+The ts-11 operates only at 1600 bpi, and only one transport
+is possible per controller.
+.SH "SEE ALSO"
+mt(1),
+tar(1),
+tp(1),
+mt(4),
+ht(4V),
+tm(4V),
+mt(4V),
+ut(4V)
+.SH DIAGNOSTICS
+\fBts%d: no write ring\fR.  An attempt was made to write on the tape drive
+when no write ring was present; this message is written on the terminal of
+the user who tried to access the tape.
+.PP
+\fBts%d: not online\fR.  An attempt was made to access the tape while it
+was offline; this message is written on the terminal of the user
+who tried to access the tape.
+.PP
+\fBts%d: hard error bn%d xs0=%b\fR.  A hard error occurred on the tape
+at block \fIbn\fR; status register 0 is printed in octal and symbolically
+decoded as bits.
+.SH BUGS
+If any non-data error is encountered on non-raw tape, it refuses to do anything
+more until closed.
+.PP
+The device lives at the same address as a tm-11
+.IR tm (4);
+as it is very difficult to get this device to interrupt, a generic
+system assumes that a ts is present whenever no tm-11 exists but
+the csr responds and a ts-11 is configured.
+This does no harm as long as a non-existant ts-11 is not accessed.
+.PP
+The system should remember which controlling terminal has the tape drive
+open and write error messages to that terminal rather than on the console.