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1.1 root 1: .\" Copyright (c) 1986 Regents of the University of California.
2: .\" All rights reserved. The Berkeley software License Agreement
3: .\" specifies the terms and conditions for redistribution.
4: .\"
5: .\" @(#)tmscp.4 6.1 (Berkeley) 6/4/86
6: .\"
7: .TH TMSCP 4 "June 4, 1986"
8: .UC 6
9: .SH NAME
10: tmscp \- DEC TMSCP magtape interface
11: .SH SYNOPSIS
12: .B "controller tmscp0 at uba? csr 0174500 vector tmscpintr"
13: .br
14: .B "tape tms0 at tmscp0 drive 0"
15: .SH DESCRIPTION
16: Tape controllers compatible with the DEC
17: Tape Mass Storage Control Protocol (TMSCP) architecture
18: such as the TU81 and the TK50
19: provide a standard tape drive interface
20: as described in
21: .IR mtio (4).
22: The controller communicates with the host through a packet
23: oriented protocol.
24: Consult the file
25: .IR < vax/tmscp.h >
26: for a detailed
27: description of this protocol.
28: .SH DIAGNOSTICS
29: .BR "tmscp controller failed to init" .
30: The controller initialization procedure failed.
31: This probably indicates a hardware problem.
32: .PP
33: .BR "tmscp%d: sa 0%o, state %d" .
34: (Additional status information given after a hard I/O error.)
35: The values of the controller status register and the internal
36: driver state are printed.
37: .PP
38: .BR "tmscp%d: random interrupt ignored" .
39: An unexpected interrupt was received (e.g. when no i/o was
40: pending). The interrupt is ignored.
41: .PP
42: .BR "tmscp%d: interrupt in unknown state %d ignored" .
43: An interrupt was received when the driver was in an unknown
44: internal state. Indicates a hardware problem or a driver bug.
45: .PP
46: .BR "tmscp%d: fatal error (0%o)" .
47: The controller detected a ``fatal error'' in the status returned
48: to the host. The contents of the status register are displayed.
49: .PP
50: .BR OFFLINE .
51: (Additional status information given after a hard I/O error.)
52: A hard I/O error occurred because the drive was not on-line.
53: .PP
54: The following errors are interpretations of TMSCP error messages
55: returned by the controller to the host.
56: Each is preceded by either
57: .B "tmscp%d: hard error"
58: or
59: .BR "tmscp%d: soft error" .
60: .PP
61: .BR "controller error, event 0%o" .
62: .PP
63: .BR "host memory access error, event 0%o, addr 0%o" .
64: .PP
65: .BR "tape transfer error, unit %d, grp 0x%x, event 0%o" .
66: .PP
67: .BR "STI error, unit %d, event 0%o" .
68: .PP
69: .BR "STI Drive Error Log, unit %d, event 0%o" .
70: .PP
71: .BR "STI Formatter Error Log, unit %d, event 0%o" .
72: .PP
73: .BR "unknown error, unit %d, format 0%o, event 0%o" .
74: .SH "SEE ALSO"
75: mt(1), tar(1), tp(1), mtio(4), tm(4), ts(4), ut(4), dmesg(8)
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