1TM(4)                      Kernel Interfaces Manual                      TM(4)
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NAME

6       tm - TM-11/TE-10 magtape interface
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SYNOPSIS

9       /sys/conf/SYSTEM:
10            # Setting AVIVTM configures the TM driver for the AVIV 800/1600/6250
11            # controller.  For more details, see /sys/pdpuba/tm.c.
12            NTM    tm_drives # TM11
13            AVIVTM YES       # AVIV 800/1600/6250 controller
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15       /etc/dtab:
16            #Name Unit# Addr   Vector Br Handler(s)      # Comments
17            tm    ?     172520 224    5  tmintr          # tm11 driver
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19       major device number(s):
20            raw: 7
21            block: 1
22       minor device encoding:
23            bits 0003 specify TS drive
24            bit  0004 specifies no-rewind operation
25            bits 0030 specify recording density:
26                 0000:   800BPI
27                 0010:  1600BPI (AVIVTM and some other controllers)
28                 0020:  6250BPI (AVIVTM only)
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DESCRIPTION

31       The tm-11/te-10 combination provides a standard tape drive interface as
32       described in mtio(4).  The standard DEC tm-11 operates only at 800 bpi.
33       Other  controllers  of  this type may also allow operation at 1600 bpi,
34       under software control or by switching manually.
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FILES

37       /dev/MAKEDEV        script to create special files
38       /dev/MAKEDEV.local  script to localize special files
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SEE ALSO

41       mt(1), tar(1), tp(1), mtio(4), ht(4), ts(4), mt(4),  dtab(5),  autocon‐
42       fig(8)
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DIAGNOSTICS

45       te%d:  no  write  ring.  An attempt was made to write on the tape drive
46       when no write ring was present; this message is written on the terminal
47       of the user who tried to access the tape.
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49       te%d:  not online.  An attempt was made to access the tape while it was
50       offline; this message is written on the terminal of the user who  tried
51       to access the tape.
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53       te%d:  can't  change density in mid-tape.  An attempt was made to write
54       on a tape at a different density than is already recorded on the  tape.
55       This message is written on the terminal of the user who tried to switch
56       the density.
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58       te%d: hard error bn%d er=%b.   A tape error occurred at block  bn;  the
59       tm  error  register  is  printed  in  octal  with the bits symbolically
60       decoded.  Any error is fatal on non-raw tape; when possible the  driver
61       will  have  retried  the  operation  which  failed several times before
62       reporting the error.
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64       te%d: lost interrupt.  A tape operation did not complete within a  rea‐
65       sonable  time,  most  likely because the tape was taken off-line during
66       rewind or lost vacuum.  The controller should, but does  not,  give  an
67       interrupt  in  these  cases.   The  device will be made available again
68       after this message, but any current open reference to the  device  will
69       return an error as the operation in progress aborts.
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BUGS

72       If  any non-data error is encountered on non-raw tape, it refuses to do
73       anything more until closed.
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773rd Berkeley Distribution      January 28, 1988                          TM(4)
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