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Add definitions for the industry-standard DLT density codes.

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Obtained from:	Quantum DLT8000 manual
MFC after:	1 week
This commit is contained in:
Joerg Wunsch 2002-07-09 11:26:09 +00:00
parent 7abc408094
commit bd275d1aed
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=99653
2 changed files with 10 additions and 0 deletions
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6
usr.bin/mt/mt.1
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@ -266,6 +266,9 @@ Value Width Tracks Density Code Type Reference Note
0x16 12.7 (0.5) 48 394 (10,000) MFM C X3.193-1990 1
0x17 12.7 (0.5) 48 1,673 (42,500) MFM C X3B5/91-174 1
0x18 12.7 (0.5) 112 1,673 (42,500) MFM C X3B5/92-50 1
0x19 12.7 (0.5) 128 2,460 (62,500) RLL C DLTapeIII 6,7
0x1A 12.7 (0.5) 128 3,214 (81,633) RLL C DLTapeIV(20) 6,7
0x1B 12.7 (0.5) 208 3,383 (85,937) RLL C DLTapeIV(35) 6,7
0x1C 6.3 (0.25) 34 1,654 (42,000) MFM C QIC-385M 1,6
0x1D 6.3 (0.25) 32 1,512 (38,400) GCR C QIC-410M 1,6
0x1E 6.3 (0.25) 30 1,385 (36,000) GCR C QIC-1000C 1,6
@ -282,6 +285,7 @@ Value Width Tracks Density Code Type Reference Note
0x29 12.7 (0.5)
0x2A
0x2B 12.7 (0.5) 3 ? ? ? C X3.267 5
0x41 12.7 (0.5) 208 3,868 (98,250) RLL C DLTapeIV(40) 6,7
.Ed
.Bd -literal -offset 3n
Code Description Type Description
@ -302,6 +306,8 @@ NOTES
5. Helical scan.
6. This is not an American National Standard. The reference is based on
an industry standard definition of the media format.
7. DLT recording: serially recorded track pairs (DLTapeIII and
DLTapeIV(20)), or track quads (DLTapeIV(35) and DLTapeIV(40)).
.Ed
.Sh ENVIRONMENT
If the following environment variable exists, it is utilized by

4
usr.bin/mt/mt.c
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@ -438,6 +438,9 @@ struct densities {
{ 0x16, 394, 10000, "X3.193-1990" },
{ 0x17, 1673, 42500, "X3B5/91-174" },
{ 0x18, 1673, 42500, "X3B5/92-50" },
{ 0x19, 2460, 62500, "DLTapeIII" },
{ 0x1A, 3214, 81633, "DLTapeIV(20GB)" },
{ 0x1B, 3383, 85937, "DLTapeIV(35GB)" },
{ 0x1C, 1654, 42000, "QIC-385M" },
{ 0x1D, 1512, 38400, "QIC-410M" },
{ 0x1E, 1385, 36000, "QIC-1000C" },
@ -451,6 +454,7 @@ struct densities {
{ 0x26, 3816, 97000, "DDS-4" },
{ 0x27, 3056, 77611, "Mammoth" },
{ 0x28, 1491, 37871, "X3.224" },
{ 0x41, 3868, 98250, "DLTapeIV(40GB)" },
{ 0, 0, 0, NULL }
};