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Add information about the SDLT density codes.

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Submitted by:	"Stewart MacLund" <sundie@lunaticfringe.org>
MFC after:	1 week
This commit is contained in:
Joerg Wunsch 2002-10-15 12:53:29 +00:00
parent 54a63f9f1c
commit 75e861d635
2 changed files with 7 additions and 0 deletions
usr.bin/mt
mt.1mt.c

5
usr.bin/mt/mt.1

@ -286,6 +286,8 @@ Value Width Tracks Density Code Type Reference Note
0x2A 0x2A
0x2B 12.7 (0.5) 3 ? ? ? C X3.267 5 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 0x41 12.7 (0.5) 208 3,868 (98,250) RLL C DLTapeIV(40) 6,7
0x48 12.7 (0.5) 448 5,236 (133,000) PRML C SDLTapeI(110) 6,8
0x49 12.7 (0.5) 448 7,598 (193,000) PRML C SDLTapeI(160) 6,8
.Ed .Ed
.Bd -literal -offset 3n .Bd -literal -offset 3n
Code Description Type Description Code Description Type Description
@ -297,6 +299,7 @@ IMFM Inverted modified frequency modulation
MFM Modified frequency modulation MFM Modified frequency modulation
DDS DAT data storage DDS DAT data storage
RLL Run length limited RLL Run length limited
PRML Partial Response Maximum Likelihood
.Ed .Ed
.Bd -literal -offset 3n .Bd -literal -offset 3n
NOTES NOTES
@ -308,6 +311,8 @@ NOTES
an industry standard definition of the media format. an industry standard definition of the media format.
7. DLT recording: serially recorded track pairs (DLTapeIII and 7. DLT recording: serially recorded track pairs (DLTapeIII and
DLTapeIV(20)), or track quads (DLTapeIV(35) and DLTapeIV(40)). DLTapeIV(20)), or track quads (DLTapeIV(35) and DLTapeIV(40)).
8. Super DLT (SDLT) recording: 56 serially recorded logical tracks with
8 physical tracks each.
.Ed .Ed
.Sh ENVIRONMENT .Sh ENVIRONMENT
If the following environment variable exists, it is utilized by If the following environment variable exists, it is utilized by

2
usr.bin/mt/mt.c

@ -455,6 +455,8 @@ struct densities {
{ 0x27, 3056, 77611, "Mammoth" }, { 0x27, 3056, 77611, "Mammoth" },
{ 0x28, 1491, 37871, "X3.224" }, { 0x28, 1491, 37871, "X3.224" },
{ 0x41, 3868, 98250, "DLTapeIV(40GB)" }, { 0x41, 3868, 98250, "DLTapeIV(40GB)" },
{ 0x48, 5236, 133000, "SDLTapeI(110)" },
{ 0x49, 7598, 193000, "SDLTapeI(160)" },
{ 0, 0, 0, NULL } { 0, 0, 0, NULL }
}; };