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authorjoerg <joerg@FreeBSD.org>2002-10-15 12:53:29 +0000
committerjoerg <joerg@FreeBSD.org>2002-10-15 12:53:29 +0000
commit00d15800f1559a723e52ed176f834ad2b9846502 (patch)
tree4dcf7924b30ac5b2496c918dda9ff3bfbf94d683 /usr.bin/mt
parenta3f9c69e038cbe454e9f7638bf9a66ea6da04e32 (diff)
downloadFreeBSD-src-00d15800f1559a723e52ed176f834ad2b9846502.zip
FreeBSD-src-00d15800f1559a723e52ed176f834ad2b9846502.tar.gz
Add information about the SDLT density codes.
Submitted by: "Stewart MacLund" <sundie@lunaticfringe.org> MFC after: 1 week
Diffstat (limited to 'usr.bin/mt')
-rw-r--r--usr.bin/mt/mt.15
-rw-r--r--usr.bin/mt/mt.c2
2 files changed, 7 insertions, 0 deletions
diff --git a/usr.bin/mt/mt.1 b/usr.bin/mt/mt.1
index b48a853..10da38b 100644
--- a/usr.bin/mt/mt.1
+++ b/usr.bin/mt/mt.1
@@ -286,6 +286,8 @@ Value Width Tracks Density Code Type Reference Note
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
+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
.Bd -literal -offset 3n
Code Description Type Description
@@ -297,6 +299,7 @@ IMFM Inverted modified frequency modulation
MFM Modified frequency modulation
DDS DAT data storage
RLL Run length limited
+PRML Partial Response Maximum Likelihood
.Ed
.Bd -literal -offset 3n
NOTES
@@ -308,6 +311,8 @@ NOTES
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)).
+8. Super DLT (SDLT) recording: 56 serially recorded logical tracks with
+ 8 physical tracks each.
.Ed
.Sh ENVIRONMENT
If the following environment variable exists, it is utilized by
diff --git a/usr.bin/mt/mt.c b/usr.bin/mt/mt.c
index df2cc6b..a320e97 100644
--- a/usr.bin/mt/mt.c
+++ b/usr.bin/mt/mt.c
@@ -455,6 +455,8 @@ struct densities {
{ 0x27, 3056, 77611, "Mammoth" },
{ 0x28, 1491, 37871, "X3.224" },
{ 0x41, 3868, 98250, "DLTapeIV(40GB)" },
+ { 0x48, 5236, 133000, "SDLTapeI(110)" },
+ { 0x49, 7598, 193000, "SDLTapeI(160)" },
{ 0, 0, 0, NULL }
};
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