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18
td0notes.txt
18
td0notes.txt
@@ -85,7 +85,7 @@
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4.3 Year (1 byte) 5
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4.4 Month (1 byte) 5
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4.5 Day (1 byte) 5
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4.6 Hour, Minite, Second (1 byte each) 5
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4.6 Hour, Minute, Second (1 byte each) 5
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4.7 Comment data block (variable size) 5
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5. Track Header 6
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@@ -119,10 +119,10 @@
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Teledisk is a program which reads non-PC format diskettes into image
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files for archival and can later recreate a copy of the original disk
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from the image file. Once popular for archival of classic computer
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software, Teledisk has been withdrawn from the market by it's
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software, Teledisk has been withdrawn from the market by its
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manufacturer and is no longer legally available. This presents a
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problem for those people who have data archived with Teledisk,
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because the file format is proprietary and not documented rendering
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because the file format is proprietary and not documented, rendering
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the data useless without the program.
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In my development of ImageDisk (a replacement for Teledisk), I have
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@@ -297,7 +297,7 @@
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4. Comment Header / Data block
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The comment block encodes an ASCII comment as well as the creation
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date. It's presence is indicated by the high bit of the "Stepping"
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date. Its presence is indicated by the high bit of the "Stepping"
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field in the image header being set.
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When present, it occurs immediately after the Image header in the
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@@ -309,7 +309,7 @@
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Month (1 byte)
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Day (1 byte)
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Hour (1 byte)
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Minite (1 byte)
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Minute (1 byte)
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Second (1 byte)
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Following the comment header are comment line records, consisting of
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@@ -347,7 +347,7 @@
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Gives the day (of the month) the image was created using a range
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of 1-31.
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4.6 Hour, Minite, Second (1 byte each)
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4.6 Hour, Minute, Second (1 byte each)
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Gives the time of day the image was created using 24-hour time.
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@@ -389,7 +389,7 @@
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5.3 Side/Head number (1 byte)
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This field encodes the disk side (0 or 1) that this track occurs
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on in it's lower bit.
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on in its lower bit.
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The high bit of this field is used to indicate the track was
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recorded in single-density. This allows mixed-density disks to be
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@@ -459,7 +459,7 @@
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or 1, and are not necessarily an unbroken series of numbers. Some
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formats encode seemingly arbitrary sector numbers.
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Teledisk sometimes creates bogus sectors headers to describe data
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Teledisk sometimes creates bogus sector headers to describe data
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that is not in a properly formatted sector. These extra sectors
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appear to be created with sector numbers begining at 100.
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Teledisk .TD0 notes Page: 8
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@@ -483,7 +483,7 @@
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6.5 Flags
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This is a bit field indicating characteristics that Teledisk noted
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about the sector when it was recorded. The field contain the
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about the sector when it was recorded. The field contains the
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logical OR of the following byte values:
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01 = Sector was duplicated within a track
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