Specifications
Number
of physical sectors per track
Mininum
of 1
Maximun
of
48
ENTER
-
The
physical sector
is
the
lXlit
of data
read
or written
by
the floppy disc controller.
The
following table
shows
the estimated
by
ted per track available:
---R-e-co-r-d-i-ng-m"-e-th-od-"-------8-i-n-ch--5-.-2'-5-i-n-c-h-1
;;;;:;;;==---
====----===----=====---...:---====
Single Density
(FM)
Double
Density
(MFM)
Skew
factor
Minimum
of 1
ENTER
-
Gap
III
Size
Minimum
of 4
BYTES
Maxinum
of
100
BYTES
ENTER
-
5208
3125
------
10416
6250
The
gap
size is the
number
of bytes
between
the
end
of the data
field
and
the
ID
mark.
Its
purpose
is
to act
as
a "safe
zone"
to allow for uncertainty
in
the position of the end of the
data
field.
Block
size
1.
1024
bytes
2.
2048
bytes
3.
4096
bytes
4.
8192
bytes
5.
16384
bytes
ENTER
-
Number
of directory entries
Minimum
of
64
Maximum
of
4096
ENTER
-
Total
number
of
tracks
ENTER
-
This is the
total
number
of
logical tracks.
If
a
double
sided 8
inch
format
is
used
and
there
are
77
tracks per side then the response to
this
query
would
be
154.
Number
of reserved tracks
ENTER
-
~'"
The
reserved
tracks
are tho e
that
are
set
aside
for
the
operating
system.
The
Megatel
distribution
diskettes
use
reserved tracks for 8
inch
and
4 reserved tracks for
5.25
inch.
The
Megatel
operating syste requires
about
150
sectors at
128
bytes per sector.
Megatel
Computer
Technologies Toronto,
Canada
Page
S/W-17