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6.1.8
Initialize Drive Parameters - 91H
Bit ->
7
Command (7)
C/D/H (6)
X
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
This command enables the host to set the number
of sectors per track and the number of heads per
cylinder.
Only
the
Card/Drive/Head registers are used by this
command.
6.1.9
Read Buffer - E4H
Bit ->
7
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
The Read Buffer command enables the host to
read the current contents of the CompactFlash
Memory Card's sector buffer. This command has
the same protocol as the Read Sector(s) command.
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION
CompactFlash Memory Card Product Manual
6
5
0
X
Sector
Count and
the
6
5
X
4
3
2
91H
Drive
Max Head (no. of heads-1)
X
X
X
Number of Sectors
X
Note:
SanDisk recommends NOT using this command
in any system because DOS determines the
offset to the Boot Record based on the number
of
heads
CompactFlash Memory Card is "Formatted" with
one head and sector per track value, the same
CompactFlash Card will not operate correctly
with DOS configured with another heads and
sectors per track value.
4
3
2
E4H
Drive
X
X
X
X
X
1
0
and sectors
per track.
1
0
X
If
a
65
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