Adaptec ACB-5500 User Manual page 113

51/4" winchester disk controller scsi to st506
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6.22
READ
(28 H )
BIT
BYTE
7
6
5
4
3
2
I
0
------1------1------1------1------1------1------1------
00
0
0
I
0
I
0
0
0
01
02
(MSB)
Logical Block Address
03
Logical Block Address
04
Logical Block Address
05
Logical Block Address
(LSB)
06
Reserved
07
Number of Blocks
08
Number of Blocks
09
Reserved
I
Flag
1
Link
Figure 6-38.
READ Command
This command is an extended address command which is otherwise
identical to the Class 00 READ (08 H ) command.
The larger Logical Block Address and Number of Blocks fields are
provided for accessing very large devices.
Valid Errors:
Read Operation Errors (See Section 6.5)
500504-00
6-52

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