HP Vectra Technical Reference Manual page 256

Table 8.4
Hard Disc Parameter Table
Offset
DOH
02H
03H
OSH
07H
OCH
OEH
OFH
Length
in Bytes
2
1
2
2
5
2
1
1
Description
Total number of cylinders
Total number of Read/Write Heads
Reserved
Starting cylinder for write precompensation
Reserved
Cylinder to use as landing zone
Number of sectors per track
Reserved
8.3 Disc Driver (INT 13H)
The following is a list of descriptions for each of the INT 13H functions. All registers not specified
in the exit parameters are returned unchanged. Following the function description is a list of the
return status codes used by the INT 13H drivers. A summary of these functions is shown in table
8.5.
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