Table 18 - Description of Command Symbols
DESCRIPTION
SYMBOL
SC
NAME
Number of
The number of sectors per track to be initialized by the Format
Sectors Per Track command. The number of sectors per track to be verified during a
Verify command when EC is set.
SK
Skip Flag
When set to 1, sectors containing a deleted data address mark will
automatically be skipped during the execution of Read Data. If
Read Deleted is executed, only sectors with a deleted address
mark will be accessed. When set to "0", the sector is read or
written the same as the read and write commands.
SRT
Step Rate Interval The time interval between step pulses issued by the FDC.
Programmable from 0.5 to 8 milliseconds in increments of 0.5 ms
at the 1 Mbit data rate. Refer to the SPECIFY command for actual
delays.
ST0
Status 0
Status 1
Status 2
Status 3
Write Gate
Registers within the FDC which store status information after a
command has been executed. This status information is available
to the host during the result phase after command execution.
ST1
ST2
ST3
WGATE
Alters timing of WE to allow for pre-erase loads in perpendicular
drives.
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