Xerox 7240 Reference Manual page 24

Removable disk storage system
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16
Programming Considerations
no
Clear address registers.
Send bytes to
address registers.
Start heads moving
to new cylinder.
no
Enable interrupt to occur
after device completes
Seek operation or after
Seek Timeout error.
/
""
I. L •
.....
,,,,
Set sector unavai I able
flag (cylinder> 202 or
head> 19 or sector> 5).
Figure 7.
Seek Order
1
I
\
\ U. E)

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