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When a disk transfer is requested:
If the conversion from blocks to sectors yields a fractional sector
count, an error is returned and no data is transferred.
Device Probe Function
A device probe with entry into the device descriptor table is
performed whenever a specified device is accessed; i.e., when
system calls:
or debugger commands:
are used.
Start and size of the transfer is specified in blocks
177Bug translates this into an equivalent sector specification
Passes the sector specification on to the controller to initiate
the transfer
.DSKRD
.DSKWR
.DSKCFIG
.DSKFMT
.DSKCTRL
BH
BO
IOC
IOP
IOT
MAR
MAW
Disk I/O Support
B-15
B
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