3-18
Debugger General Information
3
The following system calls are provided to allow user programs to
do disk I/O:
Refer to the Debugging Package for Motorola 68K CISC CPUs User's
Manual for information on using these and other system calls.
To perform a disk operation, 162Bug must eventually present a
particular disk controller module with a controller command
packet which has been especially prepared for that type of
controller module. (This is accomplished in the respective
controller driver module.) A command packet for one type of
controller module usually does not have the same format as a
command packet for a different type of module. The system call
facilities which do disk I/O accept a generalized (controller-
independent) packet format as an argument, and translate it into a
controller-specific packet, which is then sent to the specified device.
Refer to the system call descriptions in the Debugging Package for
Motorola 68K CISC CPUs User's Manual for details on the format and
construction of these standardized user packets.
The packets which a controller module expects to be given vary
from controller to controller. The disk driver module for the
particular hardware module (board) must take the standardized
packet given to a trap function and create a new packet which is
.DSKRD
Disk read. System call to read blocks from a disk into
memory.
.DSKWR
Disk write. System call to write blocks from memory onto
a disk.
.DSKCFIG
Disk configure. This function allows you to change the
configuration of the specified device.
.DSKFMT
Disk format. This function allows you to send a format
command to the specified device.
.DSKCTRL Disk control. This function is used to implement any
special device control functions that cannot be
accommodated easily with any of the other disk
functions.
Содержание 700 Series
Страница 2: ......
Страница 3: ...700 800 Series MVME162LX Embedded Controller Installation and Use V162 7A IH1 ...
Страница 48: ...1 34 Board Level Hardware Description 1 ...
Страница 70: ...2 22 Hardware Preparation and Installation 2 ...
Страница 138: ...A 18 Configure and Environment Commands A ...
Страница 144: ...B 6 Disk Tape Controller Data B ...
Страница 146: ...C 2 Network Controller Data C ...
Страница 156: ...Index IN 6 I N D E X W watchdog timer 1 24 Z Z85230 serial communications controllers SCCs 3 6 ...