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Disk I/O Support
4-15
4
Disk I/O via 167Bug Commands
These following 167Bug commands are provided for disk I/O.
Detailed instructions for their use are found in the
Debugging
Package for Motorola 68K CISC CPUs User's Manual
. When a
command is issued to a particular controller LUN and device LUN,
these LUNs are remembered by 167Bug so that the next disk
command defaults to use the same controller and device.
IOI (Input/Output Inquiry)
This command is used to probe the system for all possible
CLUN/DLUN combinations and display inquiry data for devices
which support it. The device descriptor table only has space for 16
device descriptors; with the
IOI
command, you can view the table
and clear it if necessary.
IOP (Physical I/O to Disk)
IOP
allows you to read or write blocks of data, or to format the
specified device in a certain way.
IOP
creates a command packet
from the arguments you have specified, and then invokes the
proper system call function to carry out the operation.
IOT (I/O Teach)
IOT
allows you to change any configurable parameters and
attributes of the device. In addition, it allows you to see the
controllers available in the system.
IOC (I/O Control)
IOC
allows you to send command packets as defined by the
particular controller directly.
IOC
can also be used to look at the
resultant device packet after using the
IOP
command.
BO (Bootstrap Operating System)
BO
reads an operating system or control program from the
specified device into memory, and then transfers control to it.
Содержание MVME167 Series
Страница 1: ...MVME167 Single Board Computer Installation Guide MVME167IG D4 ...
Страница 6: ......
Страница 106: ...4 28 Debugger General Information 4 ...
Страница 132: ...5 26 Using the 167Bug Debugger 5 ...
Страница 146: ...A 14 Configure and Environment Commands A ...
Страница 152: ...B 6 Disk Tape Controller Data B ...
Страница 160: ...D 6 Troubleshooting the MVME167 Solving Startup Problems D ...
Страница 168: ...E 8 EIA 232 D Interconnections E ...