WOODWARD 9907-167伺服调速器,9907-167使用进展
设备探针功能完成设备探测，并将条目输入到设备描述符表中每当访问指定设备时；i、 e.当系统调用时.DSKRD。DSKWR。DSKCFIG。DSKFMT和。DSKCTRL，以及调试器命令BH、BO、IOC、IOP、IOT、MAR和MAW使用。
设备探测机制利用SCSI命令“查询”和“模式感知”。如果指定的控制器不是SCSI，则探测器只返回“设备存在且未知”的状态。这个device probe使用相关数据。输入后，下次探测完成后，它只返回“设备存在”状态（指针到设备描述符）。
WOODWARD 9907-167伺服调速器通过187Bug命令进行磁盘输入/输出以下187Bug命令用于磁盘I/O。有关其使用的详细说明，请参阅调试摩托罗拉88K RISC CPU用户手册包。当向特定控制器LUN和设备LUN发出命令，这些LUN由187Bug记住，以便下一个磁盘命令默认使用相同的控制器和设备。IOI（输入/输出查询）此命令用于探测系统中所有可能的CLUN/DLUN组合并显示设备的查询数据支持它。设备描述符表只有16个空间
设备描述符；使用IOI命令，您可以查看表并在必要时清除。IOP（到磁盘的物理I/O）IOP允许您读取或写入数据块，或格式化以某种方式指定设备。IOP创建命令包从指定的参数，然后调用
正确的系统调用功能来执行操作。物联网（输入/输出教学）物联网允许您更改任何可配置参数和设备的属性。此外，它允许您查看系统中可用的控制器。IOC（输入/输出控制）IOC允许您发送由直接指定控制器。国际奥委会也可以用来研究使用IOP命令后生成的设备数据包。BO（引导操作系统）BO从中读取操作系统或控制程序将指定的设备放入内存，然后将控制权转移给它。
Device Probe Function
A device probe with entry into the device descriptor table is done
whenever a specified device is accessed; i.e., when system calls
.DSKRD, .DSKWR, .DSKCFIG, .DSKFMT, and .DSKCTRL, and
debugger commands BH, BO, IOC, IOP, IOT, MAR, and MAW
are used.
The device probe mechanism utilizes the SCSI commands "Inquiry"
and "Mode Sense". If the specified controller is non-SCSI, the probe
simply returns a status of "device present and unknown". The
device probe makes an entry into the device descriptor table with
the pertinent data. After an entry has been made, the next time a
probe is done it simply returns with "device present" status (pointer
to the device descriptor). Disk I/O via 187Bug Commands
These following 187Bug commands are provided for disk I/O.
Detailed instructions for their use are found in the Debugging
Package for Motorola 88K RISC CPUs User's Manual. When a
command is issued to a particular controller LUN and device LUN,
these LUNs are remembered by 187Bug 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.
