JPS6288002A - Remote control system - Google Patents

Abstract

PURPOSE:To smooth debugging or maintenance by specifying optional peripheral devices of plural information processors from a controller and then performing initial program loading (IPL). CONSTITUTION:A remote control system consists of information processors 1 and 2, panel interface adapters 1A and 2A, peripheral devices 1B-1D and 2B-2D, and the program-controlled controller C. Those adapters 1A and 2A each consists of a microprocessor 22, a ROM 23, a RAM 24, etc., and a key control register 21 is provided with an IPL reference part 211 (register BSW) where the numbers of IPL object peripheral devices of the information processors 1 and 2 and the execution contents are recorded. Then, the controller C after selecting the adapter 1A or 2A sends out said numbers and execution contents to it. Those adapters 1A and 2A actuate the information processors 1 and 2 and send them to the processors 1 and 2 to select desired peripheral devices 1B-1D and 2B-2D, thereby performing IPL.

Description

[Detailed Description of the Invention] [Summary] In an information processing system in which a plurality of information processing devices are connected to respective panel interface adapters, and a program-controlled control device and the panel interface adapters are connected via an interface bus, the information processing devices Initial program load of any peripheral device (hereinafter referred to as I
In order to perform IPL (referred to as PL), the control device instructs the panel interface adapter to specify the number of the desired peripheral device and the content of IPL execution, and the information processing device refers to the number and content of execution to execute the specified peripheral device. By selecting and executing iPL, system debanking or maintenance can be performed smoothly.

[Industrial application field]

The present invention relates to an improvement in a remote control method in a system in which a plurality of information processing devices are coupled to a control device via an interface bus through respective adapters.

The concept of a remote control method for remotely controlling a plurality of information processing devices from a control device will be explained below.

Figure 4 is a block diagram of the remote control system.
is an information processing device, 1A, 2A to 5A are panel interface adapters, IB, 2B to 5B are peripheral devices, C is a control device by program control, and 6 is, for example, IEEE-48.
This is an interface bus according to the regulations of 8/488A.

The same reference numerals indicate the same objects throughout the figures below.

the control device C and the panel interface adapter LA;
Device numbers #0 to #5 are assigned to devices 2A to 5A, respectively, and the device numbers #0 to #5 designate a transfer function such as a sending side or a receiving side of information, and exchange information.

Control device C is the desired panel interface adapter 1^
, 2A to 5A and send the information. Next, for example, the panel interface adapter 1A starts up the connected information processing device 1, and the information processing device 1 performs internal processing and control of the attached peripheral device IB based on the information sent from the control device C via the panel interface adapter 1A. I do.

Further, the internal states of the information processing devices 1, 2 to 5 can be read by the control device C, and remote control is performed in conjunction with the above control operations.

The peripheral devices IB, 2B to 5B include those that require IPL, such as a magnetic tape device, and these are controlled by the microprograms of the information processing devices 1.2 to 5.
Usually, a fixed designation for the device is written in the program.

In recent years, in addition to magnetic tape devices, peripheral devices that require IPL have increased and diversified, such as magnetic disk devices and floppy disk devices. A remote control method from the control device C that can select peripheral devices to be IPLed and execute IPL corresponding to each device is desired.

[Conventional technology]

FIG. 5 is a block diagram of a conventional remote control system.
1 is a key control register that receives various signals for controlling the information processing device 1, and communicates with the information processing device through a key operation information line 11;

In addition, 22 is a microprocessor that controls each part, and 23 is a read-only memory (R(
IM), 24 is random access memory (1?AM),
25 is a general-purpose interface adapter having an interface function between the interface bus and the internal bus; 26;
is an internal bus, and 27 is a driver.

FIG. 6 is an explanatory diagram of a key control command, which is used to perform the same control as when operating keys on the operation panel of the information processing device, and the command is sent from the control device to the panel interface adapter.

The first data byte DBO indicates the order, and the second data byte DBI corresponds to the key to be operated, including manual clear start (MCLRSTA), initial program load (IPL), emergency operation suppression (ASUP), emergency Science operation start (E
MASTA), address stop (ADDSTP)
The third data byte DB2 is a redundancy code for error checking.

Remote control of IPL will be explained.

For example, the control device C shown in FIG. 5 designates and selects the number #1 of the panel interface adapter 1, and also designates the IPL bit of the key control command shown in FIG. 6 and sends it to the panel interface adapter 1A. The panel interface adapter 1A starts the information processing device 1,
The information processing device 1 learns the IPL bit designation in the key control register 21 of the panel interface adapter 1^ via the key information line 11, operates the IPL processing microprogram, and controls the peripheral device IB specified in the program. For example, execute IPL of a magnetic tape device.

[Problem that the invention seeks to solve]

In the conventional method described above, the IPL of a specific peripheral device of the information processing device can be executed by the micro programger of the information processing device under remote control from the control device. The control target is fixed because the specification of the magnetic tape device is included.

However, as the number of peripheral devices targeted for IPL increases from magnetic tape devices to magnetic disk devices, Fronbi disk devices, etc., it becomes necessary to rewrite the microprogram to suit the target. For example, all IPL target peripheral devices must be IPLed, and any peripheral device cannot be arbitrarily IPLed, resulting in a problem in that depacking and maintenance of the system cannot be carried out smoothly.

[Means for solving problems]

The above problem is solved by providing the control device with a means for specifying the desired IPI of the information processing device connected thereto, the number of the target peripheral device, and the execution content of the IPL in the desired panel interface adapter. The adapter is provided with means for accumulating the number and execution contents, and the information processing device refers to the accumulated contents of the panel interface adapter, selects a desired peripheral device, and executes the IPL.
This problem is solved by the present invention, which provides means for controlling the problem.

[Effect]

That is, in the present invention, after selecting a panel interface adapter, the control device sends the number of the peripheral device to be IPLed of the information processing device and the IPL to the panel interface adapter.
Send specification of execution contents.

The panel interface adapter starts up the information processing device and notifies the information processing device of the accumulated number and execution details.

The information processing device operates the rPL processing microprogram in response to the IPL instruction, refers to the accumulated contents of the panel interface adapter, selects the desired peripheral device, and
Execute PL. In this way, the IPL of a desired peripheral device can be remotely controlled from the control device.

〔Example〕

The present invention will be specifically explained below with reference to illustrated examples.

FIG. 1 is a flowchart of an IPL control program according to an embodiment of the present invention, FIG. 1(a) is a flowchart of an IPL designation control program of a control device C, and FIG. It is a control program flowchart.

The control device C is equipped with an IPL designation control program as shown in FIG. Furthermore, it has a function of instructing to restore the contents of the registers of the panel interface adapters LA and 2A used for the above instruction after a certain timing.

Information processing device 1. 2, the IPL shown in FIG. 1(b)
An execution control program is installed, and this program has a function of referring to the number of the desired peripheral device of the panel interface adapters 1A and 2Δ and the execution contents of the IPI-, and executing the IPL of the desired peripheral device.

FIG. 2 is a block diagram of the remote control power 1 according to the embodiment of the present invention, and 21i is the number of the iPL target peripheral device of the information processing device 1 sent from the control device C and the execution of Ip +. In the IP1. reference section of the present invention that records the contents, registers BSWO, BSW1 to BS15 are assigned to this.112 is a selection line that controls the selector 212 that selects the register from the information processing device 1. Reference numeral 111 is an information line that transmits the selected register contents of registers [1SWO, BSWI to BSW15.

Further, IB, LC, and 10 are IPL target peripheral devices of the information processing device 1, and 2B, 2C, and 2D are IPL target peripheral devices of the information processing device 2.
L, target peripheral device.

Figure 3 is an explanatory diagram of the Wright-Brannas 1' Sochi Data command, which is a combination of the number and IP address of the peripheral device to be IPLed.
L is used by the control device C to instruct the specification of execution contents,
Panel ink face aggressive 1A.

The contents of the instruction are stored in the rPL reference section 211 for 2.

The first data byte DBO in FIG. 3(a) indicates the order, and the BSW of the second data byte DBI is 4 bits and indicates the IPL.
Enter the number of the target peripheral device in registers BSWO, BSW1~
Specify it in the form of a register number in correspondence with BSW15,
In addition, as shown in Figure 3(b), with 2 bits of ST, IP
The execution contents of L are execution (JUMP at 01), non-execution (
The third data byte DB2, which indicates 0FF (00), is a redundancy code for error checking.

The IPL control operation will be explained using an example in which the information processing apparatus 1 is targeted.

In FIG. 1(a), the control device C starts the IPL specified control program.
After selecting the panel interface adapter 1A connected to the information processing device 1 that executes L, in step SP2, the desired peripheral device number (BSWO, BSWI in this example) and IPL execution content are specified using the write branch switch data command. Execution or non-execution (JUMP or 0FF)
Then, in step SP3, IPL is instructed by a key control command.

The panel interface adapter 18 starts up the information processing device 1 according to the IPL instruction and transmits the TPL instruction. Also, the numbers of peripheral devices IB, IC, and 10 are in the IPL reference section 21.
The corresponding register is designated by the number of the desired peripheral device instructed by the control device C, and the execution contents of the IPL are recorded in the register and transmitted to the information processing device 1. .

The information processing device 1 starts an IPL execution control program in response to an IPL instruction from the panel interface adapter 1A.

In FIG. 1(b), first, in step 5PII, registers BSWO and BSWI of the IPL reference section 211 of the panel interface adapter are referenced by operating the selector 212 via the selection line 112.

At step 5P12, the contents of register B5-0 are JUMP.
At this time, if this register corresponds to a magnetic tape device, IPL of the magnetic tape device is executed in step 5P13. If the content is OFF, the content of the next register BSWI is referred to in step 5P14.

If the content of the register is JIIMP and this register corresponds to a magnetic disk device, proceed to step 5P.
In step 15, IPL of the magnetic disk device is executed.

If the content is OFF, the IPL of the floppy disk device is executed in step 5P16, and the operation flow is ended.

The above is the operation flow of the information processing device 1, but the explanation of the operation flow of the control device C remains, and that explanation will be continued below.

Here, registers BSWO and BSWI are not provided only for IPL, but are also used for other purposes, so they must be restored to their original state when not in IPL operation (this is necessary). Therefore, the control device C controls the IPL of the information processing device 1.
The register must be restored before the end of the operation.

Therefore, in step SP4, a constant timing shorter than the TPL control time of the information processing device 1 is taken, and then in step SP5, the previous contents of the registers n5Wo and BSWI are again instructed, and the control flow is ended.

〔Effect of the invention〕

As explained above, in the remote control method according to the present invention, it is possible to specify any peripheral device of a plurality of information processing devices from the control device to execute IPL, and to depack or maintain a system with a multiprocessor configuration. This has the effect of facilitating smooth operation.

[Brief explanation of drawings]

FIG. 1 is a flowchart of an initial program load control program according to an embodiment of the present invention, FIG. 2 is a block diagram of a remote control system according to an embodiment of the present invention, FIG. 3 is an explanatory diagram of a write/branch switch/data command, and FIG. The figure is a block diagram of a remote control system, FIG. 5 is a block diagram of a conventional remote control system, and FIG. 6 is an explanatory diagram of key control commands. In the figure, 1 and 2 are information processing devices, LA and 2A are panel interface adapters, IB,
IC, 10, 2B, 2G, 2D are peripheral devices, C is a control device, 11 is a key operation information line, 111 is an information line, 112 is a selection line, 21 is a key control register, 211 is an IPL reference section, 212 is a selector , 6 indicates an interface bus.

Claims (1)

[Claims] A plurality of information processing devices (1), (2) to (5) are connected to respective panel interface adapters (1A), (2A) to
(5A) to connect the program-controlled control device and the panel interface adapter to the interface bus (5A).
In the information processing system connected by 6), the control device is provided with a means for instructing the corresponding panel interface adapter the number of the peripheral device to be loaded with the initial program of the information processing device and the execution contents of the initial program load; The interface adapter is provided with means for storing the number and execution contents, and the information processing device is provided with means for referencing the stored contents of the panel interface adapter and controlling initial program loading. remote control method.