JPH04155412A - Method for controlling resume - Google Patents

Abstract

PURPOSE:To attain an appropriate restoring processing by previously a registering specific operation which can not restart normal operation and additional information or the like necessary for starting the operation in transfer operation to a normal resuming state. CONSTITUTION:When resume processing is started, the status of a device is checked. The resume processing interrupts the operation in executing and stops power supply to respective parts except a circuit for storing minimum information necessary for restarting the operation. After deciding the validity of the resume processing, a normal general operation available for resuming can execute a resume state transfer processing. In the normal transfer processing to the resuming state, specific operation disabled from being restored to normal operation is previously registered and the transfer processing to the resuming state is inhibited in the specific operation. Thus, the processing disabled from being restored by the normal resume processing can be recognized and appropriate restoring processing can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a resume control method for controlling transition to a resume state and return processing from a resume state in a personal computer, workstation, or the like.

(Prior Art) In personal computers, workstations, etc., for example, when an operator sits down and does not perform any operations, a process of transitioning to a resume state is performed in order to reduce consumption of the cathode ray tube display and reduce power consumption. .

This resume state is a process in which the operation currently being executed is interrupted and the supply of power is stopped except for the circuits that hold the minimum information necessary for restarting the operation. The transition to the resume state is executed not only by the occurrence of an event accompanying a monitoring operation by a timer or the like as just described, but also by pressing a power switch, or by a predetermined software command.

FIG. 2 shows a flowchart of a conventional resume control method.

As shown in the figure, when an event occurs to start the resume process, such as by pressing the power switch (step S1
), a predetermined resume state transition process is executed (step S2). Then, the device enters a resume state (step S3), and it is then determined whether the power switch or the like is pressed again (step S4). This pressing of the power switch, etc. is for instructing the resume return process.

In step S4, when a press of a power switch or the like is detected, the process moves to step s5, and a resume return process is executed. Then, the resume processing is terminated (step s8), and the execution of the normal processing is continued again.

Shifting to the shuum process in this way can extend the battery operating time, and return from the resume state to the normal process can be performed in a shorter time than in a general startup process.

In addition, in the above-mentioned resume state transition processing, processing such as saving data in a preset register is performed, and in resume return processing, processing such as storing the saved data in the register anew is performed. .

(Problems to be Solved by the Invention) By the way, among the operations performed by a computer, there are some processes that cannot be returned to by the above-mentioned general resume process.

For example, there is an operation in which two registers are set to the same address in memory space and these registers are used alternately. When resume processing is started during such an operation, even if the contents of the register are saved as they are, the register that holds valid data will differ depending on what arithmetic operation was being interrupted. Therefore, due to the transition to the resume process, information necessary for returning to the original state is lost, and normal operation may not be able to continue after the return.

Therefore, for example, a personal computer that performs this type of operation does not have a resume processing function, and a computer that is capable of resume processing, on the other hand, adopts a system that does not perform operations that are difficult to recover from as described above. That's what I was doing. However, this limits the degree of freedom in designing personal computers and the like.

The present invention has been made with attention to the above points, and an object of the present invention is to provide a resume control method that recognizes processes that cannot be returned to by normal resume processing and enables appropriate return processing. That is.

(Means for Solving the Problems) A first aspect of the present invention provides a resume system that suspends an operation in progress and stops supplying power to all circuits except for a circuit that holds the minimum information necessary for resuming the operation. During the transition process to the state,
The present invention is characterized in that a specific operation that cannot be resumed normally in the transition process to the normal resume state is registered in advance, and the transition process to the resume state is prohibited for the specific operation.

Further, the second aspect of the present invention is to interrupt the operation being executed,
When transitioning to a resume state in which power supply is stopped except for circuits that retain the minimum information necessary to resume operation, identify cases where normal operation cannot be resumed through normal transition processing to the resume state. The operation and the additional information necessary for restarting the operation are registered in advance, and when the execution of the specific operation is interrupted, the additional information is separately saved, the transition process to the resume state is performed, and the above-mentioned save destination is This is characterized in that the additional information is extracted from the computer and the process of returning from the resume state is performed.

(Effect) With this method, in normal resume state transition processing,
A specific operation that cannot be resumed normally is registered in advance in a memory or the like, and for such an operation, transition processing to a resume state is prohibited until the operation is completed.

On the other hand, when such an operation is recognized, additional information necessary for restarting the operation is saved, allowing normal recovery. The contents of this additional information are also registered in advance. This improves the reliability of the operation of the device after the resume processing.

(Example) Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

FIG. 1 is a flowchart showing a first embodiment of the resume control method of the present invention.

In the figure, first, when resume processing is started (step S1), the state of the device is checked (step S2).

In addition, in the present invention, the above-mentioned resume processing means, as explained earlier, that the operation in progress is interrupted and the power supply is stopped except for the circuit that holds the minimum information necessary for resuming the operation. This is the process of

In the status check in step S2, it is determined whether the operation currently being executed is a specific operation that cannot be resumed normally in a normal resume state transition process. In making this determination, a specific operation included in the program of the personal computer or the like is registered in advance in a memory or the like and is referred to. Based on such judgment,
After going through step S3 of determining whether or not it is possible to resume, if it is a normal general operation that can be resumed, step S4 is performed.
Resume state transition processing is executed.

Then, in step S5, the computer is brought into a resume state, and thereafter, it is determined whether an event such as pressing of a power switch has occurred (step S6). Then, when the power switch or the like is pressed, a resume return process is executed (step S7), the resume process is completed (step S8), and the process shifts to normal processing.

The operations from step 84 to step s8 are different from the operations previously described from step 32 to step s6 in FIG. Therefore, duplicate explanations will be omitted.

In addition, in step S3 in FIG. 1, if it is determined that the operation that has been executed so far is a specific operation that cannot be resumed normally by the process of transitioning to the normal resume state, the resume state is changed. The process exits without transitioning to . That is, the resume transition request is rejected. Therefore,
Transition to the resume state is not performed until such specific operations are completed.

In order to perform the above operations, it is preferable to use an apparatus having the following configuration.

FIG. 3 shows a block diagram of an apparatus for implementing the present invention.

In the figure, this device is controlled by a central processing unit (CPL7) 2 connected to a pass line 1. In addition to the CPU 2, the pass line 1 includes a read-only memory (ROM) 3 and a random access memory (RAM).
4 and processing determining means 5 are connected.

The read-only memory 3 is a memory that stores a resume processing program 3a by the CPL 72. still,
This memory also stores a program for normal processing by the CPU 2, but is not shown here.

The random access memory 4 includes a work area 4a for normal processing, and an additional information save area 4b for storing additional information necessary for resuming the specific operation when the above-described resume processing is performed. , has a flag area 4c for storing a flag indicating that additional information is stored.

In addition to this, the process determining means 5, which is constituted by a random access memory or the like, selects an operation list 5a that corresponds to the specific operation described above during the operation executed by this device.
is registered. This specific action list consists of, for example, the subroutine name of the specific action, and if the format or content of additional information differs for each specific action, it also includes the type of additional information required to restart the action. They will be registered together.

That is, according to the apparatus shown in FIG. 3, in addition to controlling to avoid the resume process for the specific operation already explained in FIG. This enables resume processing.

The specific operation of the apparatus shown in FIG. 3 will be explained using FIG. 4.

FIG. 4 is a flowchart showing an embodiment of the resume control method 2 of the present invention.

In the figure, first, when an event such as pressing of a power switch occurs and resume processing is started (step Sl), the status is checked in step S2. In checking this state, the CPU 2 refers to the specific operation list 5a of the process determining means 5 shown in FIG.

This is to determine whether the operation currently being executed corresponds to this specific operation.

Then, it is determined whether normal resume processing is possible (step S3). If a specific operation is applicable and normal resume processing is not possible, the additional information registered in the specific operation list 5a is stored in the random access memory 4 as necessary. The additional information is saved from the work area 48 and the like to the additional information save area 4b. Of course, general register saving and the like performed in normal resume processing are also performed. Then, to indicate that such evacuation has been executed, the flag in the flag area 4C is turned on (step S4).

In this way, the resume state transition process is executed (step S5), and the resume state is entered (step S6).

Thereafter, in step S7, it is monitored whether an event such as pressing of a power switch has occurred. When the power switch is pressed, etc., a resume return process is executed (step S8). At this stage, it is determined whether the flag is on (step S9). This is C
The PU 2 performs this by referring to the flag area 4c of the random access memory 4 after completing the resume return processing. If the flag is on, step SIO
Then, the additional information is retrieved from the additional information save area 4b stored in the random access memory 4.

This is then stored at a necessary location in the work area 4a.

In this way, when the resume processing is completed (step 5l)
l), proceed to normal processing.

JiL-specifically, for example, when two registers are accessed at the same address and used alternately, such an operation is considered to be impossible to return to normal with normal resume processing. It is restored to the action list 5a. At the same time, information as to which register was valid at the time of transition to the resume process is registered as additional information to be saved. Therefore, information indicating that A is valid among registers A and -B is saved in the additional information save area 4b. and,
In the resume return process, information indicating that register A is valid is written to the work area 4a, allowing normal operation return.

In normal resume processing, there are various other operations that cannot be returned to normal, but depending on each operation, the additional information necessary for restarting the operation is stored in the additional information save area 4b in an appropriate form. All you have to do is make sure that it is evacuated.

The present invention is not limited to the above embodiments.

In implementing the method of the present invention, it is not necessary to use an apparatus having a block configuration as shown in FIG. That is, known circuit blocks of the same type for achieving the above functions may be combined.

(Effects of the Invention) According to the resume control method of the present invention described above, in the process of transitioning to a normal resume state, a specific operation that cannot be resumed normally, and an addition necessary for resuming the operation, can be performed. Since information etc. are registered in advance, it is possible to prohibit transition processing to the resume state for the specific operation to prevent malfunctions, save necessary additional information separately, and add it from the save destination when returning to resume. retrieve the information,
Normal recovery is possible as in normal operation. This results in
The degree of freedom in designing personal computers, workstations, etc. will be expanded.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing a first embodiment of the resume control method of the present invention, FIG. 2 is a flowchart of a conventional resume control method, FIG. 3 is a block diagram of an apparatus implementing the present invention, and FIG. 4 is a resume control method of the present invention. It is a flowchart which shows the control method 2nd Example. Patent applicant Oki Electric Industry Co., Ltd. - Go 1 Resume control method of the present invention First practical example No. 1
Figure Conventional resume control method Figure 2

Claims (1)

[Claims] 1. When transitioning to a resume state in which the power supply is stopped except for the circuit that suspends the operation being executed and holds the minimum information necessary for resuming the operation, the normal 1. A resume control method, comprising: registering in advance a specific motion for which normal operation cannot be resumed in transition processing to a resume state, and prohibiting transition processing to a resume state for the specific motion. 2. When transitioning to a resume state where the current operation is interrupted and the power supply is stopped, except for circuits that hold the minimum information necessary to restart the operation, transition to the normal resume state. In this case, a specific operation that cannot be resumed normally and the additional information necessary to resume the operation are registered in advance, and when the execution of the specific operation is interrupted, the additional information is saved separately and then resumed. 1. A resume control method, comprising performing transition processing to a state, retrieving the additional information from the save destination, and performing return processing from the resume state.