CN104077156A - Restarting system for programmable central processing unit and method thereof - Google Patents

Abstract

The present invention relates to a restart system and method for a programmable central processing unit. The system includes a power-saving mode confirmation unit, a startup mode selection unit and a storage unit storing a master control program, and the master control The program includes an interrupt service sequence execution instruction and a direct startup execution instruction. Therefore, before the central processing unit enters the power saving mode, it first writes a selection data into the startup mode selection unit, and then writes the determination status data into the In the power-saving mode confirmation unit, so as to enter the power-saving mode state; when the central processing unit receives an interrupt signal, the main control program reads the corresponding instruction according to the selected data, and proceeds according to the read instruction content The corresponding opening mode is more selective than the common one and improves the operating efficiency of the overall system.

Description

Programmable central processing unit restart system and method thereof

technical field

The present invention relates to an electronic signal processing technology, in particular to a system and method for restarting a programmable central processing unit, which provides that when the system restarts after entering the power-saving mode, it enters the interrupt service sequence immediately after starting The startup mode and the direct startup mode that skips the interrupt service sequence provide users with multiple choices.

Background technique

The central processing unit (CPU) is an integrated circuit of electronic circuits, which is also the circuit in the computer for processing, control and storage. Various calculations, input and output, and connection memory in the computer are executed and controlled by the central processing unit.

And if the computer is in the standby (standby) state, in order to save power, the central processing unit will also be in the power saving mode (powerdown mode), and will not be turned on until it receives an interrupt signal input from the outside (such as a keyboard, mouse). (power on) and then restart, and continue the execution of the interrupted program before entering the power saving mode.

However, the traditional opening procedure is that after the central processing unit receives an interrupt signal, it will first enter an interrupt service sequence, execute the interrupt content in the interrupt service sequence, and then continue the action before the power saving mode (such as executing halfway application program), however, this method of operation is time-consuming and non-selective. Even if the interrupt content in the interrupt sequence is empty (empty), the CPU still needs to execute this program, and then perform the actions before the interrupt. It causes time consumption, which in turn affects the efficiency of the overall operation of the system.

Contents of the invention

In view of the disadvantages of the above conventional technologies, the main purpose of the present invention is to provide a system and method for selectively restarting a programmable central processing unit.

Another object of the present invention is to provide a system and method for restarting a programmable central processing unit that saves time and is more efficient.

In order to achieve the above object, the main feature of the present invention is to establish a restart system of a programmable central processing unit, which restart system includes: a power saving mode confirmation unit, which is used to receive the write when the central processing unit enters the power saving mode state Entering a certain state data to determine that the central processing unit is in the state of power saving mode; a startup mode selection unit is used to receive and write a selection data when the central processing unit enters the power saving mode, so as to determine the program to be restarted; and a storage unit storing a main control program, which includes an interrupt service sequence execution command and a direct start execution command, receiving the selection data to read the corresponding command in the main control program, therefore, When an interrupt signal is input to the central processing unit, a corresponding opening step is performed according to the content of the read instruction.

According to the above system, the restart method of the programmable central processing unit of the present invention includes: before the central processing unit enters the power saving mode, first, the central processing unit writes a selection data into the startup mode selection unit to Determine the opening command to be read; then, the central processing unit writes the determined status data into the power-saving mode confirmation unit; finally, when the central processing unit receives an interrupt signal, the main control program is based on the selected data. The corresponding instruction is read, and the corresponding opening mode is performed according to the content of the read instruction.

Therefore, the restart system and method of the programmable central processing unit of the present invention provide a start mode selection unit for the central processing unit to write selection data and provide different start commands in the storage unit, so that the user can choose different The start mode is more selective than the usual only one start mode; in addition, a direct start mode is provided to solve the common problem of first entering the interrupt service sequence and then performing the actions before entering the power saving mode. The restart process saves time, compared to the entire The system also operates more efficiently.

Description of drawings

The drawings described here are used to provide further understanding of the present invention, constitute a part of the application, and do not limit the present invention. In the attached picture:

FIG. 1 is a schematic block diagram of a preferred embodiment of a restart system of a programmable central processing unit in an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a preferred embodiment of a method for restarting a programmable central processing unit in an embodiment of the present invention;

Description of main component symbols

1 Central processing unit

2 Power saving mode confirmation unit

3 Start mode selection unit

4 storage unit

40 Main control program

41 Interrupt service sequence execution instruction

42 Directly start the execution command

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

In the following, with reference to Fig. 1 and Fig. 2 in the accompanying drawings, the preferred embodiments of the restart method and device of the central processing unit of the present invention are respectively disclosed in detail.

FIG. 1 shows the application architecture and internal architecture of the restart system of the programmable central processing unit of the present invention. The system roughly includes a power-saving mode confirmation unit 2 , a startup mode selection unit 3 and a storage unit 4 .

The power-saving mode confirmation unit 2 refers to a status register (Status register) in this embodiment, which is coupled to the central processing unit 1 to receive a certain status data written when the central processing unit 1 enters the power-off state; The determined state data refers to a binary value of 0 or 1, which represents that the central processing unit 1 is in a power-down state or in a power-on state.

The startup mode selection unit 3 also refers to a status register (Status register) in this embodiment, which is coupled to the central processing unit 1 to receive a selection data written when the central processing unit 1 enters the power saving mode state; The selection data also refers to a binary value of 0 or 1, which is used to correspond to the opening mode to be selected.

The storage unit 4 refers to a random access memory (RAM) in this embodiment, which stores a main control program 40, which contains an interrupt service sequence execution instruction 41 and a direct start execution instruction 42 corresponding to the selected data, wherein , the main control program 40 can read the corresponding execution instruction (interrupt service sequence execution instruction 41 or direct start execution instruction 42) according to the selection data of the startup mode selection unit 3, and perform corresponding execution according to the content of the read instruction Turn on (power on) steps.

During actual operation, before the central processing unit 1 is in the state of the power saving mode (power down), the central processing unit 1 first writes a selection data into the startup mode selection unit 3 to determine the program to be opened; then, write Enter a certain status data into the power saving mode confirming unit 2 to notify the central processing unit 3 to enter the power saving mode. When the central processing unit 1 receives an interrupt signal from the outside (such as keyboard, mouse), the main control program 40 reads the corresponding execution instruction according to the selected data, and performs corresponding execution according to the read instruction content. The open (power on) steps.

Please refer to Figure 2, which is a schematic flow chart of the restart method of the central processing unit of the present invention. A selection data is a binary value of 0 or 1 to another status register, which is used to correspond to the opening mode to be selected.

In step S2, the central processing unit writes the determined state data into the power saving mode confirming unit. In this embodiment, it means that the central processing unit inputs a binary value whose state data is 0 or 1 to the state register to notify the central processing unit to enter the power saving mode, and then the central processing unit enters the power saving mode (power down) .

In step S3, when the central processing unit receives an interrupt signal input from the outside, it controls the main control program to read the selection data, and the main control program reads the corresponding instruction according to the selection data.

Step S4, continue fetching the execution command of the service sequence, and perform the interrupt service sequence mode (INT Service queue), that is, first read the interrupt content in the interrupt service sequence and then perform the action before the power saving mode (power down) (such as executing program of).

Step S5, read the direct start instruction, and perform the direct start mode; that is, directly perform the action before the power saving mode (such as the program in execution).

In summary, the present invention provides a programmable central processing unit restart system and its method, and provides a programmable startup system for users to have different options for starting (power on) Or select the corresponding restart mode as needed. And provide a direct boot mode to solve the common need to enter the interrupt service sequence and then execute the program before the power saving mode (power down). The restart process saves time and is more efficient than the operation of the entire system.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (8)

1. the restarting systems of a programmable CPU (central processing unit), it is characterized in that, comprise: a battery saving mode confirmation unit, writes a definite status data in order to receive when this CPU (central processing unit) enters battery saving mode state, to determine that this CPU (central processing unit) is in power down state; One start-up mode selected cell, writes selection data in order to receive when this CPU (central processing unit) enters power down state, to determine the opening program of selection; An and storage unit, store a primary control program, and this primary control program comprises that a break in service sequence is carried out instruction and direct a startup carried out instruction, with according to central processing unit controls according to these selection data so that corresponding instruction is read, therefore, when a look-at-me inputs to after CPU (central processing unit), according to the command content reading, carry out corresponding open mode.

2. the restarting systems of programmable CPU (central processing unit) as claimed in claim 1, is characterized in that, this battery saving mode confirmation unit is a status register.

3. the restarting systems of programmable CPU (central processing unit) as claimed in claim 1, is characterized in that, this determines that status data is a binary digit.

4. the restarting systems of programmable CPU (central processing unit) as claimed in claim 1, is characterized in that, this start-up mode selected cell is a status register.

5. the restarting systems of programmable CPU (central processing unit) as claimed in claim 1, is characterized in that, this storage unit is a random access memory.

6. the restarting systems of programmable CPU (central processing unit) as claimed in claim 1, is characterized in that, this open mode be break in service sequence pattern and directly open mode one of them.

7. a method for restarting for programmable CPU (central processing unit), is characterized in that, comprising: CPU (central processing unit) writes selection data to this start-up mode selected cell, to determine the open command of wanting to read; This CPU (central processing unit) writes determines that status data is to this battery saving mode confirmation unit, to enter battery saving mode state; CPU (central processing unit) receives a look-at-me, controls primary control program according to selecting data to read corresponding instruction, and carries out corresponding open mode according to the command content reading.

8. the method for restarting of programmable CPU (central processing unit) as claimed in claim 7, is characterized in that, this open mode be break in service sequence pattern and directly open mode one of them.