WO2021013044A1

WO2021013044A1 - Circuit connection preservation method, fpga system and storage medium

Info

Publication number: WO2021013044A1
Application number: PCT/CN2020/102440
Authority: WO
Inventors: 何杰
Original assignee: 深圳市紫光同创电子有限公司
Priority date: 2019-07-22
Filing date: 2020-07-16
Publication date: 2021-01-28
Also published as: CN110555233A; JP2021534471A; JP7062793B2

Abstract

The embodiment of the present application provides a circuit connection preservation method, FPGA system and storage medium, the method respectively establishes circuit connection models for various types of circuit connections in the circuit; in the same type of circuit connection, the start devices, end devices of multiple circuit connections, and the start ports and end ports connected to the circuit connection are the same; the circuit connection model comprises the information of the start port and the end port, and the information of the start device and the end device; the start device is the device connected to the start point of the circuit connection, the end device is the device connected to the end point of the circuit connection, and preserving the circuit connection in the circuit based on the circuit connection model solves the problem that the prior circuit connection preservation occupies a lot of resources, the present invention also provides an apparatus and a storage medium, by implementing the above method, the memory resources consumed by preserving the circuit connection can be reduced.

Description

Circuit connection preservation method, FPGA system and storage medium

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on July 22, 2019, with the application number 201910662629.5 and titled "A method, device and storage medium for circuit connection preservation", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of FPGA (Field-Programmable Gate Array), and specifically relates to but not limited to a method for saving circuit connections, an FPGA system and a storage medium.

Background technique

FPGA is a kind of digital circuit or digital system that can realize almost all types through programming. It is realized by a large number of logic blocks, memory, and DSP (digital signal processor). FPGA has programmable function, can simplify the process of digital circuit design.

EDA (Electronic Design Automation) tool is a tool for designers to use hardware description language or schematic diagram to implement circuit design on a software platform. It can automatically complete logic compilation, comprehensive optimization, layout, routing and simulation, until the end Generate bit streams and perform programming downloads. It can help the designer to more conveniently view the situation of each stage in the whole process, make timely adjustments, and finally simulate the arrangement and connection of the circuit design on the FPGA chip in the tool. Designing with EDA tools greatly improves the efficiency, reliability and operability of circuit design, reduces the designer's labor intensity, and reduces the difficulty of circuit design.

Summary of the invention

The method for saving circuit connections, the FPGA system and the storage medium provided by the embodiments of the present application mainly solve the technical problem that the existing method for saving circuit connections in a circuit consumes a lot of memory resources.

In the first aspect, an embodiment of the present application provides a method for saving circuit connections, including: establishing circuit connection models for various types of circuit connections in the circuit; starting points for multiple circuit connections in the same type of circuit connection The device, the end device, and the start port and end port connected to the circuit connection are all the same; the circuit connection model includes the information of the start port, the end port, the information of the start device, and the end port. The information of the terminal device; the starting device is a device connected to the starting point of the circuit connection, the end device is a device connected to the terminal of the circuit connection; based on the circuit connection model, save all The circuit wiring in the circuit.

In the second aspect, an embodiment of the present application also provides an FPGA system, including a processor, a memory, and a communication bus; the communication bus is used to implement connection and communication between the processor and the memory; the processor is used to execute the memory One or more computer programs stored in the computer program to implement the steps of the circuit connection saving method described in the first aspect.

An embodiment of the present application further provides a storage medium, the storage medium stores one or more computer programs, and the one or more computer programs can be executed by one or more processors, so as to realize as described in the first aspect The steps of the circuit wiring preservation method.

The beneficial effects of this application are:

The embodiment of the application uses a method for saving circuit connections, an FPGA system, and a storage medium, and addresses the problem that circuit connections in existing saving circuits consume a large amount of memory resources, and establishes circuit connections for various types of circuit connections in the circuit. Line model, where in the same type of circuit connection, the start device, end device, start port port and end port of multiple circuit connections are the same. The circuit connection model includes the start port port of a certain type of circuit connection Information, terminal port information, starting device information, and terminal device information. That is to say, in this application, a circuit connection model includes information related to one type of circuit connection, and each circuit connection in the circuit is saved based on the circuit connection model. In this way, compared with the existing The way in which all the structures of circuit connections are preserved, in this application, the classification is based on the type of circuit connection, and the circuit connection is saved based on the type of circuit connection, which can save a lot of memory resources and improve user experience satisfaction.

Other features and corresponding beneficial effects of this application are described in the latter part of the specification, and it should be understood that at least part of the beneficial effects will become apparent from the description in the specification of this application.

Description of the drawings

FIG. 1 is a schematic flowchart of a method for saving circuit connections according to Embodiment 1 of the application;

2 is a diagram of related information in the coordinate system of the circuit connection in the first embodiment of the application;

FIG. 3 is a schematic flowchart of a method for saving circuit connections according to Embodiment 2 of the application;

4 is a diagram of related information in the coordinate system of the circuit module in the second embodiment of the application;

5 is a diagram of related information in the coordinate system of the device in the second embodiment of the application;

FIG. 6 is a diagram of the module relationship of the FPGA system according to the third embodiment of the application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the following describes the embodiments of the present application in further detail through specific implementations in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the application, and are not used to limit the application.

As the scale of circuit design becomes larger and larger, various layout resources and connection resources that need to be used in the circuit are also increasing, and especially the connection resources are exploding. The explosive growth of wiring resources not only consumes a large amount of memory in EDA tools, but also consumes a large amount of memory in expression and application, which increases the difficulty of modeling circuit wiring. Based on this, this application proposes the following solutions:

Example one:

In the prior art, when the EDA tool saves the circuit connections of its circuit resources, it usually saves all the circuit connections in the circuit one by one. As the scale of the circuit design becomes larger and larger, the circuit needs to be used. There are also more and more layout resources and connection resources, especially the explosive growth of connection resources. Therefore, adopting the existing method of saving circuit wiring will cause a large amount of memory resources to be occupied. In order to solve this problem, this embodiment proposes a circuit connection protection method, which is applied to an EDA tool. As shown in FIG. 1, the circuit connection preservation method includes:

S101. Establish circuit connection models for various types of circuit connections in the circuit.

It is understandable that in EDA tools, the starting point of the circuit connection is called the starting point, the end point of the circuit connection is called the end point, the starting device is the device connected to the starting point of the circuit connection, and the end device is the end point connected to the circuit connection. The start port is the port connected to the start of the circuit connection in the start device, and the end port is the port connected to the end of the circuit connection in the end device.

In some embodiments, for the same type of circuit wiring, it may be multiple circuit wirings with the same starting device, end device, and connected port. That is to say, if there are multiple circuit connections of the same type of start device, end device, start port, and end port in the circuit, the multiple circuit connections are the same type of circuit connection. That is to say, for the same type of circuit wiring, the device connected at the start point and the port of the device, the device connected at the end point and the port of the device are the same.

For example, suppose there are two DQS (Bi-directional Data Strobe, bi-directional data control pins) and two CIMs in a circuit, which are recorded as DQS1, DQS2, CIM1, and CIM2; there are circuit connection 1 and circuit connection 2. Recorded as net1 and net2 respectively. The start port of net1 is the WL_OV port on DQS1, the end port is the S_IY3 port on CIM1, the start port of net2 is the WL_OV port on DQS2, and the end port is the S_IY3 port on CIM2. The start device, start port, end device, and end port of net1 and met2 are the same. Therefore, net1 and net2 belong to the same type of circuit wiring.

Because circuit connections of different lengths have different transmission delays, etc., for the same type of circuit connection, it can also be the relative position of the starting device, the end device, the starting device and the end device of each circuit connection, And the start port and end port are the same. That is to say, if there are a starting device, a terminal device, the relative positions of the starting device and the ending device, and a circuit connection with the same starting port and end port in the circuit, they are the same type of circuit connection.

For example, suppose there are two device A (denoted as A1, A2), two device B (denoted as B1, B2), two circuit connections (denoted as net3 and net4) in a certain circuit, and the starting port of net3 Is port a on A1, the end port is port b on B1, the start port of net4 is port a on A2, the end port is port b on B2, and A1 is on the right side of B1, the distance is d, and A2 is also It is located on the right side of B2 and the distance is also d. Since the relative positions of the starting device, starting port, ending device, ending port, starting device and ending device of net3 and net4 are the same, they belong to the same type Circuit wiring.

It is understandable that a large number of circuits are stored in the EDA tool, for example, circuits that implement certain functions, FPGA chip circuits, and so on. In the circuits stored in the EDA tool, in most cases there will be at least two circuit connections of the same type mentioned above. Therefore, in order to reduce the memory resources consumed by the storage circuit connections, in this embodiment, The circuit connection models of various types of circuits in the circuits stored in the EDA tool are established respectively, that is, one circuit connection model corresponds to one type of circuit connection. Among them, for a certain circuit connection model, it includes related information of all circuit connections of a certain type in a certain circuit, and all circuit connections of this type can be recovered based on the circuit connection model. The circuit connection model can include the (related) information of the start port and the (related) information of the end port connected to any type of circuit connection, and the starting device of each circuit connection belonging to the type of circuit connection in the circuit (Relevant) information of and end device (relevant) information.

For example, following the above example, net1 and net2 belong to the same type of circuit connection. Assuming that the circuit connection of this type in the circuit is only net1 and net2, since net1 and net2 are connected to the same port, their corresponding circuit connection model The information included is: the related information of the WL_OV port of the starting device DQS1 and the starting device DQS2, the related information of the ending device CIM1 and the S_IY3 port of the ending device CIM2, the related information of the starting device DQS1, and the related information of the ending device CIM1, Information about the starting device DQS2 and information about the end device CIM2. In this way, the circuit connection model saves the relevant information about the type of circuit connection net1 and net2 in the circuit, and based on the circuit connection model, net1 and net2 can be restored.

Alternatively, the circuit connection model can also include the starting device type and end device type of a certain type of circuit connection model. For example, following the above example, net1 and net2 belong to the same type of circuit connection, assuming the circuit There are only net1 and net2 for this type of circuit connection. Since net1 and net2 are connected to the same port, the information included in the corresponding circuit connection model is: the information about the WL_OV port of the starting device DQS1 and the starting device DQS2 , End device CIM1 and end device CIM2 S_IY3 port related information, start device DQS type, end device CIM type, start device DQS1 related information, end device CIM1 related information, start device DQS2 related information, and end point Information about the device CIM2.

If the circuit connection of the same type is the starting device, the end device, the relative position of the starting device and the end device, and the connected port of each circuit connection are the same, because the relative position of the starting device and the end device of each circuit connection The same, based on the related information of the starting device and the relative position of the starting device and the end device, the related information of the end device can be obtained; or based on the related information of the end device and the relative position of the starting device and the end device, the information of the starting device can be obtained Related Information. Therefore, when the same type of circuit wiring is the starting device, starting port, ending device, ending port, the relative position of the starting device and the ending device, the relative information of the five factors of the circuit connection is the same, in order to save the circuit The memory resources consumed by the connection. The circuit connection model includes: information about the start port of any type of circuit connection, relevant information about the end port, and the relative position information of the start device and end device of this type of circuit connection , The relevant information of the starting device of each circuit connection of this type in the circuit; or, the circuit connection model includes: the relevant information of the starting port of any type of circuit connection, the relevant information of the end port, the The relative position information of the start device and the end device of the circuit connection of the type of circuit, and the related information of the end device of each circuit connection of the type in the circuit. In this way, based on the related information of the port of the starting device, the related information of the port of the end device, the related information of the starting device (or the related information of the end device) of each circuit connection, and the relative position information of the starting device and the end device, it can be restored The circuit wiring.

For example, following the above example, assuming that there is only net4 in the circuit that is of the same type as net3, the corresponding circuit connection model will include: net3 starting device A1 related information, net4 starting device A2 related information, Start port a, end port b, the relative position of the start device and the end device: the start device is on the right side of the end device, and the distance between the two is d. In this way, the end device B1 can be found according to the relative position of the start device and the end device and the start device A1, and net3 can be restored according to the start port a, the end port b, and the start device A1 and the end device B1. In the same way, net4 can also be restored.

Among them, the relative position information of the starting device and the end device can be based on the starting device and the position offset information of the end device relative to the starting device; or it can be based on the end device, and the starting device relative to the end device. information.

In this embodiment, before establishing circuit connection models for various types of circuit connections in the circuit, it is also possible to establish a coordinate system based on the specific layout of the circuit simulated in the EDA tool. In this way, every device in the circuit is With its unique coordinates, the device can be found based on the coordinates. Among them, the lower left corner of the circuit can be used as the origin, and the (X, Y) coordinate system can be established to the right and upward respectively. Of course, the coordinate system can also be established in other ways, which is not specifically limited in this application. In this way, the related information of the starting device of each circuit connection included in the circuit connection model can be the coordinate information of the starting device, and the related information of the ending device of each circuit connection can be the coordinate information of the end device, the starting device and the The relative position information between the end device may also be the coordinate offset between the start device and the end device.

For example, as shown in FIG. 2, FIG. 2 is a circuit that includes a first circuit connection (net5) 2011, a second circuit connection (net6) 2012, and a third circuit connection (net7) 2013. The coordinates of the start device (SRB1) 2021 of the first circuit connection 2011 are (1,1), the coordinates of the end device (CLMA1) 2031 are (4,5), and the start device (SRB2) 2022 of the second circuit connection 2012 The coordinates of is (8,1), the coordinates of the end device (SRB2) 2032 are (11,5), the coordinates of the start device (SRB3) 2023 of the third circuit connection 2013 are (1,7), the end device (SRB3) ) The coordinates of 2033 are (4,11). It can be seen that the end ports of the first circuit connection 2011, the second circuit connection 2012, and the third circuit connection 2013 are offset by 3 in the lateral direction and 4 in the longitudinal direction relative to the start port. In other words, net5, net6, and net7 belong to the same type of circuit connection.

On this basis, the start port of the start device (SRB1) 2021, the start device (SRB2) 2022, and the start device (SRB3) 2023 are collectively referred to as port 1, the end device (SRB1) 2031, the end port of the end device (SRB2) 2032 Collectively referred to as port 2. The information in the above-mentioned type of circuit wiring model includes: the related information of the starting device and/or the CLMA of the ending device, the related information of the starting port 1, the related information of the ending port 2, the relative position information of the starting device and the ending starting point (3,4) (ie horizontal offset 3, vertical offset 4), starting point coordinates (1,1), (8,1), (1,7), based on the circuit model, net5, net6, net7.

Among them, in order to reduce the resources occupied by saving circuit connections, the information related to the starting device of each circuit connection in the circuit connection model can be a representation obtained by processing the abscissa and ordinate of the starting device based on preset rules The integer of the coordinates of the starting device, and the related information of the ending device of each circuit connection may also be an integer representing the coordinates of the ending device obtained by processing the abscissa and ordinate of the ending device based on a preset rule. Among them, the preset rule can be flexibly set according to actual needs. For example, the preset can be Z=(X<<16)+Y, where X is the abscissa, Y is the ordinate, and Z is the processed value. It is stored in the circuit wiring model.

In some embodiments, the number of start point devices or end point devices of a type of circuit connection corresponding to a circuit connection model can be flexibly set according to actual needs. For example, in order to ensure the uniqueness of the starting point, the number of starting devices of a certain type of circuit connection corresponding to the circuit connection model is one, and the number of ending devices can be one or at least two.

S102. Save the circuit connections in the circuit based on the circuit connection model.

In this embodiment, after the circuit connection model is constructed, all relevant information about the circuit connections in the circuit is saved based on the circuit connection model. Among them, all circuit connection models corresponding to the circuit can be stored in an intermediate file.

After saving the circuit wiring in the circuit based on the circuit wiring model, when the circuit wiring of a certain device in the circuit needs to be loaded, the relevant information of each circuit wiring of the device in the circuit can be loaded based on the circuit wiring model come out.

This embodiment provides a method for saving circuit connections by separately establishing circuit connection models for various types of circuit connections in the circuit. Among them, in the same type of circuit connection, multiple circuit connection start devices, end devices, and The start port port and the end port are the same. The circuit connection model includes the information of the start port, the end port, the information of the start device, and the information of the end device of a certain type of circuit connection. That is to say, in this embodiment, a circuit connection model includes information related to one type of circuit connection, and each circuit connection in the circuit is saved based on the circuit connection model. In this way, compared with the existing In this embodiment, the circuit connection is classified based on the type of circuit connection, and the circuit connection is saved based on the type of circuit connection, which can save a lot of memory resources and improve user experience satisfaction. .

Embodiment two:

In order to better understand the present application, this embodiment is described in combination with more specific examples. Please refer to FIG. 3. FIG. 3 is a detailed flowchart of the circuit connection saving method provided by the second embodiment of the application. The circuit connection saving method includes:

S301. Establish a coordinate system based on the specific layout simulated by the FPGA chip circuit in the EDA tool.

Refer to Figure 4 for the specific layout of the entire FPGA chip circuit simulated in the EDA tool. In the FPGA chip circuit, the device has highly repetitive characteristics. Each block shown as a square includes a circuit module 401, and the circuit module 401 includes a plurality of devices. There may be the same circuit module 401 in each circuit module 401, and it should be understood that there will be circuit connections between the circuit modules 401. In this embodiment, in the lower left corner of all circuit modules 401 as a whole, the origin of coordinates (0, 0) is established, and the (X, Y) coordinate system is established to the right and upward respectively, and one circuit module 401 is used as a grid point to establish a grid. Point coordinate system, in this way, each grid point has its own grid point coordinates.

Refer to Figure 5. Figure 5 shows the structure of the internal netlist connection of a grid point in the FPGA chip as shown in Figure 4. Similarly, the lower left corner of the grid point is the origin (0, 0), and the right and upward directions are respectively established The (X, Y) coordinate system (herein referred to as the device coordinate system), in this way, each small device (device instance) inside the grid point has its own relative coordinates. Any device can be identified based on grid coordinates and device coordinates. The multiple small devices may be the start device 11, the end device 12, and so on.

S302: Establish circuit connection models for various types of circuit connections in FPGA chip circuits.

In this embodiment, the circuit connections of the same type are: the start device 11, the end device 12, the start port, the end port, and the circuit connections in which the relative positions of the start device and the end device are the same. A circuit connection model corresponds to a type of circuit connection. A circuit connection model includes: information about the starting device of a certain type of circuit connection, information about the end device, information about the start port, and information about the end port. Related information, the relative position of the starting device and the end device, and the coordinate information of the starting device of each circuit connection of the type in the FPGA chip circuit. Among them, the relative position of the starting device and the ending device is the coordinate offset of the ending device relative to the starting device, and the coordinate information of the starting device connected to each circuit is after processing the abscissa and ordinate of the starting device according to preset rules, An integer representing the coordinates of the starting device is obtained. Among them, in a circuit connection model, one starting device can be connected to multiple end devices through circuit leads, but multiple starting devices are not allowed to be connected to one end device through circuit leads. That is, each start device is connected to at least one end device through a circuit lead, and each end device is connected to one start device through a circuit lead. In this way, the uniqueness of the base point can be guaranteed, and the coordinates of the end device can be found based on the coordinates of the starting device and the coordinate offset. That is to say, the number of the starting device of any circuit connection corresponding to a circuit model is one, and the number of the end device of any circuit connection can be one or at least two. It should be noted that they belong to the same kind. The number of starting devices of each circuit connection of each type is the same, and the number of ending devices is the same.

Among them, the saving format of the circuit connection model can be as follows:

[NETVIEW BEGIN]

[DRIVERREF WL_OV(STRUCTUREREF(DEVICEREF DQS))0 0]

[LOADREF S_IY3(STRUCTUREREF(DEVICEREF CIM))4 2]

[DEVICE BEGIN]

8060928 8061417 10420224 10420713 1279520 1278009 15138816 15139305 17498112 17498601 20119552 20120041 22478848 22479337 24838144 24838633 27197440 27197929 29556736 29572225 27197929 1603231916521 334282557034275328

[DEVICE END]

[NETVIEW END]

The above is the data storage of a complete circuit connection model, where "WL_OV" in "[DRIVERREF WL_OV(STRUCTUREREF(DEVICEREF DQS))0 0]" is the starting port of this type of circuit connection, and "DQS" is the The starting device of the type circuit connection, "0 0" is the coordinate offset of the starting device of this type of circuit connection relative to the base point (because the base point is the starting device, it is "0 0"); "[LOADREF S_IY3(STRUCTUREREF(DEVICEREF “S_IY3” in CIM)) 4 2]” is the terminal port of this type of circuit connection, “CIM” is the terminal device of this type of circuit connection, and “4 2” is the relative base point of the terminal device of this type of circuit connection (Because the base point is the starting device, it is equivalent to the end device is equivalent to the coordinate offset of the starting device), "8060928 8061417 10420224 10420713 1279520 1280009 15138816 15139305 17498112 17498601 20119552 20120041 22478848 22479337 24838144160 165 572 197927197427 The integers in 3342825 34275328 34275817 5701632 5702121" are the coordinates of the starting device of each circuit connection of this type. There are 27 starting coordinates, so it is equivalent to 27 circuit connections of this type. The above example shows that there are 27 circuit connections using the circuit connection model. The circuit connection model describes the circuit connection from the WL_OV port of the DQS resource to the S_IY3 port of the CIM resource. The relative coordinates between them are The device where the start port WL_OV is located is the base point, and the coordinate offset of the device where the end port S_IY3 is located relative to the start device is X coordinate offset 4 and Y coordinate offset 2.

S303: Save the circuit connections in the FPGA chip circuit based on the circuit connection model.

Store the circuit connection models corresponding to all types of circuit connections in an intermediate file, so that the file describes all the circuit connection relationships of the entire FPGA chip. When the EDA tool loads the circuit wiring, you only need to load and build the wiring model from the intermediate file, and then all the circuit wiring of the FPGA can be loaded into the EDA tool.

When you want to use circuit wiring in the EDA tool, give port A on any device. Because the device is in the grid coordinate system, it has absolute coordinates relative to the entire FPGA device, and because port A is in The circuit wiring model with its own characteristics has been saved during construction. Therefore, when the circuit wiring connected to port A needs to be obtained, port A can be based on the absolute coordinates of the device where it is located and the start and end points in the circuit wiring model. To find the device information of other nodes in the circuit connection model, and then obtain the corresponding port information according to the node name, so as to construct the required circuit connection (device net).

Example three:

This embodiment also provides an FPGA system, as shown in FIG. 6, which includes a processor 601, a memory 602, and a communication bus 603. Wherein: the communication bus 603 is used to implement connection and communication between the processor 601 and the memory 602. The processor 601 is configured to execute one or more computer programs stored in the memory 602 to implement at least one step in the circuit connection saving method in the first embodiment and the second embodiment.

This embodiment also provides a storage medium that includes volatile or non-volatile memory implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules, or other data). Volatile, removable or non-removable media. Storage media include but are not limited to RAM (Random Access Memory), ROM (Read-Only Memory, read-only memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory Or other memory technology, CD-ROM (Compact Disc Read-Only Memory), DVD (digital versatile disk) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or can be used Any other medium that can store desired information and can be accessed by a computer.

The storage medium in this embodiment can be used to store one or more computer programs, and the stored one or more computer programs can be executed by a processor to implement the circuit connection saving methods in the first and second embodiments above. step.

This embodiment provides an FPGA system and storage medium. The storage medium is used to store one or more computer programs, and then the one or more computer programs are used to establish circuit connection models for various types of circuit connections in the circuit. In the same type of circuit connection, the start device, end device, start port and end port of multiple circuit connections are the same. The circuit connection model includes the information of the start port and the end port of a certain type of circuit connection. , The information of the starting device and the information of the ending device. That is to say, in this embodiment, a circuit connection model includes information related to one type of circuit connection, and each circuit connection in the circuit is saved based on the circuit connection model. In this way, compared with the existing In this embodiment, the circuit connection is classified based on the type of circuit connection, and the circuit connection is saved based on the type of circuit connection, which can save a lot of memory resources and improve user experience satisfaction. .

It can be seen that those skilled in the art should understand that all or some of the steps in the method disclosed above, and the functional modules/units in the device can be implemented as software (which can be implemented by computer program code executable by a computing device), Firmware, hardware and their appropriate combination. In hardware implementations, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may consist of several physical components. The components are executed cooperatively. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit .

The above content is a further detailed description of the embodiments of the application in combination with specific implementations, and it cannot be considered that the specific implementations of the application are limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, a number of simple deductions or substitutions can be made without departing from the concept of this application, which should be regarded as falling within the protection scope of this application.

Claims

A method for saving circuit connections, characterized in that it comprises:

Establish circuit connection models for various types of circuit connections in the circuit; in the same type of circuit connection, the start device, the end device of multiple circuit connections, and the start port and end port connected to the circuit connection are all The same; the circuit connection model includes the information of the start port, the information of the end port, the information of the start device and the information of the end device; the start device is the start point of the circuit connection A connected device, where the terminal device is a device connected to the terminal of the circuit connection;

Based on the circuit connection model, the circuit connections in the circuit are saved.
The method for saving circuit connections according to claim 1, wherein in the circuit connections of the same type, the relative positions of the starting device and the end device are the same.
3. The circuit connection preservation method according to claim 2, wherein the relative position information of the start device and the end device includes position offset information of the end device relative to the start device.
The circuit connection preservation method according to claim 2 or 3, wherein, according to the information of the starting device of any circuit connection and the relative position of the starting device and the end device of the circuit connection, Obtain the information of the end device connected to the circuit.
The circuit connection preservation method according to claim 2 or 3, characterized in that, according to the information of the terminal device of any circuit connection and the relative position of the starting device and the end device of the circuit connection, Obtain the information of the starting device connected to the circuit.
The circuit connection preservation method according to claim 2 or 3, wherein the circuit connection model comprises: information of the start port of the circuit connection of any type, information of the end port, and The relative position information of the starting device and the end device, and the information of the starting device.
The circuit connection preservation method according to claim 2 or 3, wherein the circuit connection model comprises: information of the start port of the circuit connection of any type, information of the end port, and The relative position information of the start device and the end device, and the information of the end device.
3. The circuit connection preservation method according to claim 2, wherein before the establishment of circuit connection models for various types of circuit connections in the circuit, the circuit connection preservation method further comprises:

Based on the specific layout of the circuit simulated in the electronic design automation tool, a coordinate system is established.
8. The circuit connection preservation method according to claim 8, wherein the circuit connection model includes the information of the starting point device, and the information of the starting point device includes the coordinate information of the starting point device.
The method for saving circuit connections according to claim 9, wherein the information of the starting point device comprises processing the abscissa and the ordinate of the starting point device based on a preset rule, and a result representing the starting point is obtained. Integer of device coordinates.
8. The circuit connection preservation method according to claim 8, wherein the circuit connection model includes information of the terminal device, and the information of the terminal device includes coordinate information of the terminal device.
The circuit connection preservation method according to claim 11, wherein the information of the starting point device comprises processing the abscissa and the ordinate of the ending point device based on a preset rule, and a result representing the ending point is obtained. Integer of device coordinates.
The method for saving circuit connections according to any one of claims 8-12, wherein the circuit includes a plurality of circuit modules; said establishing a coordinate system based on the specific layout simulated by the circuit in an electronic design automation tool, include:

Based on the specific layout of the circuit simulated in the electronic design automation tool, a grid point coordinate system is established according to the arrangement of the circuit modules.
The method for saving circuit connections according to claim 13, wherein the circuit module includes a plurality of devices; said establishing a coordinate system based on the specific layout of the circuit simulated in an electronic design automation tool includes:

Based on the specific layout simulated by the circuit in the electronic design automation tool, the device coordinate system is established according to the arrangement of the device.
The circuit connection preservation method according to claim 1, wherein each of the starting point device is connected to at least one of the end point devices through the circuit lead, and each of the end point devices is connected to one through the circuit lead. The starting device is connected.
5. The circuit connection preservation method according to claim 1, wherein the number of said starting devices of the plurality of said circuit connections of the same type is the same, and the number of said starting devices of the plurality of said circuit connections of the same type The number of end devices is the same.
5. The circuit connection saving method according to claim 1, wherein after the circuit connection in the circuit is saved based on the circuit connection model, the circuit connection saving method further comprises:

When constructing the circuit wiring belonging to the device, the circuit wiring of the device is constructed based on the circuit wiring model.
The method for saving circuit connections according to claim 1, wherein the circuit is a field programmable logic array FPGA chip circuit.
An FPGA system, which is characterized by comprising a processor, a memory and a communication bus;

The communication bus is used to realize the connection and communication between the processor and the memory; the processor is used to execute one or more computer programs stored in the memory, so as to implement any one of claims 1 to 10 The steps of the circuit wiring preservation method.
A storage medium, the storage medium stores one or more computer programs, and the one or more computer programs can be executed by one or more processors, so as to realize the one described in any one of claims 1 to 18 The steps of the circuit wiring preservation method.