CN101419642A - Apparatus and method for extracting device connection relation from netlist file - Google Patents
Apparatus and method for extracting device connection relation from netlist file Download PDFInfo
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- CN101419642A CN101419642A CNA2008102266339A CN200810226633A CN101419642A CN 101419642 A CN101419642 A CN 101419642A CN A2008102266339 A CNA2008102266339 A CN A2008102266339A CN 200810226633 A CN200810226633 A CN 200810226633A CN 101419642 A CN101419642 A CN 101419642A
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Abstract
The invention discloses a device for extracting the connection relationships among devices from net list files, comprising a net list file extracting unit, an information processing unit, a buffer unit and a file generating unit which are connected successively. The net list file extracting unit is used for extracting the net list files to be sent to the information processing unit. The information processing unit is used for analyzing and processing the net list files to obtain processing data to be sent to the buffer unit. The processing data comprise a network name and the name of at least one component which is connected with the network and pin connection information thereof. The buffer unit is used for buffering the processing data. The file generating unit is used for reading the processing data from the buffer unit to generate files for describing the connection relationship of the components.
Description
Technical field
The present invention relates to electric design automation---EDA (Electronic Design Automation) technical field, in particular a kind of apparatus and method from net meter file extraction device annexation.
Background technology
EDA is the abbreviation of electric design automation (Electronic Design Automation), comes from the concept development of computer-aided design (CAD) (CAD), computer-aided manufacturing (CAM), computer aided testing (CAT) and computer-aided engineering (CAE) in early 1990s.The EDA technology is an instrument with the computing machine exactly, the deviser is on the eda software platform, HDL finishes design document with hardware description language, then by computing machine completion logic compiling automatically, abbreviation, cut apart, comprehensively, optimization, layout, wiring and emulation, until work such as adaptive compiling, logical mappings and program downloads for the specific objective chip.The appearance of EDA technology has greatly improved the efficient and the measurability of circuit design, has alleviated deviser's labour intensity.
Net meter file is various eda softwares, for example multiSIM7 (latest edition of former EWB), PSPICE, OrCAD, PCAD, Protel, Viewlogic, Mentor, Graphics, Synopsys, LSIIogic, Cadence, MicroSim, ISE, modelsim or the like, whether a kind of a kind of file of describing annexation between central each components and parts of schematic diagram that generates utilizes net meter file verification device annexation to adhere to specification.
The form of net meter file is made up of two parts, and a part is the definition of element, and another part is the definition of network.Specific as follows:
The definition format of 1 element
Net list first defines employed element, and a typical element is defined as follows:
[; Element definition beginning
C1; The element mark name
RAD-0.3; The encapsulation of element
10n; The element note
]; The element definition finishes
The definition of each element all finishes with symbol " [" beginning is with symbol "] ".First row is the title of element, i.e. Designator information; The encapsulation of the second behavior element, i.e. footprint information; The third line is the note of element.
The definition format of 2 networks
The latter half of net table is employed network definition in the circuit diagram.Each network definition is exactly the point that electric connecting relation is arranged in the corresponding circuits.A typical network is defined as follows:
(; Network definition beginning
NetC2_2; The title of network
C2-2; Be connected to the sign and the pin number of the element of this network
X1-1; Be connected to the element sign and the pin number of this network
); The network definition finishes
The part of each network definition finishes from symbol " (" is with symbol ") "." the title of the first behavior network under (" symbol.Below several provisional capitals are element identifier and the pin number that are connected to all elements of this nexus.Represent that as C2-2 the 2nd pin of capacitor C 2 is connected on the network N etC2_2; X1-1 represents that the 1st pin of crystal oscillator X1 also is connected on this nexus in addition.
Net meter file has reflected the signal in the middle of the schematic diagram and the mapping relations (being also referred to as mapping table) of device as can be seen, the designer usually needs to be grasped this mapping relations in electronic design process, therefore the device annexation in the net meter file need be extracted, and then study the mapping relations that it reflects, yet regrettably, this net meter file that software generates is readable poor, the direct reading difficulty is bigger, the technician adopts the manual mode of copying the device annexation of contrast schematic diagram to study mapping relations in practice mostly at present, such manual operations seem time-consuming and error rate high, for the deviser has brought bigger obstacle.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of device from net meter file extraction device annexation at the deficiencies in the prior art, and a kind of method from net meter file extraction device annexation also is provided.
Technical scheme of the present invention is as follows:
The present invention at first provides a kind of device from net meter file extraction device annexation, comprises the net list file extracting unit, information process unit, buffer unit, the file generating unit that are linked in sequence; Described net list file extracting unit is used to extract net meter file, sends to described information process unit; Described information process unit is used for the analyzing and processing net meter file, obtains deal with data, sends to described buffer unit; Wherein, described handle packet includes network name and the title and the pin link information thereof that are connected at least one components and parts of this network, described buffer unit is used for the described deal with data of buffer memory; Described file generating unit is used for reading described deal with data from described buffer unit, generates the file of outlines device annexation.
Described device also comprises an input port that is connected with described net list file extracting unit, is used to receive the described device information or the described net meter file of outside input, sends to described extraction unit.
Described device also comprises a user input device that is connected with described input port, is used to import described device information or other steering orders.
Described device, wherein, described information process unit comprises filtration subelement and judgment sub-unit; Described filtration subelement is connected with described net list file extracting unit, be used for filtering described net meter file and the irrelevant information of described device annexation, and read the network name in the described net meter file and be connected in the components and parts title and the pin link information of this network, send to described judgment sub-unit; Described judgment sub-unit is connected with described buffer unit, is used for when the title of described network name, described components and parts and pin link information are preset value it being sent to described buffer unit as described deal with data.
The present invention also provides a kind of method from net meter file extraction device annexation, may further comprise the steps: A1, reception are also extracted net meter file, and analyzing and processing obtains deal with data, and it comprises the name information and the pin link information thereof of network name, device; A2, judge whether described deal with data is preset value, be then with its buffer memory, otherwise do not carry out subsequent step; A3, according to pre-seting order, the described deal with data of buffer memory is generated the file of describing described device annexation.
Described method wherein, is carried out following steps: A0 before the steps A 1, in schematic diagram, and the title and the pin title thereof of default device to be extracted generate described net meter file.
Described method, wherein, the steps A 0 concrete following steps of carrying out: by at least one eda software, in schematic diagram, the title and the pin title thereof of default device to be extracted generate described net meter file.
Described method, wherein, steps A 0 is carried out following operation: A01, is selected each device to be extracted, gives distinguished name; A02, select each device pin to be extracted, be its name; A03, generate described net meter file.
Described method wherein, in the steps A 01, for inhomogeneous device, is used different name nominatings; For similar device, use the same names name, and after this same names number consecutively, be used to distinguish each similar device.
Described method, wherein, steps A 2 is carried out following steps: A21, is read a line character; A22, judge that whether this character is network definition opening flag, otherwise abandon this character, continue execution in step A21; Be the network name that then keeps this sign back, the name information and the pin link information thereof of device; A23, judging whether net meter file ending, is then to stop to read execution in step A3; Otherwise continue to carry out A21.
Adopt such scheme, the present invention is by analyzing the net meter file structure, screen pack table information, extract device name information, the pin connection relation information that needs step by step, realization directly generates the stronger file of readability of an outlines device annexation from net meter file, be convenient to the designer and detect, verify and analyze, alleviate deviser's burden greatly, save cost of development.
Description of drawings
Fig. 1 is the synoptic diagram of embodiments of the invention 1;
Fig. 2 is the synoptic diagram of embodiments of the invention 2;
Fig. 3 is the process flow diagram of the inventive method.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Figure 1, the invention provides a kind of device from net meter file extraction device annexation, this device comprises net list file extracting unit 101, information process unit 102, buffer unit 103, the file generating unit 104 that is linked in sequence, also be that net list file extracting unit 101 is connected with information process unit 102, information process unit 102 is connected with buffer unit 103, and buffer unit 103 is connected with file generating unit 104; The user is when using this device, net list file extracting unit 101 is called the selected schematic diagram of establishing in this eda software of functional module process user automatically, generate net meter file, be stored in the certain path on the disk, net list file extracting unit 101 is handled for subsequent analysis according to this path extraction net meter file; Described information process unit 102 comprises filtration subelement 1021 and judgment sub-unit 1022, filtering subelement 1021 is connected with net list file extracting unit 101, judgment sub-unit 1022 is connected in filters between subelement 1021 and the buffer unit 103, be used to handle the net meter file that net list file extracting unit 101 is extracted, at first filter out the information that does not comprise the device annexation in the net meter file by filtering subelement 1021, grade such as the device definition part, read the remaining information that comprises the device annexation afterwards line by line, obtain network name and the components and parts title and the pin link information that are connected in this network, send to judgment sub-unit 1022, judgment sub-unit 1022 judges whether network name and the components and parts title and the pin link information that are connected in this network are preset value, if yes, then above-mentioned data are sent to buffer unit 103 buffer memorys; Buffer unit 103 is connected in information process unit 102 and file generating unit 104, is used for the metadata cache that information process unit 102 is obtained; File generating unit 104 is connected with buffer unit 103, be used to generate the file of outlines device annexation, file generating unit 104 reads the network name that is buffered in the buffer unit 103 and is connected in the components and parts title and the pin link information of this network, write in the new computer documents, obtain the file of outlines device annexation.For example, this document is TXT formatted file, XML formatted file or html format file.
Embodiment 2
As shown in Figure 2, the invention provides a kind of device from net meter file extraction device annexation, be with the difference of embodiment 1, this device has increased an input port, it is connected with described net list file extracting unit, be used to receive the described device information or the described net meter file of outside input, send to described extraction unit.For example, as shown in Figure 2, this input port is a user input mouth 100, user input mouth 100 is connected in net list file extracting unit 101, and the following needs of some situation are known the central part of devices annexation of schematic diagram, is at this moment just imported the name information of this part of devices by the user, 101 needs of net list file extracting unit extract the net meter file relevant with this part of devices name information and get final product, like this, reduce the system handles data volume, improve system handles efficient.
Another example is, a user input device can also be set be connected with user input mouth 100, by the user by this user input device, entering apparatus information or other instructions.For example, this user input device is a keyboard, hand-held entry terminal; Perhaps, the user input mouth is a USB port, and user input device is one to have the memory device of USB interface, and when user input device was connected with the user input mouth, net list file extracting unit initiatively read net meter file wherein.
Embodiment 3
The present invention also provides a kind of method from net meter file extraction device annexation, contains following steps.
A1, reception are also extracted net meter file, and analyzing and processing obtains deal with data, and it comprises the name information and the pin link information thereof of network name, device; Before steps A 1, can carry out following steps: A0, in schematic diagram, the title and the pin title thereof of default device to be extracted generate described net meter file.
Wherein, steps A 0 specifically can be carried out following steps: by above-mentioned at least one eda software, in schematic diagram, the title and the pin title thereof of default device to be extracted generate described net meter file.For example, steps A 0 can be carried out following operation: A01, select each device to be extracted, gives distinguished name; A02, select each device pin to be extracted, be its name; A03, generate described net meter file.Wherein, in the steps A 01,, use different name nominatings for inhomogeneous device; For similar device, use the same names name, and after this same names number consecutively, be used to distinguish each similar device.Like this, guaranteed that each device has different distinguished name, helped distinguishing different devices.
A2, judge whether described deal with data is preset value, be then with its buffer memory, otherwise do not carry out subsequent step; For example, steps A 2 can be carried out following steps: A21, read a line character; A22, judge that whether this character is network definition opening flag, otherwise abandon this character, continue execution in step A21; Be the network name that then keeps this sign back, the name information and the pin link information thereof of device; A23, judging whether net meter file ending, is then to stop to read execution in step A3; Otherwise continue to carry out A21.
A3, according to pre-seting order, the described deal with data of buffer memory is generated the file of describing described device annexation.For example, by the sequencing that receives described deal with data, the described deal with data of buffer memory is generated the file of the described device annexation of description.
As shown in Figure 3, it is the process flow diagram of a kind of embodiment of this method, the method comprising the steps of 301, step 302, step 303, step 304 and step 305, wherein step 301 is used to generate net meter file, when the user uses eda software to design, various eda softwares have all carried the net meter file systematic function, what the user need do is exactly default certain device and pin information thereof to be extracted in the middle of the eda software schematic diagram, be the name of device and pin simultaneously, generate net meter file afterwards, certainly in some cases because the user has obtained suitable net meter file, this step is just optional; Components and parts title and pin link information that step 302 is used for reading the network name of net meter file and is connected in this network, step 303 is used for whether device and pin information that determining step 302 obtains are certain device and the pin thereof that pre-sets, if not, it is not dealt with, if yes, then execution in step 304, above-mentioned network name and the components and parts title and the pin link information that are connected in this network are write buffer memory, execution in step 305 afterwards, according to particular order with above-mentioned network name, the title of device and pin link information write a new file, generate outlines device annexation file, above said particular order, can set in advance by system and be default conditions,, generate a new file such as being provided with from front to back or order from back to front according to the device order of connection.Automatically extract the file of outlines device annexation like this by net meter file, avoided manual loaded down with trivial details work of copying, avoided the manual drawback of makeing mistakes easily of copying simultaneously.
Embodiment 4
On the basis of embodiment 3, step 301 is preferably carried out as follows: select device to be extracted, the inhomogeneity device uses different name nominatings, and similar device uses the same names name, compiles sequence number successively behind each similar device name; Select device pin to be extracted, be its name, naming method can be selected arbitrarily, can use numeral, can use letter; Use eda software to generate net meter file afterwards.After the name, subsequent step is easier to discern this device and pin thereof like this.
Embodiment 5
On the basis of embodiment 3, step 302 is preferably carried out as follows: read the line character in the net meter file; Judge whether this character is the sign of network definition beginning, in the eda software, network definition beginning be masked as bracket " (", therefore " (" can learn whether the network definition begins only need to judge whether to occur bracket, if judged result is not, then abandon this character, continue to read the next line character; Judged result keeps network name, device name, the pin link information of this network definition opening flag back if yes; Judge whether the net meter file ending, for example, the NULI character string is netted the table ending exactly, and judged result then stops to read if yes; If judged result not, continues to carry out above-mentioned steps, end up up to net meter file.Like this, adopt and read net meter file line by line, and according to judged result the character string that reads is dealt with, the saving program improves program run efficient.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1, a kind of device from net meter file extraction device annexation is characterized in that, comprises the net list file extracting unit, information process unit, buffer unit, the file generating unit that are linked in sequence; Described net list file extracting unit is used to extract net meter file, sends to described information process unit; Described information process unit is used for the analyzing and processing net meter file, obtains deal with data, sends to described buffer unit; Wherein, described handle packet includes network name and the title and the pin link information thereof that are connected at least one components and parts of this network, described buffer unit is used for the described deal with data of buffer memory; Described file generating unit is used for reading described deal with data from described buffer unit, generates the file of outlines device annexation.
2, device according to claim 1 is characterized in that, also comprises an input port that is connected with described net list file extracting unit, is used to receive the described device information or the described net meter file of outside input, sends to described extraction unit.
3, device according to claim 2 is characterized in that, also comprises a user input device that is connected with described input port, is used to import described device information or other steering orders.
4, device according to claim 1 and 2 is characterized in that, described information process unit comprises filtration subelement and judgment sub-unit; Described filtration subelement is connected with described net list file extracting unit, be used for filtering described net meter file and the irrelevant information of described device annexation, and read the network name in the described net meter file and be connected in the components and parts title and the pin link information of this network, send to described judgment sub-unit; Described judgment sub-unit is connected with described buffer unit, is used for when the title of described network name, described components and parts and pin link information are preset value it being sent to described buffer unit as described deal with data.
5, a kind of method from net meter file extraction device annexation is characterized in that, may further comprise the steps:
A1, reception are also extracted net meter file, and analyzing and processing obtains deal with data, and it comprises the name information and the pin link information thereof of network name, device;
A2, judge whether described deal with data is preset value, be then with its buffer memory, otherwise do not carry out subsequent step;
A3, according to pre-seting order, the described deal with data of buffer memory is generated the file of describing described device annexation.
6, method according to claim 5 is characterized in that, carries out following steps: A0 before the steps A 1, in schematic diagram, and the title and the pin title thereof of default device to be extracted generate described net meter file.
7, method according to claim 6 is characterized in that, the steps A 0 concrete following steps of carrying out: by at least one eda software, in schematic diagram, the title and the pin title thereof of default device to be extracted generate described net meter file.
8, method according to claim 7 is characterized in that, steps A 0 is carried out following operation:
A01, select each device to be extracted, give distinguished name;
A02, select each device pin to be extracted, be its name;
A03, generate described net meter file.
9, method according to claim 8 is characterized in that, in the steps A 01, for inhomogeneous device, uses different name nominatings; For similar device, use the same names name, and after this same names number consecutively, be used to distinguish each similar device.
According to the arbitrary described method of claim 5 to 9, it is characterized in that 10, steps A 2 is carried out following steps:
A21, read a line character;
A22, judge that whether this character is network definition opening flag, otherwise abandon this character, continue execution in step A21; Be the network name that then keeps this sign back, the name information and the pin link information thereof of device;
A23, judging whether net meter file ending, is then to stop to read execution in step A3; Otherwise continue to carry out A21.
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| CNA2008102266339A CN101419642A (en) | 2008-11-18 | 2008-11-18 | Apparatus and method for extracting device connection relation from netlist file |
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| CNA2008102266339A CN101419642A (en) | 2008-11-18 | 2008-11-18 | Apparatus and method for extracting device connection relation from netlist file |
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| CN101833608A (en) * | 2010-05-20 | 2010-09-15 | 华为技术有限公司 | Processing method and device of PCB (Printed Circuit Board) data |
| CN102323964A (en) * | 2011-08-16 | 2012-01-18 | 北京芯愿景软件技术有限公司 | Digital circuit net list data processing method |
| CN103020357A (en) * | 2012-12-13 | 2013-04-03 | 迈普通信技术股份有限公司 | Checking method and device for circuit network topology matching |
| CN103400034A (en) * | 2013-07-26 | 2013-11-20 | 闫文闻 | Modularized circuit system and circuit module thereof |
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| CN103793565A (en) * | 2014-01-26 | 2014-05-14 | 深圳市兴森快捷电路科技股份有限公司 | Method for rapidly generating netlist |
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| CN102323964A (en) * | 2011-08-16 | 2012-01-18 | 北京芯愿景软件技术有限公司 | Digital circuit net list data processing method |
| CN102323964B (en) * | 2011-08-16 | 2014-06-25 | 北京芯愿景软件技术有限公司 | Digital circuit net list data processing method |
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| CN104142910B (en) * | 2013-05-10 | 2017-04-12 | 非凡互联（北京）传媒科技有限公司 | Air flow velocity data format conversion system and method |
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| CN103942079B (en) * | 2014-05-12 | 2017-06-20 | 张家港市复安电子科技有限公司 | Netlist builds and loading method and its system |
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| CN110619168A (en) * | 2019-09-11 | 2019-12-27 | 上海高性能集成电路设计中心 | Super-large-scale chip information analysis method based on netlist |
| CN110619168B (en) * | 2019-09-11 | 2023-08-11 | 上海高性能集成电路设计中心 | Ultra-large scale chip information analysis method based on netlist |
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