JPH06342453A - Signal value display method for waveform editor - Google Patents

Abstract

PURPOSE:To deal with the editing/analysis of a waveform at a simulator with the high degree of freedom so that a designer can freely define the type of a signal (such as a character string, integer and real number or the like) by himself. CONSTITUTION:At a signal value plotting part 2, a correspondent signal value conversion rule table (b) is decided by extracting the signal type from signal value data (d) of the signal to be displayed. Further, the signal value to be displayed is retrieved from the signal value conversion rule table (b) corresponding to the signal type by extracting the signal value to be plotted and the time from the change point table of the signal value data (d), and plotting is performed just for the time in which the signal value is extracted with defined signal value display data (c). When the signal value display data (c) to be plotted show lines, the data are thinned out just for the time according to the definition of the designated lines, in the case of image data, the image data are enlarged/ reduced just for the time, in the case of a character string, the character string is plotted, and a rectangle surrounding it is plotted just for the time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal display method of a waveform editor, and more particularly to a signal of a waveform editor for creating / analyzing an input waveform or an output waveform for a simulation performed at the time of designing an electric circuit such as a functional simulation or a logic simulation. Regarding value display method.

[0002]

2. Description of the Related Art Conventionally, a signal value display method of this kind of waveform editor is used for displaying data of an external terminal pin of an integrated circuit on a display means, as disclosed in Japanese Patent Laid-Open No. 01-251171, for example. The input data of the test data can be easily checked by graphically displaying the test data corresponding to this pin in the form of waveform display.

[0003]

The signal value display method of the conventional waveform editor can display the signal value only by the signal value display built in the program. For example, VHDL (Very high speed integrated circuit). Hardwa
It is not possible to deal with the waveform editing / analysis of the simulator, which has a high degree of freedom, such as re Description Language), in which the designer can freely define the signal type (character string, integer, real number, etc.).

[0004]

A signal display method of a waveform editor according to the present invention is a signal defining a signal value data which is composed of a signal value and a time and which is a display target, and a signal value display type and detailed data for screen display. Value display data, a signal value conversion rule table that defines a magnitude relationship between the signal values and a conversion rule from the signal value to the signal value display data, a signal type that is a signal attribute, and each signal type A signal value conversion rule definition file that defines the signal value that can be taken and the signal value display data corresponding to each of the signal values, and the signal value conversion rule table from the specified signal value conversion rule definition file A signal value conversion rule creating unit that creates the signal value display data, and the signal value display data and the signal value display data by inputting detailed data items for screen display for the signal values. A signal value conversion rule correction unit that corrects the signal value conversion rule table, and searches the signal value conversion rule table from the signal values to be drawn in the signal value data to refer to the corresponding signal value display data. And a signal value drawing unit that draws the signal value on the screen by displaying the signal value.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. Referring to FIG. 1 which is a block diagram showing an embodiment of the present invention, in the signal value display method of the waveform editor according to this embodiment, the signal value data d is a display object consisting of a signal value and time. The signal value display data c defines a signal value display type and screen display detailed data. The signal value display types that can be defined are line (LINE), image (GRPH) and character string (CHR) data. For lines, you can select from the line types prepared internally, for images, you can define a bitmap format file that corresponds to the drawing system that corresponds to the signal value, and for character strings, you can specify the corresponding character string. Can be defined. The signal value conversion rule table b defines a size relationship between signal values and a conversion rule from signal values to signal value display data. The signal value conversion rule definition file a defines a signal type that is a signal attribute, a signal value that can be taken for each signal type, and signal value display data corresponding to each signal value. The signal value conversion rule creating unit 1 creates a signal value conversion rule table b and signal value display data c from the specified signal value conversion rule definition file a. The signal value conversion rule correction unit 3 corrects the signal value display data c and the signal value conversion rule table b by inputting the item of the detailed data for screen display for the signal value. The signal value drawing unit 2 searches the signal value conversion rule table b from the signal value to be drawn in the signal value data d, refers to the corresponding signal value display data c, and draws the signal value on the screen in the signal value display. .

Next, the operation of this embodiment will be described. Referring to FIG. 2 for explaining the data structure of the signal value display data c together with FIG. 1, the signal value display data c reads the signal value conversion rule definition file a in the signal value conversion rule creating unit 1 or converts the signal value conversion data. The rule correction unit 3 inputs the item of the detailed data for screen display corresponding to the signal value, so that it is created at the same time as the signal value conversion rule table b. When the signal value conversion rule definition file a is read by the signal value conversion rule creation unit 1, based on the signal value display type entered in the signal value conversion rule definition file a and the detailed data for screen display of that type. The signal value display data c is created. When the signal value conversion rule correction unit 3 corrects a signal value already defined, the signal value conversion rule table b and the signal value display data c are changed by newly defining the signal value.

A definition example will be described with reference to FIG. There are three types of signal values that can be defined: line, image, and character string. The line is defined by combining the type, thickness, color, and height from the line types that have already been prepared internally. The image defines a bitmap file name.
String defines a string. FIG. 2A shows line 1
It is an example of the signal value display data when the line is defined as (line type: solid line, thickness: 1, color: black, height: 1). FIG. 2B is an example of the signal value display data when the image is defined as the image 1 (bitmap format file: GRPH1). FIG. 2C is an example of the signal value display data when the character string is defined as the character string 1 (character string: UNSET).

Referring to FIG. 3 for explaining the structure of the signal value conversion rule table b together with FIG. 1, the signal value conversion rule table b is read by the signal value conversion rule creating unit 1 from the signal value conversion rule definition file a. The signal value conversion rule correction unit 3 inputs the item of the detailed data for screen display corresponding to the signal value, and is created at the same time as the signal value display data c. When the signal value conversion rule definition file a is read by the signal value conversion rule creation unit 1, the signal type name entered in the signal value conversion rule definition file a and the signal value that can be taken by the signal of that type name (character string, integer , Real numbers, etc.) and the signal value display data c corresponding to each signal value, and the signal value conversion rule table b is created. When the signal value conversion rule correction unit 3 corrects the signal value already defined, the signal value conversion rule table b and the signal value display data c are changed by newly defining the signal value.

The type name BIT of the signal will be described with reference to FIG.
A definition example of the signal value conversion rule table b of No. 9 will be described. BIT9 as the type name b1 of the signal value conversion rule table b
Is defined, and the signal value b2 that the signal of that type name can take
Are defined as U, X, 0, 1, Z, W, L, H and-. The magnitude relationship between the respective signal values follows the order in the table, and U becomes the largest and becomes smaller as X, 0. In the signal value display data b3 corresponding to the signal value, the line 1 is defined as the type of displaying the signal value 0. Signal value display data c corresponding to signal value 0
As a result, line 1 is created in the signal value conversion rule table b. With this, when a signal value of BIT9 type signal value 0 is drawn, drawing is performed by the signal value display of line 1.

In FIG. 3B, the signal type name is POSIT.
A definition example of the IVE signal value conversion rule table b will be described. P as the type name b4 of the signal value conversion rule table b
OSITIVE is defined, and the signal of that type name is defined as a possible signal value b5 up to an integer value range that the system can take. The magnitude relationship between the respective signal values follows the magnitude relationship of the numerical values. As the signal value display data b6 corresponding to the signal value, hexadecimal is defined as a type for displaying numerical values in the integer value range. As the type of display, in addition to hexadecimal display, decimal, octal, binary, etc. can be defined. When drawing the POSITIVE signal value, the numerical value is drawn in hexadecimal.

An example of definition of the signal value conversion rule table b in which the signal type name is REAL will be described with reference to FIG. REAL is defined as the type name b7 of the signal value conversion rule table b, and the real value range that the system can take is defined as the signal value b8 that the signal of that type name can take. The magnitude relationship between the respective signal values follows the magnitude relationship of the numerical values. In the signal value display data b9 corresponding to the signal value, a real number is defined as a type for displaying numerical values in the real value range. The type to be displayed can be defined as real number display or index display.
When drawing the REAL signal value, the numerical value is drawn in real number display.

FIG. 4 is a diagram for explaining the structure of the signal value data of this embodiment and the operation until it is drawn. A case of drawing the signal value of the signal name IN2 will be described with reference to FIG. First, the signal type d2 of the signal name IN2 is extracted from the signal value data d of the signal name d1: IN2, and the corresponding signal value conversion rule table b is determined. Further, the signal value and time to be drawn are extracted from the change point table d3, the signal value to be displayed is searched from the signal value conversion rule table b corresponding to the signal type d2, and the signal value is defined by the defined signal value display data c. Draw for the extracted time. If the signal value display data c to be drawn is a line, it is subtracted by the time according to the definition of the specified line, if it is image data, the image data is expanded or reduced by the time, and if it is a character string, a character string is drawn. The rectangle surrounding it is drawn for the amount of time.

[0013]

As described above, according to the present invention,
You can change the signal value display of the signal value data that has already been defined to another signal value display, and even if it is the signal value data that is the result of the functional simulation, the signal value display Can be drawn.
Furthermore, since the signal value display data can be switched from the outside, the signal value display data can be changed according to the user, so that the user can easily understand the data.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram illustrating a data structure of signal value display data according to this embodiment.

FIG. 3 is a diagram for explaining the structure of a signal value conversion rule table of this embodiment.

FIG. 4 is a diagram for explaining a structure of signal value data and an operation until it is drawn in this embodiment.

[Explanation of Codes] 1 signal value conversion rule creating unit 2 signal value drawing unit 3 signal value conversion rule modifying unit a signal value conversion rule definition file b signal value conversion rule table c signal value display data d signal value data

Claims (1)

[Claims] 1. A signal value data which is composed of a signal value and a time and which is a display target, a signal value display data defining a signal value display type and detailed data for screen display, and a magnitude relation between the signal values and the above A signal value conversion rule table that defines a conversion rule from a signal value to the signal value display data, a signal type that is a signal attribute, the signal value that can be taken for each signal type, and each of the signal values. A signal value conversion rule definition file that defines the signal value display data,
A signal value conversion rule creation unit that creates the signal value conversion rule table and the signal value display data from the specified signal value conversion rule definition file, and an item input of detailed data for screen display for the signal value By doing so, the signal value conversion rule correction unit that corrects the signal value display data and the signal value conversion rule table, and the signal value conversion rule table is searched from the signal values to be drawn in the signal value data to correspond. And a signal value drawing section for drawing the signal value on the screen by displaying the signal value display data.