JPH03105471A - Display system for logical simulation result - Google Patents

Abstract

PURPOSE:To facilitate operation for confirming logical simulation effect by moving display contents continuously and vertically or horizontally, and displaying them. CONSTITUTION:A result data storage part 2 is stored with the signal value of a logical simulation result, etc. A signal waveform generation part 3 generates a signal waveform from the logical simulation result data and a display method for the signal waveform is indicated on a keyboard 5 or with a mouse 6. A signal waveform display part 4 draws and displays the generated signal waveform and the display contents are moved continuously and vertically or horizontally and displayed. Consequently, the waveform can be moved automatically and continuously with a single-time movement indication and the operation for confirming the logical simulation result is facilitated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for controlling signal waveforms drawn on a display device in order to confirm the output results of a logic simulator used for verifying logic circuit designs such as LSIs. Regarding the display method.

[Conventional technology]

Conventionally, signal waveforms are drawn and displayed on a graphic terminal, etc. in order to check the output results of logic simulators used to verify logic circuit designs, but in order to display parts that are not displayed on the screen. In this case, the user issues a movement instruction to move the screen, but in this case, the screen is displayed in such a way that all or half of the screen content moves. In addition, in order to continue the movement, the user had to give movement instructions repeatedly.

[Problem to be solved by the invention]

The above conventional technology does not take into account continuous movement display, and in order to repeat movement, it is necessary to repeatedly give movement instructions, and since the range to be moved at one time is large, There was a problem that the display was not continuous. An object of the present invention is to display a signal waveform in which, once a movement instruction is given, continuous movement continues until there are no more objects to display, or until a stop instruction is given.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a logic design support apparatus having a display device that displays logic simulation results as signal waveforms. 1/
The image is displayed after being moved by about 20 degrees, and the moving display process is repeated.

[Effect]

In the present invention, in order to move the displayed content, the display target time is increased or decreased by about 5% for horizontal movement, and the state of the signal at that time is drawn in a waveform. For vertical movement, the display target is changed by one signal among the signals being displayed, and the waveform in that state is displayed. By repeatedly performing this movement display, it becomes possible to make it appear to the user as if the object is continuously moving.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of the present invention. This embodiment is an embodiment for a workstation. Reference numeral 2 represents a result data storage section, which stores signal values and the like of logic simulation results. Reference numeral 3 denotes a signal waveform generator, which generates a signal waveform from logic simulation result data.

Reference numeral 4 denotes a signal waveform display section, which draws and displays the created signal waveform. The keyboard 5 and mouse 6 give instructions on how to display signal waveforms. FIG. 2 shows a processing flow of movement display in the embodiment. Step 20 is a process for determining which direction the movement instruction is, and step 21
In order to move the display target time when the moving direction is left or right, the display start and end times are each changed by about 5%,
Increase or decrease processing is performed depending on whether it is on the left or right. Step 22 moves the display target signal down by one in order to move the display target signal when the moving direction is up or down.
Processing is performed to either move it up or move it up by J-numbers and move it down. Step 23 creates a signal waveform to be displayed based on the changed display target time or display target signal. Step 24 performs a process of drawing and displaying the created signal waveform. Step 25 is a process for determining whether to stop the moving display, and the moving display is stopped when a stop instruction is given or when there is no data to be displayed. Otherwise, the moving display is continued. FIG. 3 is an example of movement of the Shinchin waveform drawn and displayed on the display device of the 4+4 waveform display section 4 (FIG. 1), 31 is an example of the Shinchin waveform before movement, and 32 is an example of the Shinchin waveform before movement. , is an example of a slight movement to the left, where the woman is the movement distance, and this movement of a distance of 1p will be repeated.

〔Effect of the invention〕

According to the present invention, in the signal waveform display of the logical simulation 1 notation result, the waveform can be automatically and continuously moved by -times movement instructions, and the checking operation of the logical simulation result is facilitated.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a processing flow diagram of this embodiment, and FIG. 3 is an explanatory diagram showing an example of movement of a signal waveform displayed by this embodiment. DESCRIPTION OF SYMBOLS 1...Workstation, 2.Result data storage unit, 3...Shinchin waveform creation unit, 4...Signal waveform display unit, 5...Keyboard, 6...Mouse, 31...Movement Previous waveform, 32... Waveform after movement. Figure 1 Figure 1 Word 7 Sudeshi Peng Figure 2

Claims (1)

[Claims] 1. In a logic design support device that has a display device that displays signal waveforms, based on simulation result data output from a logic simulator, the displayed content is displayed by continuously moving it in any of the up, down, left, and right directions. A logical simulation result display method featuring: