JPS6143353A - Address tracking device - Google Patents

Abstract

PURPOSE:To store the address tracking results with a small capacity memory by storing the addresses obtained through tracking actions of an address tracking device in the corresponding address positions of a memory provided in the tracking device. CONSTITUTION:A display 1 is connected to a tracking device main body 5 with a video cord 4, and a CPU17 set on the main body 5 is clipped by a clip 16 attached at the tip of a cable 14 connected to the main body 5. Then the power supply is applied in the order of power supply switches 10, 18 and 3. When an execution switch 12 of the CPU17 is pushed, the address information on the CPU17 which is under execution is fetched by the main body 5 from the clip 16 via the cable 14 and stored in the position corresponding to the address information on a memory in the main body 5. Then a display switch 9 is pushed to deliver the information stored in the memory in the main body 5 to a display screen.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a central processing unit (hereinafter referred to as CPU) such as a microcomputer installed in an electronic circuit device.
The present invention relates to an improvement in a device for tracking the operating status of a vehicle.

(Prior Art) Conventionally, a tracking device that tracks the operating address of a CPU installed in an electronic circuit stores the address signal itself output from the CPU. Therefore, the amount of information handled by the tracking device is proportional to the number of bits of the address signal, and a large capacity memory is required to store all the address signals. Furthermore, in the case of a processing procedure that repeatedly executes a loop over a predetermined range of address values, the same information is accumulated for the number of times the loop is executed in order to know the executed address area, resulting in wasted information. There was a problem.

(Problems to be Solved by the Invention) An object of the present invention is to provide a tracking device that can store and check address information of all operating areas using a small memory capacity.

(Means for Solving the Problems) According to the present invention, the present invention includes a means for inputting an address in the memory of a CPU that processes money according to a processing procedure stored in the memory, and a self-memory, Address tracking g&-7 is obtained which stores predetermined information at the first location of the address.

(Example) Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 shows one embodiment of the present invention. l is the display body, 2 is the display screen, 3Fi display power switch, 4 is the video cord, 5 is the tracking device body, 6
Clear address information.

7 is a start address set switch, 8 is an end address set switch, 9 is a display start switch, 10 is a tracking device power switch, 11 is a numeric key, 12 is a CPU execution start switch, 13 is a CPU address value The indicated LED% 14 is the CPU of the tracked device
A cable that conveys operation information, 15 is the main body of the tracked device, 1
6 is the clip that holds the CPU, 17 is the CPU of the tracked device
U.

18 is a power switch of the tracked device.

With the power switch 3 of the display 1, the power switch 1O1 of the tracking device 5, and the power switch 18 of the tracked device [15] all in the OFF state, connect the display and the tracking device main body 5 with the video code 4, and connect the tracking device main body 5. Clip the CPU 17 on the tracked device main body 15 with the tip e of the cable 14 connected to the
0. l8.

Step 3: Turn on the power. In this state, nothing is displayed on the display screen 2Vζ. When the clear switch 6 is pressed, all tracking information in the tracking device 5 is erased.

For the memory range you want to run, press the start address switch 7 and enter the start address using the numeric keys 11. Similarly, the end address switch 8 is pressed and the end address is input using the numeric keys 11. These pressed numbers are displayed on the LED 13. When the execution switch 12 of the CPU 17 is pressed, the program specified by the start address to the end address is executed and stopped. The address under execution and the stop address are sequentially displayed on the LHD 13. Also, the address information of the CPU 17 during execution is
From the clip 16 to the tracking device body 5 via the cape #14
The address information corresponding to the address information tK in the memory in the tracking device main body 5 is stored and stored. Next, when the display switch 9 is pressed, the address of the memory in the tracking device main body 5 in which the high level signal is stored is outputted on the display screen 2 via the video cord 4.

A circuit example of this embodiment is shown in FIG. 21 is an input data switching unit, 22 is a memo for storing tracking results, 23
24 is an address signal group switching section; 24 is a signal control section; 31
32 is a bus for address signals from the tracked device, 33 is a bus for address signals to memory, 34 is a 1-bit mesori manual data line, and 35 is a 1-bit memory. Output data, 36 is an input data switching signal, 37 is a memory writing and reading signal line, 38 is an address switching signal line, 39 is a memory writing and reading signal line from the CPU of this tracking device, and 40 is a signal line for receiving data. Memory write and read signal lines from the tracking device, 41 are address trace start and end recognition signal lines used in this tracking device, and 42 are memory input data switching signal lines.

When the signal on the address tracking recognition signal line 41 becomes an end signal and address tracking is not being performed, the control section 24 outputs the address switching signal line 18 and causes the address switching section 23 to receive the address signal bus 31 on the CPU side. , and inputs the address signal from the CPU side to the message 22 as an address signal. Also, the memory write/read signal of the tracking device on the signal line 19 is signaled! In addition to fs17, a memory write/read signal is applied to memory 22.

When a write signal is applied to the signal line 19, the address of the CPU is written to the memory Y-22, and when a read signal is applied, the tracking result can be read to the output data $35. Further, the signal of the memory input switching signal line 22 is added to the input data switching control unit 21 via the input data switching signal line 36, and the mesori input data line 34 is designated as high level or low level and written to the memory 22. You can also do that.

The input data of this mesh input data line 34 is fixed at either a high level or a low level.

Next, before starting address tracking, the switching signal of the memory manual switching signal line 42 is applied to the input data switching control unit 21 via the switching signal R36 L7, and the memory input data line 1
Keep signal 4 at low level.

In this state, a low level signal is written throughout the memory 22. After the storage is completed, the switching signal of the memory input switching signal line 42 is applied to the input data switching control unit 14 via the switching signal llA 36, and the signal of the memory input data line 34 is set to high level. Thereafter, when a tracking start signal is applied to the address tracking start/end recognition signal line 21 to start the address tracking of the tracked device, the control unit 24 switches the address switching unit 23 to the tracked device side address via the address switching signal line 38. Switch to receive the signal bus 32,
It is input to the memory 22 via the address signal bus 33. In addition, the signal on the write/read signal line 40 is
In addition to the memory 22 via the read signal line 37, a high level signal from the input data @34 is written to the address location given from the address bus 33.

(Effects of the Invention) According to the present invention, since the address obtained by tracking the tracked device is stored in the corresponding address position of the memory in the tracking device, the tracking result can be stored in the capacity memory. It is also possible to directly confirm which part of the entire address area the addressed address is.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a schematic diagram of the circuit. l...Display body, 2...Display screen, 3...Display power switch, 4...Video code%5...Tracking device Main unit, 6...Address information clear switch, 7...Start address set switch, 8
...End address set switch, 9...
...Display start switch, 10...
・Tracking device power switch, 11... Number =?
-, 12...CPU execution start switch, 13
...LED indicating the address value of the CPU, 14.
... Cable that conveys CPU operation information of the tracked device, 15 ... Tracked device main body, 16 ...
- Clip that holds the CPU, 17...CPU of the tracked device, 18...Power switch of the tracked device, 21...Input data switching control unit, 22
... Memory, 23 ... Address switching section, 24 ... Signal control section, 31 CPU address signal bus in the tracking device, 32 ... From the tracked device Address signal bus, 33...Memory address signal bus, 34...Memory input data line,
35...Memory output data line, 36...Input data switching signal line, 37...Memory read and write signal line, 38...Address switching signal line, 39. ...Memory write and read signal line of the tracking device, 40...Memory write and read signal line of the tracked device, 41...
...Address tracking start/end recognition signal line, 42...
・・Memory input switching signal line

Claims (1)

[Claims] It is connected to a CPU that processes according to the processing procedure programmed in the memory, and stores the program according to the processing of the CPU. An address tracking device characterized by accumulating information.