JPH0223436A - Dump activating system - Google Patents

Abstract

PURPOSE:To prevent the destruction of a dump execution module and to output the contents of a storing part by automatically performing the dump execution when the address of a dump execution module is accessed by the malfunction at the time of the trouble with a processing part. CONSTITUTION:The upper limit and lower limit addresses of the dump execution module stored in a storing part 20 are set to upper limit and lower limit address registers 61 and 62. When a processing part 10 accesses the address in a dump execution module erroneously due to the malfunction, etc., at the time of the trouble except the dump execution activation by a dump activating switch 40, a logical value 1 is outputted from upper limit and lower limit address comparing circuits 71 and 72. Consequently, the activating input is given through an AND circuit 80, a latch circuit 90 and an OR circuit 100 to the processing part 10 and the dump execution is automatically performed. Thus, the destruction of the dump execution module is prevented and the contents of the then storing part are outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dump startup method, particularly a dump startup method in which all the contents of a storage unit in an information processing device are printed out or output to a magnetic disk device, etc. [Prior art] Conventionally, in this type of dump startup method, as shown in the diagrams for explaining the dump startup method in FIGS. 2 and 3, an information processing device connects a processing unit 10. Storage unit 20 and disk controller 3
1 is connected to the processing unit 10, and a dump start switch 40 is connected to the processing unit 10.
The disk controller 31 causes the disk 32 to record data on the bus. Further, the storage unit 20 has a configuration in which a dump execution module 21 is stored. When dumping the contents of the storage unit in such a configuration, by turning on the dump start switch 40, the processing unit 10 dumps the contents of the storage unit 20.
The dump execution module 21 stored in the storage section 20 is activated and executed to record all the contents of the storage section 20 onto the disk 32. Records on the disc 32 are printed out as necessary.

[Problem to be solved by the invention]

In the conventional dump startup method described above, the processing unit can access any address in the storage unit, and the processing unit may mistakenly retrieve the dump execution module stored in the storage unit due to a malfunction at the time of a failure. There is a risk of destruction, and the drawback is that the dump cannot be started if destroyed.

[Means to solve the problem]

The dump startup method of the present invention is a dump startup method in which a dump execution module is stored in a storage section, and upon dump startup from the outside, the processing section starts the module and dumps the contents of the storage section to an output device. a detection circuit for detecting that a processing unit has accessed an area in which a dump execution module is stored; and a logical sum means for determining a dump activation from both the detection output from the detection circuit and the dump activation from the outside. It is constituted by having.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, showing a case where the contents of a storage section are dumped onto a magnetic disk. It is also assumed that the dump execution module is stored in the same way as described in FIG. In FIG. 1, the processing unit 1
0. The storage unit 20 and the disk controller 31 are
As in the figure, it is connected to a data bus 51 and an address bus 52, and a disk 32 is connected to the disk controller 31. On the other hand, dump execution module 2
An upper limit address setting register 61 and a lower limit address setting register 62 are provided for setting the upper limit address 22 and lower limit address 23 of 1, and the address data of the address bus 52 and the contents of the upper limit address register 61 or the lower limit address register 62 Upper limit address comparison circuit 71 and lower limit address comparison circuit 72 which input
are provided, and when the address data is equal to or smaller than the setting value of the upper limit address 22, and when it is equal to or larger than the setting value of the lower limit address 23, the logical value is ``1°''.
It is designed to output . Furthermore, the outputs of these two comparison circuits 71 and 72 are input to an AND circuit 80,
The output of the AND circuit 80 is input to a latch circuit 90. In addition, the output of the latch circuit 90 and the dump start switch 4
The output of 0 is input to the OR circuit 100, and the OR circuit 10
The configuration is such that an output of 0 is given to the processing unit 10.

Next, proceeding with the explanation of the operation shown in FIG.
is set, and the processing unit 10 activates the dump start switch 4.
In addition to starting the dump execution with 0, if an address in the dump execution module 21 is accessed by mistake due to a malfunction at the time of a failure, the upper limit address comparison circuit 71 and the lower limit address comparison circuit 72 output a logical value of "1".
AND circuit 80. Latch circuit 90 and OR circuit 100
A dump start input is given to the processing unit 10 via
Dump execution is performed automatically.

〔Effect of the invention〕

As explained above, in the present invention, when the processing unit accesses the address of the dump execution module due to a malfunction at the time of a failure, etc., 5. Since the dump is executed automatically, the dump execution module is not destroyed, and the contents of the storage section at that time are output to the output device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 are diagrams for explaining a conventional dump starting method. DESCRIPTION OF SYMBOLS 10... Processing part, 20... Storage part, 21... Dump execution module, 22... Upper limit address, 23...
・Lower limit address, 31...Disk controller, 3
2...Disk, 40...Dump start switch, 51
...Data bus, 52...Address bus, 61...
- Upper limit address setting register, 62... Lower limit address setting register, 71... Upper limit address comparison circuit, 72
... lower limit address comparison circuit, 80 ... AND circuit,
90...Latch circuit, 100...OR circuit.

Claims (1)

[Claims] In a dump activation method in which a dump execution module is stored in a storage unit, and upon external dump activation, the processing unit activates the module and dumps the contents of the storage unit to an output device, the dump execution module is stored. A dump device characterized by having a detection circuit that detects that a processing section has accessed an area, and an OR means that determines that both the detection output from the detection circuit and the dump activation from the outside are a dump activation. Starting method.