JPS6278636A - Bus tracer - Google Patents

Abstract

PURPOSE:To facilitate the easy collection of data when a fault occurs on a bus by driving selectively a bus connection part to fetch the state of the bus in a system or device by a bus tracer. CONSTITUTION:When a bus 3 in an information processing system (processor) 4 is traced, a tracer part 9 delivers an active signal to a bus connection part 11 to secure an active state. Thus the part 9 can fetch the state of the bus 3 via the part 11 and a tracer bus 10. When a bus 7 of an information processing system (processor) 8 is traced, the part 9 delivers an active signal to a bus connection part 12 as well as to the part 11. Thus the parts 11 and 12 are set active and passive respectively. In such a way, the state of the bus 7 can be fetched via the part 12 and the bus 10.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an information processing system configured by connecting a plurality of packages via an internal system bus or an internal device bus, or an information processing system configured by connecting a plurality of information processing devices. The present invention relates to a bus tracer that allows the status of an intra-system bus or an intra-device bus to be recognized in a system or device.

[Conventional technology]

Traditionally, a system or device has consisted of one or more cages. However, recently, high-performance L
With the advent of SI, gate arrays, etc., the miniaturization of front-end modules constituting information processing systems or information processing devices is progressing at an accelerating pace. Therefore, information processing systems or information processing apparatuses in which one functional module is configured in one package and a plurality of packages are connected via an internal system bus or an internal bus have been attracting attention. Since each information processing system or information processing device with this configuration is composed of several functionally closed packages, it is possible to house a plurality of conventional information processing systems or information processing devices in one cage. On the other hand, since one information processing system or information processing device has a bus structure, each functional module is completely or almost on equal footing in terms of hardware, and functions such as a bus tracer are required to collect data in the event of a failure on the bus. Become.

[Problem that the invention seeks to solve]

In contrast to the above-mentioned conventional information processing system or information processing device configured with several packages, there is a problem in that having one bus tracer has a large impact both in terms of physical quantity and cost.

[Means for solving problems]

The bus tracer according to the present invention connects intrasystem buses or intradevice buses of an information processing system or information processing device via a bus connection part, selectively drives this bus connection part, and The internal bus status is captured in the bus tracer.

[Operation] According to the present invention, data can be easily collected when a failure occurs on a bus in an information processing system or an information processing device.

〔Example〕

The figure is a block diagram showing one embodiment of the bus tracer according to the present invention. In the figure, 1 and 2 are packages realized by, for example, one functional module, and 3 is an internal system bus or an internal device bus (hereinafter simply referred to as an internal system bus) connected between package 1 and package 2. ), 4 are packages 1 and 2. An information processing system or an information processing device (hereinafter simply referred to as an information processing system) consisting of an internal system bus 3, 5 and 6 are, for example, 1
7 is an internal system bus connected between packages 5 and 6, and 8 is a package realized by two functional modules. In-system bus 7
An information processing system consisting of 9 a tracer and 10
11 is a bus connection provided between the system internal bus 3 and the tracer bus 1°; 12 is a bus connection provided between the system internal bus T and the tracer bus 1o. 13 is a signal line connected between the tracer section 9 and the bus connection section 11; 14 is a signal line connected between the tracer section 9 and the bus connection section 12;
5 is the tracer section 9. Tracer bus 10. Bus connections 11 and 12. A bus tracer 16 consisting of signal lines 13 and 14 is connected to the information processing systems 4 and 8. This is a cage provided with a bus tracer 15.

Next, the operation of the bus tracer with the above configuration will be explained. First, under normal conditions, the tracer section 9 of the bus tracer 15 outputs parasitic signals to the bus connection section 11 via the signal line 13 and outputs them to the bus connection section 12 via the signal line 14, respectively. Therefore, this bus connection section 11
and 12 enter the sipat sheep state by inputting this parasitic signal. Therefore, the system bus 3
and the trace bus 10 are bus connection parts 1 in passive state.
Similarly, the internal system bus 7 and the trace bus 10 are insulated by the bus connection section 12 in a passive state. When performing a trace operation on the intra-system bus 3 of the information processing system 4, the tracer section 9 of the bus tracer 15 outputs an active signal to the bus connection section 11 via the signal line 13. The bus connection section 11 changes from the active state to the active state by inputting this active signal. Therefore, the tracer unit 9 checks the status of the system bus 3 by the bus connection unit 11 and the tracer bus 10.
can be imported via the system bus 3.
The state of the bus can be recognized and bus trace operations can be performed. Similarly, when performing a trace operation on the intra-system bus 7 of the w information processing i system 8, the tracer section 9 of the bus laser 15 outputs an active signal to the bus connection section 12 via the signal line 14, while The passive signal is output to the bus connection section 11 via the signal IJ13.

This bus connection section 12 is connected by inputting this active signal.
) The bus connection section 11 changes from the passive state to the active state, and the bus connection section 11 changes from the active state to the passive state by inputting this passive signal. Therefore, the tracer section 9 can receive the state of the system bus 7 via this bus connection section 12 and the tracer bus 10, so it can recognize the state of the system bus 10 and perform bus tracing operations. I can do it.

〔Effect of the invention〕

As explained above in detail, according to the bus tracer according to the present invention, by selectively driving the bus connection part,
Since the status of the system internal bus or device internal bus connected to the bus connection section can be captured into the tracer section, there is an effect that the impact on the system or device in terms of quantity and cost can be minimized.

[Brief explanation of drawings]

The figure is a block diagram showing one embodiment of the bus tracer according to the present invention. 1 and 2...Package, 3@...Internal system bus or device internal bus, 4...Information processing system or information processing device 5.5 and 6...Package,
7e*Conflict・Lotus in the system or bus in the device, 8φ-・
φ information processing system or information processing device, 9---tracer section, 10**@ψ tracer bus, 11 and 1
2 fists 1111Q bus connection section, 13 and 14...signal line, 150.・, Hastracer, 16・War・Cage.

Claims (1)

[Claims] In an information processing system configured by connecting multiple packages via an internal system bus or an internal device bus, or a system or device configured by connecting multiple information processing devices, an internal system bus or an internal bus of the information processing system or information processing device By providing a bus connection between the internal buses of the device and controlling this bus connection from the active state to the passive state or from the passive state to the active state by the tracer unit, the state of the system internal bus or the internal bus of the device can be changed to a bus connection. A bus tracer characterized in that input is made to the tracer part via the tracer part and the tracer bus, and the state thereof can be recognized.