JPH07200422A - Information processor - Google Patents

Abstract

PURPOSE:To shorten a fault search time and to improve maintainability by transferring current fault information to a host device in a short period of time based on a request from the host device when an information processor gets out of order intermittently. CONSTITUTION:A special mode detection part 6 detects a special mode sent from the host device through a general purpose interface 200. A control part 3 receives the report from the special M-DO detection part 6, reads out control information stored in a storage part 7 through a data line 14 immediately, and transfers it to the host device through the general purpose interface 200. The storage part 7 holds plural pieces of control information on the general interface 200 and an ISDN interface 300 by the control part 3 at all times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device connected to a host device via a general-purpose interface, and more particularly to a failure processing system.

[0002]

2. Description of the Related Art In a conventional information processing apparatus of this type, as described in, for example, Japanese Unexamined Patent Publication No. 4-148447, the sequence of transmission / reception data in a general-purpose interface is checked, and the host apparatus and its own apparatus are checked. By reporting and displaying, data loss is detected and the time required to search for the cause of failure is shortened.

[0003]

In the conventional information processing apparatus of this type, when the information processing apparatus intermittently becomes unable to communicate with the host apparatus, it takes a lot of time to search for the intermittent failure factor.

[0004]

An information processing apparatus according to the present invention comprises a special mode detecting means for detecting a special mode from a host device via a general-purpose interface, a storing means for storing a control history, and the special mode detecting means. And a general-purpose interface control unit for controlling the general-purpose interface, and a driver / receiver for the general-purpose interface. And

[0005]

Embodiments of the present invention will now be described with reference to the drawings.

Referring to FIG. 1, an information processing apparatus 100 according to an embodiment of the present invention includes a driver / receiver unit 1,
General-purpose interface control circuit 2, control unit 3, ISD
It comprises an N control circuit 4, an interrupt control circuit 5, a special mode detection section 6, and a storage section 7.

Next, the general-purpose interface 200 (RS-
232C) via special mode (DR / CS / CD / R
The operation when all signals of X / ST2 / RT are valid for a certain time) is sent from the host device will be described.

The special mode from the host device is DR, CS, CD, R among the control signals in the general-purpose interface 200.
Each of the X, ST2, and RT signals is transmitted to the driver / receiver unit 1 in the information processing device 100 by holding the logical value "1" for a certain time or longer.

The driver / receiver unit 1 distributes the transmitted special mode to the general-purpose interface control circuit 2 and the special mode detection unit 6. The special mode detection unit 6 includes special modes (DR, CS, C) in the general-purpose interface 200.
Each signal of D, RX, ST2, RT is more than a certain time (10
0 ms or more) (a state in which a logical value “1” is held) is detected and reported to the control unit 3 via the control line 20.

Upon receiving the report, the control unit 3 discards the data received from the general-purpose interface control circuit 2 via the data line 11 (data within the time required for detecting the special mode), and via the control line 23. The general-purpose interface control circuit 2 is initialized. Subsequently, the control unit 3 reads out the data in the storage unit via the data line 14 and sends it to the general-purpose interface 200 via the data lines 11 and 10.

The control unit 3 can also send out the control data in the ISDN control circuit 4 and the data in the control unit.

The interrupt control circuit 5 transmits an interrupt signal to the control section 3 via the control line 22 every time the general-purpose interface control circuit 2 transmits / receives data. The control unit 3 that receives the interrupt signal (control line 22) receives the general-purpose interface 20.
Data is transmitted to 0 and data is received from the general-purpose interface 200.

In this way, the general-purpose interface 20
The information processing apparatus 100 instructed from 0 by the special mode is
This special code is detected by the special mode detection unit 6, and the control information in the storage unit 7 is sent to the general-purpose interface 200 under the control of the control unit 3.

The host device that has received the control information in the storage unit 7 can analyze the control information to investigate the cause of the special mode setting.

Since the host device can set this special mode at any time, it immediately sets the special mode when a failure occurs, and sucks up the control information immediately before the failure necessary for failure analysis from the information processing apparatus 100. By executing the analysis in a short time based on the sucked up control information, it is possible to shorten the failure cause search time.

[0016]

As described above, according to the present invention, when the information processing apparatus is intermittently judged to be a failure from the viewpoint of the host apparatus, the special mode sent from the host apparatus is detected and the information processing is immediately performed. The in-apparatus control information is sent (transmitted) to the upper apparatus, and the time required to search for the cause of the failure in the upper apparatus can be greatly reduced.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Driver / Receiver Unit 2 General Purpose Interface Control Circuit 3 Control Unit 4 ISDN Control Circuit 5 Interrupt Control Circuit 6 Special Mode Detection Unit 7 Storage Unit 100 Information Processing Device 200 General Purpose Interface

Claims (2)

[Claims] 1. A special mode detection means for detecting a special mode from a higher-level device via a general-purpose interface, a storage means for storing a control history, and a report in the special mode detection means for receiving a report from the special mode detection means. An information processing apparatus comprising: a control unit that transfers storage contents to the higher-level device; a general-purpose interface control unit that controls the general-purpose interface; and a general-purpose interface driver / receiver. 2. The special mode is characterized in that each signal of DR, CS, CD, RX, ST2, and RT in the general-purpose interface holds a logical value "1" for a certain time or more. The information processing device according to claim 1.