JPH0362133A - Initial diagnostic system for substrate mounting - Google Patents

Abstract

PURPOSE:To take a correct diagnosis by reading identification information on a back package substrate on the side of a mounted front substrate at the time of a system start-up and comparing it with the identification number of the front substrate, and diagnosing whether or not a correct couple of substrates are mounted. CONSTITUTION:When the system is started up, the ID information conversion part 15 of the back mounted substrate 13 is accessed through the decoder 26 of the front mounted substrate 12 which incorporates a microprocessor 12, etc., mounted in the same slot of a mother board 11 to read the proper identification number of substrate 13 out in series and store it in an ID information register 24. Then the microprocessor 21 diagnoses whether or not the combination of the substrate couple is correct from the correspondence relation between the contents of the register 24 and the identification number of the substrate 12 which is read out of a local memory 22. This diagnosis result is reported to the outside through an F/F 27 and an interface mechanism is controlled. This constitution which makes an automatic diagnosis without viewing enables the combination of the correctly mounted substrate couple to be diagnosed without an oversight or misdiagnosis.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention provides a method for mounting a pair of a front mounting board and a back mounting board in a pair of a front board mounting slot and a back board mounting slot of a board mounting chassis. This invention relates to an initial diagnosis method for board mounting that diagnoses the state of board mounting when the system is started up.

(Prior Art) In a system equipped with a board mounting chassis in which a plurality of pairs of front board mounting slots and back board mounting slots with the same slot number are formed, pairs of front mounting boards and back mounting boards constituting one functional product are used. must be correctly mounted in a pair of slots with the same slot number on the board-mounted chassis. However, conventionally, in the board mounting process, when a pair of a front mounting board and a back mounting board that constitute one functional product is to be mounted on a board mounting chassis, it is necessary to configure another functional product with respect to the front mounting board. Even if a back-mounted board (or a front-mounted board that constitutes another functional product) is incorrectly mounted on the back-mounted board, there is no mechanism to automatically detect the situation, and only a visual check is required. As a result, the reliability of the check results was low.

(Problems to be Solved by the Invention) As described above, conventionally, a pair of a front mounting board and a back mounting board mounted in a pair of a front board mounting slot and a back board mounting slot having the same slot number of a board mounting chassis is Since it was visually checked to see if it was a correct pair of substrates constituting one functional product, there was a high possibility that the visual check would be overlooked. Furthermore, if an incorrect combination of front mounting board and back mounting board is mounted and this fact is overlooked during a visual check, it will be Although some kind of abnormality occurs, it is difficult to recognize that this abnormality is caused by a basic implementation error, and it is difficult to recognize that the abnormality is due to a basic implementation error. In some cases, the interface mechanism between mating boards was destroyed.

This invention was made in view of the above circumstances, and its purpose is to configure one functional product in a pair of a front board mounting slot and a back board mounting slot with a 161-slot number formed in a board mounting chassis. To provide an initial diagnosis method for board mounting, which can correctly diagnose whether or not a correct combination of a front mounting board and a back mounting board pair is mounted at the time of system startup.

[Structure of the Invention] (Means for Solving 3W1) This invention provides a first identification information unique to the function of the back mounting board mounted in a back board mounting slot of a board mounting chassis in parallel. a first identification information registration means registered in a data format; and a system for converting and outputting the first identification information registered in the first identification information registration means in a serial data format to a predetermined output terminal of the back mounting board. In addition to providing a conversion means, a front mounting board mounted in a front board mounting slot of a board mounting chassis,
A second identification information registration means in which second identification information unique to the function of the front mounting board is registered in advance, and the front mounting board is paired with the front mounting board and mounted in the back board mounting slot of the board mounting chassis at the time of system startup. reading means for reading the first identification information in a serial data format from the converting means of the back mounted board and converting it into a parallel data format; and means for registering the first identification information read by the reading means and the second identification information. Based on the second identification information registered in The present invention is characterized in that it is provided with a discriminating means for discriminating whether or not the board is disposed of, and notifies the outside of the discriminating result of the discriminating means, and controls the interface mechanism between the pair of boards in accordance with the discriminating result. .

(Function) According to the above configuration, an incorrect pair of front mounting board and back mounting board is mounted in the same slot number (pair of front board firebox slot and back board mounting slot) of the board mounting chassis. Even if this is overlooked during a visual check, when the system is started up, the first identification information registered in the first identification information registration means of the back mounting board is read in serial data format on the front mounting board side. , this first identification information and the second identification information registered in the second identification information registration means of the front mounting board.
Based on the identification information, it is determined whether or not the identification information is unique to a board constituting a product with the same function, thereby correctly checking whether the board mounting is correct or incorrect. Moreover, since the results of this check are reported externally, it is easy to determine the cause of the abnormality at system startup.Also, since the interface mechanism between boards is controlled according to the check results, the IL will be reduced when the mechanism is destroyed. It becomes possible.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 11 is a motherboard of a board mounting chassis, 12 is a front mounting board mounted in a slot on the front side of the motherboard 11 (ie, a front board literary slot), and 13 is a back mounting board. When the back mounting board 13 is combined with the front mounting board 12 to form one functional product, the back mounting board 13 is placed in the slot where the front mounting board 12 is mounted! [.; Used by being mounted in a slot on the back of the corresponding motherboard 11 with the same slot number (ie, a back board mounting slot).

The back mounting board 13 includes an ID information registration means for registering identification information (hereinafter referred to as ID information) unique to the function of the board 13 in parallel data format, such as a switch (hereinafter referred to as ID switch). 14 and ID information registered (set) in this ID switch 14, which will be described later.
The ID information converter 15 converts the data into a serial data format in response to a D information read request signal. Back mounting board! 3 is also an input terminal IB for the ID information read request signal, and an ID converted and outputted from the ID information converter 15.
It has an information output terminal I7.

On the other hand, the front mounting board 12 forms the center when combining with the back mounting board 13 to form one functional product (module), and includes a microprocessor 21 that controls the entire module and a local memory 22. ing. The local memory 22 is an RO in which firmware programs etc. that define the operation of the microprocessor 21 are stored.
M, and a RAM (none of which is shown) that provides a work area for the microprocessor 21 and the like. ID information specific to the function of the front mounting board 12 is registered in advance in a predetermined area of the local memory 22 (ROM thereof).

I in the local memory 22 of this front mounting board 12
The D information and the ID information set by the ID switch 14 of the back mounting board 13 indicate that the front mounting board 12 and the back mounting board 13 constitute one functional product by combining these two boards. in case of,
- The characters are set so as to correspond to each other (for example, character information A and number 1, character information B and number 2, and character information C and number 3). However, it is also possible to make both ID information the same.

The front mounting board 12 also determines whether the back mounting board 13 mounted on the motherboard 11 in correspondence with the board 12 constitutes one functional product in combination with the same board 12. A status indicator for displaying, for example, an LED 23, an ID information register 24 for converting and holding the ID information output from the output terminal 17 of the back mounting board 13 through the motherboard 11 into a parallel data format, It has an interface driver/receiver 25 for outputting various interface signals a between the back mounting board 13 and the back mounting board 13. Further, the front mounting board 12 decodes the address information and control information given from the microprocessor 2i, and issues an ID information read request for the back mounting board 13, an ID information register read request for the ID information register 24, and an ID information register read request for the ID information register 24. In addition, a decoder 2B outputs various signals (in this case, an ID information read request signal S, a 10 information register read request signal C, an interface enable request signal d, etc.) for making enable control requests for the interface driver/receiver 25, etc. and an interface enable request flip-flop (hereinafter abbreviated as F/F) that is set/reset in response to the interface enable request signal d from the decoder 2B and generates an interface enable signal e that controls the interface driver/receiver 25. ) 27, an address latch register 28 for holding address information from the microprocessor 21, the microprocessor 21, local memory 22, LED 23, and ID information register 2.
4, and a data transceiver 29 for transferring data between the two. The front mounting board 12 further includes a local bus 30 for coupling the microprocessor 21, local memory 22, address latch register 28, data transceiver 29, etc., and local memory 22, L
A data bus 31 is used to transfer read/write data to the ED 23 and the ID information register 24, and an address bus 32 is used to transfer addresses to access the local memory 22, decoder 26, etc.
and a control bus 33 used for controlling the decoder 26 and the like.

Next, the operation of the configuration shown in FIG. 1 will be explained.

First, when the front mounting board 12 is mounted on the front side slot of the same slot number of the motherboard 11 of the board chassis and the back mounting board 13 is mounted on the back side slot, and the system is started up, the microprocessor 21 on the front mounting board 12 is installed. ROM of local memory 22 (not shown)
Front mounting board 1 registered in advance in a predetermined area of
The ID information specific to function 2 is read out via the local bus 30 and stored in the internal register of the microprocessor 21. After this, the microprocessor 21 is mounted on the back mounting board! In order to read the ID information specific to the function of the board 13 from 3, an ID information read request command is issued. When this ID information read request command is issued, the ID information converting section 15 on the back mounting board 13! 10 (input/output)
The I10 address for accessing the port (output terminal 17) is held in the address latch register 28 via the local bus 30, and is output from the register 28 onto the address bus 32, and the I10 address, which is one of the control information, is held in the address latch register 28 via the local bus 30. Read status information is output onto control bus 33 via local bus 30.

The I10 address on address bus 32 and the I10 read status information on control bus 33 are provided to decoder 26. The decoder 26 decodes the I10 address and I10 read status information, and sets (
An ID information read request signal consisting of a pulse train corresponding to the number of bits of registered ID information is output. This ID information read request signal is supplied to the input terminal 1B of the back mounting board 13 via the motherboard 11. rD information converter on back mounting board 13! 5 is the parallel data format ID set by the ID switch 14.
The information is converted into serial data in response to the ID information read request signal bE from the front mounting board 12 that is supplied to the input terminal 16. The serial data format ID information converted by the ID information converter I5 is output to the ID information register 24 on the front mounting board 12 via the output terminal 17 of the back mounting board 13 and the motherboard 11. The ID information read request signal from the decoder 26 is supplied to the ID information register 24, whereby the ID information in the serial data format from the back mounting board 13 is converted into parallel data in synchronization with the ID information read request signal. Converted ID
It is held in the information register 24.

In the above state, the microprocessor 21 attaches a fixed I to the back mounting board 13 held in the ID information register 24.
In order to read the D information, an ID information register read command is issued. When this ID information register read request command is issued, the I10 address for accessing the I10 port of the ID information register 24 is held in the address latch register 28 via the local bus 30,
The same register 28 outputs the address bus 32, and I10 read status information is output to the local bus 32.
The signal is output onto the control bus 33 via the control bus 33. The decoder 26 decodes the I10 address and I10 read status information and outputs an active ID information register read request signal C.

This register read request signal C is sent to the ID information register 24.
This causes the ID information register 24 to enter the output enable state. As a result, the ID information register 24
Read ID from back mounting board 13 held in
Information is transferred via data bus 31 and data transceiver 29 to local bus 30 and read by microprocessor 21.

When the microprocessor 21 reads from the local bus 30 the ID information unique to the function of the back mounting board 13 that has been read into the ID information register 24, the microprocessor 21 reads the same ID information and the ID information from the local memory 22 first and holds it in the internal register. The front mounting board I kept! It is compared with the ID information specific to the second function to check whether these image information have a predetermined correspondence relationship. If the above image information has a predetermined correspondence relationship, the microprocessor 2
1 determines that the pair of front mounting board 12 and back mounting board 13 that constitute one functional product are correctly mounted in the slot pair with the same slot number of motherboard +1, and sends data indicating that the mounting is normal. It is transferred via transceiver 29 and data bus 31 to LED 23 for a corresponding status display. At this time, the microprocessor 21 issues an interface enable request command to enable the interface driver/receiver 25 on the front mounting board 12. When this interface enable request command is issued, the 110 port for accessing the I10 port of the interface driver/receiver 25 is
The address is held in the address latch register 28 via the local bus 30 and output from the register 28 onto the address bus 32, and I10 write status information is transferred via the local bus 30 to the control bus 33.
is output above. The decoder 2B decodes the I10 address and I10 write status information and outputs an active interface enable request signal d. This interface enable request signal d is F/
It is supplied to F27, which sets F/F27.

When F/F 27 is set, interface enable No. 13 e becomes active, and input/output operations of interface driver/receiver 25 are permitted.

As a result, the interface signal a can be exchanged between the front mounting board 12 and the back mounting board 13.

On the other hand, if there is no predetermined correspondence between the ID information of the front mounting board 12 and the ID information of the back mounting board 13, the microprocessor 21 will It is determined whether the pair of mounting board 12 and back mounting board 13 is not a correct combination of boards, and an abnormality status indicating that the mounting is abnormal is transferred to the LED 23 via the data transceiver 29 and data bus 31 to take appropriate action. Display the status. Also, at this time, the microprocessor 21 maintains the driver/receiver 25 in the deimople state.

In the above embodiment, a case has been described in which the ID switch 14 is used as the ID information registration means on the back mounting board 13 side, but it is also possible to use a ROM instead of the ID switch 14, for example. Similarly, on the front mounting board 12 side, the local memory 221;
Instead of registering ID information, use a switch to register ID information.
It is also possible to register (set) information.

[Effects of the Invention] As detailed above, according to the present invention, an incorrect combination of a front mounting board and a back mounting board is mounted in the slots χ and l of the same slot number of the board mounting chassis. Even if this is overlooked during a visual check, when the system is started up, identification information unique to the function of the front mounting board is read from the board, and this identification information and the function of the front mounting board are read from the front mounting board. By determining whether or not the unique identification information is the unique identification information of a board constituting the same functional product, it is possible to accurately check whether the board mounting is correct or not. Moreover, since the results of this check are reported externally, it is easy to determine the cause of the abnormality during system startup, and since the interface mechanism between boards is controlled according to the check results, it is possible to prevent damage to the mechanism. becomes. Furthermore, since the identification information on the back literary board side is converted into a serial data format and transferred to the front mounting board side, the number of signal lines required for the identification information transfer can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 11... Motherboard (motherboard of board mounting chassis), 12... Front mounting board, 13... Back mounting board, 14... ID switch (first identification information registration means), I5... ID information Conversion unit (conversion means), 2
DESCRIPTION OF SYMBOLS 1... Microprocessor, 22... Local memory (second identification information registration means), 23... LED (external notification means), 24... ID information register (reading means), 25... Interface Driver receiver (
interface mechanism), 2G...decoder, 27...
-F/F (interface enable request flip-flop).

Claims (1)

[Scope of Claims] In a system in which a pair of a front mounting board and a back mounting board constituting one functional product are mounted in a pair of front board mounting slot and back board mounting slot having the same slot number of a board mounting chassis, The back mounting board includes a first identification information registration means in which first identification information unique to the function of the back mounting board is registered in a parallel data format, and the first identification information registered in the first identification information registration means. A conversion means is provided for converting and outputting the identification information in a serial data format to a predetermined output terminal of the back mounting board, and second identification information unique to the function of the front mounting board is registered in advance in the front mounting board. and the conversion of the back mounting board mounted in a back board mounting slot that is paired with a front board mounting slot of the board mounting chassis into which the front mounting board is mounted at the time of system startup. reading means for reading the first identification information from the means in a serial data format and converting it into a parallel data format; and reading the first identification information read by the reading means and the second identification information registered in the second identification information registration means. Based on the identification information, the pair of the front mounting board and the back mounting board mounted in the same slot number as the front mounting board are identified as the above 1.
a determining means for determining whether or not the product constitutes a functional product; an external notification means for notifying the outside of the determination result of the determining means; an interface control means for controlling an interface mechanism used for transmitting and receiving interface signals between the mounting board and the back mounting board mounted in the same slot number, and correct front mounting in the same slot number of the board mounting chassis. An initial diagnosis is made to determine whether or not a pair of the board and the back mounting board are mounted at the time of system start-up, the initial diagnosis result is notified to the outside, and the above-mentioned interface mechanism is controlled according to the initial diagnosis result. This is an initial diagnosis method for board mounting.