JPH0573490A - Card classification identifying method - Google Patents

Abstract

PURPOSE:To recognize the card of the whole system by using slot No. with the master card of a local bus and identifying the card classification and its position of respective local cards. CONSTITUTION:A monitoring card 11 assigns slot No. through a system bus 1 to a master card 12. Next, the master card 12 assigns respectively slot Nos. 2-4 through a local bus 2 to respective local cards 13A-13C. Respective cards read and recognize the own slot Nos. Even when the reading of the slot No. may be performed by a reading circuit or may be performed by software. The master card 12 inquires the card classification corresponding to respective slot Nos. 2-4 through the local bus 2, and thus, the master card 12 can identify the card classification and its position of the local cards 13A-13C connected to the local bus 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card type identification method for identifying various cards connected to a bus line in a processor system.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show, for example, an Intel multibus.
FIG. 2 is a block diagram and a perspective view showing a conventional card type identification method and a physical connection form shown in the II (MULTIBUS II) bus architecture specification manual (issued by Intel in 1985). 1 is a system bus that is a motherboard for connecting each card, 21
Are monitoring cards for monitoring all cards connected to the system bus 1, and 22A to 22D are master cards connected to the system bus 1. Slot 0 to slot 4 are slot numbers assigned to each card. Is.

FIG. 5 shows the master cards 22A to 22 described above.
6 is a wiring diagram showing the connection of D to the system bus 1, FIG.
3 is an address bus composed of four signal lines AD1 * to AD4 *, and 4A to 4D are master cards 22.
The connection parts are connected to the latch parts A to 22D, and are sequentially connected to the signal lines AD1 * to AD4 *. 5 is a slot No. represented by 3 bits. No. for transmitting the slot number. It is a bus and each master card 22A
~ 22D is connected. Address bus 3, slot No. The signal from the monitoring card 21 is transmitted to the bus 5.

FIG. 6 shows the slot number. 3 is a timing chart showing a method of allocating a.

Next, the operation will be described. Surveillance card 2
1 is a master card 22A connected to the system bus 1
In order to recognize the card types of ~ 22D, it operates as shown in FIG. First, the slot number of FIG. Bus 00 "00
1 ”(slot No. 1) is output and the signal line A
D1 * is significant with "L". This "L" is the connection part 4A
Is added to the latch part of the master card 22A via
At this time, the master card 22A has the slot number. Bus 5
Take in the above "001" from this master card 2
2A is the slot number. Is given 1.

The monitoring card 21 similarly has a slot N.
o. "010", "011", "100" indicating 2 to 4
Are sequentially output, and the signal line AD2 * is correspondingly output.
~ AD4 * is sequentially set to "L". As a result, the master cards 22B to 22D have slot numbers. 2 to 4 are given respectively. The monitoring card 21 has a slot number.
Is given.

After that, the monitoring card 21 is replaced by the system bus 1.
Via each slot No. By inquiring about the card type for, the monitoring card 21 can identify and recognize the card type and the position of the master cards 22A to 22D connected to the present system.

[0008]

Since the conventional card type identification method is configured as described above, when a local card which is not directly connected to the system bus exists in the system, the card type cannot be known, and There was a problem that the physical position could not be recognized.

The present invention has been made to solve the above problems, and an object thereof is to obtain a card type identification method including a local card not connected to the system bus.

[0010]

In the card type identifying method according to the present invention, the master card of the local bus is slot number. Is used to identify the card type of the local card connected to the local bus.

[0011]

The card type identification method according to the present invention has a local bus and slot number. With this, the card type and position of the local card connected to the master card can be identified and recognized.

[0012]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, 1 is a system bus for connecting each card, 11 is a monitoring card for monitoring all cards connected to the system bus 1, 12 is a master card connected to the system bus 1, and 13A to 13C are A local card 2 that is locally connected to the master card 12 is a local bus that connects the master card 12 and the local cards 13A to 13C.

The wiring between the master card 12 and the local cards 13A to 13C in the local bus 2 is shown in FIG.
The same as in the case of. That is, Master Card 1
The slot number output from No. 2 Slot No. for transmitting signals indicating Nos. 2 to 4 A bus and signal lines of AD1 * to AD3 * are provided, and the latch units of the local cards 13A to 13C are sequentially connected to the signal lines AD1 * to AD3 *,
Each of the local cards 13A to 13C has a slot No. when its own latch becomes "L". Slot number on the bus. Is designed to capture.

Next, the operation will be described. First, the monitoring card 11 sends the system bus 1 to the master card 12.
By the conventional method described above via slot No. 1
To assign. Next, the master card 12 sends the slot numbers to the respective local cards 13A to 13C via the local bus 2. Assign 2-4. Slot numbers for the local cards 13A to 13C. Is also assigned by a method substantially similar to the conventional method.

Each card has its own slot number. Read and recognize. In addition, this slot No. Can be read by a reading circuit or software. Then, the master card 12 sends each slot number through the local bus 2. By inquiring about the card types corresponding to 2 to 4, the master card 12 can identify the card types of the local cards 13A to 13C connected to the local bus 2 and their positions.

For example, the master card 12 has a slot number of the local bus 2. Inquire by command what the 3rd card is. In response, the slot number. Card assigned to 3, ie, local card 13B
By only returning the response to the master card 12 via the local bus 2, the card type can be identified. As a result, the master card 12 has the slot numbers corresponding to the local cards 13A to 13C. A relationship of 2 to 4 can be obtained.

The master card 12 notifies the monitoring card 11 of this result via the system bus 1, so that the monitoring card 11 can identify and recognize the card type and the position of the card of the entire system.

Example 2. In the first embodiment, the slot number. Although the same allocation method as the conventional method is used, even if it is fixedly assigned to the mother board, the same effect as that of the first embodiment can be obtained.

[0019]

As described above, according to the present invention, the master card of the local bus has the slot number. using,
Since the card type of each local card and its position can be identified, even if there is a local card not directly connected to the system bus in the system, the card type and its position of the entire system can be identified and recognized.

[Brief description of drawings]

FIG. 1 is a block diagram of a card type identification method according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a physical connection form by the same method.

FIG. 3 is a block diagram of a conventional card type identification method.

FIG. 4 is a perspective view showing a physical connection form of the same method.

FIG. 5 is a wiring diagram of a system bus used in the method.

FIG. 6 is a timing chart diagram for executing the method.

[Explanation of symbols]

 1 System Bus 2 Local Bus 11 Monitoring Card 12 Master Card 13A-13C Local Card

Claims (1)

[Claims] 1. A processor system comprising a supervisory card and at least one master card connected via a system bus, and a master card and at least one local card connected via a local bus. Assign a slot number for identifying the card type to the above master card and local card,
The master card inquires the type of the local card corresponding to the slot number through the local bus using the slot number, and the master card notifies the monitoring card of the response result through the system bus. Card type identification method.