KR20000046375A - Pci bus search device with master and slave capabilities - Google Patents

Abstract

PURPOSE: A PCI bus search device with master and slave capabilities is disclosed to search signals that appear on PCI bus, to analyze current PCI bus's movements, to search PCI bus by itself and also under other process board's control. CONSTITUTION: A PCI bus search device with master and slave capabilities is composed of analyzation, memorization, and transmission. A processor(214) issues a command, which orders analyzation of a PCI bus(114)'s movement flow to a signal search controller(213). Upon receiving the command, a signal search controller, it gets a search memory(212) ready to store signal line's data and orders a bus connector(211) to read the PCI bus's data. The PCI bus data read by the bus connector is saved in the search memory and search memory informs the processor of reading PCI bus' data. The processor transmits data stored in the search memory to the key input department(215) and stored data is displayed on screen display and key input department's appointed indicator, which enables understanding of current PCI bus' movement state. If the device is operated as master requester capability, the user orders data transmission through screen display, key input department, and the processor to bus connector. The bus connector transmits data received from the processor to the PCI bus.

Description

A test board having functions of Requester and Responder for Peripheral Component Interface Bus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC bus (PCI) bus searching device having a master function and a slave function. In particular, signals appearing on a PCI bus that are widely used as an input / output bus (I / O bus) in a computer system having a multiprocessor structure are described. It's about a device that lets you search and analyze what the PCI bus is doing now.

1 is a block diagram of a conventional PCI bus search apparatus. Since the PCI bus search board 111 does not support a master function (RQ: Requester), a predetermined processor board 112 to perform a master function (RQ) is shown. Had to work with At this time, the master function (RQ) refers to a function that can search the PCI bus 113 by itself, and the slave function (RP: Responder) refers to a function that can operate only through the master function (RQ) of another processor board. it means.

That is, when searching for signal lines operating on the PCI bus 113 that is used as an input / output (I / O) bus in many computer systems, the conventional PCI bus search board 111 has only a slave (RP: RePonder) function. Yes, the Master (RQ: ReQuester) feature is not. This means that in order for the PCI bus search board 111 to examine the signals appearing on the PCI bus 113, the signals flowing on the PCI bus 113 must be controllable. The conventional PCI bus search board 111 can do this. It means you could not.

Therefore, in order to search for the PCI bus 113, the processor board 112 supporting the master (RQ) function has to be always mounted on the search target system. In addition, although the conventional PCI bus search board 111 can accept the transmission data on the PCI bus 113 (read operation), the PCI bus search board 111 may execute a predetermined command on the PCI bus 113. There was a problem that the transfer (write operation) function cannot be performed.

Accordingly, the present invention has been made to solve the above problems, by searching for the signals appearing on the PCI bus 113, and analyzes what operation the PCI bus 113 is currently operating, the PCI bus 113 by itself It is an object of the present invention to provide a PC bus (PCI) bus search device having a master function and a slave function that can perform a PCI bus search function under the control of another processor board.

In order to achieve the above object, a PCI (PCI) bus search apparatus having a master function and a slave function according to the present invention includes a predetermined display unit and key input means, and receives data received from the PCI bus. A screen display and a key input unit for displaying a display on the display unit or inputting a command to be transferred to the PCI bus through the key input unit; A bus connection unit connected to the PCI bus to read data from the PCI bus or to transmit data to the PCI bus; A search memory unit for storing data read from the bus connection unit or storing data to be output to the bus connection unit; A signal retrieval control unit which makes the search memory unit and the bus connection unit in operation state according to a predetermined activation command; The data received from the PCI bus to the search memory is transferred to the screen display and key input unit, or the command is received from the screen display and key input unit to send the activation command to the signal search controller. A processor unit for outputting predetermined command data to a search memory unit; And an RP / RQ control unit which sends a mode selection signal to the processor unit and controls to maintain a master function or a slave function.

1 is a block diagram of a conventional PCI bus search apparatus,

2 is a block diagram of a PCI bus searching apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

110: inspection target computer system 111: conventional PCI bus search board

112: processor board 113: PCI bus

210: PCI bus searching apparatus of the present invention

211: bus connection part 212: search memory part

213: signal search control unit 214: processor unit

215: display and key input unit 216: RP / RQ control unit

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

2 is a block diagram of a PCI bus search apparatus 210 having a master function and a slave function according to the present invention, and includes a bus connection unit 211, a search memory unit 212, a signal search control unit 213, and a processor unit 214. ), A screen display and a key input unit 215, and an RP / RQ control unit 216.

In this case, the RP / RQ control unit 216 sends a mode selection signal to the processor unit 214 to perform a function of selecting to maintain the RP function or the RQ function, and may be implemented as a programmable device.

The screen display and key input unit 215 includes a predetermined display unit (eg, an LCD display, a segment) and key input means (eg, a keyboard), and is a component that interfaces with a user.

That is, the data received from the PCI bus 113 is input through the processor unit 214 and displayed on the display unit so that the user can easily grasp the current operating state of the PCI bus 113. In addition, by inputting a command to be transmitted to the PCI bus 113 through the key input means, it provides a means for allowing the user desired data is output on the PCI bus 113.

The bus connection unit 211 is a component that is physically connected to the PCI bus 113 and reads data from the PCI bus 113 to the search memory unit 212 or receives data from the search memory unit 212. Output on the PCI bus 113.

At this time, the bus connection unit 211 operates under the control of the signal retrieval control unit 213, and the operation and the direction of the data are determined according to the enable signal sent from the signal retrieval control unit 213.

The search memory unit 212 is a component that stores data read from the bus connection unit 211 or stores data to be output to the bus connection unit 211.

At this time, the search memory unit 212 operates under the control of the signal search control unit 213, and whether the operation and the direction of data are determined according to the enable signal sent from the signal search control unit 213. In addition, when the data is received from the bus connection unit 211, the processor unit 214 notifies it so that the processor unit 214 can take the data.

The signal retrieval control unit 213 outputs an enable signal for operating the retrieval memory unit 212 and the bus connection unit 211 according to an activation command sent from the processor unit 214.

The processor unit 214 transfers the data received from the PCI bus 113 to the search memory unit 212 to the screen display and the key input unit 215. In addition, by receiving the command from the screen display and the key input unit 215 and sending an activation command to the signal search control unit 213, the search memory unit 212 and the bus connection unit 211 are enabled, and then the search memory unit ( Command data is outputted.

Now, the operation of the present invention consisting of such components will be described.

First, the processor unit 214 issues a command to the signal search controller 213 to analyze the operation flow on the PCI bus 113.

When the signal retrieval control unit 213 receives a retrieval command from the processor unit 214, the signal retrieval control unit 213 prepares to store the signal line data in the retrieval memory unit 212, and reads data on the PCI bus 113 to the bus connection unit 211. Command.

Now, the data on the PCI bus 113 read through the bus connection 211 is stored in the search memory unit 212, and the search memory unit 212 reads data from the PCI bus 113 to the processor unit 214. Inform them.

Finally, the processor unit 214 sends the data in the search memory unit 212 to the screen display and the key input unit 215, and is displayed on a predetermined display unit of the screen display and the key input unit 215, thereby allowing the user to present the current PCI. The operation of the bus 113 can be grasped.

Meanwhile, when the present invention operates as a master (Requester) function, the user instructs the processor unit 214 to transmit predetermined data to the bus connection unit 211 through the screen display and the key input unit 215, and the bus connection unit. In 211, the data transmitted from the processor 214 is transmitted to the PCI bus 113.

As described above, the present invention supports both the master (RQ: Requester) function and the slave (RP: Responder) function, thus eliminating the need for another processor board to perform the master function. In addition, since the PCI bus search apparatus of the present invention may issue a command to the PCI bus 113, or read data from the PCI bus 113, the inspection target system may be more easily inspected.

Claims (1)

A device mounted on a PCI bus of a predetermined computer system and inspecting an operating state of the PCI bus, comprising: a predetermined display unit and key input means for receiving from the PCI bus; A screen display and a key input unit for displaying the data on the display unit or inputting a command to be transferred to the PCI bus through the key input unit; A bus connection unit connected to the PCI bus to read data from the PCI bus or to transmit data to the PCI bus; A search memory unit for storing data read from the bus connection unit or storing data to be output to the bus connection unit 211; A signal retrieval control unit which makes the search memory unit and the bus connection unit in operation state according to a predetermined activation command; The data received from the PCI bus to the search memory is transferred to the screen display and key input unit, or the command is received from the screen display and key input unit to send the activation command to the signal search controller. A processor unit for outputting predetermined command data to a search memory unit; And And a RP / RQ control unit configured to send a mode selection signal to the processor unit to maintain a master function or a slave function.