KR100192774B1 - Apparatus for identifying structure of memory in a computer system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory structure automatic recognition device for a high speed medium computer, comprising: a memory searcher for searching whether a predetermined memory module is mounted in a predetermined memory module mounting bank, and searching for the capacity of the mounted memory module; A state controller configured to set state information on the capacity of the mounted memory module and provide state information to the system control board according to a search result of the memory finder; A state controller for setting state information on the memory structure and providing state information to the system control board; An input controller for controlling the input with reference to the state of the state controller; An input queue for temporarily storing data input from the system bus according to the control of the input controller; A memory controller for controlling the memory module to store data of the input queue at a corresponding address if a service requested through a system bus is a memory write, and to read and output data of the corresponding address if a memory read; An output queue for temporarily storing the output of the memory module and outputting the output to the system bus in accordance with a control signal; And an output controller for controlling the output with reference to the state of the state controller according to the control of the memory controller.

Description

Automatic Memory Recognition System for High Speed Medium Computers

1 is a block diagram illustrating a typical multiprocessor system.

2 is a block diagram showing a conventional memory board.

3 is a block diagram showing a memory board according to the present invention.

4A and 4B are flowcharts illustrating operations of the memory board according to the present invention.

* Explanation of symbols for main parts of the drawings

1: System Bus 2: Processor Board

3: memory board 4: input / output control board

5: System control board 21, 31: Output controller

22, 32: state controller 23, 33: input controller

24, 34: memory controller 25, 36: input queue

26, 38: output queue 27, 37: memory module

35: Memory Finder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory board for storing data in a multiprocessor high speed medium computer using a system bus. In particular, the present invention relates to a memory module used for a memory board (eg, 1M DRAM, 16M DRAM, etc.) automatically. The present invention relates to a memory structure automatic recognition device that can recognize and facilitate system configuration.

In general, as shown in FIG. 1, a multiprocessor system includes a plurality of processor boards 2, a memory board 3, an input / output board 4, and a system control board 5 on a common system bus 1. Is configured to connect and exchange data.

As an example of the configuration as shown in FIG. 1, in a high-speed medium-size computer, the system bus 1 is a backplane bus that serves as a path for information transmission and is a HiPi ⁺ bus that is an improvement of the HiPi bus that is the system bus of the main computer II. Is a tightly coupled multiprocessor processor with a Pentium processor and cache memory and is capable of extending up to 10 boards on a shared bus. It is a board that stores up to 256M of memory capacity per board based on 16M of DRAM and can be mounted on the eutectic bus up to 8 cards. In addition, the input / output control board 4 is a board that is responsible for processing and passage role for efficiently processing data transmission between a large-capacity device such as a disk and a tape and a main memory device. It has a large buffer for temporary storage of transmission data with ROM and local RAM for storage. It can be extended up to 4 boards on a shared system bus and provides four SCSI-2 bus interfaces for block I / O devices. do. Although not shown, the system control board 5 serves as a processing and passage for efficiently processing data transmission between character input / output processing devices such as consoles, terminals, printers, communication devices such as LAN, WAN, and ISDN, and main memory devices. It also has ROM and local RAM that can embed device driver for control of text and communication input / output devices. It also has TODC and battery backup RAM as system-wide resources. These system control boards can be mounted up to two on a shared system bus and provide a VME64 bus interface for the connection of text and communication input and output devices. The character I / O and communication devices that can be connected to the VME64 bus here are Ethernet controllers, FDDI controllers, terminal controllers, X.25 controllers, ISDN controllers, and the like. The input / output control board 4 and the system control board 5 may be implemented on the same board in hardware, and may be selected as an option to perform a specific function.

The conventional memory board includes a memory module 27 having a fixed capacity and structure, as shown in FIG. A state controller 22 which allows the system control board 5 to set a state at system seperation; An input controller 23 for controlling an input by referring to a state of the state controller when a service is requested through the system bus 1; An input queue 25 for temporarily storing data input from a system bus according to the control of the input controller; A memory controller 24 for controlling the memory module 27 to store data of the input queue at a corresponding address if a service requested through a system bus is a memory write and to read and output data of the corresponding address if a memory read; An output queue 26 for temporarily storing the output of the memory module 26 and outputting the output to the system bus in accordance with a control signal; And an output controller 21 for controlling the output with reference to the state of the state controller under the control of the memory controller 24.

In this configuration, the computer system can use the memory board 3 by setting the state of the state controller 22 by the system control board 5 when the power is turned on. However, when the configuration of the memory module 27 of the memory board is diversified, accordingly, the setting state of the state controller 22 should also be variously changed.

In this configuration, a flow of operating a memory board in the related art is as follows.

First, when the system is powered on, the controllers 21, 22, 23, and 24 of the memory board initialize to default values, and wait for the system configuration setting by the system control board 5.

Secondly, the system control board 5 sets the state of the state controller 22 using the system bus.

Third, according to the state value of the state controller 22, each controller prepares to service the operation.

Fourth, when a service request is input through the system bus, the input controller 23 determines whether the service process is recognized by referring to the information of the state controller 22, and if the service process is recognized, the system enters the input queue 25. Have the bus communicate with you.

Fifth, the input queue 25 receives information from the system bus requests a service to the memory controller 24, the memory controller 24 receives the information from the input queue 25 and the state controller 22 to receive the service. Proceed.

Sixth, if it is a read service, the memory controller 24 terminates the service by transferring control information to the output controller 21 to output the service result on the system bus via the output queue 26.

However, the conventional memory board as described above, first, only supports a fixed memory configuration, and second, even when supporting a convertible memory configuration, the user must check the configuration state of the board, and third, after each user grasps the configuration state There is a problem that the configuration according to the need to proceed manually.

Accordingly, an object of the present invention is to provide a memory structure automatic recognition device for a high speed medium-size computer that automatically recognizes a mounting state of a memory module and facilitates system configuration.

In order to achieve the above object, the present invention provides a plurality of processor boards, memory boards, and system control boards connected to each other through a system bus so that the system control board manages the configuration of the entire system including a memory configuration. A system comprising: a memory finder for searching whether a predetermined memory module is mounted in a predetermined memory module mounting bank, and for searching the capacity of the mounted memory module; A state controller configured to set state information on a capacity of the mounted memory module and provide state information to the system control board according to a search result of the memory finder; An input controller for controlling an input by referring to a state of the state controller when a service is requested through a system bus; An input queue for temporarily storing data input from a system bus according to the control of the input controller; A memory controller for controlling the memory module to store data of the input queue at a corresponding address if a service requested through a system bus is a memory write, and to read and output data of the corresponding address if a memory read; An output queue for temporarily storing the output of the memory module and outputting the output to the system bus in accordance with a control signal; And an output controller for controlling the output by referring to the state of the state controller according to the control of the memory controller.

That is, in the related art, the memory module storing data is fixed by designing one memory module such as 4M DRAM or 16M DRAM, thereby fixing the configuration of the memory module. However, in the present invention, the memory module is arbitrarily selected (for example, 1M, 4M). , 16M, etc.).

Therefore, in the present invention, after identifying the state of the memory module 37 currently installed in the memory searcher 35 at the time of system configuration, the system variable can be easily set by automatically setting the state variable value.

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

1 is a block diagram of a multiprocessor system, and FIG. 2 is a block diagram illustrating a conventional memory board, as described above.

As shown in FIG. 3, the memory board according to the present invention is connected to a plurality of processor boards, a memory board, and a system control board through a system bus so that the system control board manages the entire system including a memory configuration. A multiprocessor system, comprising: a memory finder (35) for searching whether a predetermined memory module is mounted in a predetermined memory module mounting socket and for searching the capacity of the mounted memory module; A state controller 32 for setting state information on the capacity of the mounted memory module and providing state information to the system control board 5 according to a search result of the memory finder 35; Setting state information on a memory structure according to a search result of the memory finder 35 and sending state information to the system control board 5; An input controller 33 for controlling an input by referring to a state of the providing state controller 32 for which a service is requested through a system bus 1; An input queue 36 for temporarily storing data input from the system bus 1 according to the control of the input controller 33; A memory controller 34 for controlling the memory module 37 to store data of the input queue at a corresponding address if a service requested through a system bus is a memory write, and to read and output data of the corresponding address if a memory read; An output queue 38 for temporarily storing the output of the memory module and outputting the output to the system bus in accordance with a control signal; And an output controller 31 for controlling the output with reference to the state of the state controller under the control of the memory controller.

When the operation of the present invention configured as described above is described according to the flow shown in (a) and (b) of FIG.

First, when the power is turned on, each controller (state controller, input controller, output controller, memory controller) of the memory board initializes to the default values.

At this time, the conventional device waits for the system configuration setting to be completed by the system control board 5 after initialization, but in the device of the present invention, the memory finder 35 checks each memory module bank (socket), (37) Search the installation state.

First, as shown in (b) of FIG. 4, the memory finder 35 sequentially checks the memory module banks (sockets), which are places where the memory modules are mounted, and finds which banks the memory modules are mounted in. (112).

After finding out which memory module bank the module is mounted, a state variable value indicating this mounting state is generated (113) and set in a register (114).

As an example, if a memory module is currently installed in the first to fourth banks of a total of eight memory module banks, 11110000 is generated as a state variable and stored in an 8-bit register. At this time, the state in which the memory module is mounted is represented by the logic value '1' of the bit indicating the corresponding bank, and the state in which the memory module is not mounted is represented by the logic value '0'.

Now, the type of memory module mounted is determined (102), the total capacity of the currently mounted memory module is found (103), and set in a predetermined register used to store the memory capacity (104).

Subsequently, the memory finder 35 transmits a search result of the memory module to the state controller 32, and the state controller 32 transmits the state information of the input memory module (the bank in which the memory module is mounted and the state of the mounted memory module). Total capacity) and provide it to the input controller 33, the output controller 31, and the memory controller 34. The system control board (5) accesses the state controller (32) of the memory board through the system bus (1) to determine the state of the memory, to set the configuration of the system accordingly, and to additionally set necessary information to the state controller. do.

Subsequently, each controller prepares to operate according to the configuration information set in the state controller 32, and when a service request is input from the system, the input controller 33 refers to the information of the state controller 32 to determine whether service processing is performed. If it is determined that the service process is recognized, the control information is transmitted to the input queue 36.

At this time, the state controller 32 has information that can provide services for the memory of various structures, the input queue 36 received the information requests the service to the memory controller 34, the memory controller ( 34 receives the information from the input queue 36 and the state controller 32 to proceed with the service.

If it is a read service, the memory controller 34 transfers the information to the output controller 31 through the output queue 38 and outputs the service result on the system bus 1.

As described above, the memory board according to the present invention can use a memory module having various structures, and the structure can be set only by an automatic memory recognition device and a program when the memory structure is converted, so that the user does not need to make additional settings. It has a convenient effect.

Claims (1)

In a multi-processor system in which a plurality of processor boards, memory boards, and system control boards are connected through a system bus so that the system control board manages the entire system configuration including a memory configuration, a predetermined memory module mounting bank is provided. A memory finder 35 for searching whether a predetermined memory module is mounted and searching for a capacity of the mounted memory module; A state controller 32 for setting state information on the capacity of the mounted memory module and providing state information to the system control board 5 according to a search result of the memory finder 35; An input controller 33 for controlling input by referring to the state of the state controller 32 when a service is requested through the system bus 1; An input queue 36 for temporarily storing data input from the system bus 1 according to the control of the input controller 33; A memory controller 34 for controlling the memory module 37 to store data of the input queue at a corresponding address if a service requested through a system bus is a memory write, and to read and output data of the corresponding address if a memory read; An output queue 38 for temporarily storing the output of the memory module and outputting the output to the system bus in accordance with a control signal; And an output controller (31) for controlling the output by referring to the state of the state controller according to the control of the memory controller.