KR940007831B1 - Method of executing the read instruction between rpu and cip - Google Patents

Abstract

The read command executing method includes the steps of: checking whether there are two read programs, if not, generating a read program, and if so, adding the read program to an RTE queue; sending the read program to a CCI (chip channel interface) module, if there is data in a terminal, transmitting the data, and if there is no data, checking a read-tid is registered; if it is registered, registering the read-tid in a CIP table data structure, checking the data is transmitted from the terminal, if it is transmitted, transmitting the data, registering a read-tid in the read-tid, checking whether the data is transmitted and transmitting the data using the read-tid, thereby improving data transmission speed.

Description

How to execute read command between RPU and CIP

1 is a flow chart of a general read command execution process.

2 is a flowchart of a conventional read command execution process.

3 is a hardware diagram to which the present invention is applied.

4 is a flow chart of a read command execution process of the present invention.

* Explanation of symbols for main parts of the drawings

70: RUP 71: UPU

80: IOP 81: CIP

92-99: Terminal 100: SBB Block

110: I / O Block

The present invention relates to a method of performing a read command between a main system of an administrative computer network and a terminal terminal device, and more particularly, to execute a read command between an RPU (Realtime Proccessing Unit) and a CIP (Communication Interface Precessor). In this case, the transmission latency is reduced, and the data transmission speed can be increased even if the number of terminals is increased.

A general read command execution method between the main system of the computer and the terminal is generally performed as shown in FIG. 1.

That is, the CCAM (Cip communication access method) module 10 of the Realtime Proccessing Unit (RPU) that controls and accesses the CIP is transmitted to the RTE queue (20), and the IOP (Input Output Processor) channel program 30 CIP (Cip Channel Interface) module 40 transmits data to terminal 50 using a read channel program.

In the process of processing a read command between such an RPU and a CIP, a single read channel program is generated 61, attached to an RTE queue 62, and an IOP channel program as shown in FIG. 2. Send to CCI module (63).

If the terminal checks (64) whether there is data to be sent and then reads the data, it jumps to the step (61) of generating one read channel program after data transfer (65). If not, it registers (68) the CIP table data structure. On the other hand, if the data is transmitted from the terminal (66), the read-tid is checked (67). If the data is registered, the data is transmitted (65) through the registration (68) of the CIP table data structure. Jump to As described above, the conventional read command is executed by sending one read channel program from the RPU to the CIP using the IOP channel program, and the terminal checks the read program sent from the RPU, and if there is a read program, the read command is executed to the terminal. Read data from. When the read command is completed, the CCAM module of the RPU sends the read channel program back to the CIP again and repeats this process to perform the read command. However, this conventional technique is used to transfer data from the terminal to the main system, which uses a single read program to perform a read command, and then create a read program in the RPU to execute the next read command. There is a problem of waiting for sending to the CCI module, especially when trying to transmit data from multiple terminals at the same time, there is a disadvantage that the longer the waiting time.

Accordingly, the present invention has been made to solve the above-mentioned general problems, and an object of the present invention is to reduce the waiting time during data transmission from the terminal to the main system, and to increase the data transmission speed while reducing the overload even if the number of terminals is large. It provides a method of executing a read command between an RPU and a CIP. Means for achieving the above object of the present invention is to add a read program to the two RTE queue in the CCAM module of the RPU, and to create a structure that can store two read programs in the CCI module in the data structure of the CIP table to store it If there is no data to be transmitted from the terminal, the read program is stored in the read-tide and the breed-tide. When the data is transmitted from the terminal, the read-tide and the tide-tide are transmitted. It is characterized in that the read program is added to the queue again in the CCAM module.

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

3 shows a block diagram of hardware to which the method of the present invention is applied. The basic configuration includes an SBB (System Building Block) block 100, an I / O block 110 for inputting and outputting data to and from the SBB block, and an SDB block for distributing terminal ports. (90).

The SSB block 100 is composed of an RPU 70, a user processing unit (UPU) 71, a memory 72, and a system building block interface board (SIB) 73.

The I / O block 100 includes an IOP 80 which is a control board of an input / output device, a CIP 81 supporting a communication port, a magnetic tape controller 82 controlling a magnetic tape, and a DDC (disk). Drive Controller (83).

The inside of the I / O block 110 is connected to each other by a TPI (Tolerant Peripheral Interface) line (84).

4 is a flowchart illustrating a control operation of the present invention, in which an additional routine is added to the CCAM module of the RPU 70 to add two or more read programs to the queue, and two read programs are added to the CCI module of the CIP 81. Routine to transfer data from terminal 92-99 to RPU 70. In addition, a logic for checking how many read programs have been added to the CCAM module of the RPU 70 when the read command is completed is sent to the routine that downloads the read program. This will be described according to the flow operation. When the operation is started 101, the CCAM module of the RPU 70 checks whether there are two read programs (102), if not two, generates a read program (103), and then jumps to step 102 of checking whether the read programs are two (102). If the two are added to the RTE queue (104). The read program in the queue sends down the channel program of the IOP 80 to the CCI module of the CIP 81 (105). In the CCI module, a structure capable of storing two read programs is stored in a data structure of a CIP table. The terminal 92-90 checks if there is data to send (206), and if so, transfers the data (107), jumps to step 102, and checks (108) if a read-tight has been registered. If the check 108 results in registration, the read program is registered in the read-tide of the CIP table data structure (109). If the terminal 92-99 checks whether there is data transmission (110), it transmits the read-tide use data (111), registers the breed-read (Bread-Tid) with the read-tide (1122). Jump to step 102 above. On the other hand, if it is not registered as a result of the check 108, the read-tight is registered in the CIP table data structure (113), and if there is data transmission in the terminal (114), the data is transmitted using the read-tide ( 115) and jump to step 102 above. As such, when data is sent from the terminal 92-99, data transmission is performed using read-and-bleed-tide. When the data transfer is completed, the CCAM module of RPU () adds the read program to the RTE queue (UPU-CPQ) again. As described above, since the present invention transmits data by using two read programs, the system is sufficiently compensated for the problems caused by data transmission by using a single read program, so that the waiting time between terminals is shortened and the terminal continues to increase. This has the beneficial effect of eliminating paralysis.

Claims (3)

1. Check (102) whether there are two read programs in the CCAM module of the RPU 70, otherwise generate the read programs and add them to the RTE queue (104); Sending to the CCI module using an IOP 80 channel program (105) and checking (106) if there is a data value at the terminal, thereby transmitting (107) data accordingly and checking if a read-tide is registered (108); If it is registered, register the read-tide in the CIP (81) table data structure (109) and check if there is data transmission in the terminal (110) .If it is, transfer the data using the read-tide and register the breed-read in the read-tide ( 113) and check (114) whether there is data transmission in the terminal and transmit data using the read-tide (115) sequentially to reduce the waiting time between terminals and improve the data transmission speed. How to execute read command between RPU and CIP. The method of claim 1, wherein at least two read programs are added to the CCAM module of the RPU (70). The CCAM module of any one of claims 1 to 2, wherein the CCAM module of the RPU 70 includes logic for checking how many read programs are dropped in a routine for downloading a read program. How to execute the read command.