JPS6090454A - Block transfer system - Google Patents

Abstract

PURPOSE:To attain the block transfer with high efficiency between two input/ output controllers different in transfer system by providing a system conversion input/output controller between said two controllers, and comparing the normal information counted values fed from both controllers with each other when the block transfer is over. CONSTITUTION:When a variable length block is transferred to an input/output controller B from an input/output controller A, a system conversion input/output controller P transmits the transfer preparatory request data 30 and a transfer preparatory request signal 31 to the controller B and receives the answer data 32 and an answer signal 33 from the controller B to confirm the end of preparation. Then the controller P transmits a transmission data request signal 34 to the controller A to obtain the transmission data 35 and a confirmation answer signal X as answers and replaces the counter for signal X. Then the controller P transmits the data 37 and a data transaction request signal 38 to the controller B to obtain a confirmation answer signal Y and renews the counter for signal Y. The count values of signals X and Y are compared with each other after the transfer is through with a prescribed number of blocks. Thus it is possible to confirm the normal transfer of blocks.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a block transfer method in an input/output control device of an information processing device. In particular, it relates to a block transfer method between input/output control devices designed using different input/output control methods.

[Description of prior art]

Conventionally, this type of device performs a confirmation operation using a control signal when transmitting and receiving data. Therefore, it is necessary to follow a complicated predetermined procedure, and there is a problem that the minimum time interval required for the sequence cannot be shortened. Furthermore, when block transfer is performed between devices using different transfer methods, the transfer is originally blocked within a closed system for each transfer method. In other words, it is designed so that when a block transfer is completed within one system, the data is passed to the other system and transferred to the opposing device of the other system. However, this has the disadvantage that the device is large and complex, and the transfer efficiency is also low.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly efficient method for transferring data blocks in the shortest possible time and reliably between devices with different input/output control methods.

[Features of the invention]

When performing block transfer between devices with different transfer methods, the present invention does not check whether the data is normal or abnormal for each individual data transfer sequence, but only counts normal notifications and counts the number when the transfer is completed. By introducing the concept of non-confirmed transfer, which checks the overall normality by checking the value, it is possible to realize a transfer device with a minimum configuration, and it is possible to perform simultaneous and highly efficient block transfer. This provides a transfer method that can be used.

That is, the present invention provides a method conversion input/output control device that performs block transfer control between devices having different input/output control methods under control from a central control system, wherein the input/output control device has a control signal driver and a control signal driver. When performing variable-length block transfer between input/output control devices A and B, which are opposing input/output control devices that are composed of a receiver, a data bus driver, a receiver, a memory, a control unit, etc. and have different transfer methods, the method described above is used. The conversion input/output control device sends transfer preparation request data and a transfer preparation request signal to the opposing input/output control device BIC to start transfer preparation, and confirms the response data and response signal from the opposing input/output control device B. After that, the transmission data is sent from the opposite input/output control device A to the opposite input/output control device B (at time g, the method conversion input/output control device sends a transmission data transmission request signal to the opposite input/output control device A, and After receiving the data and acknowledgment signal (X), the transmission data is placed on the data bus of the opposing input/output control device B, and the operation of turning on the transmission data take-back request signal is repeated for a specified number of times at a fixed period, and - Output control device B sends back an acknowledgment signal (Y) e every time data is received, and the system conversion input/output control device notifies normality of the acknowledgment signals (X) and (Y) within a certain period of time independently of the sending operation. It is configured to count, confirm the normality of the number of transfers, and then proceed to the termination operation.

Furthermore, when receiving data from the opposing input/output device B to the opposing input/output control device A, the method conversion input/output control device sends a received data transmission request signal to the opposing person output control device B, and confirms that the received data is juvenile data. After receiving the response signal (Y), the operation of putting the received data on the data bus of the opposing input/output control device A and turning on the receiving data reception request signal is repeated at a fixed cycle for the specified number of times, and the -blade opposing input/output is switched on. Control device A returns an acknowledgment signal (X) every time data is received, and the system conversion input/output control device counts the normal notifications of the acknowledgment signals (X) and (Y) within a certain period of time, independently of the reception operation. After confirming the normality of the number of transfers, it moves to the termination operation, performs normal or abnormal processing during the termination operation, and does not check the control signal during block transfer so that it will not be interrupted even if an error occurs midway. It is characterized by a confirmed transfer block transfer method.

[Explanation of Examples]

FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 shows the transmission sequence, and FIG. 5 shows the reception sequence. A control section 1 of the input/output control device A is coupled to a memory 2, and further includes a control signal output device 3 and a control signal input device 4.
, coupled to a data signal output device 5 and a data signal input device 6. The read output of the memory 2 is input to the data signal output device 5, and the output of the data signal input device 6 is input to the memory 2.

The output of the control signal output device 3 is the system converter output control device P.
The control (No. Data signal input device 9 and data signal output device I
Combines with O.

Control signal input device 7, control (iffff force output device 8-
The data signal input device 9 and the data signal output device M10 are coupled to the controller controller 11 and the counter 13.

Outputs between the central control system devices are input to the control device 11 .

The control device control section 11 is coupled to a control signal output device 14, a control signal output device 15, a Chi-tai g output device 16, and a data signal input device 17, and is connected to a memo+712.
join to. The data signal input device 9 is coupled to the data signal output device 16 via a memory 12 . The output of the data input device No. 8 [17] is coupled via the memory 12 to the data signal output device IO.

The output of the control signal output device 14 is input to the control signal input device 18 of the input/output control device B, and the control signal output device 19 in the above-mentioned B is coupled to the control signal input device 15.

The control signal output device 16, the data signal human power device 17, and the data signal output device 17 are both connected to one terminal of the data signal input device 20 and the data signal output device 21 in the human power control device B. The other terminal of the control signal input device 8, the control signal output device 19, the data signal input device 20, and the data (No. 8 output device 21) is coupled to the control section 22 in the input/output control device B. Input device 20 and data signal output device 2
1 is coupled to the control section 22 via a memory 23.

Next, the operation of the system of the present invention will be explained. Here, from the opposing human output control device A to the opposing human output control device B
The procedure for performing block transfer to variable 4 will be explained.

In the system conversion input/output control device P, the data signal output device 16 sends out transfer preparation request data 30 and the control signal output device 14 sends out a transfer preparation request signal 31 according to instructions from the control device control section 11 . After receiving the response data 32 and response signal 33 from the input/output control device B and confirming the completion of preparation, the control device control section 11 sends a transmission data sending request signal 34 to the input/output control device A.
As a response, transmission data 35 and confirmation response signal 36 (X
) is received, the transmission data is passed to the memo I 712, and the counter of the acknowledgment signal X is updated. Then, according to the instruction from the control device control section 11, the transmission data is passed from the memory 12 to the data signal output device 16, the transmission data 37 and the transmission data collection request signal 38 are sent out, and an acknowledgment signal 39 (Y) is received as a response. The counter of the acknowledgment signal 39(Y) is updated.

The above operation is repeated a specified number of times, and in parallel with n, the number of receptions of acknowledgment signals 36 (X) and 39 (Y) within a certain period of time is managed, and upon receiving the end signal 40 and transfer result data 41, the data is transferred. The block transfer is completed by checking the normality of the transfer together with the transfer result data 41.

In addition, from the opposing input/output control device B to the opposing input/output control device A
Block transfer can also be performed during reception to , similar to the above-mentioned transmission.

[Explanation of effects]

As explained below, by introducing the concept of unconfirmed transfer, the present invention enables block transfer between devices with different transfer methods using control signals with a minimum configuration, and also allows the bus between devices to If the quality is high, the number of retries due to errors will be small, and the number of block-by-block connection attempts will be reduced, allowing highly efficient transfer. Further, since the control signal confirmation operation is not performed during transfer, there is an advantage that the control section can be configured in a simplified manner.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an input/output control device to which the method of the present invention is applied. FIG. 2 is a transmission sequence diagram of the method of the present invention. ^at Ii'71 1-→ - crystal (= ka 140
し ゝn'+ -REL 、・） -nor ・
No F 1 included ^1.11.22...Control unit, 2.12
．． 23...Memory, 3.8.14.19...Control signal output device, 4.7.15.18...Control signal input device, 5.10.16.21...Data signal output device ,
6.9.17.20... Datai No. 100 human-powered device, 13
... Counter, A... Input/output control device, B... Input/output control device, P... Method conversion input/output control device, □□
□ -- Central control system device, 30 -- Transfer preparation request data, 31 -- Transfer preparation request signal, 32 -- Response data, 33 -- Response signal, 34 -- Transmission data sending request signal , A... Transmission data, 36... Confirmation response signal (X), 37... Transmission data, 38... Transmission data collection request (No. ii, 39... Confirmation response signal (Y), 4
0... End signal, 41... Transfer result data, 42.
...Receive key data transmission request signal, 43...Receive data, 44...Confirmation response key signal (Y), 45...Receive data, 46...Receive data receive request boost, 47...・・・
Acknowledgment signal (x). Patent applicant NEC Corporation Representative Patent attorney Takaji Ide 2 RoM 3 Ro

Claims (1)

[Claims] (1) In a system that performs block transfer of data between two input/output control devices connected to the same system and configured using different human output control methods, the data receiving side has a predetermined setting for the data to be transferred. Each block is provided with means for detecting whether the data is normal data, and means for transmitting the detection output of this means to the transmitting side, and the data transmitting side is provided with a means for detecting whether the data is normal data, and a means for transmitting the detection output of this means to the transmitting side. A block transfer method comprising: means for counting normal notifications; and means for comparing the count value of the counting means with the number of blocks of transmitted data after completing transmission of a large number of flocks.