JPS61287298A - One-after-another connection system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] Connected to the central processing unit of an electronic 2 communication system,
In the intra-shelf chain connection of input/output control equipment, when a part of the bulk cage mounted on the shelf is removed for reasons of use, by short-circuiting the chain connection below the removed package. , which shortens the transmission delay time of control signals.

[Industrial application field]

The present invention relates to an improvement in the intra-shelf connection of an input/output control device connected to a central processing unit of an electronic communication system.

Connection methods for determining interrupt priority between a central processing unit and an input/output control unit include the normal octopus connection and the squirrel connection, which generally have a small number of signal lines and are easy to control.
Small-scale systems use imozuru connections.

However, in the case of a chain connection, each package sequentially relays the signal to the next device, so the signal propagation time between devices is longer than in the case of a chain connection, and part of the puff cage mounted on the shelf is When the signal is removed for reasons of use, it passes through a detour circuit, further delaying the signal transmission time, so there is a strong demand for countermeasures against this.

[Conventional technology]

FIG. 2 is a wiring diagram of the conventional imozuru connection method.

In FIG. 2, an acceptance notification signal 5 from the central processing unit 1 in response to a processing request from each input/output control device individual circuit to the central processing unit 1 is normally sent to the input/output control device shelf 2.
Puff cage 4 of input/output control device common circuit slot 20
0 and the input/output @ via the inter-package connection lines 91 to 95.
Package 41 for slots 21 to 25 for gutter device individual circuits
~To 45, 91 → 41 → 92 → 42 → 93 → 43 → 94
→44-95→45, and is further transmitted in the same manner to the input/output control device shelf 3 and beyond via the inter-package connection line 96.

In this case, if the package 45 is removed from the input/output control device individual circuit slot 25 of the human output control device shelf 2, the output of the inverter 75 changes from level 1 to level 0 because the ground terminal 65 loses air. Therefore, by the operation of the 3-state element 85, the acceptance notification signal 5 is transmitted to the inter-package connection line 95 as usual, and then the reception notification signal 5 is transferred to the 3-state element 85.
The signal is transmitted to the package in the input/output control device common circuit slot 30 of the human output control device shelf 3 via the inter-package connection line 96.

[Problem that the invention seeks to solve]

However, the package 43 can be further processed by the above-mentioned known method.
．． 44 is also removed, the reception notification signal 5 is transmitted to the inter-pancage connection line 93, and then sent to the inverter 73, as described above.
．． 74 changes from level 1 to 0. Therefore, the operation of 3-state elements 83 and 84 can transmit information to shelf 3 in this case as well, but the detour becomes 3 elements, 3-state elements 83 and 84.85, and the signal transmission There is a problem in that it takes a long time.

[Means for solving problems]

The above problem is that when the puff cage of the shelf is removed, it is always removed sequentially from the last slot to the front slot and the second slot, and the middle part is not removed, so the puff cage is connected in series with the output control terminal of the 3-state element. The ground voltage at the ground terminal is monitored by an inverter connected to the
This problem is solved by the chain connection method of the present invention, in which a short circuit is formed from the output side of the top three-state element in which no package is inserted to the inter-package connection line 96 of the next shelf.

[Effect]

That is, according to the present invention, when a package on a shelf is removed together with subsequent packages in the shelf, the inverter loses air, so that the output from the package one stage before is connected to the inter-package connection line. The input signal is transmitted to the next shelf by a short circuit that can be directly connected to the connection line between packages to the next shelf.The signal transmission time of the input signal is shortened, and the information processing function is improved. improves.

〔Example〕

The contents of the present invention will be specifically explained below with reference to embodiments shown in the drawings.

FIG. 1 is a wiring diagram of an example of the present invention, using a flexible connection method. Note that the same reference numerals indicate the same objects throughout the figures.

The difference between FIG. 1 and FIG. 2 is that each 3-state element 81
The point is that short circuits IO1 to IO105 are provided in which all of the output side wirings of IO1 to 85 are directly connected to the interpackage connection line 96 on the input side of the shelf 3 at the next stage.

In FIG. 1, an acceptance notification signal 5 from the central processing unit 1
is connected to the package 4o of the input/output control device common circuit slot 20 of the input/output control device shelf 2 and the package 41 of the input/output control device individual circuit slots 21 to 25 via inter-package connection lines 91 to 95. ~To 45, 91 → 4
1→92→42→93→43→94→44→95→45
The information is then sequentially transmitted to the input/output control device shelf 3 and others.

If the package 23 and below are all removed, the grounding terminals 63 to 65 will no longer have any air, so the inverters 73 to 75 will change from level 1 to 0, and the 3-state elements 83 to 85 will works.

Therefore, the acceptance notification signal 5 is immediately transmitted to the next input/output control device shelf 3 via the inter-package connection line 96 by the short circuit 103 provided on the output side of the three-state element 83 at the highest level.

Therefore, the signal transmission time is shortened, and the information processing function of the central processing unit is improved.

〔Effect of the invention〕

As explained in detail above, according to the present invention,
7 (7) When the package is removed together with the subsequent packages in the shelf, the signal transmission delay time to the next shelf can be minimized, and the information processing function can be improved.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention. Imozuru connection method wiring diagram, FIG. 2 shows a conventional known method. It is a wiring diagram of the imozuru connection method. In the figure, 1 is the central processing unit, 2.3 °I/O controller shelf, 20.30 is input/output control device common circuit slot, 21 to 25 are input/output control devices Slots for individual circuits, 40-45 are packages, 61 to 65 are ground terminals, 71 to 75 are inverters, 81 to 85 are 3-state elements, 91 to 96 are inter-package connection lines; 101 to 105 indicate short circuits.

Claims (1)

[Claims] A group of 3-state elements (81 to 85) connected in a one-to-one correspondence to a plurality of electronic device packages connected in a sequential manner.
and inverters (71-75) are provided in common for the shelf on which the electronic device package is mounted, and the inverters (71-75) connected in series with the output control terminals of the three-state elements (81-85) , a grounding terminal (61) provided for the electronic device package.
~65), and when the earth air disappears, the inverter (71~75) and the 3-state element (81~85)
An imozuru connection method characterized in that a short circuit (101 to 105) is formed by the operation of.