SU1386994A1 - Multichannel priority device for connection to pipeline - Google Patents

Abstract

The invention relates to computing and can be used in multi-machine and multiprocessor computing systems. The purpose of the invention is to reduce the amount of equipment. Each channel of the multichannel priority device contains AND 6-8 elements, triggers 9 and 10, drivers of 12 pulses and a delay element 11. The device allows the organization of the connection of channels to the common trunk in accordance with the priorities of the channels. Triggers 9 and 10 record the end of the selection stage of the most priority channel from those that were simultaneously requested. Elements 6 and 8 provide blocking of request signals at each stage, which excludes the possibility of simultaneous connection of several channels to a common highway. 1 il.

Description

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: The invention relates to computing: technology and can be applied, in input devices, information transfer, multi-machine and multiprocessor computing output trigger 10 through the information output 13 of channel 4 signals the corresponding computer that OM is captured and transmission of information complexes can be started , using for ob-5atsii. At the same time, the logic signal “Data exchange” common line (ohm) .s of zero output of trigger 10 through the signal output 2 of the device closes the elements AND 8 in all channels .4 and if the signal is on element 11) than at channel 4i, then they (attempts) blocked. After the computer connected to channel 4i completes the transfer of information, it is the end of the invention - reducing the amount of equipment.

I The drawing shows a structural scheme of an attempt to seize the device.

 The device contains signal outputs priority lower (longer delay time 1-3, channels 4, each of which includes a request input 5, elements AND 6-8, triggers 9 and I), delay element 11, a driver 12 pulses and information output 13.15 pours on request input 5 of its

The device operates as follows. A logical signal channel “O. By

In the initial state, the flip-flops 9 and 10 of the negative signal level difference of all channels are in the zero state at the request input 5 of the formation, which causes the presence of the signaling device 12 pulses in the channel 4i of the formic “1 (high levels) at the first It detects a single impulse, which, both 1 and 2 of the second signal outputs 20, sets the triggers 9 and 10 of this channel device, as well as readiness for srabal (and through the signal output 3, the mounting of the Ib and 8 elements in all the batches and the triggers 9 lower priority. 4. On request inputs 5 all On channels, where simultaneously with 4 sources from the corresponding sources, an instant attempt to capture the OM), the sig-25 state enters the zero formation (for example, a computer). Further, the operation of the device is repeated.

Claims (1)

A multichannel priority device for connecting to a common highway containing three elements in each channel. Consider the operation of one of the 4.30 channels AND, two triggers, the delay element, and since the other channels operate the pulse shaper, each channel is similarly operated. . The unit-output of the first element I is connected to a single signal from the request input 5 to the cable input of the first trigger, the first one (for example, in the first channel 4 |), the forward input of the first element I is connected to the shield through an open element 6 , setting the prohibition of the common line of the device, pours the trigger 9 into one state, 35 the output of the delay element is connected to the first, resulting in the first signal output of the second element And, the second Logical “O (low level. At random time instants of a computer, as the need arises for transmitting information, they send 4 logical signals“ 1. During device 1, the logical signal "O" is set and, therefore, the elements AND 6 of all channels 4 are closed (i.e. requests from the computer for capturing OM from a given time in the device are not fixed). After the logical signal "1" is set at the single output of the trigger 9 and until the single signal at the output of the And 6 element disappears, the input of which is connected to the zero output of the second trigger, the single input of which is connected to the output of the second element, the zero input of the first trigger is connected to the zero input of the second trigger, characterized in that, in order to reduce the equipment volume, in each channel the request input of the device is connected to the second the input of the first element And whose input input is connected to the zero output of the second trigger, the single input of which is connected to the output of the second element And, the zero input of the first trigger is connected to the zero input of watts The first trigger, characterized in that, in order to reduce the amount of equipment, in each channel the device request input is connected to the second input of the first element AND, the input of the input switch of the element 7 sets the signal of the pulse switch and the first input of the third element AND whose second input is connected to the output of the first element And, the output of the third element And is connected to the input of the delay element, the output of the pulse shaper is connected to the zero input of the first element And, the second input of which is connected to the output of the first element And, output etego AND gate connected to the input of the delay element, the output pulse shaper is connected to the zero input perlogicheskoi "1, which, after passing through delay element 11 and AND gate 8 open, sets the flip-flop 10 in a single state. The delay on the delay element 11 in each channel is set with the 50 trigger value and with the reset total masking, which distinguishes from the delay on the device, the unit output of the second 11 in other channels by an amount of time longer than necessary to pass the signal through elements 8 and 10 and the signal output 2 of the device between the two most distant 55 channels with the total trunk occupancy of channel 4. This eliminates the possibility of a device first exit The simultaneous connection of a multiple trigger is connected to the third input of the racked channels to the OM. The signal from the single element I. the trigger is the output of the device, the zero output of the first trigger is connected to the prohibition width of the common trunk of the device, the zero output of the second trigger of the output connection of the trigger 10 via the information output 13 of channel 4 signals the corresponding computer that the OM is captured and transmission of information can be started. At the same time, the logical signal "O from the zero output of the trigger 10 through the signal on element 11) than on channel 4i, they (attempts) are blocked. After the computer connected to channel 4i completes the transmission of information, it is lower in order of priority (longer delay times cast on the interrogation input 5 of its the input of which is connected to the zero output of the second trigger, the single input of which is connected to the output of the second element, the zero input of the first trigger is connected to the zero input of the second trigger, characterized in that, in order to reduce the equipment volume, in each channel the request input of the device is connected to the second the input of the first element And the input of the pulse driver and the first input of the third pulse puller and the first input of the third element And, the second input of which is connected to the output of the first element And, the output of the third element And oedinen to the input of the delay element, the output pulse shaper is connected to the zero input pen Vågå trigger and reset schinoy total magist- rali device, a single output of the second not with the total device bus occupancy, the only output of the first the trigger is the output of the device, the zero output of the first trigger is connected to the prohibition of the total trunk of the device, the zero output of the second trigger is connected