SU1434432A1

SU1434432A1 - Multichannel priority device

Info

Publication number: SU1434432A1
Application number: SU874222716A
Authority: SU
Inventors: Андрей Юрьевич Щеглов; Владимир Анатольевич Богатырев
Original assignee: Предприятие П/Я М-5308
Priority date: 1987-04-06
Filing date: 1987-04-06
Publication date: 1988-10-30

Abstract

Изобретение относитс к вычислительной технике и может быть испЪльзовано при организации обращени нескольких абонентов к одному общему ресурсу. Цель изобретени - повышение быстродействи . Многоканальное устройство приоритета содержит элемент НЕ 1 и К каналов 2, в состав каждого канала вход т элемент 3 задержки, первый 4 и второй 5 триггеры, элемент И 6 и его первый 7 и второй 8 элементы ИЛИ, вход 9 запроса на захват ресурса, выход 10 подтверждени захвата ресурса, вход 11 опроса и выход 12 опроса каналов. I ил. 9 ЬThe invention relates to computing and can be used in organizing the access of several subscribers to one common resource. The purpose of the invention is to increase speed. The multichannel priority device contains the element NOT 1 and K channels 2, each channel contains delay element 3, the first 4 and second 5 triggers, AND 6 and its first 7 and second 8 OR elements, input 9 of the resource capture request, output 10 confirm the capture of the resource, the input 11 of the survey and the output 12 of the survey channels. I il. 9 b

Description

Изобретение относитс к вычислительной технике, в частности к приоритетным устройствам, и может быть использовано дл организации обращени несколь кими абонентами к общему ресурсу.The invention relates to computing, in particular, to priority devices, and can be used to organize a common resource to be used by several subscribers.

Цель изобретени - повышение быстродействи устройства.The purpose of the invention is to increase the speed of the device.

На чертеже представлена функциональна схема устройства.The drawing shows the functional diagram of the device.

Устройство содержит элемент НЕ 1 пеливает в единичное состо ние второй триггер 5, высокий потенциал с выхода которого поддерживаетс на входах 11 устройства всех каналов, следующих за выбранным, на каналах, предшествующих выбранному, поддерживаетс низкий потенциал . При этом высокий потенциал с выхода второго триггера 5 выбранного карала через второй элемент ИЛИ 8 поступает на управл ющий выход 10 подтверждени The device contains a NOT 1 element that cuts the second trigger 5 into a single state, the high potential from whose output is maintained at the device inputs 11 of all channels following the selected one, and the low potential is maintained on the channels preceding the selected one. At the same time, a high potential from the output of the second trigger 5 of the selected karaal through the second element OR 8 enters the control output 10 of confirmation

ред первым каналом и в каждом из К 10 захвата ресурса канала. При по вленииEdited the first channel and in each of the K 10 channel resource captures. When appearing

каналов 2; элемент 3 задержки, первыйнизкого потенциала на управл ющем входе 9channels 2; 3 delay element, first low potential at control input 9

триггер 4, второй триггер 5, элемент И 6,trigger 4, second trigger 5, element 6,

первый 7 и второй 8 элементы ИЛИ,first 7 and second 8 elements OR,

вход 9 запроса на захват ресурса, выходinput 9 request to seize the resource, exit

10 подтверждени захвата ресурса, вход il10 acknowledgment of resource capture, input il

опроса и выход 12 опроса.polling and exit 12 polling.

Устройство работает следующим образом.The device works as follows.

В исходном состо нии низкий потенциал инвертируетс элементом НЕ 1 передIn the initial state, the low potential is inverted by the element NOT 1 in front of

Claims

Invention Formula

A multichannel priority device containing an element of NOT and K channels, each of which contains a first trigger, a delay element and an AND element,

the request for the seizure of the channel resource the second flip-flop 5 is set to the zero state, a low potential appears at the control output 10 of the acknowledgment of the seizure of the channel resource, on channel 2 the channel request enable signals continue to be generated.

the first channel. In the absence of high potentials at the control inputs 9

request for the seizure of the channel 2 resource, this high potential passes through all the channels and, upon coming to the element NOT, is inverted by it. Consistently at all

20

moreover, the output element is not connected to

the channels receive a low potential signal

the first input and the direct output of the first triggers of all channels are connected respectively to the corresponding request inputs

isdt-mjiDi nuv iyijdci CHI PIL iiuicHund-END of delay delay and synchronous input

The device, which arrives at the NOT elements 1, 5 of the first trigger of the first channel, transforms the device into a high potential, and so on. The input of the installation is "O, Informational Thus, the channel request permission signals are generated in each channel. If a high potential appears at the control input 9 of the request to capture the device channel resource capture, from the channel resource of the confirmation signal and the logical unit of the device unit and the channel dew can be generated as the first input of the AND element of its channel, and on the falling edge of which the signal input is connected to the output of the channel request. If the device d, the delay element of its channel, is triggered on the leading edge, then this is different. In order to increase the case of the leading edge of the speed resolution signal, each channel of the additional channel request appearing at the input - "c" contains a second trigger, the first and second devices 11, sets the OR elements, in each

channel output element And is connected to the first input of the first element OR, the second input of which is connected to the first input

state of the first trigger 4, low potential from the first output of which through the element And 6, the first element OR 7

(since the second trigger 5 at the same time, 40 second eTement YLI and the second iodine is in the zero state) support-trigger, the information input and the installation input in "1 of which are connected respectively to the bus of the logical device and the input request for the seizure 5 of the resource device channel, the inverse output of the first trigger is connected to the second input of the second element OR, the output of which is connected to the output of the device resource acquisition confirmation channel, the output of the element is NOT connected to the sync potential at the control input 9 by the input v cerned trigger first channel

millet to capture the resource of the first device channel, the outputs of the first elements OR from

of the first through (K-1) th channel (K is the number of device subscribers) of the device are connected to the inputs of the delay elements, the first and second synchronized inputs, respectively. If the device triggers the back 55 triggers from the second to the K-th front, then this case back front correspondingly, the output of the first element

the channel request resolution signal, on the OR channel of the Kth channel, is connected to the input

At the device input 11, the setting element is NOT.

At the inputs of the device, 11 all channels following the selected one have a low potential, and a high potential on the preceding selected one. At the same time, a high potential from the second output of the first trigger 4 of the selected channel through the second element OR 8 enters the control output 10 confirming the capture of the channel resource. When it appears low

the trigger 4 is set to one, and the channel request enable signals continue to be generated on channels 2, as described above.

The second flip-flop 5 is in a single state, the high potential from the output of which is maintained at the device inputs 11 of all channels following the selected one, and the low potential is maintained on the channels preceding the selected one. At the same time, a high potential from the output of the second trigger 5 of the selected karaal through the second element OR 8 enters the control output 10 of confirmation

channel resource capture. When appearing

20

moreover, the output element is not connected to

A device resource resource capture, with g logical unit of the device and the first input of the element AND its channel, the second input of which is connected to the output, the delay element of its channel, characterized in that. In order to increase speed, each channel additionally contains a second trigger, the first and second elements OR, and