SU964642A1

SU964642A1 - Priority device

Info

Publication number: SU964642A1
Application number: SU803221602A
Authority: SU
Inventors: Эдуард Павлович Чернаков; Борис Сергеевич Богумирский; Владимир Михайлович Цыганков
Original assignee: Военный Инженерный Краснознаменный Институт Им.А.Ф.Можайского
Priority date: 1980-11-11
Filing date: 1980-11-11
Publication date: 1982-10-07

Description

1one

Устройство относитс к вычислительной технике и может быть использовано в системах обработки информации с применением цифровых вычислительных машин.The device relates to computing and can be used in information processing systems using digital computers.

Известно устройство приоритета, содержащее регистр индикации запросов, вспомогательный регистр, элементы И, ИЛИ .A priority device is known that contains a query indication register, an auxiliary register, AND, OR elements.

Его недостаток - значительное увеличение количества оборудовани с увеличением числа абонентов. Кроме того, сигналы запросов с выхода устройства не могут дополнительно использоватьс в качестве адресных сигналов.Its disadvantage is a significant increase in the number of equipment with an increase in the number of subscribers. In addition, request signals from the output of the device cannot additionally be used as address signals.

Наиболее близким по технической сущности и достигаемому результату к изобретению вл етс устройство, содержащее регистр запросов, вспомогательный 1зегистр и первую-третью группы клапанов 2 .The closest in technical essence and the achieved result to the invention is a device containing a register of requests, an auxiliary registrar and the first and third groups of valves 2.

При удаленной группе абонентов целесообразно принимать в ЦВМ (выдавать из 1ШМ) запрос (разрешение) на обслуживание в виде адреса абонента, а не в ьиде потенцкала на соответствующем проводе , так как при этфл уменьшаетс число проводов в линии. В этом случае дл сопр жени известного устройстваWith a remote subscriber group, it is advisable to receive a request (permission) for servicing in the form of a subscriber's address, rather than in the form of potential on the corresponding wire, as the number of wires in the line decreases. In this case, to pair the known device

с линией и с ЦВМ необходимо к входам запросов и к адресным выходам устройства подключить дешифраторы, а к адресным выходам шифратор. При этом вспомо .- гательный регистр содержит столько триггеров, ск М1ЬКО абонентов, а число клапанов третьей группы равно удвоенному числу абонентов. with the line and with the digital computer, it is necessary to connect the decoders to the inputs of the requests and to the address outputs of the device, and an encoder to the address outputs. At the same time, the auxiliary register contains so many triggers, ck M1KO subscribers, and the number of valves of the third group is equal to twice the number of subscribers.

Недостатком- этого устройства вл ют ,5 с большие аппаратурные затраты.The disadvantage of this device is, 5 with large hardware costs.

Цель изобретени - расширение области применени .The purpose of the invention is to expand the scope.

Поставленна цель достигаетс тем, что устройство, содержащее два регистра, The goal is achieved by the fact that a device containing two registers

Claims

20 two blocks of elements And, a group of elements And, with the polling input of the device connected to the first inputs of the elements And groups, the forward and inverse outputs of the first 3 .9 register are connected to the group of inputs of the first block of elements And, the outputs of elements And groups of the connection with zero inputs Dam triggers of the first register, the reset input of the device is connected to the reset inputs of the triggers of the first and second registers, the first group of information inputs of the device is connected to the first group of inputs of the second block of elements I, the first and second inputs of which are connected to respectively with t-polling input and to the input of an interrupt apparatus; The group of outputs of the second register is a group of information outputs of the device, contains two decoders, an encoder, the first direct output of the first trigger of the first register and the group of outputs of the first block of elements And are connected to the input group of the Yeshfrator and the group of outputs of the encoder connected to the second group of inputs of the second block of elements And, the group of outputs of the second register is connected to the group of inputs by the first decoder of the torus, each output of which is connected to the second input of the corresponding The second element of the group, the second group of information inputs of the device is connected to the group of inputs of the second decoder, each output of which is connected to the single input of the corresponding trigger of the first register. The drawing shows the scheme of the proposed device. The device contains a register of requests executed on triggers 1-4, an auxiliary register executed on triggers 5-6, a block of elements And 710, a block of elements And 11-15, a group of elements And 16-19, decoders 20 and 21, an encoder 22, entrances 23-27, groups 28 and 29 entrances and groups of AOR and 31 outputs. The device works as follows. When the power is turned on, all the triggers are set to the zero state by pulses at the inputs 24 and 27 of the device. Suppose that the second and third subscribers made requests. In this case, subscriber number codes are supplied to a group of 29 device inputs. The signals of these requests are set to one state triggers 2 and 3. The signal from the single output of trigger 2 passes through the block of elements 11, open by single potential from route 1, and goes to the output of the device as an interrupt signal, as well as to the input encoder 22, where it is converted into a code of the second subscriber. Since the block of elements And 13 is closed, then the United States from the output of trigger 3 does not come anywhere. The write enable signal enters on -path 25 and writes the code of the second subscriber to the auxiliary register. Group 31 of the outputs is the address output of the device for the subscriber whose request is currently being processed in the digital computer and serves to switch on the information I / O bus between the digital computer and the subscriber who sent the long request. The output of the decoder 2O is turned off by block 8. After receiving the interrupt signal in the digital computer by a signal from the input 23 of the device, trigger 2 is set to O, resulting in a signal from the output of trigger 3 passing to the encoder 22. After the I / O with the second subscriber has terminated the input reset signal 27, the auxiliary register is zeroed out and the third subscriber code is written to it using the signal from input 25. The operation of the device upon the arrival of requests is similar to that described. The signal from the device input 26 to the auxiliary register can record address codes from the outside, for example, outputted from the digital computer by program and received on a group of 23 device inputs. Thus, in the proposed device, in comparison with the known hardware costs for the trigger and for 2 (M-6og, M) elements I. The invention formula The priority device containing two registers, two blocks of elements And, a group of elements And, and the input The device’s o1phos is connected to the first inputs of elements AND of a group, the forward and inverse outputs of the first register are connected to the group of inputs of the first block of elements AND, the outputs of elements AND of a group are connected to zero inputs of triggers of the first register, the reset input of the device is connected to the reset inputs of triggers of the first and second registers, the first group of information inputs of the device is connected to the first group of inputs of the second block of elements I, the first and second inputs of which are connected respectively to the input of the poll and the input of the interrupt of the device, the group of outputs of the second register is a group of information outputs of the device, characterized in that, with an extension circuit, it contains two decoders, an encoder, with the first direct output of the first trigger of the first register and the group of outputs The first block of elements And is connected to the group of inputs of the encoder and is a group of outputs of the device overriding, the group of outputs of the encoder is connected to the second group of inputs of the second block of elements And, the groups of outputs of the second register are connected to 9 26 the group of inputs of the first decoder, each output of which is connected to the second the input of the corresponding element AND of the group, the second group of information inputs of the device are connected to the group of inputs of the second decoder, each output of which is connected to the single input of the corresponding trigger ervogo register. Sources of information taken into account during the examination 1. USSR author's certificate number 425177, cl. Q 06 F 9/46, 1972.

2. USSR author's certificate number 703812, cl. C, 06 F 9/46, 1979 (prototype).