SU717768A1 - Device for interrupting digital computer - Google Patents

Description

 . I

The invention relates to the field of digital computing networks and can be used in digital control systems that operate in real time and contain digital computers in their composition.

Priority devices 1} are known, containing a matrix of switching elements, a storage of current priorities, a priority setting, a matrix state analysis, and a query fixation, implementing functions of selecting a priority request for SPSS.

A disadvantage of this device is its complexity.

The closest to the essence of the technical solution is the device. computer interrupt, containing a drive, whose input is connected respectively to the outputs of the first and second decoders connected With the outputs of the corresponding address registers, the input of the second address register is in the device request, the first is in; the second outputs of the accumulator are connected respectively to the first input of the first address register and the corresponding input from the group of inputs of the control unit.

A disadvantage of this device is the limited copying (up to 5) priorities (or priority levels) used by the interrupt organization. This is due to WHAT each priority is assigned to a certain address register bit. As the number of priorities grows, so does the required number of bits in the address register. An increase in the number of bits in the address register leads to a sharp increase in the storage capacity (up to 2 words, where is the number of bits in the address register). This makes it practically impossible to use such devices in digital systems that have a blu-ray number of interrupts. - - - The chain of the invention is the reduction of the information capacity of a device's copie when working with a significant (up to several hundred) number of sources of queries that are imperative. reduction of equipment removal. The set up circuit is achieved by the fact that the device contains P blocks of requests, and the third output of the NAC: i1th (1 1, PL) request block is connected to the control inputs of the first and second decoder of the (i +1) -th block the request, the control outputs of the first and second decoders of the request block are connected to the output of the control unit, the third output of the accumulator of the cth unit of the recorder 6C is connected to the additional input of the control unit, the output outputs of which are connected to the second inputs of the first address registers, which are assigned to the first inputs of the control unit; request to the drawings is a block diagram of the device. Heroism contains a block of inquiry, which includes 1, the first 2; and the second 3 decoders, the first 4 and second 5 address registers and 6 control leds. The index t covers the troupe of the elements to the i-th request tree (i 1, P). .- The device works as follows. ;. : -. At the end of each implementation in the digital computer unit 6, the digging signal arriving at the decryption of the survey is received. VpaTojpoB 2 and 3 of the first request block. In the case of the absence of 1and requests to interrupt the current program from aToro jSnoKai san; The dew and the bursts of the previous commands that took place (the zero state of registers 4 and 5) from the output of accumulator i comes to the interrogation request of the decoders 2 n 3 of the second request block. In the absence of the current program and no memorized interruptions in the rest of the request, the signal from the output and the storage device 1p is fed to the input of block 6, tSe causes the next command to be executed. When a request arises for interrupting the current program from the first request of the interrogation signal of the de-radiators 2 and 3, generated by the block 6 of the end of executing the next command by a non-zero register 5, pr 3 s; - -Sv - 6 "RUNS reading from accumulator 1. As a result, at the output of accumulator 1, executive ignals are generated, which set one of the triggers of register 4 to one (cancellation), and interrupt with the power of block 6) current / program and read new command. Execution of the called command leads to the quenching of the request on the register 5, and the termination of the execution of the program of interruptions leads to the reset of the register 4 and 1 1 - -. ,, launching the previously interrupted program. Before the execution of the interrupted command, the decoders 2 and 3 of the first block of requests are polled again. Upon completion of each command, block 6 generates a polling signal from decoders 2 and 3 of the first block of the pattern, which through all blocks of requests each time goes to block 6. The process continues until the input of register 5 of one of the block of queries according to the request signal. In this case, the request will be recorded in register 4 of the request block that caused the piercing, and actions similar to those described for the interruptions of the first group will be performed. If, on time, the interrupt program of the i -th group receives a request of higher priority, then it interrupts the program being executed. If, during the discharge of the program of interruptions of the 1st group, a request is received by the boyfriend of a low priority, then in the register 5 of the GnOnO block of the request it is memorized. The execution of an interrupt program caused by a memorized lock (or requests) occurs in the order of their priority in the execution of program interrupts of the higher search block. Thus, the device allows for a large number of requests to drastically reduce the information capacity of the carriers of the request blocks and to provide a simple interface and real-time collaboration of a large number of external devices and a digital computer. Invention The digital interrupt spitting device; the first machine that contains the request block, which includes the drive, whose inputs are connected respectively to you 5 f 1 moves of the first and second decoders, connects the inputs to the outputs of the corresponding address registers, the input of the second address register is the input of the device request , the first and second outputs of the accumulator are connected respectively to the first input of the first address register and the corresponding input-from the groups of inputs of the control unit, which means that that, for the purpose of cb-r equipment volume christening, the device contains n request blocks, the third output of the accumulator of the i -th (i 1, P -1) request block is connected to the control inputs of the first and second decryptors (nl) -ro block request, controlling 8 outputs of the first and second decoders of the first request block are connected to the output of the control block, the third output of the accumulator of the L-th block of the request is connected to the additional input of the control block, the additional outputs of which are connected to the second inputs of the first address registers of the corresponding blocks shackles of zapryus. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2364631 / 18-24, f.O. 06 F 9/18, 1976., 2. Krzub V.M. Interrupt systems of digital computers. M., Sov.radio, 1976 (prototype).

Claims (1)

A device for interrupting a digital calculation ·, a sleeping machine, containing a request block, including a drive, the inputs of which are connected respectively to you / 5 717768 moves of the first and second decoders connected by the inputs to the outputs of the corresponding address registers, the input of the second address register is the input of the device request, the first and second outputs of the drive are connected respectively to the first input of the first address register and the corresponding input from the group of inputs of the control unit, The reason is that, in order to reduce the amount of equipment, the device contains l query blocks, and the third output of the drive of the гоth (i = 1, And -1) query block is connected to the input control of the first and second decryptor 15 (i + l) -ro request blocks, the control outputs of the first and second decoders, tori of the first request block are connected to the output of the control unit, the third drive output of the L-th request block is connected to the additional input of the control unit, additional the outputs of which are connected to the second inputs of the first address registers of the corresponding request blocks. -