SU1381527A1 - Device for outputting data to telegraph apparatus - Google Patents

Abstract

The invention relates to the field of computer technology and can be used in computer systems for outputting information, for example, from a computer. The aim of the invention is to improve the testability of the device. The device contains an input register I, a unit 2 for setting the conversion mode, a block 3 and an issuing unit, a code conversion unit 4, a micro / program control unit 5, a pulse generator 6, a switch 7, a shift register 8, a switch 9, a telegraph unit 10, a switch 11 , information device input 12, mode setting input 13, start input 14, control input 15, device ready output 16, communication bus 17 with a telegraph device. The additionally introduced switch 7 serves to transmit signals that clock the output of the output information sequence, depending on the signals at the control input 15 from the corresponding generator output. The dryness of the invention consists in providing the possibility of generating and transmitting serial information with a frequency that allows for confident oscillography of the processes of generating and transmitting this information, as well as monitoring the parameters of individual pulses on the entire formation path and transmitting serial information. 5 il. CO 00 ate tSD

Description

FI.1

The invention relates to computer technology and can be used, for example, in computer systems for outputting information from a computer.

The aim of the invention is to improve the testability of the device.

FIG. 1 shows a block diagram of the device; in fig. 2 - functional scheme of the code conversion unit; in fig. 3 is a functional block diagram of the conversion mode setting; in fig. 4 - the simulation block is functional; in fig. 5 is a functional block diagram of the firmware control unit.

The device contains (Fig. 1) an input register 1, a conversion mode setting unit 2, a simulation unit 3, a code conversion unit 4, a microprogram control unit 5, a pulse generator 6, a control frequency switch 7, a shift register 8, an output switch 9, a telegraph unit 10 , key II, device information input 12, mode setting input 13, start input 14, control input 15, device readiness output 16, communication bus 17 with a telegraph device.

Code conversion unit 4 contains (FIG. 2) a group of elements AND 18, an encoder 19, a switch 20.

The conversion mode setting unit 2 contains (Fig. 3) an encoder (ROM) 21, a register 22.

The simulation unit 3 contains (FIG. 4) a toggle register 23, a switch 24 operating modes, a switch 25 for the simulation shift register, a simulation shift register 26.

Block 5 contains (FIG. 5) multiplexer 27, block 28 of a permanent memory (ROM), register 29.

Input register I is used to store data from a source of information, for example, from a computer. The unit 2 for setting the conversion mode, depending on the code of the incoming command, generates output signals defining the code conversion mode. Simulation unit 3 serves to form a test sequence, as well as to ensure transmission of this sequence. Code conversion unit 4, depending on the signals received from block 3, organizes the translation or conversion of the code received from the computer. Block 5 provides the formation of signals that control the operation of the device. The pulse generator 6 generates clock signals that synchronize the operation of the device. Switch 7 is used to transmit signals that clock the output of the output sequence information, depending on the signals at the control input 15, from the corresponding output of the generator 6. The shift register 8 is used to convert a parallel code to a serial one. The output switch 9 selects information transmitted to the telegraph apparatus 10. A key 11 serves to form current packets,

incoming to the telegraph unit 10. The data required for transmission come from the input 12 of the device. An input 13 for setting the device mode is intended for transmitting to the device input data defining the conversion mode. From input 14, the device start signal is received. From the output 16 readiness of the device receives a signal indicating the readiness of the device to receive information. Bus 17 is connected to the terminal telegraph unit 10. Elements AND 18 serve to organize the transfer of a byte of information received from the computer to the input of the encoder 19. The encoder 19 serves to convert the received code into the output code and can be realized using a permanent memory device (ROM). Using switch 20, depending on the signals from block 2, information is transmitted to register 8 either from input register 1 or from encoder 19. The encoder 21 is designed to generate signals that determine the conversion mode depending on the signals at output 16 , and can be implemented using ROM. Register 22 registers the storage of the signals determining the conversion mode for the duration of the current transmission cycle.

Tumbler register 23 is designed to set the test information. Switch 24 determines the source of information transmitted to the end telegraph unit 10 and enables or blocks the operation of the register 26. Switch

25 modes shift register is used to set the mode of operation of the register 26. Register

26 is designed to convert a parallel test information code into serial. The multiplexer 27 serves to implement conditional transitions. ROM 28 serves to store a set of micro commands. Output register 29 is intended

.g for storing the current microcommand. The information inputs of the multiplexer 27 are connected to the input condition signals of block 5. The output of the multiplexer 27 is connected to the younger address input of ROM 28, to the other address inputs of which the signals from register 29 are sent. In each state of the automat to which the selected cell of ROM 28 corresponds, The lower address input is connected to one of the input signal buses of block 5. The selection of a plug-in bus is made in the field

5 micro-command format. The possible format of micro-commands is presented below:

AM K

AMX

UIR

where AMK is the address field of the following microcommand;

AMX - field address of the connected bus input signals;

UPR - field output signals.

If an input signal is present on the selected bus (i.e., "1"), the automaton goes into a state in the lowest address bit of which there is one. If there is no input signal on the selected bus (i.e., “O” is present), the automaton switches to the state in which the address bit of the address is zero. For example, let the address field of the following microcommand represent the OOP combination, the addressable address field of the input signals 010. If the second input of the multiplexer 27 contains an input signal (i.e., "1), then the transition is performed at address 00111, if the input signal is absent, the transition is performed at address 00110. All other conditional transitions are implemented in a similar way. To generate the output signals of block 5, horizontal firmware is used, i.e. Each bit of the field of the output signals corresponds to a certain output signal of block 5.

The device works as follows.

In the initial state, all registers are set to zero (they are not shown to simplify the reset circuit).

The operation of the device is carried out in the modes "Operation," Inspection and "Inspection." The presence of the modes "Operation or" Check is determined by the position of the switch 24. The start of the mode "Control is determined by the signal at input 15.

In the Operation mode and in the absence of the Monitoring mode, the information received from the computer is recorded on the telegraph apparatus 10. In this case, depending on the signals at the output of the register 22, the incoming information can be converted, followed by registration or registration of information without its conversion.

In the "Operation and" Monitoring modes, information is received from a computer and transferred to terminal 17 at an increased frequency in order to verify the formation and transmission of serial information on the entire path of its processing. Telegraph device 10 is turned off.

In the "Check and in the absence of the" Check "mode, the information specified by the toggle register 23 is recorded on the telegraph unit 10.

In the "Check and" control modes, the information with the increased frequency specified by the toggle register 23 is transmitted with an increased frequency in order to check the generation and transmission of sequential information. Telegraph device 10 is turned off. The start signal from the input 14 of the device triggers the operation of the device, after which the device readiness signal is generated at the output 16 of the device.

From the input 13 of the device to the input of the encoder 21 receives information about the modes of operation. At its outputs, signals are generated that determine the conversion mode, which are recorded in register 22. Signals from the output of register 22 arrive at the inputs of the switch 20. At the same time, depending on the signals at the output of register 22, the information inputs of register 8 are transmitted through

5, the switch 20 is connected either to the outputs of the input register 1 (when transmitting without conversion) or the outputs of the encoder 19 (when transmitting with conversion). In the process of transmission, the data coming from the computer from input 12 is initially recorded in input register 1. The data from the block 5 through elements 18 on the encoder 19 data are received in a round-trip manner. From the output of the switch 20, the signals from block 5 record information

5 in the register 8.

Further, depending on the signal at the input 15 of the device, the corresponding output of the generator 6 is connected to the input of the block. If there is a signal at the input 15, indicating the need to form a telegraph parcel with an operating frequency (50 Hz), the output of the switch 5 is connected to the input of the block 5 via switch 7 the operating frequency fp of the generator 6. From the output of the register 8 with the working frequency is carried out a bit of information for the key input 11

5 through the switch 9 and then to the tina 17 and the telegraph apparatus 10.

In the process of checking the formation and transmission of the entire path of serial information on the signal at input 15 of the device, a connection is made to the input

 block 5 of the control frequency of the generator 6. Further, in this case, a bit-by-bit transmission of information with the frequency f from register 8 is effected via switch 9 and key 11 to bus 17. At that, the telegraph is switched off.

After the last bit of the information symbol has been transmitted, the next tetrad arrives at the input of the encoder 19 through the elements of And 18 to the input of the encoder 19. After transferring this tetrad, a request is made to transfer the next data byte from the computer and write it to the input register I and then transfer it to the bus 17 in the same way as described above.

In the absence of the need to convert information (as evidenced by the appearance of the corresponding signal at the output of the register 22), the data from the output of the register 1 is fed through the switch 20 directly to the input of the register 8.

the corresponding signals from block 5 are written to register 8, then the device operates similarly to that described above.

In the "Check using the toggle register 23" mode, test information is set, which, if there is a corresponding signal from the output of switch 25, records the signal from one of the outputs of generator 6 (depending on the signal at input 15 of the device) to register 26.

Using switch 24, the output of register 26 is connected to the input of key 11. Then, the signal from the output of switch 25 establishes the mode of shift of register 26. If it is necessary to check the processes of forming and transmitting serial information, the signal is input to input 15 of the device, in accordance with which the output is connected the control frequency ft of the generator 6 through the switch 7 to the input of the register 26. Next, with the frequency ft, the specified symbol is transmitted sequentially. Since the output and input of the serial code of register 26 are connected, after transmitting the stop parcel, the next starting parcel of the specified symbol is transmitted, thus the cyclical transmission of the specified symbol with a frequency convenient for visual observation of the processes of formation and transmission of serial information is provided. Similarly, if there is a corresponding signal at input 15, the transmission of a given serial code with the frequency of a telegraph parcel from register 26 to the telegraph device 10 is provided.

Claims (1)

Invention Formula A device for outputting information to a telegraph apparatus containing an input register, the input of which is an input of a device for connecting to the information output of an information source, and a code conversion unit, an information input connected to the output of the second register, a conversion mode setting unit, in0 0 5 five 0 the formation input of which is an input of the device mode setting, and the first and second outputs are connected respectively to the inputs of the mode setting of the code conversion unit and the firmware control unit, the start input of which is the device start input, and the first output is the device output for connecting the information source synchronization input , the shift register, the information input connected to the output of the code conversion unit, the clock inputs of which and the shift register are connected respectively to the second and third the output of the firmware control block, a pulse generator, the first output connected to the clock input of the firmware control block, the output switch, the first information input connected to the output of the shift register, and the output - the output of the output key, the output of which is the output of the device for connecting to the telegraph input apparatus, and a simulation unit, including a simulation shift register, a toggle register, a device mode switch, and a simulation shift register switch, with than the second information input of the output switch is connected to the output of the sequential code of the simulation shift register, the information input and recording input of which are connected respectively to the outputs of the toggle register and the switch of the simulation register of the shift, and the read input to the output of the device switch and the address input of the output switch, characterized in that, in order to increase the testability of the device, a control frequency switch is inserted into it, with the second and third outputs of the generator pulses and connected respectively to the first and second data inputs of the switch control frequency, the output of which is connected to the clock input of firmware control and simulation of the shift register unit, the address input frequency control switch is an input device monitoring mode. From Wallock one W From SAOKU From Uloka2 .g / 3 20 In block 8 from block 7 Console (/ board From Walok b Phage. FIG.