SU1381593A1 - Device for writing data to prom - Google Patents

Abstract

The invention relates to automation and computing and is intended for use in memory chip programmers. The aim of the invention is to increase speed and enhance functionality by monitoring the recorded information. The goal is achieved by introducing a second pulse generator, a group of AND elements, a trigger, a second pulse counter, AND elements, OR elements. In this device, if some address is not programmed in the EPROM, the operation is stopped and a fault is indicated. After completion of the programming process, a command from the control panel compares the information of the RAM unit and the programmed ROM. 5 il. with s

Description

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The invention relates to automation and computing and is intended for use in memory chip programmers.

The purpose of the invention is to increase speed and enhance functionality by controlling the recorded information.

By command from the control panel from external noors into the RAM block Logs are programmed into programmable permanent memories (PROM) information.

8registr enters information on the last address of the EPROM. On command from the control panel, the process of recording information of the RAM into the EPROM begins. If any address

the EPROM is not programmed, the work is stopped and a fault is indicated. i After the end of the programming process, a command from the control panel compares the information of the RAM unit and the programmed ROM.

Fig. 1 shows a functional diagram of a device for recording information in a persistent storage device; in fig. 2 shows an example of implementation of the control panel; FIG. 3 - the same, the second generator; FIG. 4 - the same, the driver; in fig. 5 - the same, the first gene Rathor. I

A device for recording information in programmable permanent memory devices contains the first comparison unit 1, control panel 2, multiplexer 3, photo input unit 4, pulse shaper 5, first pulse generator 6, address register 7, first pulse counter 8, block

9 operative memory, second unit 10 of comparison, second generator 11 pulses, groups of elements AND 12 and 13, trigger 14, second counter 15 pulses, elements AND 16-20, elements OR

21-24. The control panel 2 contains the triggers 25-29, the keyboard 30 and 31, the encoders 32-33, the driver 34 of the pulses O, the elements 35, 36 And, the block 37 of the display. The second generator 11 impulses contains the generator 38, the elements 39, 40 And, the generator of single pulses 41, the element 42 1-SHI, the element 43 NOT. The imaging unit 5 contains blocks of elements And 44, 45, block 46 amplifiers, element 47 NOT. generator 6 consists of multivibra35

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torus 48, elements 49 And, geger 50.

The device works as follows.

In the initial state, the counters 8 and

15, register 7, the trigger 14 is set to O. The device operates in the modes: information input; programming the EPROM connected to the first

and the second output of the device, the comparison of information stored in block 9, with the information recorded in the EPROM (control mode).

Modes of operation are set by signals from the third and fourth outputs of the remote control 2 controls.

 In the information input mode, the O level of the third output of the control panel 2 is set to O, the fourth level - level 1. In the programming mode, the third output is level 1, the fourth level is O, and in the control mode, both outputs have O levels. Information entered is It comes from the photo input unit 4, the control keypad 2, or from the EPROM.

The source of input information is selected by the operator from the second group of outputs and from the first and fifth outputs of control panel 2.

Level 1 on the first output and level O on the fifth correspond to the input of information from the photo input unit 4, level O on the first output and 1 on the fifth correspond to the input of information from the EPROM, and the levels O on both outputs correspond to the input mode from the keyboard of the remote control 2. The second group of outputs of the remote control 2 controls the selection of the corresponding channel on the multiplexer 3.

The start signal is the removal of level 1 from the second output of the remote control 2 controls.

Consider the mode of entering information from block 4 photo input. Level 1 from the fourth output of the remote control 2 controls through groups of elements And 12, 13 prohibits the passage of information to block 1 of the comparison and prohibits the passage of signals through the elements And

16.17, 19. From the third group of outputs of the remote control 2 of the control, the register 7 records information about the last address of the EPROM. According to the signal from the first output of the control panel 2, the photo input unit 4 is turned on and the input of information on the bytes begins. Each

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a byte of information is accompanied by a synchronizing pulse at the second output of block A of the photo input.

This pulse through the element OR 21 is fed to the third input of the generator 11 (an example of implementation of which is shown in Fig.Z). If there is no level 1 (equal signal) from the block

10 comparisons at the second inlet of the general

A torus 11 and the presence of the information input mode for each clock pulse from the photo input unit 4 at the second output of the generator 11 appears one pulse. On the leading edge of this pulse, the information from multiplexer 3 is recorded in memory unit 9. The address at which information is recorded is indicated by counter 8. Since it was initially set to O in the initial state, the first byte of information is recorded at the zero address. On the falling edge of the pulse from the second output of the generator 11 through the element OR 22, a unit is added to the counter 8, the next address arrives at the operational memory block 9 and the next information byte begins to enter. The entry continues until the contents of counter 8 become equal to the information; recorded in the register 7. In this case, on the leading edge of the pulse from the second output of the generator 11, the information from the multiplexer 3 is recorded in the operational memory unit 9 and, using the same pulse arriving at the comparison unit 10 through the OR element 23, the comparison unit 10 the equality signal, which arrives at the second input of the generator 11, prohibits the generation of a pulse at its second output. The equality signal also goes to the second input of the remote control 2, which turns off the photo input unit D and removes the level 1 from the fourth output of the remote control 2 control.

At the second output of the control panel 2, level 1 appears, which sets the counter 8 to zero. The input mode is over. The input of information from the EPROM and the keyboard of the remote control 2 of the control is similar to the input from the 4 photo input unit. When entering information from the EPROM through the shaper 5 (an example of implementation of which is shown in Fig. A), the group of the EPROM outputs is connected to the first group

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the multiplexer 3 inputs. At level 1, the fourth input of the generator 11, coming from the fifth output of the control panel 2 of the control, at the second output of the generator 11 is constantly present pulses. According to these pulses, information is entered in the same way as input from the photo input unit 4. When entering information from the keyboard of the remote control 2, a synchronizing pulse appears at each byte of information at its sixth output, which through the OR 21 element arrives at the third input of the generator 11. Further work is similar to the input from the photo input unit 4.

Programming mode The level O at the fourth output of the control panel 2 permits the passage through the groups of elements 12 and 13 of information from the multiplexer 3 and the memory block 9 to the comparison block 1. The remote control 2 on multiplexer 3 selects information from the EPROM. The shaper 5 is connected to reading information from the EPROM and through it information is sent to multiplexer 3. Level O from the fourth output of the remote control 2 controls the formation of pulses at the second output of the generator 11. G pulses are present only at its first output. In the absence of level 1 at the second output of the generator 6 at the first and second inputs of the element And 16 there are levels O, allowing the passage of pulses from the first output of the generator 11 through the element 16 to the third inputs of the groups of elements And 12, 13. On a positive pulse from the first output of the generator 11 information from the multiplexer 3 and the memory block 9 through the groups of elements 12 and 13 enters the comparison block 1. If the information is unequal, level 1 appears at its output, level O remains equal. If the EPROM information stored in memory unit 9 is unequal, then level 20 enters level 2 at its second input on generator 6 and starts it. At the first output of generator 6, a burst of impulses appears. At the time of the operation of the tutu at the second output of the generator 6, level 1 appears, a strobe is formed. At the time of action

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The strobe positive generator pulses 11 do not arrive at groups of elements And 12, 13 at the inputs of the comparison unit 1 is equal to information. Level 1 at the output of comparison unit 1 adds a unit to counter 15 and confirms that trigger 1A is set to O. Level O at its direct output prevents the negative pulse from the output of element 16 from passing through element 17. 17. The pulse at the second input of element OR 22 does not appear and counter 8 does not change its state. The strobe at the second output of the generator 6, arriving at the input of the driver 5, connects the EPROM outputs to the generator biv in accordance with the information recorded in the operating memory unit 9, then responds to the EPROM in order to record the specified information into it. The address of the EPROM cell, which is affected by generator 6, is indicated by counter B. After the end of the stack of pulses, the second output of generator 6 appears at level O and the comparison cycle of the positive pulse from the first output of generator 11 is repeated. In case of equality of information of the block 9 of the RAM and the EPROM, i.e. the information of the RAM block 9 is recorded in the EPROM; at the output of the comparison block 1, the level O appears. The generator 6 does not start. The level O on the falling edge of the positive impulse from the output of the element AND 16 sets the trigger 14 to one state. Level 1 from the direct output of the trigger 14 is permitted. From the output of the element 16 and through the element 17, the negative pulse from the output of the element 16 and the output element And 17 resets the counter 15 and allows the comparison to block 10 through the element OR 23. If the information is not equal, then the pulse from the output of the AND 17 element OR 22 adds one to the counter 8. At block 9, the new memory and the EPROM receive a new address and the comparison cycle is repeated. If the information of the next address of block 9 of the RAM and the EPROM are equal, then an output appears at the output of AND 17 and, without starting the generator 6, one is added to the counter 8, the address is changed. The comparison cycle is repeated. If after the end of the comparison

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and programming this address of the EPROM, the information recorded in register 7 and counter 8 is equal, then level 1 from the output of comparing unit 10 stops Further operation. Level 1 is removed from the third output of control console 2 and appears on its second output. Counter 8 resets - with . The programming mode is over. If, after acting on the EPROM, recording pulses from the generator 6, the EPROM is not programmed, i.e. the equality of the pulse from the output of the AND element 16 at the output of the comparison unit 1 did not appear, the generator 6 starts up again, and the programming cycle repeats. When this situation arises several times (the quantity is determined by the capacity of the counter 15), level 1 from the output of the counter 15 through the element AND 18 and OR 24 stops the operation of the device and indicates a fault. Level 1 is removed from the third output of the remote control 2 and appears on the fourth. The operation in the programming mode ends either by detecting the non-programmable PROM cell or by programming the last address specified in register 7. In the monitoring mode, the device works as follows.

The remote control 2 on multiplexer 3 selects information from the EPROM. Level O from the third output of console 2 controls prohibit the signal from passing through element 20. The generator 6 does not start at any comparison result and at its second output there is always a level O.

The comparison cycle of information from the EPROM and the RAM 9 is similar to the comparison cycle in the programming mode. If the information on the pulse from the output of the element AND 17 through the element OR 23 of the comparison block 10 compares the information stored in the register 7 and the counter 8. If the equality continues, the work stops and if the inequality through the element OR 22 changes the state of the counter 8 and the comparison cycle repeat- r is. When the information of the EPROM and the RAM 9 is not equal, the trigger 14 is set to O, in the meter 8, the unit is not added.

Through the elements AND 19 and OR 24 level 1 from the output of the unit 1 of the comparison enters the remote control 2 controls. At the fourth output of the control panel 2, level 1 appears, further operation stops.

Claims (1)

Invention Formula A device for recording information in a programmable read-only memory, comprising a first comparison unit, a control panel, a multiplexer, an address register, a photo input unit, a main memory unit, a first counter and a pulse generator, the outputs of the first counter and the pulse generator inputs-outputs are outputs device, the output pulse generator group is connected to the first multiplexer input group, the second group of inputs of which is connected to the output group of the photo input unit, whose input is connected to The first and third control groups of the multiplexer inputs are connected respectively to the first and second control panel outputs, and the third output group of which is connected to the corresponding inputs of the address register, the multiplexer and counter output groups is connected to the corresponding groups of main memory blocks, the output group which is connected to a group of inputs of the pulse former, the first and second inputs of which are connected respectively to the first and second outputs of the first gene pulse generator, characterized in that, in order to increase speed and enhance functionality by monitoring the recorded information, a second pulse generator, the first and second groups of AND elements, trigger, second counter, five AND elements, four OR elements, second the comparison unit, the input, the first and second groups of inputs of which are connected respectively to the outputs of the third element OR, the outputs of the address register and the group of inputs of the first counter, the output of the second comparison unit is connected to the second input House second pulse generator and a second input pul5 This control, the fifth output of which is connected to the fourth input of the second pulse generator, the first output of which is connected to the third input of the first element And, the second input of which is connected to the fourth output of the control panel, the first inputs of the second element And and the second pulse generator, the second the input of the fourth element And the second inputs of the elements of the first and second groups, the groups of inputs of which are connected respectively to the group of outputs of the multiplexer and the group of outputs of the RAM block, and the outputs of the elements And ne the third and second groups are connected to the corresponding inputs of the first comparison unit, the third inputs of the first and second groups of elements are connected to the first installation input of the trigger, the second input of the second element And the output of the first element And, the first input of which is connected to the 5th second output of the first generator pulses, the input of which is connected to the output of the fifth element I, the first input of which is connected to the output of the first comparison unit, the second installation input of the trigger, the counting input of the second counter and the third input of the fourth floor And, the trigger output is connected to the third input of the second element AND, the output of which is connected to the first input of the third OR element, the information input of the second counter and the second input of the second OR element, the output of which is connected to the counting input of the first counter, the information input of which is connected to the second output control panel, the third output of which is connected to the second input of the fifth element And, the first inputs of the fourth and third elements And, the second input of the third element And is connected to the output of the second counter, the outputs the third and fourth elements I are connected to the corresponding inputs of the fourth element OR, the output of which is connected to the first input of the control panel, the first and second inputs of the first element OR are connected respectively to the output of the photo input unit and the sixth 5 output of the control panel, and the output to the third the input of the second pulse generator. five 0 five fie { cpu & .Z 39 fl t W 2 (fjue.S tiS fie. eight 5