JP2000276894A - Rom writer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To write serial numbers differing for each PROM, by comparing addresses presented by storage elements storing them with those of common data, writing the common data in PROMs when both addresses are not matched with each other, and simultaneously writing the serial numbers differing for each PROM in all the PROMs connected with PROM connecting parts when matched with each other. SOLUTION: A control part 1 sets addresses, where serial numbers inputted from an input part 3 are written, in a serial number write address storage part 13, and sets the serial numbers in serial number storage parts 14A-14C sequentially from the initial value. When PROMs are connected with PROM connecting parts 10A-10B, the control part 1 sequentially reads data from a common data storage part 4, and outputs the data to be written in the PROMs and the addresses to a data output part 5 and an address output part 6. Based on the comparison result by a comparator 7, a selecting part 8 outputs the common data outputted by the data output part 5 or the serial numbers stored in the serial number storage parts 14A-14C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION Generally, a device for simultaneously writing the same data to a plurality of PROMs is called a gang writer. The present invention relates to a gang writer.

[0002]

2. Description of the Related Art There are non-volatile and electrically writable devices such as EEPROMs and flash memories. These devices are called a PROM, and a device that writes programs and data to the PROM is called a ROM writer.

[0003] As a ROM writer, there is an apparatus called a gang writer which can write the same data to a plurality of PROMs at once. The gang writer can write the same data to a plurality of PROMs at one time, so that the work efficiency is high. Japanese Patent Application Laid-Open No. 6-309882 is a known example of this gang writer.

[0004]

However, in a PROM mounted on a network device, it is necessary to write a serial number indicating an individual identification number of the network device in the PROM, and a gang writer for writing the same data at a time is required. Cannot be used. For this reason, it is necessary to prepare and write data including a serial number one by one, and the work efficiency is poor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a gang writer capable of writing a different serial number for each PROM, and to improve the working efficiency.

[0006]

In order to achieve the above object, the present invention provides a method for storing a plurality of PRs connected to one ROM writer.
A memory for storing common data for the OM, and a PROM
A serial number storage unit for storing a serial number for each
An address storage unit is provided for storing an address for writing a serial number in the ROM. The control unit that controls the ROM write calculates a serial number for each PROM, and sets the serial number of the PROM in each serial number storage unit.

Next, an address for writing the serial number into the PROM is set in the address storage unit. The ROM writer compares the address written in the PROM with the value set in the address storage unit.
Write the value of the serial number storage section to M. If they do not match, all P
A selection device for writing data common to the ROM is provided. With this selection device, the PROM which differs only in the serial number at the same time
Can be written.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.
FIG. 3 is a block diagram showing a writer configuration. 1 is a control unit, 2
Is a display unit, 3 is an input unit, 4 is a common data storage unit, 5 is a data output unit, 6 is an address output unit, 7 is a comparison unit, 8 is a selection unit, 10A to 10C are PROM connection units, and 11 is write control. Section, 13 is a serial number write address storage section, 14A-
14C is a serial number capable part.

The control section 1 is a block for controlling the entire ROM writer, and comprises a CPU, a program necessary for the operation of the CPU, and a memory for storing the program.

The display 2 is composed of devices such as a CRT and an LED, and the input unit 3 is composed of a switch and a keyboard. The common data storage unit 4 includes a memory or a desk device, and stores data common to all PROMs. PR
The OM connection units 10A to 10C are configured by connectors, and connect a PROM to the connectors.

The write control unit 11 reports to the control unit 1 the function of generating a pulse for writing data to the PROM according to the instruction of the control unit 1 and whether or not the PROM is connected to the PROM connection units 10A to 10C. It has the function to do.

The data output unit 5 outputs the common data stored in the common data storage unit 4 to the selection unit 8 according to an instruction from the control unit 1. The address output unit 6 outputs an address corresponding to the data output from the data output unit 6.

The serial number write address storage unit 13 and the serial number storage units 14A to 14C are constituted by registers or memories.

The comparator 9 is a circuit for comparing the address output from the address output unit 6 with the address stored in the serial number write address storage unit, and reports the comparison result to the selection unit 8.

The selector 8 selects one of the values stored in the serial number storages 14A to 14C or the data output by the data output unit 5 according to the comparison result of the comparator 7, and selects the PROM connection units 10A to 10C. PRO connected to 10C
Output to M.

An operator operating the ROM writer inputs an address for writing the serial number into the PROM and an initial value of the serial number from the input unit 3.

The control section 1 sets an address for writing the serial number input from the input section 3 in the serial number write address storage section 13. The control unit 1 sets the initial value of the serial number input from the input unit 3 in the serial number storage unit 14A. Next, the serial number storage unit 14
The next serial number set in A is calculated and set in the serial number storage unit 14B. Further, the next serial number set in the serial number storage section 14B is calculated and set in the serial number storage section 14C.

The operator sequentially connects the PROMs to the PROM connection units 10A to 10C. Write control unit 11 is a PROM
When detecting that the PROM is connected to the connection units 10A to 10C, the control unit 1 is notified of the connection of the PROM. When the control unit 1 detects that at least one PROM is connected to the PROM connection unit, the control unit 1 sequentially reads data from the common data storage unit 4 and writes the data to the data output unit 5 and the address output unit 6 in the PROM. Start the process of outputting the address.

When all the common data is output from the data output unit 5 and the address output unit 6, the common data is sequentially output from the beginning. This process is repeated until there is an instruction from the input unit 3.

The control unit 1 sends a P
When receiving a report that the PROM is connected to the ROM connection units 10A to 10C, the address output unit 6 stores the address output when the report is received for each of the PROM connection units 10A to 10C, and the write control unit 11 To output a write pulse to the PROM connected to the PROM connection units 10A to 10C.

At this time, the address written in the PROM is the address output from the address output unit 6, and the data written is the data output from the selection unit 8.
The data output from the selection unit 8 is the common data output from the data output unit 5 or the serial number storage units 14A to 14A.
4C is one of the stored serial numbers, and is selected based on the comparison result of the comparator 7.

The comparator 7 always has an address output from the address output unit 6 and a serial number write address storage unit 13.
Are compared. If the values match, the output of the selection unit 8 is output to the serial number storage units 14A to 14C. If the values do not match, the data output from the data output unit 5 is output. Control to output.

The control unit 1 includes PROM connection units 10A to 10C
By comparing the address output by the address output unit 6 stored when each report is received with the address currently output by the address output unit 6, whether or not all the common data has been written to the PROM is determined. to decide.

When the control unit 1 determines that the writing of all the common data has been completed for each PROM, the operation of the write control unit 11 of the completed PROM is stopped. Further, the value of the serial number storage is updated. For example, the PROM connection unit 10A
When the writing to the PROM connected to is completed, the value of the serial number storage unit 14A is updated.

In this embodiment, since three PROMs can be connected, a new serial number storage unit 14A
Is obtained by adding 3 to the value of the serial number storage unit 14A. After updating the serial number storage unit 14A, the control unit 1 displays the PRO connected to the PROM connection unit 10A on the display unit 2.
It indicates that the writing operation of M is completed. The operator exchanges the PROM of the PROM connection unit 10A according to the display 2. When detecting that the operator has replaced the PROM, the writing control unit 11 reports to the control unit 1 that a new PROM has been mounted.

The control unit 1 receives a PROM from the write control unit 11.
Upon receiving a report that the PROM has been connected to the connection unit 10A, the P
The address output by the address output unit 6 when the report is received by the ROM connection unit 10A is stored, and the write control unit 1
PROM connected to the PROM connection unit 10A by driving the PROM 1
To output a write pulse.

By repeating this process, the PROM
In the PROM connected to the connection unit 10A, the serial number is a multiple of 3 of the value input by the operator from the input unit 3, and the other data is written with the same data as the data stored in the common data storage unit.

Similarly, in the PROM connected to the PROM connection section 10B, a value obtained by adding one to a multiple of 3 of the serial number input by the operator from the input section 3 is written, and the PROM is connected to the PROM connection section 10C. In the PROM, a value obtained by adding 2 to a multiple of 3 of the serial number input by the operator from the input unit 3 is written.

[0030]

As described above, according to the present invention, like a PROM mounted on a network device, only a serial number including a serial number indicating an individual identification number of the network device is different, and other data is the same. PR
It is possible to write multiple OMs at once,
The work efficiency of writing is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Control part, 2 ... Display part, 3 ... Input part, 4 ... Common data storage part, 5 ... Data output part, 6 ... Address output part, 7 ...
Comparison section, 8 selection section, 10A to 10C PROM connection section, 1
1: Write control unit, 13: Serial number write address storage unit, 14A to 14C: Serial number possible unit.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidehito Takewa 5-2-1, Omikacho, Hitachi City, Ibaraki Prefecture Inside the Omika Plant of Hitachi, Ltd. (72) Inventor Hideji Ishikura 5-chome Omikacho, Hitachi City, Ibaraki Prefecture No. 2 In the Hitachi, Ltd. Omika factory (72) Inventor Koji Matsuda 5-2-1, Omika-cho, Hitachi, Ibaraki F-term in the Hitachi, Ltd. Omika factory F-term (reference) 5B003 AA00 AB00 AC06 AD03

Claims (2)

[Claims] 1. A ROM writer comprising a plurality of PROM connections and capable of simultaneously writing a plurality of PROMs, a storage element for storing common data to be written commonly to all PROMs, and a serial number different for each PROM. And a storage element for storing an address for writing a serial number in the PROM. The address of the common data is compared with the address indicated by the storage element for storing the address. Write to PROM,
If they match, a different serial number is assigned to each PROM.
A ROM writer for simultaneously writing data in all PROMs connected to a ROM connection unit. 2. The method according to claim 1, wherein each time a PROM connected to said PROM connection section is replaced, a value of a storage element for storing a serial number provided for each PROM is calculated.
A ROM writer having a function of updating a serial number of a PROM newly connected to an OM connection unit.