JPH01207822A - Data converter - Google Patents

Abstract

PURPOSE:To directly output logical test pattern data for an LSI of a JIS format from a terminal by converting the logical test pattern data for the LSI of a binary format prepared by a general purpose computer into the alphanumeric data of the JIS format. CONSTITUTION:A data input means 1 inputs four bits in order from the logical test pattern of a prepared binary format and stores them to the low order four bits of a binary data storing means 8. Next, the data of eight bits stored in the means 8 are compared to 00001010 by a comparing operating means 6, and when the data are less than it, 00110000 is stored to an adding constant storing means 9. When the data are more than 00001010, 00110111 is stored to the means 9. Next, the data stored in the means 8 and the data stored in the means 9 are logical-added by an adding operating means 7, and the result is stored to a JIS data storing means 10. Moreover, JIS format alphanumeric data converted from the means 10 are fetched and are outputted by a data output means 5.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a data conversion device for converting binary data into JIS format alphanumeric data, and in particular, the present invention relates to a data conversion device for converting binary data to JIS format alphanumeric data, and in particular, to a data conversion device for converting binary format data into JIS format alphanumeric data. The present invention relates to a data conversion device that converts pattern data into JIS format alphanumeric characters.

[Conventional technology]

Generally, LSI logic test patterns are created mainly on a general-purpose computer using a logic simulator or a test pattern generator, and are expressed in a binary format. Conventionally, this logical LSI test pattern data for LSI in binary format has been output as is on a general-purpose computer in binary format to a medium such as an MT, paper tape, or floppy disk, and then supplied to an LSI tester.

[Problem to be solved by the invention]

In the conventional logical test pattern data conversion method described above, the test pattern data is extracted on a general-purpose computer, so for those who are using this general-purpose computer from a terminal far away from the general-purpose computer, it is difficult to output the test pattern data on the general-purpose computer. This method has the disadvantage that it requires extra effort to pick up the MT or other media that has been removed or have it sent.

SUMMARY OF THE INVENTION An object of the present invention is to solve such problems and provide a data conversion device that can automatically convert JIS format data such as logical test pattern data.

[Means to solve the problem]

The data conversion device of the present invention has a binary type 4-pin 1-
an input means for inputting data; a binary data storage means for temporarily storing the data of the input means; a comparison means for determining the size of the binary data from the binary data storage means by comparing it with predetermined data; an addition constant storage means for storing an addition constant determined by the determination result of the comparison calculation means; an addition means for adding the 4-bit data to the addition constant according to the determination result of the comparison calculation means and outputting JIS type data; The present invention is characterized by comprising a JIS data storage means for storing JIS type data of the means, a data output means for outputting data from the JIS data storage means, and a control means for controlling each of these means.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

In the figure, 1 is data input means, 2 is control means, 3 is calculation means, 4 is storage means, and 5 is data output means.

As shown in detail in FIG. 2, the calculation means 3 includes a comparison calculation means 6. The addition calculation means 7 is constructed, and the storage means 4 is composed of:
Binary data storage means8. Addition constant storage means 9. J.I.
It is composed of S data storage means 1o.

The data input means 1 sequentially inputs four hits from the created logical test pattern data in binary format, and stores them in the lower four bits of the binary data storage means 8 consisting of eight hits 1 to 8. The upper four bits of this data storage means 8 always store "oooo".

Next, the comparison calculation means 6 converts the 8-bit data stored in the binary storage means 8 into 'o o o'.

1010'', and if the data stored in the binary data storage means 8 is smaller than '00001010', the addition constant storage means 9 consisting of 8 bits stores ``00110000'', and the data becomes '00001010''. 0000
1010" or more, '001' is stored in the addition constant storage means 9.
10111” is stored.

Next, in the addition calculation means 7, the binary data storage means 8
The data stored in . . . and the data stored in addition constant storage means 9 are logically added together, and the result of the addition is stored in JIS data storage means 10 consisting of 8 bits.

This includes all binary format data expressed in 4 bits, 0000=O(H), 0001-1(H),
0010=2 (H), 0011-3 (H),
0100=4 (H), 0101=5(H),
0110=6 (H), 0111=7
(Hn.

1000=8 (H), 1001=9 (H)
, 1010=A(H), 101] −B(H
), 1.100-C(H), 1 101=D
(H), 1 1 10=E(H), 11
]-1=F (H) are 30(H) and 31, respectively.
(H), 32 (H), 33 (H).

34 <H), 35 (H), 36 (H), 3
7 (H).

38 (H), 39 (H), 41 (H), 42
(H).

43 (H), 44 (H), 45 (H), 4
6 (H).

JIS format alphanumeric characters 0'', ``1'', ``2°+, ++ 3 ++ with 8-bit internal code.
, u 41J pa 5° I , +16 ++ ,
1171+, +181′, Pa9′″”A
"'"B'", "'C", "D"', "E"", 'F'
''. Note that (H) means hexadecimal representation.

Furthermore, the data output means 5 stores the JIS data storage means 10.
The converted JIS format alphanumeric data is extracted and output. By applying this to all binary format logic test pattern data, it can be converted into JIS format logic test patterns.

〔Effect of the invention〕

As explained above, the present invention allows logical test pattern data for LIS in binary format created on a general-purpose computer to be
By converting it into S-format alphanumeric data, this JIS-format logic test pattern for LSI can be directly output on this terminal using a reverse procedure with a procedure for character transfer between a general-purpose computer and its terminal. It has the effect of being able to.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a detailed block diagram of the calculation means and storage means shown in FIG. 1...Data input means, 2...Control means, 3...Calculation means, 4...Storage means, 5...Data output means,
6... Comparison calculation means, 7... Addition calculation means, 8...
- Binary data storage means, 9... addition constant storage means, 10... JIS data storage means.

Claims (1)

[Claims] an input means for inputting 4-bit data in binary format;
A binary data storage means for temporarily storing the data of this input means, a comparison means for comparing and determining the size of the binary data from this binary data storage means with predetermined data, and a size determined by the determination result of this comparison means. an addition constant storage means for storing an addition constant; an addition means for adding the 4-bit data to the addition constant according to the judgment result of the comparison calculation means and outputting JIS format data; and storing the JIS format data of the addition means. A data conversion device comprising: JIS data storage means; data output means for outputting data from the JIS data storage means; and control means for controlling each of these means.