JPH0377156A - Electronic computer using ic card - Google Patents

Abstract

PURPOSE:To accelerate the initialization of an electronic computer and at the same time to facilitate the change of a DOS program by reading out the DOS program via an IC card. CONSTITUTION:A DOS program is read via an IC card 6. This card 6 contains a semiconductor memory and also can be connected to a CPU 1 via a bus. Thus the reading speed of the DOS program is higher than an FDD. Furthermore the card 6 can be simply exchanged just with a connector provided at an easy-to-handle place of the main body of an electronic computer since the card 6 has a connector. Then the DOS program can be easily changed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for reading a program called a disk operating system (DO3) of an electronic computer into the main memory.

[Conventional technology]

FIG. 2 is a block diagram showing the memory configuration of a conventional small-scale electronic calculation i (personal computer). In the figure, (1) is the CPU, (2) is the ROM containing the initial program loader (hereinafter referred to as IPLROM), ! 31
is a floppy disk drive (hereinafter referred to as FDD),
+41 is the main memory. Next, the operation will be explained. When the power is turned on, the CPU (11 is IPLR
The program data is read from OMf2) and the initial operation is started. Next, the CPU (1) stores the IPLROM (2).
) according to the program, F D which is quadratic
The DOS program is read from D (31) and necessary parts of the program are stored in the main memory (4) to complete the initialization of the computer.Then, the CPU fil becomes capable of executing various application programs.

FIG. 3 is a block diagram showing an example in which the memory configuration of the computer shown in FIG. 2 has been changed. In the figure (1) to (4)
is equivalent to that shown in FIG. (5) is a DO5ROM containing a DOS program.

Next, the operation will be explained with reference to FIG. The difference is that the DOS program is read from FDD+31 in the case of Fig. 2, while it is read from the DOS ROM (51) in the case of Fig. 3, but the other operations are the same as in the case of 9iS2. be.

[Problem to be solved by the invention]

Since conventional small-scale computers are configured as described above, the time required to read the DOS program from the FDD accounts for a large portion of the time from when the power is turned on until the application program becomes executable. 1-
There is a problem with being happy. This is because the reading speed of the FDD is slow. To shorten this time,
Instead of reading the DOS program from the FDD, for example, as shown in Figure 3, in the same way as IPLROM, it will be faster if the DOS program is loaded into the DO5ROM and read out.However, with this method, the DOS
When changing the type of program or when changing the version of a DOS program, the DO5ROM must be replaced, so there is a problem in that it takes time and effort to change.

This invention was made to solve the above-mentioned problems, and its purpose is to provide an electronic computer using an IC card that has a fast DOS program reading speed and can easily adapt to changes in the DOS program. do.

Means for Solving the Problem] The electronic computer using the IC card according to the present invention is -DO
The S program is read from an IC card.

[Operation] The electronic computer using the IC card in this invention has an I
C card has a built-in semiconductor memory, and CPT
Since it is possible to make a bus connection with J, the reading speed mentioned above is faster than the FDD and can be read at the same speed as the method using the DO3ROM shown in FIG. 3. Furthermore, since the IC card has a connector, if the connector is provided in a convenient location on the computer body, the IC card can be easily replaced, making it easy to change the DOS program.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of an electronic computer using an IC card. In the figure, (1) to (4) are the same as those shown in the conventional example of FIG. 2, so their explanation will be omitted. (6) is an IC card.

Next, the operation will be explained. When the power is turned on, the CP
Uill reads program data from the IPL ROM (2) and starts initial operation. Next, the CPU
(1) Reads the DOS program from the IC card (6) according to the program in the IPLROM+21, and if necessary, inserts a part of this program into the main memory 14)1, and uses the DOS program in the IC card (6). Controls FDD (31) and executes reading of the application program.

〔Effect of the invention〕

As described above, according to the present invention, since the DOS program is read from the IC card, the initialization of the computer becomes faster and the DOS program can be easily changed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the memory configuration of a computer using an IC card according to an embodiment of the present invention, FIG. 2 is a block diagram showing the memory configuration of a conventional computer, and FIG. 3 is a block diagram showing the memory configuration of a conventional computer. FIG. 2 is a block diagram showing an example of a partial change in the memory configuration of an electronic computer. In the diagram (1), the CPU 121 is the IPLROMi31.
is an FDD, (4) is a main memory, and (6) is an IC card. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] An electronic computer using an IC card, characterized in that a disk operating system program is read from the IC card.