JPS59184947A - Storage system of program - Google Patents

Abstract

PURPOSE:To simplify the circuit constitution by storing the specific key codes to the memory parts of both basic and optional function programs respectively and discriminating the presence or absence of the optional function in response to the presence or absence of the specific key codes when they are read out. CONSTITUTION:The basic function program is stored to ROM1-ROMn-1 respectively, and an optional program is stored to an ROMn. The specific key codes X of plural digits are stored to the prescribed addresses of a basic function program, e.g. ROM2 and the optional function program. Then a device is started to read the key codes of the ROMn and the ROM2, and then the optional function program is set when the coincidence is obtained between both ROMs. While no optional program is set and the initialization is carried out when no coincidence is obtained between both ROMs. Then processes A-D are carried out by the basic function program. When no optional program is available, the process A is reset; while processes E-G are carried out by the optional program and then the process A is reset when the optional program is available. Thus the change is facilitated for loading/unloading of optional program. This system is suitably applied to a vending machine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a program storage method used in a vending machine.

[Prior art and its problems]

As the functions of vending machines become more diverse, it is necessary to store programs for various options in the RONi of the control device in the vending machine according to specifications requested by users.

FIGS. 1 and 2 show a conventional program storage system for this type of control device, in which processing A to processing are NOIJ, programs of this specification, and processing IL to F are optional function programs. On the other hand, ROM 1 to LZ-OMn 1 store processes A to 1) of the basic specification program.
Processing E to processing G of the optional function program are stored in ROM n.

In this type of storage system, the optional function program and the basic specification program are connected on an assembly basis, so the optional function cannot be simply removed according to the user's preference even if the optional function is not required.

That is, the ROM storing each processing program has a storage area storing the initialization program at address O, and ROM1 to ROM n-l for processing from processing A to processing.
An address is attached to j1\i, and optional machine fihi processing I! The address of ROM n that stores , , I%G follows the address of ROM n -1.

Therefore, if the optional function is not required, ROM row 1
Programs or processes A to 3% that are written into
A processing program that does not advance the ROM address counter to the address of ROM n must be constructed somewhere in the program (l), and it is not easy to change that processing program. Furthermore, the method of separately selecting a basic function program and a program including optional functions in addition to the basic functions results in an increase in the number of program versions.

[Purpose of the invention]

This invention was made to eliminate the above-mentioned drawbacks, and when a storage device storing an optional function program is added or removed, the processing program is automatically changed according to the change in the storage device. The object of the present invention is to provide a control program storage method that enables the following.

〔Example〕 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 3, ROM1 to ROMn-1 are ROMs that store basic function programs for controlling the vending machine, and ROMn is a ROM that stores optional function programs for the vending machine. ROM
A multi-digit unique key code X is stored in any one of l to TJ, OM n -1, for example, ROM2, and a predetermined address in ROM n.

Note that IL'OM n is configured to be detachably attached to and detached from the control device via a connector.

Figure 4 shows a program [J] that processes the contents of the ROM shown in Figure 3.
This is a flowchart showing the program. Immediately after the start, the key code of ROM2 and the key code of ROM n are read in step S1, and the key code X is compared in step S2. If ROM n for optional functions is connected to the control device, both key codes match and the process proceeds to step S3, where an option flag is set.

Thereafter, initialization is performed in step S5, and steps 56 to S
Step 9 executes the basic function processes A, B, C, and D. At step 510, it is determined whether the option flag cassette is set. If the option flag is set, proceed to steps 511, 512, and 313, and execute processing 1;, , F, and G of the option function program.
Return to step S6.

On the other hand, if ROM n for optional functions has been removed, the key code Ru.

Execute the basic function program up to step S9 below,
The option flag is determined in step 510, and the process returns to step S6. Therefore, steps Sll~51
．． 3 is not executed.

As detailed above, the present invention stores a predetermined key code in the storage means that stores the basic function program, and also stores a predetermined key code in the storage means that stores the optional function program. Then, before initializing the device, compare both key codes, determine whether there is an optional function according to whether there is a predetermined relationship (in this example, they match), and execute the optional function processing program. ,
Since the non-execution is determined, it is extremely easy to install and remove optional functions, and the basic function program does not require any changes, and the storage device in which the basic function program is written can be fixed. , standardization of programs and storage devices becomes easier.

[Brief explanation of drawings]

Figure 1 is a memory map of a ROM with a conventional storage method;
The figure is a flowchart showing the processing procedure of a program in the storage method using the ROM shown in Fig. 1, Fig. 3 is a memory map of the ROM of one embodiment of the present invention, and Fig. 4 is a flowchart showing the processing procedure of a program using the ROM shown in Fig. 3. 3 is a flowchart showing a program processing procedure in the storage method. IL OM l ~ ROM n -1...ROM (
(For basic functions) ROM n...ROM (For optional functions) X...Key code. Patent Applicant: Fuji Electric Manufacturing Co., Ltd., Mr. Ji, Mr. ZP, Mr. Ao, Mr. Yama, and 2 others Figure 1 Figure 2 Figure 4 Figure 3

Claims (1)

[Claims] (1) A key code of predetermined digits is stored in each of the basic function program storage means and the optional function program storage means, and the key codes of both storage means are compared at the time of execution of processing, and both key codes are determined to have a predetermined relationship. A program storage method characterized in that it is determined that the program is on the optional function side when the program is on the side of the optional function.