JP2008142204A - Game machine, and method and program for generating random number in game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To generate a random number immediately after power is on in a sub-board of a game machine. <P>SOLUTION: In the game machine provided with a main board 40 for performing processing of game control and generating processing information and a sub-board 40b for obtaining the processing information generated by the main board to perform prescribed output mode processing, the main board includes: a storage part 40-1 capable of reading/writing data; a power-on detection part 40-2 for detecting that the power is on; a checksum calculation part 40-3 for obtaining checksum of a pre-determined area of the storage part on the basis of an output of the power-on detection part; and a command transmission part 40-4 for generating a command including the checksum and transmitting it to the sub-board. The sub-board 40b includes a command receiving part 40b-1 for receiving a command and a random number generation part 40b-2 for generating a random number with the checksum included in the received command as a seed of the random number. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gaming machine, a random number generation method and a program in the gaming machine, and more particularly to a random number generation method in a sub-board.

  A ball ball game machine (a so-called pachinko machine) installed in a game machine installation store (hall) or the like uses a game ball (also called a game medium) to play a game. The borrowed game balls are launched to the board surface provided on the game board of the ball game machine, and a predetermined number of game balls are paid out each time the game balls enter a predetermined winning opening. The game balls to be paid out are called prize balls.

There are the following winning holes provided on the board of the ball game machine.
(1) Ordinary winning device (2) Start chucker (starting winning device)
(3) Attacker (Large winning device)
(4) Through chucker (winning chucker)

The start chucker (starting winning device) is also called a specific winning device. When a game ball is accepted by the start chucker (start prize-winning device) and enters the winning state, the prize ball is paid out and an electronic lottery is performed. In the case of winning, the game state is advantageous to the player from the normal state. Thus, the attacker (large winning device) is opened.
The attacker (large winning device) is also called a special winning device.

  The through chucker (winning chucker) does not pay out the winning ball directly, but is included in the winning slot in this specification. When it is detected that the game ball has passed through the through chucker (winning chucker), an electronic lottery is performed. When winning, a predetermined start chucker (starting winning device) is set so that a game state is advantageous to the player. The time is released to make it easier for the game ball to enter the start chucker (start prize winning device). The game ball received by the through chucker (winning chucker) moves on the board as it is and is received by another winning port or discharge port (out port).

  In recent years, pachinko machines are known that generate special benefits for players by the display screen of a variable display device (center accessory) provided in the center of the game board. For example, when the symbol displayed on the variable display device (center accessory) fluctuates and stops, an operation called “winning” starts, and a large winning device provided below the game board surface continues. In some cases, a large number of prize balls are paid out to the player because a large number of winnings are obtained during that time.

  Pachinko machines and other gaming machines have built-in microcomputers that enable the program to control lottery, winning, payout, and production. This type of gaming machine performs a game control process (such as a process of paying out a predetermined number of game balls each time a game ball enters a predetermined winning opening) and generates a processing information thereof, And a sub-board that obtains processing information generated on the board and performs predetermined output mode processing (such as effects on a variable display device).

  The sub-board receives a command from the main board, and performs effects and the like according to the command. Only one command flows from the main board to the sub board. Conversely, no command or the like is issued from the sub board to the main board.

  There is a case where a random number to be used for predetermined output mode processing executed by the sub-board is generated, and processing such as different effects is performed for each obtained random number. The sub-board generates a random number using a known algorithm.

  With reference to FIG. 8, a description will be given of random number generation in a conventional gaming machine, particularly random number generation processing at power-on. This figure schematically shows the operation immediately after the main board and the sub board are powered on. The actual initialization process includes various things and is more complicated. Further, the random number generation process is not always executed at the end of the initialization process. When the power is turned on at time t1, the main board executes a predetermined initialization process, and after that (after time t3), executes a normal game control process. The sub-board also executes a predetermined initialization process, and after that (after time t4), the normal output mode process is executed, but prior to that, a random number generation process for use in the output mode process is performed (time t2). And t4).

  On the sub-board, random numbers are generated by software using a known algorithm. For example, a random number is acquired by an expression obtained by simplifying the linear congruential method or the MT method. Another algorithm is an M-sequence random number. For M-sequence random numbers, it is necessary to prepare n (for example, 8) arrays (called seeds) in advance. In the conventional gaming machine, the seed of the random number generated by the initialization process of the sub board is the same every time the power is turned on.

JP 2005-185375 A “Game Machine and Random Number Generation Method and Program in Game Machine” In order to improve the randomness of the random number, the value of the timer counter is read at the reception timing of the command sent from the main board to the sub board. A random number is generated using this as a seed of random numbers. Since the command reception timing is irregular, the seeds of the random numbers vary and the randomness of the generated random numbers is improved.

  In order to generate random numbers, it is necessary to prepare data called “seed”. The seeds are preferably different each time a random number is generated (at least every time the power is turned on). If the seeds are the same, the generated random numbers will be the same and can be predicted. If the seed of the random number generated by the initialization process of the sub-board is the same every time the power is turned on, for example, the image displayed immediately after the power is turned on can be the same every time, or the change in the image after that can be predicted It becomes like this. If the image display pattern is fixed, the player may get bored.

  In short, in the sub-board of the conventional gaming machine, there is a problem that the same random number is generated because the initialization timing of the random number and the generated seed are the same. In order to generate a different random number each time, it is conceivable to use a timer counter as in Patent Document 1 or to use other random events (for example, the timing at which a game ball enters a winning opening). If the normal processing is not performed for a while, the random number cannot be generated, and the random number cannot be used immediately after the power is turned on. This causes a problem that the display image immediately after power-on for the same model is always the same.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a gaming machine capable of generating a random random number immediately after power-on in a sub-board, a random number generation method in the gaming machine, and a program. And

The present invention provides a gaming machine including a main board that performs processing of game control and generates processing information, and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing.
The main board includes a storage unit capable of reading and writing data relating to a game control process, a power-on detection unit that detects power-on, and a predetermined value of the storage unit based on an output of the power-on detection unit. A checksum calculation unit for obtaining a checksum of the area, and a command transmission unit that generates a command including the checksum and sends the command to the sub-board.
The sub-board includes a command receiving unit that receives the command, and a random number generating unit that generates a random number by using the checksum included in the received command as a seed of random numbers.

  It is preferable to provide a backup power source that supplies power to the storage unit when the power is off.

The present invention provides a gaming machine comprising: a main board that performs processing of game control and generates processing information; and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing. A method of generating random numbers on a board,
Detecting power on at the main board;
Obtaining a checksum of a predetermined area of the storage unit of the main board when power on is detected in the main board;
Generating a command including the checksum and sending the command from the main board to the sub-board;
Receiving the command at the sub-board;
Generating a random number by using the checksum included in the command received by the sub-board as a seed of random numbers.

The present invention provides a gaming machine comprising: a main board that performs processing of game control and generates processing information; and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing. A program for generating a random number on a board,
In the CPU of the main board,
Detecting power on; and
Obtaining a checksum of a predetermined area of the storage unit of the main board when power on is detected; and
Generating a command including the checksum and sending the command from the main board to the sub-board.

The present invention provides a gaming machine comprising: a main board that performs processing of game control and generates processing information; and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing. A program for generating a random number on a board,
In the CPU of the sub-board,
Receiving a command from the main board;
When the received command includes a checksum that should be used as a random number seed, a checksum is extracted from the command and a random number is generated by using the checksum as a random number seed. It is a program to make it.

The program according to the present invention is recorded on a recording medium, for example.
Examples of the medium include EPROM devices, flash memory devices, flexible disks, hard disks, magnetic tapes, magneto-optical disks, CDs (including CD-ROMs and Video-CDs), DVDs (DVD-Videos, DVD-ROMs, DVD-s). RAM), ROM cartridge, RAM memory cartridge with battery backup, flash memory cartridge, nonvolatile RAM cartridge, and the like.

  A medium is a medium in which information (mainly digital data, a program) is recorded by some physical means, and allows a processing device such as a computer or a dedicated processor to perform a predetermined function. is there.

  According to the present invention, in the initialization process immediately after the power is turned on, the checksum of the storage unit of the main board is sent to the sub board and used as a seed of random numbers, so that the sub board changes each time the power is turned on. You can get a random seed. Therefore, a random number with improved randomness can be generated immediately after the power is turned on. This can solve the problem that, for example, the image displayed immediately after the power is turned on becomes the same every time, and the subsequent change in the image can be predicted.

An outline of the structure of the ball game machine will be described with reference to FIGS. 1 and 2.
First, the external structure of the gaming machine according to the embodiment of the present invention will be described with reference to FIG.
The outer frame 50 is a wooden frame member having a vertical rectangular shape for fixing to an installation location (island facilities or the like) provided in a gaming machine installation sales shop.
The main body member 51 is a member that is provided inside the outer frame 50 and serves as a longitudinal rectangular gaming machine base body that is rotatably attached to the outer frame via a hinge portion 51a. The main body member 51 is formed in a frame shape and has a space portion inside thereof.
The opening frame door 52 is mounted on the front surface of the main body member 51 on the front side of the gaming machine so as to be openable and closable, and is configured in a frame shape so that the inside is an opening. It is a door member.
A transparent plate member made of glass or resin is provided at the opening of the opening frame door 52, and an electrical decoration 52a, a speaker 52b, and the like are attached in the vicinity of the opening.
A game board (not shown in FIG. 1), which will be described later, is detachably attached to the main body member 51 using a predetermined fixing member so as to face the space of the main body member 51. After the game board is mounted on the main body member 51, the game area can be observed from the opening.

The door 53 with a ball tray is a door member that has at least a ball tray for storing a game ball that is attached to the lower side of the main body member 51 on the front side of the gaming machine so as to be locked and openable. In addition, the following members are attached to the door with a ball tray in the present embodiment.
(1) A ball tray in which a plurality of game balls can be stored and a passage for guiding the game balls to the firing drive device 48 is provided.
(2) A rotary operation handle 48b for performing an operation of launching the stored game ball guided to the launch drive device 48 to a game area provided on the board surface 11 of the game board 10.
(3) A ball lending-related operation unit provided with buttons for instructing a read-in related to reading a paid card and a lending process related to a borrowed game ball.
(4) A storage ball discharge operation button for a ball tray for releasing the game ball stored in the ball tray into a game ball collecting container (common name, dollar box).

Next, an internal configuration of the gaming machine according to the embodiment of the present invention will be described with reference to FIG.
Reference numeral 40 denotes a main board (control unit) which is provided through the main body member 51 or the game board 11 or a support member provided to these, and performs electrical game control processing to generate main processing information.
Reference numeral 40b denotes a sub board (not shown) that is provided via the main body member 51 or the game board 11 or a support member provided to the main body member 51 and performs processing for performing predetermined output mode processing by obtaining processing information generated by the main board 40. Sub-control device).
A payout control unit 42 performs payout control of prize balls.
43 is a game ball payout device for paying out game balls.
Reference numeral 44 denotes a lamp control unit that controls a lamp (not shown) and the electric decoration 52a.
An acoustic control unit 46 generates sound by controlling and driving the speaker 52b.
49 is a control device for controlling the firing drive device 48, and is a launch control device for controlling the launch of a game ball to a game area provided on the board surface via a rotary operation handle 48b.

FIG. 3 is a front view of the game board of the gaming machine.
In FIG. 3, reference numeral 11 denotes a board surface of the game board 10. The board surface 11 changes the direction of the guide rail 12, the discharge port (out port) 13 that guides the game ball that has fallen through the substantially circular game area defined by the guide rail 12, and the direction of the game ball that moves in the game area. It is a rectangular board surface provided with a plurality of obstacles such as the nailing 14 and the windmill 14a.

  The game area of the board surface 11 described above is partitioned and formed into a substantially circular shape by the guide rail 12 (including a sliding part for sliding the game ball and a regulation part for regulating the game ball), and the movement of the game ball that has been launched It is an area that regulates the range. A restricting portion is provided to follow the sliding portion. The sliding portion is arranged on the board surface 11 in a spiral as a whole.

  The discharge port (out port) 13 is a collection opening provided at a position where the game balls thrown into the game area converge.

  The game nails as the obstacles 14 are a plurality of rod-shaped members that are driven into appropriate positions on the board surface 11 in order to make the movement direction irregular by contacting with the game ball or to restrict the movement direction.

Reference numeral 30a denotes a variable display device (center accessory) that is provided at the center or slightly above the game area and has one or more variable display sections such as an effect display lamp and an LCD (liquid crystal display device).
30b is a through chucker (winning chucker) as a winning part.
30c is a normal winning device having a normal winning opening.
30d is a start chucker (start winning device) having a start winning opening.
30e is an attacker having a big prize opening.
In the following description, 30b to 30e may be collectively referred to as a winning opening 30 or the like.
Although not shown, the ball passage detectors 20b, 20c, 20d, and 20e are provided inside the 30b, 30c, 30d, and 30e (the symbols in parentheses in the figure mean that). ).

The start winning device of the start chucker 30d is also called a specific winning device, and the big winning device of the attacker 30e is also called a special winning device.
The start chucker (start winning device) 30d is provided with movable pieces on both sides for expanding and contracting the opening range of the winning opening, making a variable display by winning a game ball and winning a prize for a player. Device.
The attacker (large winning device) 30e is driven and controlled by a movable door that has an open state that exposes the winning port and a closed state that closes the winning port. Compared to other winning devices by winning game balls It is a winning device that allows more prize balls to be obtained.

FIG. 4 is a functional block diagram of the gaming machine according to the embodiment of the present invention.
Reference numeral 40 denotes a main board that performs electrical game control processing and generates main processing information. The main board 40 receives the signals of the ball passage detectors 20b to 20e that move (flow down) the game area and detect the game balls that have passed through the winning holes 30b to 30e, respectively, and pass the gaming balls through the winning holes 30b to 30e. Depending on the lottery / determination,

  The main substrate 40 includes a readable / writable memory (storage unit) 40-1, a power-on detection unit 40-2 that detects power-on (specifically, supply of power to the main substrate 40), and a memory 40. −1, a checksum calculation unit 40-3 that calculates a checksum (check total) for part or all of the contents, and a command transmission unit 40 that generates a command including the calculated checksum and transmits the command to the sub-board 40b. -4.

  The memory 40-1 is connected to a backup power source such as a battery, and the contents are retained even while the power is off.

  The power-on detection unit 40-2 includes, for example, a resistor and capacitor circuit and / or hardware such as an IC. The power-on detector 40-2 is for operating at least the checksum calculator 40-3 and the command transmitter 40-4 when the power is turned on. Usually, when the power is turned on, an initialization process is executed. Therefore, the checksum calculation unit 40-3 and the command transmission unit 40-4 may be operated. In this case, the power-on detection unit 40-2 can be shared with a conventional CPU reset circuit (power-on reset circuit).

  Reference numeral 40b denotes a sub-board that obtains processing information generated by the main board 40 and performs predetermined output mode processing. The sub board 40b includes a command receiver 40b-1 that receives a command from the command transmitter 40-4 of the main board 40, and a random number generator 40b that generates a random number using a checksum included in the received command as a seed of random numbers. -2.

  Reference numeral 41 denotes a display control unit that turns on an effect display lamp of the variable display device (center accessory) 30a and displays an image related to the effect on an LCD (liquid crystal display device). The display control unit 41 determines the identification display information (variable display device) according to the result of the electronic winning / losing lottery based on the establishment of a predetermined condition on the main board 40 (for example, winning of a game ball to the start winning device 30d). It is also a display control device that performs a stop display after variably displaying (center effect) (displayed on the LCD of 30a). Furthermore, the display control unit 41 determines the identification lighting information (variable) according to the result of the electronic determination of whether or not the predetermined condition is satisfied in the main board 40 (for example, the passing of a game ball to a predetermined passage opening). It is also a display control device that performs stop display after variably displaying the display device (center accessory) 30a, which is lit and displayed on the effect display lamp.

  The LCD (not shown) of the variable display device (center accessory) 30a is a device that variably displays a specific symbol related to the big hit state and displays a background image and various characters in an animated manner. When it is detected that the game ball has passed through the start chucker (start winning device) 30d, the displayed symbol fluctuates for a predetermined time, and the lottery is drawn when the game ball start chucker (start winning device) 30d passes. The stop symbol determined by the random number for lottery is displayed on the LCD and stopped. The attacker 30e includes an opening / closing plate that can be opened forward. When the symbol after the LCD fluctuation stops is a winning symbol such as “777”, a special game called “big hit” is started, and the opening / closing plate of the attacker 30e is opened a predetermined number of times. After the opening / closing plate of the attacker 30e is opened, the opening / closing plate is closed when a predetermined time elapses or when a predetermined number of game balls are won.

42 is a payout control unit that receives a signal from the main board 40 and controls the game ball payout device 43 according to the game balls passing through the winning holes 30b to 30e and / or according to the lottery / determination result.
43 is a game equipped with a drive source for paying out a predetermined number of game balls according to the passing of game balls of the winning openings 30b to 30e and / or the results of lottery / determination as a result of achieving the winning conditions. A ball dispensing device.
Reference numeral 44 denotes a lamp control unit for controlling lighting of the lamp / electric decoration 52a and the like provided on the gaming board 10 or the gaming machine casing.
An acoustic control unit 46 generates sound effects / sounds through a speaker 52b provided in the gaming board 10 or the gaming machine casing.
In FIG. 4, the display control unit 41 is provided on the sub-board 40b. The lamp control unit 44 and the acoustic control unit 46 may be provided on the sub board 40b in the same manner. Alternatively, the random number generated by the random number generation unit 40b-2 may be distributed to the lamp control unit 44 and the acoustic control unit 46.

  The winning devices 30b to 30e in which game balls are provided in the game area are provided with ball passage detectors (for example, switches) 20b to 20e, respectively, so that the passage of the game ball can be detected. When the position of any one of the winning devices 30b to 30e is passed, the ball passage detectors 20b to 20e detect this, and the main board 40 performs a predetermined lottery / determination process. For example, when the ball passage detector 20b detects a game ball that has passed through the through chucker (winning chucker) 30b, a predetermined lottery is performed, and when winning, the start chucker (starting winning device) 30d is released for a predetermined time. That is, a pair of movable pieces provided opposite to each other on both the left and right sides of the start chucker (start winning device) 30d are opened outward. At the same time, the effect of winning is displayed on the variable display device (center accessory) 30a. Then, when it is detected that the game ball has passed the start chucker (starting winning device) 30d, a predetermined lottery is performed, and when winning, the big winning device of the attacker 30e is released.

  FIG. 5 is an explanatory diagram of the hardware configuration of the main board 40. In FIG. 5, the display of the power-on detection unit 40-2 is omitted. The main board 40 of FIG. 4 is actually realized by the hardware configuration of FIG. That is, a CPU (processing device), a ROM (nonvolatile storage unit), a memory 40-1 (readable and writable memory, RWM), and an I / O (input / output device) are added to a BUS composed of a plurality of bits (wiring). Is connected. The normal process related to the game executed on the main board 40 of FIG. 4 is executed by the CPU operating in accordance with a program stored in advance in the ROM of FIG. The processing of the checksum calculation unit 40-3 and the command transmission unit 40-4 in FIG. 4 is the same. The CPU performs processing such as storing various data in the memory 40-1 when performing processing, reading out processing as necessary, performing processing, and storing again as necessary. The memory 40-1 is supplied with power from the backup power source BAT. Therefore, the stored contents are retained even while the power is off.

  The sub-board 40b has the same configuration as that shown in FIG. 5, but is different in that it does not include a backup power source. Therefore, when the power is turned off, the stored contents of the memory of the sub board 40b are lost.

  Since the main board 40 performs management given to the game, the main board 40 is provided with the backup power source BAT as described above. In order to confirm whether or not the data is correctly held during the backup by the power source BAT (when the backup power source BAT deteriorates and its output voltage decreases, the memory 40-1 cannot hold the data). Adds the data for the contents of a specific area or all areas of the memory 40-1 and uses the addition result as check data (hereinafter referred to as checksum), which is stored in the memory 40-1 in advance when the power is turned off. Compare with checksum.

  In the embodiment of the invention, immediately after the power is turned on, the checksum is transmitted as a command from the main board 40 to the sub board 40b. Here, the checksum is not used to determine whether or not the data in the memory has been normally held, but is used as data having a different value each time the power is turned on. By generating a random number using the received checksum as a seed for the random number on the sub-board, it is possible to use the random number from the power-on stage and to change the generated random number. Since the random number update after acquiring the seed of the random number is performed by a known technique (MT random number, M-sequence random number, etc.), the processing of the main board added compared to the conventional one is limited to the processing at power-on. Therefore, no special processing burden is placed on the main board.

  FIG. 6 shows a process flowchart according to the embodiment of the invention. This figure shows only the parts necessary for the description of the embodiment of the invention.

  S1 to S6 are processes of the main board 40. When the power is turned on, the CPU executes an initialization process (S1). At the same time as the power is turned on or in the initialization process, a checksum calculation process is executed. That is, the checksum calculation target area address of the memory is set (S2), and the checksum is calculated by adding all the contents (data) in the set area (S3). Which area is targeted is predetermined. Preferably, an address for storing data that varies for each gaming machine or for each game (for example, a random number for lottery processing) is included in the area. A command including the calculated checksum is generated, and the command is transmitted to the sub board 40b (S4). Then, the initialization process is continued, the initialization process is completed (S5), and the normal game process is executed.

  S1, S5 and S6 are the same as the conventional processing. Although S2 to S4 are processes according to the embodiment of the invention, since the calculation of the checksum is also performed by the conventional gaming machine, it may be shared with the processes of S2 and S3. The command transmitted in S4 includes, for example, a header, a command identification code, and contents (checksum value). The identification code means that the command includes a seed of random numbers.

  S11 to S16 are processing of the sub-board 40b. When the power is turned on, the CPU executes an initialization process (S11). If a command is received from the main board 40 during execution of the initialization process (YES in S12), the CPU is interrupted and the processes after S13 are executed. If the initialization process has been completed before receiving the command, the CPU enters a wait state and waits for reception of the command. When the command is received, the command is analyzed, a checksum included in the command is extracted, and a random number process setting process is executed based on the checksum (S13). Specifically, the checksum is set as a seed of random numbers to generate a random number. Then, the initialization process is continued (S14), and the setting for using the random number generated in S13 is performed before the normal game process (S16). That is, each effect state is set based on the generated random number (S15).

  FIG. 7 is a timing chart of processing according to the embodiment of the invention. This figure is simplified and shows only the parts necessary for the description of the embodiment of the invention. When the power is turned on at time t1, the main board 40 executes a predetermined initialization process, and transmits a checksum calculated therein as a command to the sub board 40b (time t12). In response to the command, the sub board 40b executes a random number generation process.

  In the embodiment of the invention, (1) the seed of random numbers used in the sub-board 40b is a checksum of the memory of the main board 40. Since the checksum is a value that changes for each gaming machine and each time the power is turned on, the random number generated based on the seed is random. In addition, (2) checksum calculation and random number generation processing are started immediately after the power is turned on, so that random numbers with improved randomness can be prepared before normal game processing.

  Therefore, according to the embodiment of the invention, it becomes possible to use a random number with improved randomness from the time of power-on on the sub-board, and the mode / background of the liquid crystal screen has randomness immediately after power-on. Will be able to.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

It is a perspective view which shows the surface structure of a game machine. It is a perspective view which shows the back surface structure of a game machine. It is a figure (front view) which shows the mode of the board surface seen from the player. It is a functional block diagram of the gaming machine according to the embodiment of the invention. It is explanatory drawing of the hardware constitutions of the control part of a game machine. It is a process flowchart of the game machine which concerns on embodiment of invention. It is an operation | movement timing chart of the game machine which concerns on embodiment of invention. It is an operation | movement timing chart of the conventional game machine.

Explanation of symbols

40 Main board 40-1 Memory (storage unit)
40-2 power-on detector 40-3 checksum calculator 40-4 command transmitter 40b sub-board 40b-1 command receiver 40b-2 random number generator BAT backup power supply

Claims (5)

In a gaming machine comprising a main board that performs processing of game control and generates processing information, and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing.
The main board includes a storage unit capable of reading and writing data relating to a game control process, a power-on detection unit that detects power-on, and a predetermined value of the storage unit based on an output of the power-on detection unit. A checksum calculation unit for obtaining a checksum of the area, and a command transmission unit that generates a command including the checksum and sends the command to the sub-board.
The sub-board includes a command receiving unit that receives the command, and a random number generating unit that generates a random number by using the checksum included in the received command as a seed of random numbers. .   The gaming machine according to claim 1, further comprising a backup power source that supplies power to the storage unit when the power is turned off. In a gaming machine comprising a main board that performs processing of game control and generates processing information, and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing, the sub board generates random numbers. A method that occurs,
Detecting power on at the main board;
Obtaining a checksum of a predetermined area of the storage unit of the main board when power on is detected in the main board;
Generating a command including the checksum and sending the command from the main board to the sub-board;
Receiving the command at the sub-board;
A random number generation method in a gaming machine comprising: generating a random number by using the checksum included in the command received by the sub-board as a seed of random numbers. In a gaming machine comprising a main board that performs processing of game control and generates processing information, and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing, the sub board generates random numbers. A program of how to occur,
In the CPU of the main board,
Detecting power on; and
Obtaining a checksum of a predetermined area of the storage unit of the main board when detecting power-on;
Generating a command including the checksum and sending the command from the main board to the sub-board. In a gaming machine comprising a main board that performs processing of game control and generates processing information, and a sub board that obtains the processing information generated by the main board and performs predetermined output mode processing, the sub board generates random numbers. A program of how to occur,
In the CPU of the sub-board,
Receiving a command from the main board;
When the received command includes a checksum that should be used as a random number seed, a checksum is extracted from the command and a random number is generated by using the checksum as a random number seed. Program to let you.

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