JPH1170253A - Pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pachinko game machine which can prevent illegal acts using a hanging board, etc. SOLUTION: In the case of first execution (S1: Yes) since the turning on of power, a RAM is initialized (S2), and the process of renewing an add value counter is repeatedly executed (S5) for the duration of residual time before the occurrence of the next rest interrupt process. In the case of second or subsequent execution (S1: No) since the turning on of power, a random number counter renewal process (S3) and each process (S4) are executed in that order, and thereafter the add value counter renewal process is repeatedly executed (S5) for the duration of residual time before the occurrence of the next reset interrupt process. Thus, since the random number counter renewal process for determining a jackpot and the add value counter renewal process for determining the amount of renewal of the random number counter are executed asynchronously, an illegal act using a 'hanging board' which comprises calculating the timing of the occurrence of the next jackpot according to the occurrence of one jackpot so as to illegally cause a jackpot can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball game machine typified by a pachinko game machine and the like, and more particularly to a ball game machine capable of preventing fraudulent activities using a "hanging board" or the like. is there.

[0002]

2. Description of the Related Art A pachinko gaming machine of this type is provided with a display device capable of displaying a plurality of types of symbols in a variable manner, and starts displaying the variation when a ball hit into a game area passes through a symbol operation gate. It is configured to be. When the variable display is stopped in accordance with a predetermined combination of symbols, a big hit occurs, a predetermined game value is given to the player, and a large number of game balls can be paid out.

[0003] The occurrence of such a big hit is determined at the timing when the hit ball passes through the symbol operation gate. That is, in a certain range periodically (eg, 1
A counter that is updated every 2 ms in the range of 0 to 200 every 2 ms. When the hit ball passes through the symbol actuation gate, the value of the counter is read, and the read value of the counter is, for example, When a predetermined value such as "7" matches, a big hit is generated. When a big hit occurs, a big hit command is transmitted to the display board of the display device via the cable connected to the connector of the control board. The display device controls the variable display based on the received jackpot command, and causes the jackpot display to stop at a predetermined combination of symbols to appear.

[0004]

[Problems to be solved by the invention] However, recently,
There have been reports of fraudulent activities using fraudulent substrates called "hanging substrates". This fraudulent act involves hanging an improper board (attaching an improper "hanging board") between the control board and the display board of the display device, thereby causing an unreasonable jackpot. Specifically, when a jackpot occurs, a jackpot command transmitted from the control board to the display board is detected, and in accordance with the next jackpot occurrence timing, a symbol actuation gate passing signal of a hit ball is incorrectly generated, This is output to the control board to cause an unreasonable jackpot. As described above, the counter for determining the jackpot is regularly updated by one count within a certain range, so that the jackpot occurrence timing comes at a certain cycle. Therefore,
If the jackpot occurrence is detected once, the next jackpot occurrence timing can be calculated based on the detection result. In a game arcade or the like, there has been a problem that an illegal act using such a “hanging board” has caused a great deal of damage.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and makes it impossible to calculate the timing of occurrence of the next jackpot based on the occurrence of one jackpot, thereby making it possible to use a "hanging board" or the like to perform an illegal act. It is an object of the present invention to provide a ball-and-ball game machine capable of preventing the problem.

[0006]

In order to achieve the above object, according to a first aspect of the present invention, there is provided a bullet game machine, wherein a random number counter, first updating means for updating a value of the random number counter, Reading means for reading the value of the random number counter, wherein when the value of the random number counter read by the reading means matches one of predetermined values, the player is provided with a predetermined game value under predetermined conditions. Change means for changing the update amount of the random number counter by the first update means at a second opportunity; and updating the change amount by the change means with the random number counter by the first update means. And a second updating means for updating asynchronously with the updating of.

According to the first aspect of the present invention,
The value of the random number counter updated by the predetermined amount by the first updating means is read by the reading means at the first opportunity. When the read value of the random number counter matches one of the predetermined values, a jackpot is won, and a predetermined game value is given to the player under predetermined conditions. The updating amount of the random number counter by the first updating means is changed by the changing means at the second opportunity, but the updating amount is updated by the second updating means asynchronously with the updating of the random number counter by the first updating means. You. Therefore, since the update amount of the random number counter is changed at random, it is impossible to calculate the timing of occurrence of the next big hit based on the occurrence of one big hit.

[0008]

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In this embodiment, a description will be given using a pachinko gaming machine as an example of a ball and ball gaming machine, particularly, a first-type pachinko gaming machine. Note that it is naturally possible to use the present invention for a third-type pachinko gaming machine and other ball-and-ball gaming machines.

FIG. 1 is a front view of a gaming board of a pachinko gaming machine P according to a first embodiment. Around the game board 1, there are provided a plurality of winning ports 2 from which 5 to 15 game balls are paid out when a hit ball wins. In the center of the game board 1, a liquid crystal (LCD) display 3 for displaying a plurality of kinds of symbols as identification information is provided. The display screen of the LCD display 3 is divided into three in the horizontal direction, and in each of the three divided display areas,
Each symbol is displayed in a variable manner.

Below the LCD display 3, there is provided a symbol actuation gate (first type starting port) 4, and when the hit ball passes through the symbol actuation gate 4, the above-mentioned LCD is activated.
The variable display on the display 3 is started. Below the symbol operation gate 4, a specific winning opening (large winning opening) 5 is provided. When the display result after the change of the LCD display 3 matches one of a predetermined combination of symbols, the specific winning opening 5 becomes a big hit and a predetermined time (for example, 30) so that the hit ball can easily win. The winning opening is opened until the second elapses or until 10 hit balls are won. The specific winning opening 5 includes a V zone 5a
When the specific winning opening 5 is opened, the hit ball
When the player passes through the zone 5a, the continuation right is established, and after the specific winning opening 5 is closed, the specific winning opening 5 is again set for a predetermined time (or until a predetermined number of hit balls wins in the specific winning opening 5).
Be released. The opening and closing operation of this specific winning opening 5 is 1 at the maximum.
The state in which the opening / closing operation can be performed six times (16 rounds) and can be performed is a state in which a predetermined game value is given (special game state).

FIG. 2 is a block diagram showing an electrical configuration of the pachinko gaming machine P. The control unit C of the pachinko gaming machine P includes a CPU 11 which is an arithmetic device and its CPU 1
1 includes a ROM 12 storing various control programs 12a and an addition value table 12b executed by the CPU 1, a RAM 13 serving as a memory for storing various data and the like, and an EEPROM 14 serving as a nonvolatile rewritable memory. I have. The programs in the flowcharts shown in FIGS. 4 to 6 are stored in the ROM 12 as a part of the control program 12a.
Is stored within.

FIG. 3 is a schematic diagram of an addition value table 12b stored in the ROM 12. Addition value table 12b
Is a table for storing the update amount (addition value) of the random number counter 13a, in which seven types of addition values are stored as 7-byte data. As the addition value, a prime number other than a divisor of “1” and “the upper limit value of the update range of the random number counter 13a + 1” is adopted (note that a prime number other than a divisor is not necessarily required. ). Since the update range of the random number counter 13a in the first embodiment is "0 to 200",
The upper limit +1 is “201”. Prime numbers other than the divisor of “201” are 2, 5, 7, 11, 13, 17, 19,
23,..., "1" and the seven smaller values of prime numbers other than these divisors are stored as additional values in the additional value table 12b.

As shown in FIG. 2, the RAM 13 includes a random number counter 13a, an addition value memory 13b, and an addition value counter 13c. The random number counter 13a is a counter for determining occurrence of a jackpot. Specifically, when the value of the random number counter 13a is, for example, "7", a big hit occurs when a hit ball passes through the symbol operation gate 4. When a big hit occurs, a big hit command is sent from the control unit C to a display device D described later. The display device D controls the variable display of the LCD display 3 to a jackpot state based on the jackpot command. The value of the random number counter 13a is updated once every 2 ms by a random number counter update process (S3) executed in the reset interrupt process of FIG. Further, the update range is a range of “0 to 200”.

The addition value memory 13b includes a random number counter 13
is a memory for storing an update amount (addition value) of the random number counter a.
The update is performed when the value of the random number counter 13a becomes “0” by 3). The addition value stored in the addition value memory 13b is determined by the value of the addition value counter 13c and the data of the addition value table 12b. That is,
The value-th addition value table 12b of the addition value counter 13c
Is stored in the added value memory 13b as the added value (update amount) of the random number counter 13a.

The addition value counter 13c stores the addition value memory 1
3b is a counter for determining the added value stored in the reset value counter 3b.
According to 5), the count is updated by one in the range of “0 to 6”. This addition value counter update processing (S5) is executed by a reset interrupt processing executed every 2 ms, similarly to the random number counter update processing (S3) for updating the value of the random number counter 13a. However, while the random number counter updating process (S3) is executed once in one reset interrupt process, the added value counter updating process (S5)
It is executed not only once in one reset interrupt process but also during the remaining time of the reset interrupt process. The remaining time of the reset interrupt process is not a fixed time, but a time that changes according to the game situation. This is because the execution time of each process (S4) of the reset interrupt process changes according to the game situation. Therefore, the update of the addition value counter 13c is performed asynchronously (irrelevantly) with the update of the random number counter 13a.

These CPU 11, ROM 12, RAM
The EEPROM 13 and the EEPROM 14 are connected to each other via a bus line 17. The bus line 17 is also connected to the input / output port 15.
Is connected to the display device D and other input / output devices 16.
The control unit C sends operation commands to the display device D and other input / output devices 16 via the input / output port 15 to control those devices. The variable display on the LCD display 3 and the opening / closing operation of the specific winning opening 5 are also controlled based on the operation command.

The display device D includes a CPU 21, a program ROM 22, a work RAM 23, and a video RAM 24.
, Character ROM 25, image controller 26
, An input / output port 27 and the LCD display 3. The CPU 21 of the display device D responds to the operation command output from the control unit C to the LCD display 3.
The program ROM 22 stores a program executed by the CPU 21. The work RAM 23 is a CPU
21 is a memory that stores work data used when the program is executed by the program 21.

The video RAM 24 is a memory in which data to be displayed on the LCD display 3 is stored.
The display content of the D display 3 is changed. That is, the change display of the symbol in each display area is performed by rewriting the contents of the video RAM 24. The character ROM 25 is a memory for storing character data such as symbols displayed on the LCD display 3. The image controller 26 includes a CPU 21, a video RAM 24,
By adjusting the timing of each input / output port 27,
In addition to reading and writing data, the video RAM 2
The display data stored in the LCD 4 is displayed on the LCD display 3 at a predetermined timing with reference to the character ROM 25.

Next, each processing executed in the pachinko gaming machine P configured as described above will be described with reference to flowcharts of FIGS. FIG. 4 shows the pachinko gaming machine P
12 is a flowchart of a reset interrupt process executed every 2 ms in the control unit C of FIG. In the reset interrupt processing, first, it is checked whether or not the processing is the processing executed first after the power is turned on (S1). If the processing is the processing executed first (S1: Yes), Initialization is performed (S2), and thereafter, the addition value counter updating process is repeatedly executed for the remaining time until the next reset interrupt process occurs (S5). On the other hand, if the reset interrupt processing is executed for the second time or later after the power is turned on (S1: No), the random number counter update processing (S3) and each processing (S4) are executed in that order, and then the next reset interrupt is executed. The update process of the added value counter is repeatedly executed during the remaining time until the occurrence of the
5). As described above, the addition value counter updating processing is repeatedly executed during the remaining time until the next reset interrupt processing occurs, so that the longer the remaining time, the more the processing is executed.
On the other hand, since the random number counter updating process is executed only once in one reset interrupt process, the added value counter updating process can be executed asynchronously with the random number counter updating process.

The presence or absence of a big hit is determined by a big hit determination process (not shown) executed when the hit ball passes through the symbol operation gate 4. In the big hit determination process, the value of the random number counter 13a is read, and if the value is "7", a big hit is generated. When a big hit occurs, a big hit command is transmitted from the control unit C to the display device D. In the first embodiment, since the random number counter 13a is updated in the range of "0 to 200", the jackpot occurrence probability is 1/201.

FIG. 5 is a flowchart of the addition value counter updating process. As described above, this process is repeatedly executed during the remaining time of the reset interrupt process. Since the addition value counter 13c is updated in the range of “0 to 6”, in this process, it is first checked whether the value of the addition value counter 13c is “6” or more (S11). If the value of the addition value counter 13c is less than “6” (S11: No),
One is added to the value of the addition value counter 13c (S12),
If it is equal to or more than "6" (S11: Yes), the value of the added value counter 13c is cleared to "0" (S13), and this processing ends. Thus, the value of the addition value counter 13c is
Each time the addition value counter update process is executed once, “0
In the range of “6”, “+1” is updated.

FIG. 6 is a flowchart of the random number counter updating process. The random number counter update process is executed once each time the reset interrupt process is executed once. In this process, first, it is checked whether the value of the random number counter 13a is "0" (S21). If the value of the random number counter 13a is "0" (S21: Yes), the addition value counter 1
The value of the addition value table 12b corresponding to the value of 3c is written to the addition value memory 13b, and the addition value memory 13b is updated (S22). Specifically, if the value of the addition value counter 13c is “0”, “1” is stored in the addition value memory 13b, and if the value of the addition value counter 13c is “2”, “5” is stored in the addition value memory 13b. If the value of the addition value counter 13c is "5", "13" is written to the addition value memory 13b.

When the value of the random number counter 13a is not "0" (S21: No), and after the addition value memory 13b is updated (S22), the value of the addition value memory 13b is added to the value of the random number counter 13a. Then, the value of the random number counter 13a is updated (S23). The random number counter 13a indicates “0 to 20”.
0 ”, the updated random number counter 1
It is checked whether or not the value of 3a exceeds the update range (S2).
4) If it exceeds the update range (if it is equal to or more than "201") (S24: Yes), "201" of "upper limit of update range + 1" is subtracted from the value of random number counter 13a (S24).
25), this process ends. On the other hand, if it does not exceed the update range (if it is "200" or less) (S24: N
o), this process ends as it is.

By the random number counter updating process (S3), the value of the random number counter 13a is updated as shown in FIGS. For example, if the value of the added value memory 13b written in the process of S22 is "5", the value of the random number counter 13a is the value of the "random number counter update status" column of FIG. Street, 0, 5, 10, ... 19
0,195,200,4,9, ... 1,6,11, ... 18
The update amount (addition value) is “5” in the order of 6,191 and 196.
Is updated for all of “0 to 200”. “1, 2, 7, 11, 13, 17” other than the addition value of “5”
The same applies to the case of. Accordingly, the value of the random number counter 13a is set to “0 to 20” by the random number counter updating process of FIG.
In the range of "0", the addition value (update amount) stored in the addition value memory 13b is updated.

As described above, in the pachinko gaming machine P of the first embodiment, the update amount (addition value) of the random number counter 13a for determining the occurrence of the jackpot is not a fixed value but an update amount prepared in advance ( (Additional value) is randomly assigned and changed. Therefore, the occurrence interval between one big hit and the next big hit is irregular, so that even if one big hit occurs, it is not possible to calculate the occurrence timing of the next big hit based on the big hit. Therefore, based on one big hit, the next big hit occurrence timing is calculated, and at that timing, the passing signal of the symbol actuation gate 4 is incorrectly generated to generate an unreasonable big hit.
It is possible to prevent fraudulent activities using a so-called hanging substrate.

The update amount (addition value) of the random number counter 13a is a prime number other than a divisor of "1" and "the upper limit value of the update range of the random number counter 13a + 1". Further, the addition value is updated when the value of the random number counter 13a becomes "0" (S21: Yes, S22), and as shown in FIGS. 7 and 8, Each value of “0 to 200” can be updated uniformly. Therefore, the jackpot occurrence probability can be accurately maintained. In the first embodiment, the value of the random number counter 13a is updated in the range of 201 from "0 to 200" and the value of the jackpot is only one of "7". Yes, this probability is maintained.

Next, the second and third embodiments will be described with reference to FIGS. In the second and third embodiments, the update range of the random number counter 13a from "0 to 200" is changed to "1 to 200" and "5 to 200". As shown in the second and third embodiments, by changing the random number counter update processing, the random number counter 13a can be updated for the entire update range regardless of the update range.

First, a second embodiment will be described with reference to FIGS. In the second embodiment, the first range is set in order to set the update range of the random number counter 13a to “1 to 200”.
The random number counter updating process (S3) of the embodiment is changed. Hereinafter, the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 9 is a flowchart of the random number counter updating process according to the second embodiment. This random number counter updating process is also executed once each time the reset interrupt process is executed once. In this processing, first, the value of the addition value memory 13b is added to the value of the random number counter 13a,
The value of a is updated (S31). Since the random number counter 13a is updated in the range of “1 to 200”, if the updated value of the random number counter 13a is “200” or less (S3
2: No), the current random number counter update process is terminated.

On the other hand, if the value of the random number counter 13a after the update is equal to or more than "201" which exceeds the update range (S3
2: Yes), “201” of “upper limit of update range + 1” is subtracted from the value of random number counter 13a (S33). If the result of the subtraction is that the value of the random number counter 13a is not "0" (S34: No), the current random number counter update processing is terminated.

The value of the random number counter 13a after the subtraction is "0"
If it is (S34: Yes), it means that the update of the random number counter 13a has been completed for the entire range of "1 to 200", and the value of the addition value table 12b corresponding to the value of the addition value counter 13c is stored in the addition value memory 13b. Write to
The addition value memory 13b is updated (S35). Then, the updated value of the added value memory 13b is stored in the random number counter 13
The random number counter 13a is written to the random number counter 13a as an initial value for updating a (S36), and the current random number counter update processing ends.

FIG. 10 is a diagram showing an update state of the random number counter 13a updated by the random number counter update processing. As shown in FIG. 10, the value of the random number counter 13a is changed to “1 to 20” by the random number counter updating process of FIG.
In the entire range of "0", the addition value (update amount) stored in the addition value memory 13b is uniformly updated.

Next, referring to FIG. 11 and FIG.
An example will be described. In the third embodiment, in order to set the update range of the random number counter 13a to "5 to 200", a change is made to the random number counter update process (S3) of the first embodiment. Hereinafter, the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 11 is a flowchart of a random number counter updating process according to the third embodiment. This random number counter updating process is also executed once each time the reset interrupt process is executed once. In this processing, first, the value of the addition value memory 13b is added to the value of the random number counter 13a,
The value of 3a is updated (S41). Since the random number counter 13a is updated in the range of "5 to 200", if the updated value of the random number counter 13a is "200" or less (S4
2: No), the current random number counter update process is terminated.

On the other hand, if the value of the random number counter 13a after the update is equal to or more than "201" which exceeds the update range (S4).
2: Yes), “201” of “upper limit of update range + 1” is subtracted from the value of the random number counter 13a (S43). If the result of the subtraction is that the value of the random number counter 13a is equal to or greater than "5" (S44: No), the current random number counter update processing is terminated.

As a result of the subtraction in the process of S43, the value of the random number counter 13a is less than "5" (S44: Ye
s) and if not "0" (S45: No), S49
Then, the value of the addition value memory 13b is added to the value of the random number counter 13a (S49). As a result of the addition, until the value of the random number counter 13a becomes “5” or more (S4
8: No), the process of S49 is repeated. If the value of the random number counter 13a is equal to or more than "5" (S48: Ye
s) The current random number counter update processing ends.

As a result of the subtraction in the process of S43, the value of the random number counter 13a is less than "5" (S44: Ye
s) If "0" (S45: Yes), it means that the update of the random number counter 13a has already been completed for the entire range of "5 to 200". Therefore, the value of the addition value table 12b corresponding to the value of the addition value counter 13c is written into the addition value memory 13b, the value of the addition value memory 13b is updated (S46), and the updated addition value memory 1 is updated.
The value of 3b is written to the random number counter 13a (S47).
If the written value of the random number counter 13a is less than "5" (S48: No), the value of the addition value memory 13b is added to the value of the random number counter 13a until the value of the random number counter 13a becomes "5" or more. (S48, S49). S
If the result of the addition in the process of 49 or the value of the random number counter 13a becomes “5” or more in the process of S47 (S48: Yes), the current random number counter update process ends.

FIG. 12 is a diagram showing an update state of the random number counter 13a updated by the random number counter update processing. As shown in FIG. 12, the value of the random number counter 13a is changed to “5-2” by the random number counter updating process of FIG.
In the entire range of “00”, the addition value (update amount) stored in the addition value memory 13b is uniformly updated.

The first updating means according to claim 1 corresponds to the random number counter updating processing of FIGS. 6, 9 and 11, and the second updating means corresponds to the addition value counter of FIG. Update processing corresponds to this. In addition, the first opportunity corresponds to the occurrence of a hit ball symbol actuation gate passing signal, and the second opportunity corresponds to the opportunity when the value of the random number counter 13a goes around the entire update range and becomes “0”. Applicable. Further, the reading means corresponds to a process (not shown) for reading the value of the random number counter 13a which is executed when the hit ball passes through the symbol actuation gate 4, and the changing means corresponds to S2.
2, S35 and S46 correspond.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the gist of the present invention. Can easily be inferred.

For example, in each of the above-described embodiments, in the reset interrupt processing of FIG. 4, the random number counter update processing (S3) is executed once, and the addition value counter update processing (S5) is not limited to one time. During the remaining time until the reset interrupt processing occurred, the processing was repeatedly executed, and the execution times of both processings were made asynchronous. However, the execution positions of both processes in the reset interrupt process may be switched, and the number of executions of both processes may be asynchronous.

In each of the above embodiments, the random number counter 1
The change of the update amount of 3a, that is, the update of the value of the added value memory 13b, was performed when the value of the random number counter 13a went around the entire update range (S21: Yes, S22, S3).
4: Yes, S35, S45: Yes, S46). However, the value of the addition value memory 13b may be updated when a big hit occurs (when a hit ball symbol activation gate passing signal is generated) or in response to another trigger. If the value of the addition value memory 13b is updated when a big hit occurs, it becomes impossible to calculate the next big hit occurrence timing from the big hit.

Further, as the values of the addition value table (see FIG. 3) used as the addition value of the random number counter 13a,
Among the prime numbers other than the divisors of “1” and “upper limit of update range + 1”, “1, 2, 5, 7, 11, 13, 17” are used. However, a value that is not limited to a prime number, excluding “1”, that is, a number other than a divisor of “the upper limit value of the update range + 1” may be used as a value of the addition value table. . Further, the updating of the random number counter 13a was performed by a count-up method by adding an addition value. However, the update of the random number counter 13a may be performed by a countdown method of subtracting an addition value (or a subtraction value) from the value of the random number counter 13a.

Hereinafter, a modified example of the present invention will be described. 2. The ball game machine according to claim 1, further comprising storage means for storing an update amount of said random number counter by said first update means, wherein said change means changes the update amount stored in said storage means by a second opportunity. A ball and ball game machine 1 characterized by being changed.

[0045] In the ball game machine 1 or the ball game machine according to claim 1, the second opportunity is that the value of the random number counter read by the reading means matches one of predetermined values. Time, that is, when a state of giving a predetermined game value to a player under predetermined conditions occurs (when a big hit occurs)
A ball game machine 2 characterized by the following. By changing the update amount of the random number counter every time a big hit occurs, the time from the occurrence of one big hit to the occurrence of the next big hit can be made an unfixed random time. Therefore,
Since it is not possible to calculate the timing of the occurrence of the next big hit based on the occurrence of the big hit, it is possible to prevent fraud by a hanging board or the like.

[0046] In the ball game machine 1 or the ball game machine according to claim 1, the second opportunity is when the value of the random number counter is updated n times by the first updating means. Ball game machine 3. Note that n is a natural number. As a result, even if the update amount of the random number counter is changed,
The jackpot occurrence probability can be maintained at a predetermined probability. The update of the value of the random number counter n times can be detected by counting the number of times that the value of the random number counter has reached a predetermined value (for example, “0”).

[0047] In the ball game machine according to any one of claims 1 to 3, or the ball game machine according to claim 1, the first updating means includes an adding means for adding an update amount stored in the storage means to a value of the random number counter. When the value of the random number counter is equal to or more than “the upper limit of the update range + 1” as a result of the addition by the adding means, subtraction of subtracting the value of “the upper limit of the update range + 1” from the value of the random number counter. Means, and the update amount of the random number counter is selected from a number (not a prime number) other than a divisor of “upper limit of update range + 1” and “1”. Ball game machine 4. In this case, "1" may be excluded from the update amount of the selected random number counter.

[0048] The ball game machine according to any one of claims 1 to 4 or claim 1, further comprising an interruption process periodically executed for a predetermined time, wherein one of said first update means and said second update means is provided with an interrupt processing. The first processing is executed according to the number of executions of the interrupt processing.
The ball game machine 5 characterized in that the other of the updating means and the second updating means is executed according to the remaining time of the interrupt processing. Thus, the first updating means and the second updating means can be executed asynchronously.

[0049]

According to the ball game machine of the present invention, the update of the random number counter for determining the jackpot is performed asynchronously with the update of the update amount of the random number counter. Therefore, it becomes impossible to calculate the timing of the occurrence of the next big hit. Therefore, the next big jackpot occurrence timing is calculated from one big jackpot occurrence,
This has the effect of preventing fraudulent acts using a “hanging board” or the like that generates an unreasonable jackpot.

[Brief description of the drawings]

FIG. 1 is a front view of a game board of a pachinko gaming machine according to one embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the pachinko gaming machine.

FIG. 3 is a diagram showing an addition value table.

FIG. 4 is a flowchart showing a reset interrupt process.

FIG. 5 is a flowchart illustrating an addition value counter update process.

FIG. 6 is a flowchart illustrating a random number counter update process according to the first embodiment.

FIG. 7 is a diagram illustrating an update state of a random number counter according to the first embodiment.

FIG. 8 is a diagram illustrating an update state of a random number counter according to the first embodiment.

FIG. 9 is a flowchart illustrating a random number counter update process according to the second embodiment.

FIG. 10 is a diagram illustrating an update state of a random number counter according to the second embodiment.

FIG. 11 is a flowchart illustrating a random number counter update process according to the third embodiment.

FIG. 12 is a diagram illustrating an update state of a random number counter according to the third embodiment.

[Explanation of symbols]

 3 Liquid crystal (LCD) display 4 Symbol operation gate 5 Special winning opening 13 RAM of control unit 13a Random number counter 13b Addition value memory 13c Addition value counter C Control unit D Display P Pachinko game machine (ball game machine)

Claims (1)

[Claims] 1. A random number counter, first updating means for updating the value of the random number counter, and reading means for reading the value of the random number counter at a first opportunity, wherein the random number read by the reading means is provided. When the value of the counter matches one of the predetermined values, in a ball game machine that gives a predetermined game value to a player under predetermined conditions, the update amount of the random number counter by the first update unit is A second updating means for changing the update amount changed by the changing means asynchronously with the updating of the random number counter by the first updating means. Ball game machine to do.