JP2012115565A - Reel control circuit for reel type game machine and game machine control chip having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute reel control by hardware.SOLUTION: Stepping motor control is implemented by register operation. The reel control circuit includes the number of excitation circuits equal to the number of control signals for controlling a stepping motor. Each of the excitation circuits includes: a register group connected to a data bus of a main chip; a clock frequency dividing circuit which generates a basic frequency based on a source vibration input and a value of a frequency setting register; a decoder circuit which determines an address of each register; an excitation pattern generation circuit which generates a pattern of excitation output based on an output of the clock frequency dividing circuit and outputs it to a drive circuit of the stepping motor; a phase counter circuit which performs down-count for each update of excitation based on a signal from a position sensor and the register set value; and a pattern counter circuit which performs down-count for each full circle of the phase counter. A CPU can read the count values of the phase counter circuit and the pattern counter circuit.

Description

  A control circuit configured by a hardware circuit as a peripheral circuit of a gaming machine control chip (main chip) including a CPU for controlling a control board of the spinning gaming machine and outputting a reel control signal for the spinning gaming machine; The present invention relates to an IC chip having the circuit in the chip.

  In the rotating type gaming machine, by inserting coins and operating the start lever, the winning combination is drawn and a stepping motor (hereinafter simply referred to as “motor”) starts rotating. When the stop button is pressed, the rotating motor is stopped with the symbol corresponding to the winning combination.

  Patent Document 1 discloses an invention in which a control motor is provided for a drive motor of a spinning cylinder type game machine to perform motor control. As one of the processing means of the gaming machine to be performed periodically, it has a rotating drum drive motor control processing means, and in this rotating drum drive motor control processing means, a signal for driving the rotating drum drive motor is generated, The generated drive signal is output to the rotary drive motor side at regular time intervals. Specifically, when there are a plurality of processes within a regular processing period, the total processing time until all the processes end varies, but even in such a case, for example, the processing within the timer interrupt process By making the output timing of the drive signal to the drum drive motor substantially constant, the output interval becomes constant. As a result, the influence on the drive motor due to fluctuations in the total processing time is avoided, and the rotation stability during rotation of the rotating drum is achieved.

  Patent Document 2 discloses an invention in which a symbol variation of a rotating symbol display device is executed by a sub CPU in a belt unit. When creating a new model in which the contents of the reach pattern are changed, a symbol variation method for a symbol combination gaming machine that only requires a change of the main CPU program on the gaming machine body side and a belt change of the rotating symbol display device is realized. A main CPU is provided on the pachinko machine side, and a sub CPU is provided on the belt unit side. The symbol variation data command string is downloaded from the main CPU to the RAM of the sub CPU via the interface. The received command written in the RAM is read by the command interpretation execution unit of the ROM, the motor control unit is driven, and only the corresponding belt is rotated to execute the symbol variation of the rotating symbol display device.

JP 2010-131416 A JP H09-29966 A

Conventionally, the motor control is executed by a program. While managing the time, a motor control signal for each step is output for each step. For example, there are 21 types of symbols and 504 steps for a motor. During the control by the motor, the program handles all of the 21 types of symbols, which step of the start / stop control, 504 steps, and which of the 21 types of symbols.
These controls are indispensable because of the characteristics of a spinning cylinder type game machine. In Patent Document 1, there is a variation in the output interval of the control signal of the motor depending on the state of the gaming machine (the state of the main CPU), and there is a problem of causing step-out and unstable rotation. Patent Document 2 proposes a method of changing symbols by a sub CPU.
In view of the fact that the capacity of a storage area to which a program is written is limited by related laws and regulations (laws, rules, instructions, administrative guidance, etc.), the inventor of the present invention does not rely on a program but uses a hardware circuit reel. By controlling, the capacity of the program that can be allocated to the original game-related program increased, and it was considered that the problems pointed out by the prior art could be solved together.
An object of the present invention is to provide a gaming machine control chip in which a reel control circuit of a spinning machine is configured by a hardware circuit.

  The present invention is characterized in that the stepping motor control of the spinning cylinder type game machine is realized by a register operation. What was previously realized by software processing is realized by processing by hardware.

  When the present invention is realized as a circuit provided outside the main chip, the revolving game machine is constituted by a hardware circuit as a peripheral circuit of the main chip for controlling the gaming machine including a CPU for controlling the control board of the revolving gaming machine. A reel control circuit for outputting a control signal for controlling a stepping motor for rotating the reel, and has excitation circuits as many as the number of control signals necessary for controlling the stepping motor. One is a frequency setting register that sets a basic frequency for exciting the stepping motor, a data register that is a register that inputs an excitation pattern for manual operation, and automatic / manual activation, excitation pattern, and excitation. The start register, which is a register that sets the frequency division of the basic frequency, and automatic / manual stop, and the number of stops at automatic stop An offset setting register which is a register for adjusting a deviation between a stop register which is a register to be set and a position sensor which detects one turn of the stepping motor, and a register which sets the number of frames of one symbol of the reel. A register group having a phase count register and a symbol count register which is a register for setting the number of symbols of one revolution of the reel, each register being connected to the data bus of the external bus of the main chip, and source input And a clock frequency dividing circuit which is a circuit for generating a basic frequency based on the value set in the frequency setting register, and the register based on a chip select signal from the main chip, a strobe signal, and a signal from the address bus A decoder circuit which is a circuit for determining an address of each register of the group, and the data register; An excitation pattern generation circuit, which is a circuit that generates an excitation output pattern based on a value set in the start register, the stop register, and an output of the clock divider circuit, and outputs the excitation output pattern to the drive circuit of the stepping motor; A phase counter circuit that is a counter circuit that counts down each time excitation is updated from a signal from a position sensor that detects one turn of the stepping motor, and a value set by the offset setting register and the phase count register; An excitation signal is updated by having a symbol counter circuit that is a counter circuit that counts down each time the phase counter makes a round from the output signal of the phase counter circuit and the value set in the symbol count register The count value of the phase counter circuit that counts down every time, and the countdown value every time the phase counter makes one round The CPU can read the count value of the symbol counter circuit to be transmitted through the external bus.

  When the present invention is provided as a circuit in the main chip, the revolving game machine is constituted by a hardware circuit as a peripheral circuit of the main chip for controlling the gaming machine including a CPU for controlling the control board of the spinning machine. A gaming machine control chip having a reel control circuit in the main chip for outputting a control signal for controlling a stepping motor for rotating a reel of the reel, wherein the reel control circuit is a control necessary for controlling the stepping motor. There are as many excitation circuits as the number of signals, and each of the excitation circuits inputs a frequency setting register that is a register for setting a basic frequency for exciting the stepping motor and an excitation pattern for manual operation. Data register, which is a register, and a register that sets automatic / manual activation, excitation pattern, and excitation basic frequency division This register is used to adjust the difference between the start register, which is a controller, the stop register which is used to set automatic / manual stop, and the number of stops during automatic stop, and the position sensor which detects one round of the stepping motor. There is an offset setting register, a phase count register that is a register for setting the number of symbols per symbol of the reel, and a symbol count register that is a register for setting the symbol number of one revolution of the reel, A register group connected to the data bus of the internal bus of the main chip, a clock frequency dividing circuit which is a circuit for generating a fundamental frequency based on a source input and a value set in the frequency setting register, and the CPU A decoder circuit which is a circuit for determining an address of each register of the register group based on a signal from the data register, and the data register An excitation pattern generation circuit that generates an excitation output pattern based on the values set in the start register and the stop register and the output of the clock frequency dividing circuit and outputs the excitation output pattern to the driving circuit of the stepping motor A phase counter circuit that is a counter circuit that counts down each time excitation is updated from a signal from a position sensor that detects one turn of the stepping motor and values set in the offset setting register and the phase count register; And a symbol counter circuit that is a counter circuit that counts down each time the phase counter makes a round from the output signal of the phase counter circuit and the value set in the symbol count register, and the excitation is updated. The count value of the phase counter circuit that counts down every time it is counted and every time the phase counter makes one round The CPU can read the count value of the symbol counter circuit to count through the internal bus.

According to the gaming machine control chip of the present invention, it is possible to set an excitation pattern and excitation switching time, and to automatically start and rotate.
During rotation, it is possible to automatically update the symbol index and phase counter necessary for controlling the spinning-type game machine, and to know where the motor is located.
In the stop control (stop button, at the time of operation), it is possible to set the number of steps after which the stop is calculated from the calculation of the position where the stop is performed.
Since it is not affected by the time required for CPU processing such as interrupt processing, the effect of preventing motor step-out can be expected.
By reducing the software processing, it becomes possible to more efficiently use the limited program capacity for the program for realizing the original game characteristics.
This will help game machine manufacturers pursue a variety of games.

FIG. 1 is a block diagram of a reel control circuit. FIG. 2 is a timing chart showing a reel excitation pattern. FIG. 2A shows a 1-2 phase excitation pattern. FIG. 2B shows a one-phase excitation pattern. FIG. 2 (3) shows a two-phase excitation pattern. FIG. 3 is a timing chart showing the operation of the phase counter and symbol counter during reel rotation. FIG. 4 is a timing chart showing the operation of the phase counter and symbol counter during reel rotation when the offset is set to 3. FIG. 5 is a timing chart showing the operation of the reel stop timer during the reel stop process. FIG. 6 is an internal block diagram showing a general hardware configuration of a gaming machine control chip (main chip). FIG. 7 is a block diagram illustrating the relationship between the reel control circuit, gaming machine control chip, reel, stepping motor, and drive circuit. FIG. 8 is a diagram depicting the relationship between the reel, the stepping motor, and the drive circuit when the reel control circuit is built in the gaming machine control chip.

  An embodiment of a gaming machine control chip according to the present invention will be described with reference to the drawings.

  FIG. 6 is an internal block diagram showing a general hardware configuration of the gaming machine control chip (main chip) 10. The CPU 20 has a CPU core compatible with Z80 instructions. The built-in ROM 21 is a ROM whose capacity is limited by related laws and regulations, and stores a user program (a program created by a gaming machine manufacturer). The built-in RAM 22 is a RAM used as a work area for user programs. Connected to the bus 25 of the CPU 20 are a built-in ROM 21, a built-in RAM 22, and some circuits provided in the gaming machine control chip 10 described below. The clock circuit 31 is a circuit that divides the clock input to the CLK terminal by 2 and supplies it to each circuit as an internal system clock, and outputs this clock from the CLKO terminal. The timer circuit 34 is a Z80-CTC compatible timer circuit manufactured by Zylog Corporation. The address decoding circuit 35 is a decoding circuit for an external device of the user program, and outputs a chip select signal (XCS). The reset / interrupt controller 32 is a circuit that controls various resets, external interrupt requests, and interrupt requests from the built-in timer circuit (CTC) 34. The out-of-designated area travel prohibition (IAT) circuit 33 is a circuit for monitoring whether the user program is correctly executed in the designated area. When the user program is executed outside the designated area, an IAT signal is generated. As a result, a user reset occurs. The external bus interface 30 is a bus interface circuit that reinforces the address bus, the data bus, and the direction control and drive capability of each control signal.

In FIG. 6, A0 to A15 are 16-bit address buses, which specify addresses for data transmission / reception with a memory or an I / O device. D0 to D7 are 8-bit data input / output buses for transmitting / receiving data to / from a memory or an I / O device. XM1 is an output terminal indicating machine cycle 1. XMREQ is a request signal output terminal to the memory space. XIORQ is a request signal output terminal to the I / O space. XRD is a read strobe output terminal. XWR is a write strobe output terminal. XCS is a chip select output terminal to an external device of the user program. XINT is a maskable interrupt request input terminal. XNMI is a non-maskable interrupt request input terminal. XURST is a user reset input terminal. When a low level is input to this terminal, a user reset occurs, the CPU 20, timer circuit 34, and reset / interrupt controller 32 are initialized, and the CPU re-executes the user program from the reset address. . XSRST is a system reset input terminal. When a low level is input to this terminal, a system reset is generated and all internal circuits are initialized. The XRSTO terminal is a reset output terminal for an external device that outputs a low level when a user reset or a system reset is activated. V _DD means a positive power supply terminal. V _BB means a backup power supply terminal of the built-in RAM. V _SS1 and V _SS2 mean ground potential terminals.

  FIG. 1 is a block diagram of a reel control circuit. Here, priority is given to easy-to-understand signal input / output, and the circuit is depicted as a circuit provided outside the gaming machine control chip (main chip) in FIG. Similar to several peripheral circuits (30 to 35) in the gaming machine control chip 10, it can also be provided in the main chip. The reel control circuit is a circuit that generates the pulse signal shown in FIG. 2 and sends it to a motor (drive circuit thereof).

  The reel control circuit 40 includes three circuits that are similar circuits, that is, a reel 1 control circuit 41, a reel 2 control circuit 42, and a reel 3 control circuit 43 excitation circuit 44. Here, the fixed poles of the unipolar type two-phase stepping motor are usually referred to as A phase, B phase, A bar phase, and B bar phase. I will call it.

  The five circuits constituting the reel control circuit 40 will be described. The clock divider circuit 51 is a circuit that generates a fundamental frequency from a source oscillation input. The decoder circuit 55 is a circuit that determines the address of each register. The excitation pattern generation circuit 56 is a circuit that generates an excitation output pattern based on values set in each register. The phase counter circuit 57 is a counter circuit that counts down from a preset value every time the excitation is updated. The symbol counter circuit 58 is a counter circuit that counts down from a preset value every time the phase counter makes one round.

  Next, the seven registers provided in the reel control circuit 40 will be described. The frequency setting register 61 is a register for setting a basic frequency for exciting the stepping motor. The data register 62 is a register for inputting an excitation pattern when operating manually. The activation register 63 is a register for setting automatic / manual activation, excitation pattern, and frequency division of the excitation basic frequency. The stop register 64 is a register for setting automatic / manual stop and the number of stops at the automatic stop. The offset setting register 65 is a register for adjusting a deviation from the position sensor. The phase count register 66 is a register for setting the number of frames of one symbol of the reel. It is possible to read the count value of the phase counter circuit that counts down every time the excitation is updated. The symbol count register 67 is a register for setting the number of symbols for one revolution of the reel. It is possible to read the count value of the symbol counter circuit that counts down every time the phase counter makes one round.

  There are three types of excitation patterns (excitation sequences): the 1-2 phase excitation pattern shown in FIG. 2A, the 1 phase excitation pattern shown in FIG. 2B, and the 2 phase excitation pattern shown in FIG. 2C. The setting is made by the activation register 63.

  The 1-2 phase excitation pattern shown in FIG. 2A excites only one phase (one phase) at time 1 and excites two phases, one phase and two phases, at time 2. At time 3, only two phases (one phase) are excited, and at time 4, two phases of two and three phases are illustrated. In other words, the sequence from time 1 to time 8 in which only one phase is excited in the odd time period and two phases are excited in the even time period is repeated. The 1-2 phase excitation has the characteristics that the movement is smooth, a suitable torque is obtained, and the movement is performed by 0.5 frames.

  The one-phase excitation pattern shown in FIG. 2B excites two phases (only one phase) at time 1, excites three phases (only one phase) at time 2, and four phases (one phase) at time 3. Energize only one phase) and energize one phase (only one phase) at time 4. It is a repetition of the excitation pattern. Torque cannot be obtained with one-phase excitation.

  The two-phase excitation pattern shown in FIG. 2C is one phase and two phases (two phases) at time 1, two phases and three phases (two phases) at time 2, and three phases and four phases at time 3. Thus, it always excites any two phases. There is a feature that torque can be taken.

  An excitation pattern generation circuit 56 generates output patterns for one phase, two phases, three phases, and four phases, which are given to the fixed poles of the stepping motor (via a necessary drive circuit). As a result, the stepping motor is started and rotated to rotate the reel of the spinning-type game machine.

  In FIG. 1, signals from the position sensor are input to the phase counter circuit 57 and the symbol counter circuit 58. The position sensor is a sensor for detecting one turn of the stepping motor. For example, the light-shielding plate is passed between the light-emitting element and the light-receiving element facing each other, and the light-shielding plate is moved around the stepping motor. Configured to pass between the two elements.

  The reset signal in FIG. 1 is a signal that similarly initializes the excitation pattern generation circuit 56 when the XRSTO in FIG. 6 is used and a user reset or a system reset is activated. As the source oscillation input, which is an input signal to the clock frequency dividing circuit 51 in FIG. 1, the output of the clock circuit in FIG. 6 is used. D0-D7, A0-A4, XRD, XWR, and XCS in FIG. 1 are the same as those in FIG.

  “Basic motor excitation frequency” required by the program to rotate the reels, “Excitation pattern for manual operation”, “Distinguish between automatic and manual startup / Excitation pattern at startup / Excitation basic frequency Frequency division ”and“ distinguish between automatic and manual stop / number of stops at automatic stop ”are written in the frequency setting register 61, the data register 62, the start register 63, and the stop register 64, respectively. According to the operation of the game machine program, the value of the register in the reel control circuit is rewritten as necessary according to the exchange between the CPU 20 and the reel control circuit 40 using the strobe signal, address bus, and data bus. The clock frequency dividing circuit 51 reads the value written in the frequency setting register 61, generates a fundamental frequency based on the source input signal, and inputs the signal to the excitation pattern generation circuit 56. The excitation pattern generation circuit 56 obtains timing for exciting the motor based on the values of the data register 62, start register 63, and stop register 64, generates an excitation output pattern, and performs stepping with the excitation pattern shown in FIG. Since the signal is sent to the motor side, the stepping motor starts to rotate. In addition, by “manually starting” or “changing the frequency division of the excitation basic frequency”, it is possible to rotate slowly when the rotation is started and fast when a certain amount of rotation is performed. Similarly, special reel control for production can be performed. Since there are usually three reels, three stepping motors are provided correspondingly and three reel control circuits are also provided.

  FIG. 3 is a timing chart showing the operations of the phase counter 57 and the symbol counter 58 during reel rotation. During the reel rotation, the phase counter 57 and the symbol counter 58 operate. The reel phase clock in the timing chart of FIG. 3 is supplied to the phase counter circuit 57 through the excitation pattern generation circuit 56. A signal from the position sensor is given as an output from the light receiving sensor described above. After the position sensor detection negation, the counter value is preset at the rising edge of the next reel phase clock. As a result, the value of the number of steps set (here, m) is loaded, and the down-counting operation is performed by the reel phase clock. The count value is written in the phase count register 66. Then, the data can be read out by the CPU 20.

  The symbol counter circuit 58 presets a preset symbol number (21 in this case) at the rising edge of the next reel phase clock after detection negation of the position sensor. Every time the reel phase counter makes one round, a down-count operation is performed. The count value is written in the symbol count register 67. Then, the data can be read out by the CPU 20. By performing presetting with the position sensor, correction is automatically performed when the number of steps of the stepping motor is not divisible by the number of symbols. For example, when a 400-step stepping motor is used, 20 symbols must be set in 19 steps and 1 symbol in 20 steps. If correction is not performed, a deviation occurs every round.

  FIG. 4 is a timing chart showing the operation of the phase counter and symbol counter during reel rotation when the offset is set to 3. The offset is a value for adjusting the deviation between the position sensor and the symbol. The offset setting register 65 holds this value. By setting the offset, the counter value can be preset at a position shifted by the set value. In FIG. 4, this value is set to 3.

  FIG. 5 is a timing chart showing the operation of the reel stop timer during the reel stop process. The CPU 20 detects the stop button, calculates the stop position of the reel on the CPU 20 side, and issues a stop command together with the number of steps (maximum 128). Based on this, the strobe signal, the address bus, and the data bus work. The value of the stop register 64 is rewritten. The excitation pattern generation circuit 56 reads it, and after the set number of steps (t) has elapsed since the next symbol counter update, maintains all-phase excitation for 256 phases and then turns off all phases. This stops the reel. Further, special reel control for production can be performed by “manually stopping” or “changing the frequency division of the excitation basic frequency”.

  FIG. 7 is a block diagram illustrating the relationship between the reel control circuit 40, the gaming machine control chip 10, the position sensor 85, the reel 90, the stepping motor 80, and the drive circuit 70. The reel 90 usually has 21 types of symbols drawn on its outer periphery, and three identical reels are provided side by side. Three stepping motors 80 are provided according to the number of reels. One drive circuit 70 is provided for each stepping motor. The output signal of the reel control circuit 40 is a pulse signal as shown in FIG. 2, and the drive circuit (driver) that receives the signal and drives the stepping motor is the drive circuit 70. In the above description, since the stepping motor is assumed to be a two-phase uni-boler type, four signal lines from the reel control circuit 40 to the drive circuit 70 are drawn. If other types of stepping motors are used, more control signals may be required. In that case, the number of excitation circuits (41 to 43) in the reel control circuit 40 is increased. Of the signal lines from the gaming machine control chip 10 to the reel control circuit 40, XRD is a signal line for a read strobe signal, and XWR is a signal line for a write strobe signal. A0 to A15 are address buses of the external bus, and D0 to D7 are data buses of the external bus. XCS is a chip select output terminal in the gaming machine control chip (main chip). CLKO is an output signal of the clock circuit in the gaming machine control chip (main chip) and corresponds to “source input” in FIG. The position sensor 85 in FIG. 7 is a photosensor provided to detect one rotation of the stepping motor 80. For example, the position sensor 85 detects that the light shielding plate passes between the light emitting element and the light receiving element by a signal from the light receiving element. It is composed by doing. The signal of the position sensor 85 becomes the input signal of the phase counter circuit 57 in FIG.

  FIG. 8 is a diagram depicting the relationship between the reel 90, the position sensor 85, the stepping motor 80, and the drive circuit 70 when the reel control circuit 40 is built in the gaming machine control chip 10. As shown in FIG. There are many parts in common with FIG. The difference is that the reel control circuit 40 is provided as a circuit in the gaming machine control chip 10. Thereby, the exchange between the CPU 20 and the reel control circuit 40 is performed via the internal bus 25. A signal from the position sensor 85 to the phase counter circuit 57 is sent via the external bus interface 30.

  The present invention can be generally applied to the control of a spinning cylinder type gaming machine.

10 Chip for gaming machine control

20 CPU
21 Internal ROM
22 Built-in RAM
25 Bus 30 External bus interface 31 Clock circuit 32 Reset / interrupt controller 33 Out-of-area travel prohibition (IAT) circuit 34 Timer circuit 35 Address decode circuit 40 Reel control circuit 41 Reel 1 control circuit 42 Reel 2 control circuit 43 Reel 3 control circuit 51 Clock Dividing Circuit 55 Decoder Circuit 56 Excitation Pattern Generation Circuit 57 Phase Counter Circuit 58 Symbol Counter Circuit 61 Frequency Setting Register 62 Data Register 63 Start Register 64 Stop Register 65 Offset Setting Register 66 Phase Count Register 67 Symbol Count Register 70 Drive Circuit 80 Stepping motor 85 Position sensor 90 Reel

Claims (2)

A control signal for controlling a stepping motor that is configured by a hardware circuit as a peripheral circuit of a main chip for gaming machine control including a CPU that controls a control board of the spinning gaming machine and that rotates a reel of the spinning gaming machine is output. A reel control circuit,
There are as many excitation circuits as the number of control signals necessary to control the stepping motor,
Each of the excitation circuits is
A frequency setting register which is a register for setting a basic frequency for exciting the stepping motor;
A data register that is a register for inputting an excitation pattern for manual operation;
Start register which is a register to set the automatic / manual start, excitation pattern, excitation basic frequency division,
Stop register, which is a register for setting the number of stops during automatic / manual stop and automatic stop,
An offset setting register that is a register for adjusting a deviation from a position sensor that detects one turn of the stepping motor;
A phase count register which is a register for setting the number of frames of one symbol of the reel;
A register group having a symbol count register that is a register for setting the number of symbols of one revolution of the reel, each register being connected to a data bus of an external bus of the main chip;
A clock divider circuit that is a circuit that generates a fundamental frequency based on a source input and a value set in the frequency setting register;
A decoder circuit which is a circuit for determining an address of each register of the register group based on a chip select signal from the main chip, a strobe signal, and a signal from an address bus;
Excitation that is a circuit that generates an excitation output pattern based on the values set in the data register, the start register, and the stop register and the output of the clock frequency dividing circuit and outputs it to the drive circuit of the stepping motor A pattern generation circuit;
A phase counter circuit that is a counter circuit that counts down each time excitation is updated from a signal from a position sensor that detects one turn of the stepping motor, and a value set in the offset setting register and the phase count register;
A symbol counter circuit that is a counter circuit that counts down each time the phase counter makes one round from the output signal of the phase counter circuit and the value set in the symbol count register;
Have
The CPU can read the count value of the phase counter circuit that counts down every time the excitation is updated, and the count value of the symbol counter circuit that counts down every time the phase counter makes one round through the external bus. A reel control circuit characterized by. A control signal for controlling a stepping motor that is configured by a hardware circuit as a peripheral circuit of a main chip for gaming machine control including a CPU that controls a control board of the spinning gaming machine and that rotates a reel of the spinning gaming machine is output. A gaming machine control chip having a reel control circuit in the main chip,
The reel control circuit includes:
There are as many excitation circuits as the number of control signals necessary to control the stepping motor,
Each of the excitation circuits is
A frequency setting register which is a register for setting a basic frequency for exciting the stepping motor;
A data register that is a register for inputting an excitation pattern for manual operation;
Start register which is a register to set the automatic / manual start, excitation pattern, excitation basic frequency division,
Stop register, which is a register for setting the number of stops during automatic / manual stop and automatic stop,
An offset setting register that is a register for adjusting a deviation from a position sensor that detects one turn of the stepping motor;
A phase count register which is a register for setting the number of frames of one symbol of the reel;
A register group having a symbol count register which is a register for setting the number of symbols for one revolution of the reel, each register being connected to a data bus of an internal bus of the main chip;
A clock divider circuit that is a circuit that generates a fundamental frequency based on a source input and a value set in the frequency setting register;
A decoder circuit which is a circuit for determining an address of each register of the register group based on a signal from the CPU;
Excitation that is a circuit that generates an excitation output pattern based on the values set in the data register, the start register, and the stop register and the output of the clock frequency dividing circuit and outputs it to the drive circuit of the stepping motor A pattern generation circuit;
A phase counter circuit that is a counter circuit that counts down each time excitation is updated from a signal from a position sensor that detects one turn of the stepping motor, and a value set in the offset setting register and the phase count register;
A symbol counter circuit that is a counter circuit that counts down each time the phase counter makes one round from the output signal of the phase counter circuit and the value set in the symbol count register;
Have
The CPU can read out the count value of the phase counter circuit that counts down every time the excitation is updated and the count value of the symbol counter circuit that counts down every time the phase counter makes one round through the internal bus. A reel control circuit characterized by.

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