JP2002186755A - Game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the breakage of a stack value even in the receipt of a forced interruption signal such as service interruption processing or the like during the stacking of stack values in a stacking area. SOLUTION: A control part 1700 stacks stack values D, E, F generated by forced interruption processing in the following stack position (the position corresponding to a stack pointer 4) of the stack position 3 shown by a stack pointer when prescribed stack values A, B, C generated by initialization are staked in a stacking area 1740. Accordingly, the breakage of the stack values A, B and C can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a main control unit for controlling the overall operation of a gaming machine, which repeatedly executes a series of game control programs at a predetermined cycle, and executes a game control program at each cycle. The present invention relates to an improvement in a gaming machine configured to stack a predetermined stack value in a stack area.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. As shown in FIG. 15 (a), the operation of the gaming machine is performed by a main CPU that controls the entire operation of the gaming machine by executing a game control program in a predetermined cycle (for example, 4
(Msec)). The repetition of the execution of the game program in the predetermined cycle is performed every time the main CPU receives a hardware-based interrupt signal (reset signal).

[0003] At that time, in each cycle, an initialization process is executed particularly at the head portion. Immediately after the power is turned on, initialization 1 such as RAM clearing and initial data setting processing is executed, and immediately after hardware reset, initialization 2 such as random number updating processing is executed. In any initialization, a predetermined stack value is stacked in the stack area of the main CPU.

However, FIG.
As shown in (b), this initialization 1 (or 2)
In the case where the stack value is stacked in the stack area and a forced interrupt signal such as a power failure process is received, the stack pointer is set to an initial value 0, and a new value is set in the forced interrupt process such as the power failure process. Is overwritten on the predetermined stack value and the predetermined stack value is destroyed.

[0006] FIG. 16 shows this state. In the normal case, as shown in FIG.
At 00, a predetermined stack value “A, B, C” is stacked and the stack pointer becomes “3”. However, when a forced interrupt signal is received, the stack pointer becomes an initial value “0” and this forced interrupt processing is performed. The newly generated interrupt processing stack values “D, E, F” are replaced with predetermined stack values “A, B,
There is a problem that the predetermined stack value is destroyed by overwriting the "C" (see FIG. 16B).

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a gaming machine which prevents this type of stack destruction.

[0006]

In order to achieve the above object, the present invention provides a main control unit for controlling the entire operation of a game machine which repeatedly executes a series of game control programs at a predetermined cycle. In a gaming machine in which a predetermined stack value is stacked in a stack area in execution of a game control program in each cycle, a forced interrupt for returning a stack pointer to an initial value while stacking the predetermined stack value in the stack area. When a signal is received, stack control means is provided for stacking the predetermined stack value in a stack area and stacking an interrupt processing stack value generated by execution of processing for the forced interrupt signal so as not to destroy the predetermined stack value. It is characterized by having.

In the present invention, when a forced interrupt signal for returning the stack pointer to the initial value is received, a predetermined stack value is stacked in a stack area, and an interrupt processing stack value is stacked so as not to destroy the predetermined stack value. Therefore, the predetermined stack value is not destroyed.

Further, the stack control means may be means for stacking the interrupt processing stack value at a stack position next to a stack position indicated by a stack pointer when the predetermined stack value is stacked in the stack area. .

Further, the stack control means is means for stacking the stack value in the stack area and then stacking the interrupt processing stack value in another stack area physically separated from the stack area. You can also.

[0010] Such control can be realized by recording a control procedure on a computer-readable recording medium, and reading and executing the control procedure recorded on the recording medium by a computer. Such recording media include semiconductor recording media such as ROMs and semiconductor ICs,
Examples include optical recording media such as DVDROM and CDROM, magnetic recording media such as flexible disks, and magneto-optical recording media such as MO.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. First, the configuration and operation of a gaming machine that performs display control by transmitting and receiving control commands will be described, and then the main operations of the present invention will be described to facilitate understanding of the present invention.

FIG. 1 is a schematic explanatory view of the game board 10. As shown in FIG. The game board 10 has three (left, middle, and right) display areas in a substantially central portion thereof. In each of the display areas, identification information composed of symbols or figures by characters is variably displayed. A possible special symbol display device 100 is provided, and a special symbol start port 104 is provided directly below the special symbol display device 100. On both sides of the special symbol start port 104, normal symbol operation gates 102, 102 are provided. Has been established. Also,
A pair of opening / closing members 120, 120 are the special symbol opening 104
Are formed so as to be openable and closable so as to form

Further, below the special symbol opening 104, a special winning opening 106, an ordinary symbol display device 108, and an out opening 114 are arranged in this order. Has a lamp display device 110,
110 is provided, and a lamp display device (more specifically, an LED device) is also provided near both side ends of the game board 10.
112, 112 are provided.

Then, a game ball is won in the special symbol starting port 104 and random number lottery is performed. When the random number selected is a big hit value, a variable display of at least one piece of identification information is started in each display area. After that, a special pattern (for example, “7, 7, 7”) is displayed on the winning line by the special symbol display device 100, and the special winning opening 106 is controlled to be opened and closed according to the predetermined pattern, so that a big hit game advantageous to the player State.

When the normal symbol operation gate 102 detects the passing of the game ball, a random number lottery is performed. When the random number selected is a small hit value, the normal symbol display device 108
Is displayed in a predetermined pattern (for example, “7” or “3”), and thereafter, when the opening / closing member 120 is opened and the game ball wins the special symbol starting port 104, the random number is similarly displayed. When a lottery is performed and the selected random number has a big hit value, a variable display in each display area is started, and then a predetermined display pattern (for example, “7, 7, 7”) is displayed on the winning effective line with a special symbol. This is performed by the display device 100, and the opening and closing of the special winning opening 106 is controlled in a predetermined pattern, so that a big hit state advantageous to the player is achieved. on the other hand,
The hit ball that is not won is discharged through the out port 114.

FIG. 2 is a control block diagram showing only a main part of the gaming machine in which such gaming machine control is performed according to the progress of the game. The main control unit 200 is equipped with a microprocessor having a built-in CPU. The command data table stores various control commands including at least various commands for controlling the special symbol display device 100, which will be described later. A ROM 201 for storing a game control program such as a control program and control data describing an area 202 and a series of gaming machine control procedures, and a RAM 203 for forming a work area are provided. I have. The game operation is performed by the main control unit 200 repeatedly executing the game control program at a predetermined cycle.

The main control unit 200 has a special symbol start switch 304 provided inside the special symbol start port 104 through the input port 210 for detecting winning of the game ball into the special symbol start port 104, a normal symbol operation gate. A normal symbol operation switch 306 provided inside the 102 and detecting a game ball passing through a gate, and a large winning opening switch 308 provided inside the large winning opening 106 and detecting a winning of the gaming ball in the large winning opening 106. The main control unit 200 is connected and can receive each detection signal.

The main control unit 200 includes an output port 2
15, a special symbol display device 100 having three display portions for displaying special symbols and characters, each of which can be variably displayed independently and realized by an LCD or the like, and a lamp display device 110 for controlling lighting of a lamp. , 112, a sound effect generating device 116 for generating a sound effect, for example, a normal symbol display device 108 realized by a 7-segment display device, a starting port operating solenoid 300 for controlling opening / closing of a starting port opening / closing member 120, and a large A special winning opening operation solenoid 302 for controlling opening and closing of a wide opening and closing member of the winning opening 106 is connected, and the main control unit 200 can transmit a control signal for controlling each device. Then, the main control unit 200
In particular, it is possible to transmit a predetermined number of display control commands at a predetermined timing to the special symbol display device 100, and the special symbol display device 100 CP in oneself without relying on
U performs fine display control. Furthermore, a communication mode by one-way communication in which only a command is transmitted from the main control unit 200 to the special symbol display device 100 is adopted.

A special symbol display device 100 for performing a symbol display effect in accordance with the winning of the game ball into the special symbol starting port 104, an effect sound generating device 116 for performing a sound output effect by generating an effect sound together with the symbol display effect, The lamp display device 110 (112) that performs lighting on / off control of a lighting unit (not shown) together with the symbol display effect to perform the lighting on / off effect constitutes a peripheral device group for the effect.

A power supply circuit 212 for supplying power and a reset circuit 213 for outputting a reset signal every predetermined time are connected to the main control unit 200. A pulse signal generated by the periodic timer counter is input from the control unit 200, and a monitor signal for monitoring the current supply state from the power supply circuit 212 is input.

Now, as shown in FIG.
A command for display control sent from 0 to the special symbol display device 100 is an identifier for identifying the classification of the command and is 1-byte long digital information (MODE).
6 to 9 show an event (EVENT) which is one-byte digital information indicating the content (function) of the command to be executed. FIGS. 6 to 9 show the command data table area 202 stored in the ROM 201. It shows a part of command data for display control. Note that FIG. 6 does not show the contents of specifying the variation pattern in each command.

As shown in FIGS. 6 to 9, the display control commands include "a command for changing a special symbol and specifying a change pattern (first command)" and "a command for changing the special symbol. "Command for specifying stop symbol (second command)", "Command for specifying stop symbol in special symbol (second command)", "Command for specifying stop symbol on right of special symbol (second command)" And "command for stopping special symbol (third command)". Note that the first command is a command including information for designating a variation pattern such as a pattern in which a symbol is to be variably displayed and a pattern in which a character is to be displayed. Main control unit 2
00 transmits these five commands to the special symbol display device 100 at a predetermined timing in one variation display control when the game situation is such that the symbol variation display is started.

FIG. 3 is a block diagram of the special symbol display device 100. As shown in FIG. The special symbol display device 100 supplies power to a data receiving circuit 1140 (including a voltage converting circuit for converting a data level) for receiving a strobe signal and a command from the main control unit 200, and to the voltage converting circuit and the like. A power supply circuit 1160 and a CPU 1 that generates control data necessary for performing display control based on a received command and outputs the control data to an image processing LSI (VDP) 1060
020 (display control means) and a program ROM 10 containing a program in which an operation procedure of the CPU 1020 is described.
40, a RAM 1090 functioning as a work area and a buffer memory, and an image processing LS for performing image development processing.
I (VDP) 1060 and image processing LSI (VDP)
A video RAM 1080 for temporarily storing the image data developed by the image processing unit 1060, and an image processing LSI (VDP) 10
A character ROM 1180 storing data necessary for image development by 60 and an LCD for receiving and transmitting image data temporarily stored in the video RAM 1080
Panel interface circuit 1100 and this LCD
LCD panel 1 that outputs a display image using image data sent from panel interface circuit 1100
120.

As shown in FIG. 4A, the character RO
M1180 is a ROM title area, a ROM management information area, a character image data area storing actual character data, a pallet data area storing character color data, and a scenario data area storing information defining character movement. The character data is stored in the character image data area in a state where it is compressed by a specific compression method. Further, as shown in FIG.
A plurality of pairs of color numbers and color codes are stored.

The CPU of the special symbol display device 100
1020, the control data generated in response to the command received by the data receiving circuit 1140 is transferred to the image processing LSI (V
DP) 1060, the image processing LSI (VD
P) 1060 decompresses the character data obtained from the character image data area, colors it with the color data obtained from the palette data area, and specifies the video RAM 108 specified by the information obtained from the scenario data area.
The temporarily stored data is temporarily stored at a position on the LCD panel 0, and the temporarily stored data is sent to the LCD panel interface circuit 1100.
By means of 20, various image displays including a change in the variable display speed are performed in detail.

FIG. 5 is a timing chart showing the command transmission / reception timing. As previously mentioned,
The command consists of a 1-byte mode (MODE) and a 1-byte event (EVENT).
In this example, the main control unit 200 transmits mode (MODE) information at the first rising edge of the strobe signal (DUSTB) generated by itself at the time of a command change, and then transmits the two strobe signals (DUSTB). Event (EVENT) information is transmitted with the rise of the eyes. Then, in response to this, the CPU 1020 of the special symbol display device generates an interrupt when the strobe signal (DUSTB) is transmitted, receives a command by this interrupt processing, and stores the command in the RAM 1090.

Next, first, a normal control operation performed by the main control unit 200 and the CPU 1020 of the special symbol display device 100 will be described with reference to FIG. 10 (a general flowchart of game control) and FIG.
Then, with reference to FIG. 17 and the like, the characteristic display control of the present invention will be described to facilitate understanding of the present invention. Note that the series of processing shown in FIG. 10 is executed by the main control unit 200, and is executed from the first step by using a reset signal supplied from the reset circuit 213 every predetermined time (for example, 4 msec) as a trigger. Is repeatedly executed.

First, when the power supply circuit 212 is activated by a power switch (not shown), the main control unit 200 is activated. It is determined whether or not the first processing has been performed since the power-on. Step S11
0). In the case of the first processing after turning on the power (Yes)
The process proceeds to step S200, but otherwise (No), the process proceeds to step S120.

In step S200, a clearing process of a storage area is executed as an initialization process of the RAM 203. Then, in step S210, data for performing an initial control process is set in a predetermined area of the RAM 203. On the other hand, in step S120, the count values of various random number generation loop counters (not shown) for large hit determination, small hit determination, and the like formed in the RAM 203 are incremented. Update the timer value of the timer. Therefore, at the time of initial power-on, initialization such as RAM clearing and initial data setting processing is performed, and a predetermined stack value is stacked in the stack area of the main control unit 200. Is performed, and a second predetermined stack value corresponding to this is stacked in the stack area of the main control unit 200.

Next, in step S140, a special symbol start switch 304, a normal symbol operation switch 306,
An input port process of reading and storing the detection signal output from the special winning opening switch 308 into a register (not shown) via the input port 203 is executed, and then the process proceeds to step S150 to read and store the data read by the port input process. Switch check processing for grasping the condition.

Next, at step S160, each switch 3
A check is made to see if there is a disconnection or short-circuit in the lines 04, 306, 308, etc., and if any of these failures has occurred (Ye
s) The process proceeds to step S220, but otherwise (No), the process proceeds to step S180 (step S180).
170).

In step S180, data necessary for display control of the ordinary symbol display device 107 is stored in the RAM.
203 and a command necessary for display control of the special symbol display device 100 (see FIGS. 6 to 9).
(Including the commands described in the above) are stored in a predetermined area of the RAM 203, and the timer values of the various timers are reduced (step S190). In step S180, the main control unit 200 determines a command of a necessary mode and event according to the game control with reference to the command data table area 202, and stores digital information indicating the determined mode and event in the RAM 203 in a predetermined manner. Store in area.

Next, in step S195, the starting port operating solenoid 300 and the special winning port operating solenoid 302 are driven in order to control the opening and closing of the special winning opening 106 and the opening / closing member 120 of the special symbol starting opening 104 in a predetermined pattern. Then, in step S220, a prize ball setting process for outputting control information for causing a prize ball payout device (not shown) to perform a payout operation is executed. Further, in steps S230, 240, and 250, a game (not shown) External information processing for outputting various game data to the machine management device, a display lamp control process for storing a command for lighting control of the lamp display devices 110 and 112 in accordance with a game state in a predetermined area of the RAM 203, sound effect generation Device 11
6 executes a sound effect process for storing a command for controlling the sound effect generation in a predetermined area of the RAM 203 in correspondence with the game state.

Next, in step S260, R
The data stored in the AM 203 is output to the corresponding device via the output port 215 (port output process), and the device that receives the data performs a control operation based on the data. Then, a strobe signal is first output to the special symbol display device 100, and the mode and event data stored in the RAM 203 in step S180 are transmitted as shown in FIG. Thus, the commands shown in FIGS. 6 to 9 are transmitted from the main control unit 200 to the special symbol display device 100 and received.

In step S270, the reset circuit 21
The reset standby process is executed until the reset signal is input from Step 3, and when the reset signal is input, the process shifts to Step S110 to continue the gaming machine control. Note that the reset standby process includes updating of the various random number generation counters described above.

Next, the operation of the CPU 1020 of the special symbol display device 100 having received the command will be described with reference to FIG. First, in step S1100, the CPU 1020 sets its own stack pointer,
Initialization of the RAM 1090, initialization of the RAM 1090 itself, and the like are performed, and in step S1102, it is determined whether a new command has been input. When it is determined that a new command for display control has been input, (Y
es) The process proceeds to step S1104, while otherwise (No), the process proceeds to step S1110.

In step S1104, in the interrupt processing described with reference to FIG.
Copies the received command to the RAM 1090, and checks whether the command is normal or not. Next, CPU1
020 determines the start address of a processing table (not shown) in order to obtain a necessary command for performing fine display control independently of the main control unit 200. Then, in step S1108, the image processing LSI 1060 The data in the necessary area of the RAM 1090 is updated to output the data to the RAM 1090.

Next, in step S1110, RA
Based on the symbol control data set in M1090, scroll data to be output to the image processing LSI 1060 is obtained and set in the RAM 1090, and the symbol display position is set. Then, in step S1112, the symbol speed control is performed. Necessary data is stored in the program ROM
It is obtained from a speed table (not shown) built in the 1040, set in the RAM 1090, and then proceeds to step S
At 1114, the symbol offset value is updated based on the speed data, and preparations are made for performing symbol fluctuation at the set speed.

Next, in step S1116, RA
Animation data is acquired from an animation processing table (not shown) storing the animation processing data set in M1090, and preparation for displaying a background image is performed.
Set in P output buffer, output enable flag is "1"
It is determined whether or not (step S1118).

If the output permission flag is not "1" (No), the process returns to step S1102 to repeat a series of processes, while the output permission flag is "1" (Ye).
In step S1120, the data set in the VDP output buffer is transferred to the image processing LSI 106 in step S1120.
Output to 0. The image processing LSI 1060 acquires the data in the character ROM 1180 and develops the image in response to the data. The developed image data is temporarily stored in the video RAM 1080 and then sent to the LCD panel interface circuit 1100 to be sent to the LCD panel 1120. Is displayed. In this way, at the set display position on the special symbol display device 100, the symbol variation display at the set speed is performed using the reel data shown in FIG. 15, the background image is displayed, and the like.

FIGS. 13 and 14 are explanatory diagrams of an example of the transmission timing of a command transmitted from the main control unit 200 to the special symbol display device 100, that is, a transmission command. When a predetermined condition such as a game ball winning in the special symbol starting port 104 is satisfied, the unit 200 first transmits a command for starting a symbol variation and specifying a variation pattern (). A command for designating a left stop symbol is transmitted after a lapse of T1 time (), and a command for designating a middle stop symbol is transmitted after a lapse of T2 time (), and a right stop symbol is designated after a lapse of T3 time. (), And after the elapse of T time from the start of the fluctuation, a command () for stopping all the symbols is transmitted. Before receiving the command, the CPU 1020 of the special symbol display device 100 performs fine display control such as a change in the fluctuation speed to perform a series of fluctuation display control, and ends the fluctuation display control after a lapse of T time from the start of the fluctuation. I do.

(Main Parts of the Present Invention) (Structure) FIG. 15 is a block diagram showing the internal structure of the main control unit 200 according to the embodiment of the present invention. Main control unit 200
The instruction fetch unit 1710 and the instruction decode unit 172
0, a control unit 1700, an execution unit 1730,
And a stack area 1740. Further, an NMI terminal 1750 is connected to the power supply circuit 212, and when the power supply from the power supply circuit 212 is interrupted, a forced interrupt for setting the stack pointer to an initial value 0 is sent to the control unit 1700. .

When instruction fetch unit 1710 fetches an instruction described in the game control program in ROM 210 and passes it to instruction decoder unit 1720, instruction decoder unit 1
720 transfers the decoded information obtained by decoding this to the control unit 1700. When the control unit 170 passes the decode information to the execution unit 1730, the execution unit 173
0 executes a corresponding process using an ALU or a register group (not shown). Thus, the game control program is executed. In addition, each time the interrupt signal (reset signal) from the reset circuit 213 is supplied, the processing of the game control program is repeatedly executed.

At this time, as described above, when the power is initially turned on, initialization such as RAM clearing and initial data setting processing is performed, and a predetermined stack value is stacked in the stack area 1740. Initialization such as random number update is performed, and the corresponding second predetermined stack value is similarly stored in the stack area 1
Stacked at 740. Note that the stacked stack value is appropriately used in the processing of the main control unit 200 by a first-in, first-out method (FILO), and at that time, a stack pointer is changed according to the amount of information stacked. .

(Operation Example 1) As shown in FIG. 15B, while the stack value being initialized is being stored in the stack area 1740, the power supply from the power supply circuit 212 is interrupted and a forced interrupt signal is received. In this case, the controller unit 1700 performs a stack operation in the normal initialization. FIG. 18A shows a storage state of the stack values “A, B, C” in this state. At this time, since the three pieces of information are stacked, the control unit 1700 sets the stack pointer to “3”.

Next, regardless of the reception of the forced interrupt signal, the stack pointer is not returned to the initial value 0, and the forced interrupt processing (in this case, the game information RAM 230
The new stack value “D, E, F” generated in this process is stacked from the position of the stack pointer “4” indicating the position next to the stack pointer “3”. As a result, the stack pointer is set to “6” as shown in FIG. Thereafter, the control unit 17
In the case of 00, the stack value is read out in a first-in, first-out manner, and normal initialization is performed after executing the interrupt processing.

Therefore, according to the first operation example, when the predetermined stack value “A, B, C” generated by the initialization is stacked in the stack area 1740, the control unit 1700 sets the stack position “3” indicated by the stack pointer. "," D, E, F "(interrupt processing stack value) is stacked at the next stack position (position corresponding to stack pointer" 4 "), so that the stack value" A,
B, C "can be prevented.

(Operation Example 2) In this case, in the configuration of FIG. 17, the stack area 1740 is used as shown in FIG.
This is characterized in that the main control unit 200 having another stack area 1741 physically separated is used.

As shown in FIG. 15B, when the power supply from the power supply circuit 212 is interrupted and the forced interrupt signal is received while the stack value being initialized is being stored in the stack area 1740, the controller unit 170
0 performs a stack operation in the normal initialization. FIG. 19A shows the storage state of the stack values “A, B, C” in this state. At this time, since three pieces of information are stacked, the control unit 1
700 sets the stack pointer to “3”.

Next, regardless of the reception of the forced interrupt signal, the stack pointer is not returned to the initial value 0, and the forced interrupt processing (in this case, the game information RAM 230
And the new stack value “D, E, F” generated in this process is stacked in the stack area 1741 physically separated from the stack area 1740. As a result, the stack values “D, E, F” are changed as shown in FIG.
As shown in (b), the control unit 1700 sets the stack pointer of the stack area 1741 to “3”. After that, the control unit 1700 reads out the stack value of the stack area 1741 by the first-in last-out method and executes the interrupt processing, and then reads out the stack value of the stack area 1740 by the first-in last-out method to perform normal initialization.

Therefore, according to the second operation example, the control unit 1700 stacks the stack values “A, B, C” generated at initialization in the stack area 1740, and then “D, E, F” (interrupt processing). The stack value) is stacked in another stack area 1741 which is physically separated from the stack area 1740, so that the stack values “A, B, C” can be prevented from being destroyed.

As described above, according to the embodiment of the present invention, the main control unit 200 sets the stack pointer to the initial value 0 while stacking the predetermined stack value generated by initialization in the stack area 1740. When the forced interrupt signal to be returned is received, the predetermined stack value is stacked in the stack area 1740, and the interrupt processing stack value generated by executing the processing for the forced interrupt signal is stacked so as not to destroy the predetermined stack value. This predetermined stack value will not be destroyed.

Although the embodiments of the present invention have been described above, various modifications and changes can be made to the above embodiments without departing from the spirit of the present invention. For example, a cache mechanism or the like is provided in the main
7 is modified so that different stack areas are used for initialization at power-on and initialization other than at power-on, and FIG.
The stack value “D, E, F” may be stacked not from the next position indicated by the stack pointer in the state shown in FIG. Needless to say, the number of stack values generated in the forced interrupt processing and the initialization is not limited to three.

In the above description, a pachinko machine has been described as an example of a gaming machine. However, it is needless to say that the present invention is applicable not only to pachislot machines but also to other gaming machines.

[0055]

As described above, according to the present invention,
When a forced interrupt signal for returning the stack pointer to the initial value is received, the predetermined stack value is stacked in the stack area, and the interrupt processing stack value is stacked in the stack area so as not to destroy the predetermined stack value. The effect of not being destroyed is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a game board 10;

FIG. 2 is a control block diagram of the gaming machine.

3 is a block diagram of the special symbol display device 100. FIG.

FIG. 4 is an explanatory diagram of a character ROM memory map and pallet data.

FIG. 5 is a timing chart showing the timing of command transmission and reception.

FIG. 6 is an explanatory diagram of a command stored in a command data table area 202.

FIG. 7 is an explanatory diagram of commands stored in a command data table area 202.

FIG. 8 is an explanatory diagram of commands stored in a command data table area 202.

FIG. 9 is an explanatory diagram of commands stored in a command data table area 202.

FIG. 10 is a general flowchart for explaining a game control operation of the gaming machine.

11 is a flowchart illustrating a control operation of CPU 1020 of special symbol display device 100. FIG.

FIG. 12 is an explanatory diagram of a data structure of a command.

FIG. 13 is a timing chart showing a command transmission timing for symbol display.

FIG. 14 is an explanatory diagram for explaining command transmission.

FIG. 15 is an explanatory diagram of a conventional technique.

FIG. 16 is an explanatory diagram of a conventional technique.

FIG. 17 is an explanatory diagram of an internal configuration of a main control unit 200 according to an embodiment of the present invention.

FIG. 18 is an explanatory diagram of an operation example 1;

FIG. 19 is an explanatory diagram of an operation example 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Game board 100 Special symbol display device 102 Normal symbol operation gate 104 Special symbol start-up port 106 Big winning opening 108 Normal symbol display device 110 Lamp display device 112 Lamp display device 114 Out port 116 Sound effect generator 120 Opening / closing member 200 Main control unit 201 ROM 202 Command data table area 203 RAM 210 Input port 213 Reset circuit 212 Power supply circuit 215 Output port 300 Starting port operating solenoid 302 Large winning port operating solenoid 304 Special symbol starting switch 306 Normal symbol operating switch 308 Large winning port switch 1020 CPU 1040 Program ROM 1060 Image processing LSI 1080 Video RAM 1090 RAM 1100 LCD panel interface circuit 1120 LCD panel 11 0 data receiving circuit 1160 supply circuit 1180 character ROM

Claims (3)

[Claims] 1. A main control means for controlling overall operation of a gaming machine repeatedly executes a series of game control programs at a predetermined cycle, and a predetermined stack value is stored in a stack area during execution of the game control program at each cycle. When a forced interrupt signal for returning a stack pointer to an initial value is received while stacking the predetermined stack value in the stack area, the predetermined stack value is stacked in the stack area. A gaming machine further comprising stack control means for stacking an interrupt processing stack value generated by execution of processing for the forced interrupt signal so as not to destroy the predetermined stack value. 2. The gaming machine according to claim 1, wherein the stack control means performs the interrupt processing at a stack position next to a stack position indicated by a stack pointer when the predetermined stack value is stacked in the stack area. A gaming machine characterized by means for stacking a stack value. 3. The gaming machine according to claim 1, wherein the stack control unit, after stacking the stack value in the stack area, physically separates the interrupt processing stack value from the stack area. A gaming machine, which is means for stacking in another stack area.