JP2597338B2 - Data creation method for two-dimensional display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a method for creating bitmap data as display data in a two-dimensional dot matrix type display device.

[Prior art]

Display in a conventional two-dimensional dot matrix type display device is performed based on data stored in a memory, that is, a bit map. Hereinafter, a display device such as a fluctuation device in a pachinko machine will be described. In the two-dimensional dot matrix type display device, from the concept of coordinates and the concept of scanning by imitating the rotation of a drum of a slot machine, the horizontal direction is a positive direction from left to right, and the vertical direction is a downward direction. The direction is positive from top to bottom. However, when a bit map composed of “0” and “1” is displayed in a binary data sequence corresponding to the visible display stored in the memory, the left side of the binary data sequence has the upper bits, and the right Are lower bits, the upper part is the upper address, and the lower part is the lower address. Therefore, the way of taking the coordinates of the bit map and the dot matrix stored in the memory in the forward direction is completely opposite.

[Problems to be solved by the invention]

For this reason, there has been a problem that bitmap data in a visible state on a display device cannot be directly input to a memory. For this reason, as a normal processing method, a program for performing data conversion so that a bit map corresponds to a two-dimensional dot matrix type display bit is required. On the other hand, in a fluctuating device of a pachinko machine, a numerical value or a symbol of about three digits is fluctuated and displayed. However, this variable display is also controlled by a microcomputer for game control, and this microcomputer is only for game control, and a considerable load is applied, so that automatic conversion of a bitmap cannot be performed. Therefore, there is a problem in a method of creating a bitmap to be formed on a memory. However, it is difficult to create a bitmap because it cannot cope with a visible display. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to facilitate creation of a bitmap formed on a memory.

[Means for Solving the Problems]

The configuration of the invention for solving the above-mentioned problem is such that, from the left to the right in the horizontal direction on the display screen of the two-dimensional dot matrix, the lower bits of the memory storing the bitmap correspond to the upper bits, In a method for creating a bitmap stored in the memory in a two-dimensional display device that displays from the lower address of the memory to the upper address in the vertical direction from the lower dot to the upper dot, The bit map of the display pattern corresponding to the display state of (1) is formed, the bit map is rotated by 180 degrees, and the rotated bit map is stored in order from the lower address to the upper address.

[Action]

First, a bit map is formed in which the display dots are, for example, "1" and the non-display dots are, for example, "0", corresponding to the dot matrix of the display device. "1" in this bitmap
And the pattern becomes the visible display itself. Therefore, at the bitmap creation stage, the bitmap in a visible state is created as it is, and the creation of data is simple. In the case of continuously displaying numerical values, symbols, and the like (vertical scroll), it is only necessary to form a bitmap continuously so that the fluctuating display is visible. Next, the bitmap data thus formed is rotated by 180 degrees. Then, the data rotated by 180 degrees is read in order from the top as it is, and stored sequentially from the lower address to the upper address of the memory. At this time, the left side of the bit map of the data rotated by 180 degrees is the upper bit as in the case of the normal binary number display.

【Example】

Hereinafter, the present invention will be described based on a specific example. FIG. 1 shows a three-digit dot matrix type display device used in a pachinko machine variation device. The display device comprises three display units 1, 2, 3;
Each of 2 and 3 is composed of an 8 × 8 dot matrix composed of LEDs, and is dynamically driven at a duty ratio of 1/16. In the horizontal direction of the display unit 1 and the like, bit coordinates X0 to X7 are assigned from left to right, and in the vertical direction, bit coordinates of bit coordinates Y0 to Y7 are assigned from bottom to top. I have. The display is performed line by line, and the display lines are sequentially selected from bottom to top. The display row is selected by the output selection signal of the driver 7 in the display units 1 and 2, and is selected by the output selection signal of the driver 6 in the display unit 3.
The row in which the selection signal of the drivers 6 and 7 is “1” is the selected row. Only one of the 16 selected signals of the drivers 6 and 7 becomes the “1” state indicating the selected state. The display rows of the display units 1 and 2 are simultaneously controlled, and the lower row Y0
When the top row Y7 is selected in order from the top, and then the top row Y7 is selected, the selection is made from the bottom row Y0 of the display unit 3 to the top direction Y7. Then, when the top row Y7 of the display unit 3 is selected, the bottom row of the display units 1 and 2 is selected again. Display rows are sequentially selected in such a cycle. The dots in the horizontal direction of the selected row are displayed on the display units 1 and 3 in accordance with the output pattern of the driver 5 and on the display unit 2 in accordance with the output pattern of the driver 4. The drivers 4 and 5 are connected to a parallel interface 8 which has two 8-bit output ports and can select the output port, and the drivers 6 and 7 also have two 8-bit output ports and can select the output port. It is connected to the parallel interface 9. The parallel interfaces 8, 9 are connected to the data bus of the microcomputer 10. The selection signal output from the microcomputer 10 indicates whether the output data of the microcomputer 10 is to be input to the parallel interface 8 or the parallel interface 9, and whether each of the interfaces 8, 9
The driver to which the bitmap data is to be output is selected. Further, the microcomputer 10 is connected to a ROM 12 storing display data and other control programs and the like and a RAM 11 storing constants, other data and the like. Therefore, by outputting 8-bit data to one display unit from the parallel interface 8 in synchronization with the switching of the selection signal, a pattern can be displayed in order from the bottom of the display unit. Next, a method of creating bitmap data formed in the ROM 12 will be described. Peripheral devices related to game control are omitted. First, as shown in FIG. 2, regarding the display pattern of the display unit 1, when the display dot is represented by “1” and the non-display dot is represented by “0”, and when the display is continuously changed, Create bitmap data so that changes in the display can be seen. In this embodiment, the display pattern of the display unit 1 is “0”,
It is composed of 16 patterns of “1”,... “9”, “A”,. Then, the display order is changed from "0" to "".
, The bitmap is formed in a band shape from "" to "0" on the paper surface and from above to below. The pattern formed by "1" formed as shown in FIG. 2 is an actual erect visible display pattern, and is displayed continuously in order from the lower pattern to the upper pattern. Next, the bit map data shown in FIG. 2 is rotated 180 degrees on the paper to obtain the data shown in FIG. In the data shown in FIG. 3, one 8-bit data is regarded as binary display data having upper bits in the left direction and lower bits in the right direction, as in a normal binary number display. Then, in order from the top of the data shown in FIG. 3, data of a lower address on the memory, that is, data of an address having a lower storage address number is input and stored in the memory. Similarly, bitmap data relating to the display patterns of the display units 2 and 3 is created, and the data is stored in a predetermined area of the ROM 12. Next, the processing procedure of the microcomputer 10 when the display is changed using the microcomputer 10 will be described with reference to FIG. The program shown in FIG. 4 is started by interruption every predetermined scanning period. However, the initial setting step of step 100 is executed only in the first execution cycle of the start of the variable display, and in subsequent execution cycles, the execution is started from step 102 and on. In step 100, the address for reading the bitmap data of each display unit, that is, the data pointers DP1, DP2, DP3
Is initialized to the lowest address at the beginning. The selection signal data SD for creating the selection signal is initialized to 16-bit binary "1", and the scanning counter n for storing the number of scans of the display unit is initialized to 1. Next, the process proceeds to step 102, where the selection signal data SD is output, and the row corresponding to the bit of “1” is set as the selected row. The selected row is the selection signal data SD described later.
Are sequentially selected from the lower row. Note that it is preferable to clear the output of the parallel interfaces 8 and 9 before outputting the selection signal data SD, because display bleeding does not occur. Next, proceeding to step 104, it is determined whether or not the value of the scan counter n is 8 or less. When the value of the scan counter n is 1 or more and 8 or less, the display units 1 and 2 are controlled, In the case of 9 or more and 16 or less, the display unit 3 is controlled. Therefore, if the value of the scan counter n is 8 or less, the step
The process proceeds to 106, where the bitmap data (DP1) and the bitmap data (DP2) indicated by the data pointers DP1 and DP2 are output and displayed on the display units 1 and 2, respectively. On the other hand, if the value of the scan counter n is greater than 9, step 110
Then, the bitmap data (DP3) indicated by the data pointer DP3 is output to the display unit 3 and displayed. For example, in the case of the display unit 1, the data (3E) of the lowest address (0000) is output, and the bit pattern is displayed on the Y0 line. Next, in step 108 or 112, the data pointer
DP1, DP2, and DP3 are each added and updated by one. Next, the routine proceeds to step 114, where it is determined whether the value of the scan counter n is equal to 16. If the value of the scan counter n is not 16, the process proceeds to step 118, where the scan counter n is incremented by one, and the selection signal data SD is shifted left by one bit in order to make the selected row the next upper row. Shift.
Next, at step 124, it is determined whether or not the data pointers DP1, DP2, DP3 have exceeded the last address of the memory storing the bitmap data. If not, the program is terminated and the predetermined time has elapsed. After that, step 10
A similar process is repeated from 2. Thus, on the display unit 1, the data (3E) of the address (0000) is displayed on the bottom row Y0, and the address (0001) is displayed.
Is displayed on the Y1 line, and the same is repeated, and the data (00) at the address (0007) is displayed on the uppermost line Y7. At this time, the 0th bit of the data is displayed on the X0 dot of the display, and the 7th bit of the data is similarly displayed on the display.
Displayed on X7 dots. Thus, one display pattern “0” is displayed on the display unit 1. The same applies to the other display units 2 and 3. On the other hand, if the value of the scan counter n is equal to 16 in step 114, this means that the display of one cycle on the display units 1, 2, and 3 has been completed. Therefore, if the value of the scan counter n is 16, the process proceeds to step 116, where the scan counter n is initialized to 1 and the current data pointers DP1, DP2, DP3 are subtracted by 7 from the next cycle. Specify the bitmap data displayed in the bottom line Y0 in. For example, the display unit 1 displays data (3E) at the address (0001) to data (0008) at the address (0001) between the bottom row Y0 and the top row Y7 in the next cycle. Hereinafter, similarly, in the next cycle, the data (63) of the address (0002) to the data (18) of the address (0009) are displayed. As described above, the address of the data to be displayed in the bottom row is sequentially added and updated in each display cycle, so that the display of the display unit 1 changes from “0” to “” in order, for example. Thereafter, it is repeated from "0". When the display of the last pattern is completed, in order to return the display pattern to the initial "0", it is determined in step 124 whether the value of the data pointers DP1, DP2, DP3 is larger than the last address of the bitmap data. , When it becomes larger than the final address, the data pointers DP1, D
Only the values of P2 and DP3 that are larger than the last address are initialized to the first address (0000). However, in the display cycle during the transition from the display of the last data to the display of the first data, the step 12
In step 6, each time the data pointers DP1, DP2, DP3 exceed the final address, they are set to the initial address and reset.
Of the data pointers DP1, DP2, DP3 after being calculated by
Some indicate a value smaller than the initial address. Therefore, in step 120, it is determined whether or not any of the data pointers DP1, DP2, DP3 indicates a value smaller than the initial address. Then, in step 122, a correction operation of DPn = final address + 1- (initial address-DPn) is performed on the data counter DPn satisfying the condition. If scrolling is not performed, DPn =
DPn-8 may be used. Also, when the fluctuation is stopped, it is necessary to set a data pointer to the head address of the memory where the display pattern of the random number is stored before stopping the scrolling, because the random number corresponding to the determined mode is displayed. Can be stopped with a simple display pattern.

【The invention's effect】

According to the present invention, in a display screen of a two-dimensional dot matrix, from the left to the right in the horizontal direction, the lower bit to the upper bit of the memory storing the bit map correspond to each other, and from the bottom in the vertical direction. In a method of creating a bitmap stored in the memory in a two-dimensional display device that displays an upper dot in correspondence with a lower address to an upper address of the memory, a display pattern corresponding to a display state on a display screen is provided. Bitmap is formed, the bitmap is rotated 180 degrees, and the rotated bitmap is stored from the lower address to the upper address in order from the top, so it is extremely easy to create bitmap data for display It has the effect of becoming. In addition, since the bitmap data can be read out sequentially from the lower address to the upper address, and can be directly used as a display pattern per one line of the display unit, there is no need to perform processing such as bitmap conversion. Therefore, there is an effect that the load on the computer is reduced. In addition, by checking the dump list of bitmap data upside down, it becomes easy to confirm the image,
The bitmap data can be easily modified.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a configuration of a display device driven by a data creation method according to a specific embodiment of the present invention. FIG. 2 is an explanatory diagram showing bitmap data created corresponding to a visible display. FIG. 3 is an explanatory diagram showing data stored in a memory obtained by rotating the bitmap data by 180 degrees. FIG. 4 is a flowchart showing the display operation of the computer of the display device. 1,2,3 ... Display unit 8,9 ... Parallel interface 10 ... Microcomputer 4-7 ... Driver

Claims (1)

(57) [Claims] 1. A two-dimensional dot matrix display screen, in which dots extend from left to right in the horizontal direction with respect to the horizontal direction, from lower bits to upper bits of the memory storing the bit map, and lower bits in the vertical direction. A method for creating a bitmap stored in the memory in a two-dimensional display device that displays from the lower address of the memory to the upper address from the dot to the upper dot, the display corresponding to the display state on the display screen A data creating method for a two-dimensional display device, comprising forming a bit map of a pattern, rotating the bit map by 180 degrees, and storing the rotated bit map in order from a lower address to an upper address.