JPH06314094A - Electronic apparatus and memory cartridge - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an electronic device that performs a functional and high-level operation even when a memory cartridge is not mounted. [Structure] The CPU 1 determines whether the memory cartridge 8 is mounted or not by accessing the data of a specific address of the memory cartridge 8, and when mounted, from the predetermined address of the memory cartridge 8 and when not mounted. Reads sound data from a predetermined address of the internal ROM 6 according to a program stored in the internal ROM 6. The DEVO 2 outputs a digital sound signal according to the read sound data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device and a memory cartridge, for example, an electronic device having a memory cartridge for storing sound data and a slot for mounting the same.

[0002]

2. Description of the Related Art Conventionally, there have been devices such as personal computers and game computers in which a program or data stored in a memory cartridge is executed when the memory cartridge is mounted in a predetermined slot.

[0003]

However, the above-mentioned conventional example has the following problems. That is, in the above-mentioned conventional example, programs and data are not executed unless a memory cartridge is installed in the slot, and it is not possible to execute a functional operation in a device in which the memory cartridge is not installed. Even if it could be executed, it was only a low-level function.

Therefore, a user who intends to purchase these devices has to purchase the memory cartridge at the same time as the main body of the device, which results in extra expense. In addition, a seller who wants to display these devices must have a memory cartridge installed in the main body of the device in order to explain the functions of these devices, and there is a risk of the memory cartridge being stolen. It was

[0005]

In order to solve the above-mentioned problems, the present invention comprises the following constitutions. That is, an electronic device that executes a function according to a program,
Storage means for storing the program and data, mounting means for mounting a storage part storing data different from the data stored in the storage means, and detection means for detecting a storage part mounting state of the mounting means, A control unit that reads data from the storage unit or a storage unit mounted on the mounting unit according to a detection result of the detection unit according to a program stored in the storage unit, and a data read by the control unit. An electronic device having a processing unit for processing.

A memory cartridge mounted on an electronic device that executes a function according to a program,
The memory cartridge stores at least one set of data processed by the electronic device and a specific code indicating a type of the data at a specific address designated by the program.

[0007]

With the above structure, the data is read from the storage means or the storage section mounted on the mounting means according to the program stored in the storage means according to the mounting status of the storage section of the mounting means, and the read data is read. An electronic device to be processed, data processed by the electronic device, and a memory cartridge storing a specific code indicating the type of the data at a specific address designated by a program of the electronic device can be provided.

For example, with the above-described configuration, it is possible to provide an electronic device that performs a functional and high-level operation even if the memory cartridge is not mounted, so that it is not necessary to purchase the memory cartridge at the same time as the device body. ,
It is possible to reduce the expense of the user who purchases these devices, and it is not necessary to mount a memory cartridge in the device main body in order to explain the functions of these devices. It is possible to prevent the memory cartridge from being stolen.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic device according to an embodiment of the present invention will be described in detail below with reference to the drawings. In addition, the following explanation
A specific example of applying the present invention to an electronic musical instrument will be described, but the present invention is not limited to this, and it is obvious that various modifications can be made without departing from the gist of the present invention.

FIG. 1 is a block diagram showing a configuration example of the electronic musical instrument of this embodiment. In the figure, reference numeral 1 denotes a CPU, which is a well-known microprocessor such as 80C39, and the details of which will be described later govern the operation of this embodiment in accordance with a program stored in the internal ROM 6. 2 is digital voice P
A CM chip (hereinafter referred to as "DEVO") buffers sound data, which will be described later, and outputs, for example, an 8-bit digital signal corresponding to the sound data. The DEVO 2 includes, for example, a 5-bit program bank register (not shown) and an 8-bit data bank register (not shown). When accessing data, a built-in 2-bit counter (not shown) is provided. The count value of the address bus 2a is added to the LSB side of the address value.
Output to.

FIG. 2 is a diagram showing a configuration example of address values for accessing the memory. As shown in FIG.
When accessing the program code stored in the memory, U1 uses the 5 bits previously stored in the program bank register of DEVO2 and the 11 bits of the built-in program counter (hereinafter referred to as “PC”) to set 1
Construct a 6-bit address value. Similarly, CPU1
To access the data stored in memory,
8 bits stored in advance in the data bank register of DEVO2, 8 bits output from the data bus port DB, and 2 bits added by DEVO2 to the LSB side (bi
t0, bit1) form an 18-bit address value. Therefore, the CPU 1 receives 16 through the DEVO 2.
The program code stored in the bit address space (64 Kbytes) and the data stored in the 18 bit address space (256 Kbytes) can be accessed respectively. It should be noted that the switching between the access to the program code and the access to the data is performed by the latch 10 by the C
Address latch enable signal AL output from PU1
This is done by latching E and supplying it to DEVO2.

The DEV0 2 adds two bits (bit 0, bit 1) to the LSB side in order to simplify the data access by the CPU 1. That is, by matching the start of each data with an address value that is a multiple of 4 (that is, the two bits on the LSB side of the start address are “0”), the address of the data can be designated by a total of 16 bits. It is convenient for the CPU 1 with the bit data bus port DB.

Referring again to FIG. 1, 3 is a D / A converter, 4
The amplifier 5 is a speaker, and the digital signal output from the DEVO 2 is converted into an analog signal by the D / A converter 3, amplified by the amplifier 4, and then reproduced and played by the speaker 5. In the present embodiment, the amplifier 4 and the speaker 5 are not always necessary, and the D / A converter 3
The analog signal output from the can be sent to an external audio amplifier or the like for playback and performance.

An internal ROM 6 has a memory capacity of, for example, 128 Kbytes, and stores the program code executed by the CPU 1 and the sound data for reproducing and playing a specific sound by the DEVO 2. The internal RO
The sound data of a plurality of different sounds is stored in the M6, and the user can select a desired sound with a selection switch (not shown) connected to the CPU 1.

Reference numeral 7 denotes a memory slot, which stores a plurality of sound data by DEVO2, for example, 128 Kbytes R
This is for mounting the OM memory cartridge 8. The memory cartridge 8 and the internal ROM 6 are
Usually, different sound data is stored. In addition,
FIG. 3 is a diagram showing an example of mapping between the internal ROM 6 and the memory cartridge 8. The internal ROM 6 is changed from “0x0000” (hexadecimal number) to “0x1FFFF”, and the memory cartridge 8 is changed to “0x2”.
It is mapped from 0000 'to' 0x3FFFF 'respectively. Switching between the internal ROM 6 and the memory cartridge 8 will be described later.

Denoted at 9 is a decoder for converting a signal inputted from a plurality of switches (for example, 16 switches) constituting a keyboard for performance connected to the input side thereof into a signal having a predetermined number of bits (for example 4 bits). And sends it to the CPU 1. The CPU 1, which receives the signal from the decoder 9, receives the signal from the decoder 9, that is, the internal ROM depending on the state of the operation of the keyboard.
The read address of 6 (or the memory cartridge 8) is controlled to change the digital signal output from DEVO2. Therefore, when the user operates the keyboard or the like, in the present embodiment, the sound being played is colored (for example, riff or percussion is added) according to the operation.

Next, an outline of the operation of this embodiment will be described.
In normal operation, the CPU 1 reads a program from a predetermined address of the internal ROM 6 and the internal ROM 6 (or the memory cartridge 8) instructed by the program.
Read sound data from the address. The sound data is buffered in DEVO2, and a sound corresponding to the sound data is reproduced and played.

Further, when a signal is input from the decoder 9, the CPU 1 reads the sound data from the address of the internal ROM 6 (or the memory cartridge 8) designated by the program being executed in response to the signal, A sound is played and played according to the user's keyboard operation. Next, switching between the internal ROM 6 and the memory cartridge 8 will be described.

In the present embodiment, when the memory cartridge 8 is inserted in the memory slot 7, the reproduction performance of the sound data stored in the memory cartridge 8 is given priority.
That is, in this embodiment, when the existence of the memory cartridge 8 is confirmed at the time of startup, the sound data of the memory cartridge 8 is accessed, and when the existence of the memory cartridge 8 cannot be confirmed at the time of startup, the sound data of the internal ROM 6 is accessed. To access.

FIG. 4 is a flow chart for explaining an example of a switching procedure between the internal ROM 6 and the memory cartridge 8, which is executed by the CPU 1 when the power switch of this embodiment is turned on. In the figure, the CPU1 initializes the CPU1 and each register in the DEVO2 in step S1, sets "0x00" in the program bank register of the DEVO2 in step S2, and switches the memory bank, for example, in step S3. Enable the program bank register.

Subsequently, the CPU 1 permits the interruption in step S4. Note that the interrupt is used to prepare a plurality of the present embodiments and synchronize them when reproducing a common bass sound at the same time. Then, CPU1
Sets "0x80" in the data bank register of DEVO2 in step S5, and then outputs "0x05" from the data port in step S6 to read the data in location 5 (address "0x20014").

Subsequently, the CPU 1 determines the read data in step S7, and if the data is "0x54", the process proceeds to step S8. If the data is not "0x54", the process proceeds to step S13. move on. That is, address' 0x20
014 'indicates the space of the memory cartridge 8, and if the data read from the address is "0x54", it is determined that the memory cartridge 8 exists.

When it is determined that the memory cartridge 8 is present, the CPU 1 outputs "0x00" from the data port and outputs the location 0 (address "0x2000" in step S8).
0 ') data is read, the read data is determined in step S9, and if the data is'0x4E', the process proceeds to step S14. If the data is not '0x4E', the process proceeds to step S10. . That is, address '0x20000'
Indicates the space of the memory cartridge 8, and if the data read from the address is “0x4E”, it is determined that the memory cartridge 8 is for testing. The test memory cartridge 8 is used for confirming the operation at the end of manufacturing of this embodiment.
1 executes the test procedure.

If the memory cartridge 8 is not for testing, the CPU 1 returns to step S10 in step S10.
The data read in 8 is judged, and if the data is '0x6E', the process proceeds to step S11, and if the data is '0x6E'.
If not E ', the process proceeds to step S13. That is, if the data read in step S8 is '0x6E', it is determined that the memory cartridge 8 stores sound data, and if it is other data, it is determined that the memory cartridge 8 is not a regular memory cartridge 8. To do. That is, if the memory cartridge 8 is not a proper memory cartridge 8, the CPU 1
The sound data stored in OM6 is used.

If the memory cartridge 8 stores sound data, the CPU 1 sets "0x10" in the program bank register of the DEVO 2 in step S11, and outputs "0x10" to the data port in step S12. That is, in step S15, the CPU 1 reads the sound data stored at the location 16 (address '0x20040') or later of the memory cartridge 8 according to the program code stored at the address '0x8000' or later of the internal ROM 6, and the DEVO 2 reads Playback performance is performed according to the sound data.

If the process proceeds to step 13, the CPU
1 sets "0x0D" in the data bank register of DEVO2. That is, the CPU 1 at step S15
According to the program code stored in the internal ROM 6 at addresses '0x0000' and later, the sound data stored in the internal ROM 6 at addresses '0x3400' and later are read out,
The DEVO 2 performs a reproduction performance by the sound data.

In the above description and drawings, specific addresses and data have been shown, but this embodiment is not limited to this, and it goes without saying that arbitrary addresses and data can be set. Nor. As described above, according to the present embodiment, when the memory cartridge 8 is not mounted, the sound data stored in the internal ROM 6 is reproduced and played, and when the memory cartridge 8 is mounted, the sound data is reproduced. It is possible to provide an electronic device such as an electronic musical instrument that automatically detects the sound and reproduces and plays the sound data stored in the memory cartridge 8.

[0028]

As described above, according to the present invention, the data is read from the storage unit or the storage unit mounted on the mounting unit according to the program stored in the storage unit according to the mounting state of the storage unit of the mounting unit. An electronic device for processing the read data, and a memory cartridge for storing the data processed by the electronic device and a specific code indicating the type of the data at a specific address indicated by a program of the electronic device. Since it is possible to provide an electronic device that performs a functional and high-level operation even if the memory cartridge is not installed, it is possible to provide these devices without the need to purchase the memory cartridge at the same time as the device main body. Memory cartridges to reduce spending on purchasing users and to explain the features of these devices Eliminating the need to attached to the main body, there are effects such as preventing the memory cartridge theft when Display these devices.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of an address value for accessing a memory of this embodiment.

FIG. 3 is a diagram showing an example of mapping between an internal ROM and a memory cartridge of this embodiment.

FIG. 4 is a flowchart illustrating an example of a switching procedure between an internal ROM and a memory cartridge according to the present exemplary embodiment.

[Explanation of symbols]

 1 CPU 2 Digital Audio PCM Chip (DEVO) 3 D / A Converter 4 Amplifier 5 Speaker 6 Internal ROM 7 Memory Slot 8 Memory Cartridge 9 Decoder 10 Latch

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI Technical indication location G11C 27/00 C 6866-5L (72) Inventor Stephen P. Caps, USA 94062 Roberta Drive 125, Woodside, Noise Toys, Inc. (72) Inventor Raymond H. Duflon, USA 94062 Woodside, Roberta Drive 125, Noise Toys, Inc. (72) Inventor Edgar N. Bogas United States California 94062 Woodside, Roberta Drive 125, Noise Toys Inc.

Claims (9)

[Claims] 1. An electronic device for executing a function according to a program, comprising: a storage unit that stores the program and data; and a mounting unit that stores a storage unit that stores data different from the data stored in the storage unit. A storage unit of the mounting unit, a detection unit for detecting a mounting state of the storage unit, and a program stored in the storage unit from the storage unit or the storage unit mounted in the mounting unit according to a detection result of the detection unit. Therefore, an electronic device having a control unit for reading data and a processing unit for processing the data read by the control unit. 2. The electronic device according to claim 1, wherein the detection unit determines whether or not the storage unit is attached to the attachment unit by accessing data at a specific address of the storage unit. . 3. The detection means determines whether or not the storage means is attached to the attachment means and the type of the attached storage portion by accessing data of a specific address of the storage portion. The electronic device according to claim 1. 4. The control unit reads data from the storage unit when the detecting unit determines that the storage unit is attached to the mounting unit, and the determination unit stores the data in the mounting unit. 4. The electronic device according to claim 2, wherein when it is determined that the unit is not attached, the data is read from the storage unit. 5. The electronic device according to claim 1, wherein the processing means processes the data read by the control means and outputs a digital sound signal. 6. The electronic device according to claim 1, wherein the storage unit is a memory cartridge. 7. A memory cartridge mounted on an electronic device that performs a function according to a program, the at least one set of data being processed by the electronic device, and the data at a specific address designated by the program. A memory cartridge, which stores a specific code indicating a type. 8. The memory cartridge according to claim 7, wherein when the specific code indicates sound data, the electronic device outputs a digital sound signal by reading and processing the data. 9. The memory cartridge according to claim 7, wherein the start address of the data matches a multiple of 4.