JPH03216738A - Data terminal device - Google Patents

Abstract

PURPOSE:To shorten the required time for the loading and unloading of a program, and to simplify operation by providing a processor which executes the loading and unloading of a designated kind of program by a system switch unit. CONSTITUTION:Whether the program is loaded or unloaded is designated by a system switch unit 24, and when loading the program, a micropocessor 23 detects the kind of the program to be loaded from that system switch unit 24 and loads the program to a prescribed memory area of a storage device 16. When unloading the program, the kind of program to execute the unloading following the system switch unit 4 is discriminated, and the program is unloaded from a corresponding memory area in the storage device 16. Thus, when executing the loading or the unloading of the program, the required time can be shortened and the operation can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data terminal device such as a handy data terminal.

[Conventional technology] As a technology for loading system programs, etc. into the storage device of a data terminal device such as a handy data terminal, and unloading a system program, etc. from the data terminal device, the RS-232C interface has been used from an external personal computer. load or unload via, or
A technique is known in which data is loaded onto or unloaded from a memory card via a memory card interface provided in a handy data terminal.

When loading or unloading programs such as system programs using such conventional technology, all programs are loaded or unloaded at once, or the operator specifies the addresses of the programs to be loaded or unloaded one by one. By doing so, I was setting the memory area, etc.

[Problems to be Solved by the Invention] According to such conventional technology, there is a problem in that even when only a part of the system program needs to be loaded, the entire program is loaded, which takes a long time. When setting a memory area to be loaded by specifying an address for some system programs, there is a risk that a non-target area may be updated due to an erroneous operation.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a data terminal device that can shorten the time required and simplify operations when loading or unloading a program.

[Means for Solving the Problems] According to the present invention, the above-mentioned object is to provide a system in which one of loading and unloading of a program can be specified, and the type of program to be loaded or unloaded can be arbitrarily specified in advance. This is achieved by comprising a switch unit and a processor that loads or unloads the type of program specified by the system switch unit.

[Function] When the system switch unit specifies whether a program is to be loaded or unloaded, the microprocessor detects the type of program to be loaded from the system switch unit and loads it into the storage device. Load the program into a predetermined memory area. When unloading a program, the type of program to be unloaded is determined according to the system switch unit, and the program is unloaded from the corresponding memory area in the storage device.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram schematically showing a handy data terminal as an embodiment of the present invention.

In the same figure, 11 is an initial program loading ROM equipped with an initial program to be loaded first.
, 12 is a Kanji character memory, 13 is a memory card through which programs are loaded or unloaded when necessary via a memory card interface 14, and l5 is a liquid crystal display for output display.

Furthermore, in the same figure, l6 is a RAM in which programs are loaded or unloaded into the memory area, l7 is a keyboard, l8 is a backup battery, and 19 is data and programs that are transferred from an external personal computer 20 to an RS-232C cable 2l. An RS-232C interface performs input, 22 is a bus connecting these, and 23 is a processor that controls loading and unloading of programs to and from the external personal computer 20, memory card 13, and the like.

A system switch unit 24 is connected to the bus 22 . This system switch unit 24 is equipped with a plurality of switches, and includes settings for load mode or unload mode, settings for the type of program to be loaded,
Configure the type of program to be unloaded, etc.

Next, the load and unload processing operations of the handy data terminal having such a configuration will be explained with reference to the flowchart shown in FIG.

First, when loading or unloading a program on a handy data terminal, each switch of the system switch unit 24 is switched in advance. This allows designation of loading or unloading of a program and designation of the type of program to be loaded or unloaded.

When the handy data terminal is powered on, the microprocessor 23 detects the switching state of its system switch unit 24 in step Sl. Next, in step S2, it is determined from the detected state of the system switch unit 24 whether the load mode or the unload mode is designated.

If it is determined that the program load mode is designated, the process advances to step S3, and it is checked from the state of the system switch unit 24 whether the program to be loaded is an application program.

If it is an application program, the process advances to step S4 to set the memory area of RAMI6. Subsequently, in step S5, the application program is loaded into this memory area.

After this loading is finished, or if it is determined in step S3 that the program to be loaded is not an application program, the process advances to step S6, and it is checked from the state of the system switch unit 24 whether or not the program to be loaded is a system program. .

If it is determined that the system program is to be loaded, a memory area of the RAM 16 is allocated in step S7. Subsequently, in step S8, the system program is loaded into this memory area.

After finishing this loading or if it is determined in step S6 that the program to be loaded is not a system program, the process advances to step S9, and it is determined from the state of the system switch unit 24 whether or not the target to be loaded is the master data. investigate.

If it is determined that it is master data evening, step SI
Memory area allocation is performed in G. Subsequently, in step Sll, master data is loaded into this memory area. This ends the program processing.

As described above, in the program load mode, the type of program to be loaded is detected from the state of the system switch unit 24, and the detected program is loaded into a pre-allocated memory area.

On the other hand, if it is determined in step S2 that the program unload mode is designated based on the detected state of the system switch unit 24, step S3
12, the system switch unit 24 determines whether the program to be unloaded is a system program.
Check the condition.

If it is a system program, the process advances to step S13 and the system program is unloaded from a predetermined memory area of the RAM 16.

If it is determined in step S12 that the system program is not being unloaded, the process advances to step 814, and it is checked from the state of the system switch unit 24 whether or not the application program is being unloaded.

If it is an application program, step S
15, the application program is unloaded from a predetermined memory area of the RAM 16.

If it is determined in step S14 that the application program is not unloaded, the process advances to step S16, and it is determined whether or not the unloading is from the memory card 13.

If the unloading is from the memory card l3, the unloading is executed in step S17; otherwise, the process advances to step 318.

In step S18, the entire area of the RAM 16 is unloaded, and the process ends.

As mentioned above, when unloading a program, simply set the system switch unit 24 to system program, application program, memory card, or all RAM mode, depending on the type of program to be unloaded. , you can unload only the program in the memory area you need.

[Effects of the Invention] As described in detail above, according to the present invention, there is provided a system switch that can specify one of loading and unloading of a program and arbitrarily specify in advance the type of program to be loaded or unloaded. unit and a processor that loads or unloads the type of program specified by the system switch unit, reducing the time required and simplifying operations when loading or unloading programs. can be achieved. Since the operation can be simplified, it is possible to prevent an operator's erroneous operation when specifying an address, update of a non-target area, etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a handy data terminal according to an embodiment of the present invention, and FIG. 2 is a flowchart showing a procedure for loading and unloading a program in the embodiment of FIG. 16...RAM, 19...RS-23
2C interface, 20...external computer,
23... Processor, 24... System switch unit.

Claims (1)

[Claims] A system switch unit capable of specifying either loading or unloading of a program and arbitrarily specifying the type of program to be loaded or unloaded in advance, and loading or unloading of the program of the type specified by the system switch unit. A data terminal device comprising a processor that performs loading.