JPH024008B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for starting a microprogram-controlled processing device that selects and implements one of a plurality of functions or characteristics.

[Prior art]

BACKGROUND ART Conventionally, a startup method as shown in FIG. 1 has been used in a microprogram control processing device that selects and implements one of a plurality of functions or characteristics. In the example shown in FIG. 1, there are four types of functions or characteristics that can be selected: micro program start 1, initial setting section 2, control data reading section 3, control data discriminating section 4, parameter setting micro program 5, 6, 7, 8 and processing micro programs 9, 10, 11, 12.

In such a configuration, first, the initial setting section 2
Initialize registers and flags by
Next, the control data reading section 3 reads the control data into the internal register. The read control data is discriminated by the control data discriminator 4, and the jump/jump in the control data discriminator 4 is determined according to the discrimination result.
The table is referenced and the parameter setting micro
A jump destination is specified for any one of programs 5, 6, 7, and 8. All parameters for realizing the selected function or characteristic are set in the data memory by any one of the selected parameter setting microprograms 5, 6, 7, and 8.

Each parameter setting micro program 5,
Processing micro programs 9, 10, 11, and 12 are prepared next to 6, 7, and 8, respectively, and each parameter setting micro program and processing micro program are paired and one of the processing micro programs is executed. , the selected function or characteristic is realized by the control data.

However, in the case of the conventional example shown in Fig. 1,
Each parameter setting micro program needs to set all parameters, making the software redundant, and since processing micro programs are prepared separately, the software becomes even more redundant. There is. Even if the processing microprograms are shared and unified, the redundancy of the parameter setting microprograms remains, making it impossible to efficiently start up the microprogram control processing device. In order to solve this drawback, a detection circuit is provided that uses hardware to detect control data for selecting the desired function or characteristic, and the jump table is accessed by the detection circuit to specify the jump destination. Therefore, a method has been proposed in which a parameter setting micro program and a processing micro program are selected and executed (Japanese Patent Application No. 53-133438 (Japanese Patent Publication No. 58-24808)), but this method requires a detection circuit to be provided. The disadvantage is that the hardware is redundant.

[Object and structure of the invention]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method for starting a microprogram-controlled processing device without making hardware and software redundant.

In order to achieve this purpose, this invention
The control data for selecting the function or characteristic to be realized is divided into several data blocks, each data block is sequentially determined, and according to the determination results, the parameters divided into several parameter groups are set as parameters. The data memory is set sequentially for each group, and finally the shared processing micro-
It is designed to run a program.

Hereinafter, the present invention will be explained in detail using drawings showing embodiments.

〔Example〕

FIG. 2 is a flow chart showing one embodiment of the present invention. In the figure, 13 is the start of the micro program, 14 is the initial setting section, 15 is the control data reading section, 16 and 19 are the control data discrimination sections, 17, 18, 20, and 21 are the parameter setting micro program, and 22 is the processing section. micro·
It is a program. In this embodiment, the number of data blocks of control data is 2, and the number of functions that can be selected and implemented is 4 types.

First, the initial setting section 14 is executed and registers,
Initializes flags and common part data memory. Next, in the control data reading unit 15, the program counter is controlled to be in a writing wait state until the control data is written, and the process of reading the control data into the internal register is performed. The read control data consists of two data blocks, the first data block is discriminated by the control data discriminator 16, and either the parameter setting microprogram 17 or 18 is selected according to the discrimination result. be done. Selected parameter setting micro program 17 or 1
8 sets the first set of parameters in the data memory.

The second data block of the control data is determined by the control data determining section 19, and the parameter setting micro program 20 is executed according to the result.
or 21 is selected. The second parameter group is set in the data memory by the selected parameter setting microprogram 20 or 21. Finally, when the processing microprogram 22 is executed, according to the values of the parameter group selected and set by the control data,
The specified function is realized. There are four combinations of parameter group settings based on control data, and four types of functions that can be realized.

Furthermore, if the number of data blocks of the control data is increased to three, the number of combinations of parameter group settings becomes eight, and eight types of functions can be switched.

〔Effect of the invention〕

As explained above, this invention divides control data for selecting a desired function or characteristic into several data blocks, sequentially determines each data block, and selects several parameter groups according to the results of the determination. One of the multiple functions or characteristics can be selected by sequentially setting parameters in the data memory for each parameter group, and finally executing a shared processing microprogram. This has the effect that the micro program controlled processing device that can be realized can be started up efficiently with less software and hardware.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an example of a conventional method for starting a microprogram control processing device, and FIG. 2 is a flowchart showing an embodiment of a method for starting a microprogram control processing device according to the present invention. 1, 13... Start of micro program, 2, 14... Initial setting section, 3, 15... Control data reading section, 4, 16, 19... Control data determining section, 5, 6, 7, 8, 17, 18, 20,
21...Parameter setting micro program,
9, 10, 11, 12, 22...processing micro-
program.

Claims (1)

[Claims] 1 A processing microprocessor whose functions or characteristics change depending on the parameter values written to the data memory.
In a microprogram control processing device that is composed of one or more parameter setting micro programs that set a program and a parameter group, each data block is composed of one or more data blocks, and each data block is control data that has parameter group setting information. After the control data is written, the control data is discriminated in units of data blocks, and according to the discrimination result, the parameter setting micro program is selected and executed to set the parameter group in the data memory. - A method for activating a micro-program-controlled processing device, characterized in that one of a plurality of functions or characteristics is selected and realized by sequentially executing the same number of blocks and finally executing the processing micro-program.