JPS60218135A - Data processor - Google Patents

Abstract

PURPOSE:To attain high speed processing by storing a current processing mode, executing logical operation between a signal in a rewritable processing mode storage part and a specific code detecting signal and informing the processing mode and the processed contents corresponding to the code to a processing part. CONSTITUTION:A detecting part 2 storing a previously fixed specific code detects a code signal C and outputs detecting signals D1-Di to a processed contents informing part 4, the processing mode storage part 3 once stores processing mode informing signals I1-Ij sent from a processing part 5 and outputs processing mode signals M1-Mk to the informing part 4 and the informing part 4 executes logical operation or the like on the basis of the signals D1-Di and M1-Mk and outputs processed contenst informing signals V1-Vn to the processing part 5. Thus, the it is unnecessary to identify the processing mode and decide the processed contens by software in the processing part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a processing device that, when a certain specific code is detected in various processing modes, executes a process corresponding to the processing mode and the code.

[Prior art]

In general, data processing devices have multiple processing modes, and when detecting a specific code input from a line or keyboard and performing processing corresponding to that code, different processing modes perform different processing even if the same code is detected. is now possible to execute. However, in the case of conventional devices of this kind, a specific code is detected by hardware or software in the processing unit, and the processing unit reads out the current processing mode stored in advance, and finally executes it based on the contents. The content of the process was determined. Therefore, the processing content after a specific code is detected must be determined in the processing unit each time a specific code is detected, and when there are many processing modes, a large amount of processing is required to identify the processing mode 5111. This results in a decrease in the processing capacity of the processing unit, and the processing time required by the software to determine the processing content has the disadvantage that the processing cannot be completed in time if the code is input (or transferred) at high speed. there were.

[Purpose of the invention]

The present invention is to notify the processing unit from the processing unit of the processing mode and the processing content corresponding to the code when a certain code is detected in various processing modes 1 (L7) without using the software of the processing unit to determine the processing mode and the processing content corresponding to the code. The object of the present invention is to provide a data processing device that enables high-speed and efficient processing.

[Summary of the invention]

The present invention includes a processing mode storage section that is rewritable when setting or changing the processing mode and stores the current processing mode, and when a specific code is detected, performs a logical operation on the detection signal and the mode signal from the processing mode storage section. , a processing content notification unit is provided to notify the processing content to the processing unit, and each time a specific code is detected, instead of having the processing unit determine the processing content, the hardware makes the decision and notifies the processing unit of the processing content. That's what I did.

[Embodiments of the invention]

FIG. 1 shows block countries in one embodiment of the present invention.

In FIG. 1, I is an input terminal for code signal C, 2 is i
(i≧l integer) predetermined specific codes are stored, and when they are compared with the input code and match, a detection signal D indicating which of the i codes matched
IID71...This is a detection unit that outputs +D+. 3 receives and stores the processing notification signal I+1121..., ■ of the processing mode of j bits (an integer of j≧1), and correspondingly receives the processing mode signal M I of the bit 1~.
M7, . . . , a processing mode storage unit that outputs Mk. 4 performs logical operation processing etc. based on the detection signal and the processing mode signal, and sends n-bit (an integer of n≧2) processing content notification signals V, , V2 .・・・・・・＋V
This is a processing content notification unit that outputs y1. The processing unit 5 performs device control and data processing using software, and sends a processing mode notification signal to the processing mode storage unit 3 before processing or when changing the processing mode, and also receives processing content notification from the processing content notification unit 4. When receiving the signal, it outputs a signal R for resetting the processing content notification signal to the processing content notification unit 4 so that the next processing content notification signal can be received, and also outputs a signal R for resetting the processing content notification signal in response to the processing content 3- notification signal. Execute predetermined processing.

FIG. 2 shows the simplest embodiment of the processing content notification unit 4 shown in FIG. 14 and 15 are AND circuits 12 and 13, respectively.
When the output of ``1'' becomes ``1'', the output of
It is reset to 1.

The following is an example of the case where the processing content notification section shown in Fig. 2 is used.
The operation of the diagram will be explained. When starting data processing, a processing mode notification signal is transmitted from the processing section 5 to the processing mode storage section 3. The processing mode storage unit 3 outputs and holds a processing mode signal corresponding to this. In the most Qi pure manner, the processing mode notification signal is latched and output as is as a processing mode signal.

Now, suppose that the processing mode signal M1 is activated by the processing mode notification signal.
= 0, etc. On the other hand, since the flip-flops 14 and 15 of the processing content notification unit 4 are also set to low at the start, V, = V7 = O, and no special processing is performed by the specific code in the processing unit 5. do not have. When the data processing device becomes operational, the detection unit 2 receives a code input from the line, data transfer between input/output devices, etc.
When there is a code input, the detection section compares it with the two-digit internal code, and when they match, outputs a detection signal. The process content notification section 4 is displayed.

=1. Since M,=O is input, the inverter 11. of FIG. V,=t is set by the logical operation of the AND circuit 12 and the flip-flop 14.

When the processing unit 5 uses V, , V2 as an interrupt signal,
■Since the interrupt caused by 1 was detected, prepare for the next interrupt.
A reset signal R is outputted to reset the flip-flop 14, and a process corresponding to a predetermined value V is executed. Furthermore, if the processing mode is changed midway through, if the processing mode storage unit 3 is set to M,=1 by the processing mode notification signal, when D,=1, the AND circuit of FIG. 13. The logic operation of the flip-flop 15 causes an interrupt by v2, and the processing unit 5 outputs the reset signal R and executes the process corresponding to the predetermined value V.

In this way, by sending the processing mode of the processing unit 5 to the processing mode storage unit 3 in advance, from then on you can simply execute processing according to the processing mode and input code without having to be aware of the processing mode. good.

FIG. 3 shows another embodiment of the processing content notification section 4 shown in FIG. , is an encoder that sets ``bi'' data on only one line. Now, to the encoder 21, 1 pin 1-1M, 2 pins 1- of M, . - It is assumed that only the odd numbered lines of E7 are connected as V, , Vj/l va I va. First, if the processing mode notification signal is issued so that M7=O, then when D=1, an interrupt of ■1=1 is applied to the processing section 5. Also,
M,=1. by the processing mode notification signal. As long as M, is set to =O, when it becomes =1, an interrupt of ■2 = 1 will be generated. Similarly, M,=O, M7=1 or M,=].

If set to M7-1, when D1=1, V3. V, an interrupt occurs, and as in Fig. 2, the processing section goes to the processing section, and each time it becomes =1, the interrupt content ■m (m=1゜2, . . . ...n
) is sufficient.

FIGS. 2 and 3 merely show simple concrete examples of the processing content notification unit 4, and the same code may be supported depending on the number of comparison codes and the number of processing modes j, or in different processing modes. Various implementation methods can be considered depending on the combination of the processing contents, such as when the processing contents are changed. The processing mode notification signal III...+IJ and the processing mode signals Ml,...+Mk do not need to match in bit number or content, and when a certain processing mode notification signal is input, It is sufficient that a corresponding fixed processing mode signal is output.

Furthermore, the method of notifying the processing contents to the processing unit 5 may have a plurality of interrupt levels such as vl, .

7- When any one of them is set to 1~, 9 will be interrupted.

The processing unit may go to the processing content notification unit 4 to check the interrupt content, or instead of interrupting, the processing unit 5 periodically checks the processing content notification unit 4 to see if there is a task to be processed. It may depend on the method.

〔Effect of the invention〕

As explained above, according to the present invention, by setting the processing mode in the processing mode storage unit in advance, a certain specific code is detected, and when a certain code is detected, the processing content notification unit notifies the processing unit of the processing content. This eliminates the need for the software in the processing unit to identify the LL) processing mode and determine the processing content, and also eliminates the need to perform this judgment process every time a certain code is input. The processing capacity of - can be reduced. This is particularly noticeable when there are a large number of processing modes. In addition, when the processing content is determined by software in the processing unit, the determination process takes time, but if it is realized by hardware as in the present invention, it can be realized at high speed, increasing the code input (or transfer) speed. can also be dealt with.

8-

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing specific configuration examples of the processing content notification section in FIG. 1. 1... Code input terminal, 2... Detection section, 3...
Processing mode storage unit, 4...Processing content notification unit, 5...
processing section.

Claims (1)

[Claims] (1) In a data processing device that performs processing corresponding to the corresponding code when a specific code is detected, and has multiple processing modes and executes different processing even if the same code is detected in different processing modes, a detection unit that detects a code, a rewritable processing mode storage unit that stores the current processing mode, and performs a logical operation on the signal of the detection unit and the signal of the processing mode storage unit to correspond to the processing mode and code. A data processing device comprising: a processing content notification unit that notifies the processing unit of processing content.