JP2793425B2 - Data processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processor controlled by a microprogram, and more particularly to a data processor having a mechanism for measuring various parameters.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram showing an example of a conventional data processing device. As shown in FIG. 7, the present example includes a microprogram control circuit 1 </ b> C, an operation state signal S of the microprogram, an output terminal 12 of the operation state signal S, a probe 13, a frequency counter 14 and a stopwatch 15.

In the conventional data processing apparatus shown in FIG. 7, measurement of various parameters (microprogram use rate, specific command effective rate, etc.) is performed by using an output terminal 12 and an externally provided frequency counter 14 as a probe 13. This is performed by measuring the time from when the frequency counter 14 generates an overflow after the connection by the stopwatch 14 and dividing the counter value at the time of overflow by the measured time.

[0004]

In the conventional data processing apparatus described above, when measuring various parameters, the connection between the output terminal of the data containing the sample timing and the measured data and the frequency counter and the measurement of the real time are performed manually. However, there is a problem that the measurement is troublesome and the measurement error increases.

[0005]

A data processing apparatus according to a first aspect of the present invention is a data processing apparatus controlled by a microprogram and capable of reading the time at that time from a time circuit. A measurement data register that specifies measurement data, a sample timing generation circuit that generates a sample timing by specifying the sample cycle register, a switching circuit that selects measurement data by specifying the measurement data register, and a sample timing generation circuit. An AND circuit that outputs a logical product of the generated sample timing and the output of the switching circuit; a counter that counts the output of the AND circuit; an overflow detection circuit that detects an overflow of the counter; and an output of the overflow detection circuit By microphone It is configured to include an interrupt generating circuit for generating an interrupt program.

The data processing apparatus according to a second aspect of the present invention is the data processing apparatus according to the first aspect of the present invention, wherein a means for storing the contents of the sample period register according to the first aspect of the present invention by a microprogram is provided. It is configured by changing the contents.

Further, a data processing device according to a third aspect of the present invention
In the data processing device according to the first or second invention,
Alternatively, a means for storing the contents of the measurement data register of the second invention by a microprogram is provided, and the contents are changed as necessary.

[0008]

Next, the first invention will be described with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the data processing device of the first invention. As shown in FIG. 1, in the present embodiment, a microprogram control circuit 1 for controlling the operation of a microprogram, a sample cycle register 2 for storing a sample cycle, and a sample timing generator for generating a sample timing in accordance with an instruction from the sample cycle register 2 A circuit 3, a measurement data register 4 for storing measurement data,
A switching circuit 5 for switching the operation state signal S indicating the operation state of the microprogram according to the specification of the measurement data register 4; an AND circuit 6 for obtaining a logical product of the sample timing generation circuit 3 and the output of the switching circuit 5; 7 that counts the output of the counter and adds "1"
An overflow detecting circuit 8 for detecting an overflow of the microprogram, an interrupt generating circuit 11 for generating an interrupt to the microprogram when the overflow detecting circuit 8 outputs an overflow signal F, a time circuit 9, and a time circuit 9 RA read and stored by control circuit 1
M10.

FIG. 2 is a flowchart showing an example of the operation of the first invention. As shown in FIG. 2, first, the value of the time circuit 9 is read out by the microprogram
It is stored in M10 (step 21). Next, the AND circuit 6 ANDs the sample timing generated by the sample timing generation circuit 3 and the operation state of the microprogram whose operation state signal S is selected by the switching circuit 5 (step 22). When the output result of the AND circuit 6 is "0" (step 23), the AND timing of the sample timing and the operation state of the microprogram is again performed by the AND circuit 6. If it is "1", "1" is added to the counter 7 (step 24).

At this time, if the result of the overflow detection circuit 8 has not detected an overflow (step 2).
5) The operation is started again by ANDing the sample timing and the operation state of the microprogram by the AND circuit 6. If the result of the overflow detection circuit 8 detects the overflow signal F (step 25), the interrupt generation circuit 1
1 causes the microprogram control circuit 1 to generate an interrupt (step 26). The value of the time circuit 9 is read by the microprogram control circuit 1 and the value is read from the RAM 10
Is subtracted (step 27). The value obtained by dividing the value of the counter 7 which is the index fixed value by the subtraction result is set as the result (step 28).

Next, the second invention will be described with reference to the drawings. FIG. 3 is a block diagram showing one embodiment of the data processing device of the second invention. As shown in FIG.
In addition to the circuit described above, a sample period signal T for storing a value specified by the microprogram of the microprogram control circuit 1A in the sample period register 2A is added.

FIG. 4 is a flowchart showing an example of the operation of the second invention. As shown in FIG. 4, before performing the operation described in FIG. 2, an operation of storing the sample period signal T specified by the microprogram control circuit 1A in the sample period register 2A (step 41) is added. . (Note that Steps 42 and 49 are the same as Step 21,
It operates similarly to. Further, the third invention will be described with reference to the drawings.
FIG. 5 is a block diagram showing one embodiment of the data processing device of the third invention. As shown in FIG. 5, in addition to the circuit described in FIG. 1, a measurement data signal D for storing a value specified by a microprogram of the microprogram control circuit 1B in the measurement data register 4B is added.

FIG. 6 is a flowchart showing an example of the operation of the third invention. As shown in FIG. 6, before performing the operation described in FIG. 2, the measurement data signal D specified by the microprogram control circuit 1B is transmitted to the measurement data register 4B.
(Step 61).
(Note that steps 62 and 69 are steps 21 and 2
8 operates in the same manner. )

As described above, the data processing apparatus of the present invention provides a sample timing generating circuit for generating sample tying by designating a sample cycle register, a measurement data register, and a sample cycle register, and a measurement by designating a measurement data register. A switching circuit for selecting data, an AND circuit for ANDing the sample timing generated by the sample timing generation circuit and the output of the switching circuit, a counter for counting the output of the AND circuit and adding "1", and detecting an overflow of the counter By incorporating an overflow detection circuit and an interrupt generation circuit that generates an interrupt to the microprogram based on the output of the overflow detection circuit, it is possible to measure its own various parameters (microprogram usage rate, etc.) under microprogram control. Effect It is.

Further, the data processing apparatus of the present invention has an effect that automatic measurement is enabled by providing a means for designating a sample cycle and measurement data by a microprogram.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a data processing device of the first invention.

FIG. 2 is a flowchart showing an example of the operation of the first invention.

FIG. 3 is a block diagram showing one embodiment of a data processing device of the second invention.

FIG. 4 is a flowchart showing an example of the operation of the second invention.

FIG. 5 is a block diagram showing one embodiment of a data processing device of the third invention.

FIG. 6 is a flowchart showing an example of the operation of the third invention.

FIG. 7 is a block diagram illustrating an example of a conventional data processing device.

[Explanation of symbols]

 1, 1A, 1B, 1C Microprogram control circuit 2, 2A Sample period register 3 Sample timing generation circuit 4, 4B Measurement data register 5 Switching circuit 6 AND circuit 7 Counter 8 Overflow detection circuit 9 Time circuit 10 RAM 11 Interrupt generation circuit 12 output terminal 13 probe 14 frequency counter 15 stopwatch

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) JICST file (JOIS)

Claims (3)

(57) [Claims] 1. A data processing device controlled by a microprogram and capable of reading a time at that time from a time circuit, a sample period register storing a sample period, a measurement data register designating measurement data, and the sample period register. , A switching circuit for selecting measurement data by specifying the measurement data register, and a logical product of the sample timing generated by the sample timing generation circuit and the output of the switching circuit An output circuit, a counter for counting the output of the AND circuit, an overflow detection circuit for detecting an overflow of the counter, and an interrupt generation circuit for generating an interrupt in the microprogram based on the output of the overflow detection circuit. A data processing device comprising: 2. The data processing apparatus according to claim 1, further comprising means for storing the contents of the sample period register according to claim 1 by a microprogram, and changing the contents as necessary. 3. The data processing according to claim 1, further comprising means for storing the contents of the measurement data register according to claim 1 by a microprogram, and changing the contents as needed. apparatus.