JPS63245532A - Arithmetic control unit - Google Patents

Abstract

PURPOSE:To efficiently and accurately confirm the operation path of a microprogram with a high precision by comparing passage confirmation point information provided in the microprogram with set passage confirmation point designating information to control storage of passage point confirmation data. CONSTITUTION:The microprogram is read out from a control storage part 11 through a control part 13 and is stored in a register 15. This program is provided with a passage confirming micro instruction consisting of passage point confirmation information CMD and passage confirmation point data DATA, and information CMD is compared with passage point designating information, which is set through an event flag register 17, by a comparison detecting part 19. Data DATA is stored in a trace memory 21 in case of coincidence between both information to efficiently and accurately confirm the operation path of the microprogram with a high precision.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention is designed to check each operation bus of a microprogram assigned to an n;q machine using a microprogram control method. Arithmetic system tIl for microprogram system H method
Regarding equipment.

(Prior art) In recent years, as the types of instructions in the F1 machine with microprograms f and II tall systems have increased and their contents have become more complex, the eight microprograms that make up the instructions have become enormous. ing. A microprogram is composed of microinstructions, and it is difficult to check the 1-gram operation bus and check whether each instruction in the microprogram operates normally. This is extremely important and indispensable for microprogram controlled computers, especially for calculations 1 and 2.

(Problem to be Solved by the Invention) However, in the past, the &Ttg of the microprogram operation bus was only able to check the local operation by tracing the address of the microprogram, and it was not possible to accurately check the operation of the microprogram. There is a problem that there is no way to completely complete V&H1 in a short time and without asking questions.

The present invention has been made in view of the above, and an object of the present invention is to provide a programmable CZ f that can efficiently and accurately check the operation bus of a microprogram.
An object of the present invention is to provide a fi' control device.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the arithmetic control device of the present invention provides an arithmetic control device for a microprogram control method that checks an operation bus in a microprogram. The control device includes a passage confirmation microinstruction provided at a predetermined point of interest in a microprogram and having passage confirmation point information and passage confirmation point data, and a setting means for externally setting passage confirmation point designation information. , a comparison means for comparing whether or not the passage confirmation point information is equal to the passage confirmation point designation information set by the setting means when the passage confirmation microinstruction is read in execution of the microprogram; As a result, when the passage confirmation point information is the passage vr1 recognition point finger point designation information, the apparatus further comprises a data storage means for storing the passage confirmation Jyu data.

(f+river) The performance control device of the present invention reads passage confirmation point information and passage confirmation point data of a passage confirmation microinstruction provided at a point of interest in a microprogram, and combines this read passage confirmation point information with It compares the passing confirmation point designation information set by the setting means, and if the image information is the same, the passing confirmation point data is stored.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a block diagram of an arithmetic and control device according to an embodiment of the present invention. The arithmetic control unit shown in the figure constitutes the central processing unit of a computer that executes instructions using a microprogram control method, and includes a control storage unit 11LH that stores micro10 grams consisting of microinstructions, and the control memory. It has a control section 13 that controls the section 11. fblltl
The microinstructions of the microprogram stored in the ll storage unit 11 are sent to full 6 under the control of the control unit 13.
0 storage unit 11 and temporarily stored in the microinstruction register 15. Microinstruction register 15
The microinstructions stored in the microinstructions are decoded by a decoding section (not shown) and then executed.

In this embodiment, the microinstructions stored in the control storage unit 11 include a passage confirmation microinstruction which is a trace instruction for checking the a-bamboo bus of the microprogram. The command has passage confirmation point information and passage confirmation point data. FIG. 1 shows a state in which the passage confirmation microinstructions are stored in the microinstruction register 15. In this illustrated state, the passage confirmation point information is indicated by CMD, and the passage confirmation point data is DΔ” The passing W1 recognition information indicated by CMD is included in a part of the microinstruction's infrastructure field.

The passage confirmation microinstruction, which is a trace instruction, may be configured to double as a normal microinstruction, or may be configured as a dedicated special instruction, but in any case, it is a , that is, provided as appropriate at points of interest in the microprogram. More specifically, this passage confirmation microinstruction is provided in each of the important and necessary or all operation buses including each branch bus in the microprogram. FIG. 3 shows an example in which passage confirmation microinstructions 25 and 27 are provided for each operation bus branched by the branch instruction 23, respectively.

In this way, by providing a passage confirmation microinstruction in each operation bus of the microphone program, each microinstruction on this operation bus is executed.

In other words, each microinstruction of this operation bus is
3, when it is read out from the control storage unit 11, stored in the microinstruction register 15, decoded, and executed, the passage Tl1rt provided in this operation bus
Similarly, the micro-instructions for passing are read out from the control storage unit 11 and stored in the micro-instruction register 15, but by checking the passage confirmation micro-instructions accumulated in the micro-instruction register 15 as described below, This passage 67f means that it has passed through the operation bus where the hanging microinstruction is set! ffn, and this causes the microphone [! The purpose is to perform step 6 of the program's operation bus.

In other words, the microprograms that make up the various instructions are
There are many operation buses branched by branch instructions, etc., and a microprogram that composes a certain instruction, for example, has several operation buses, for example, five operation buses.To check the operation of this instruction A, it is necessary to , it is necessary to confirm that all five operation buses have passed when the instruction is executed, and by this, it is possible to confirm the passage of the operation bus, that is, to confirm the operation bus. It is.

For this reason, a microinstruction for passing M products is provided for each operation bus in the microprogram, and the operation bus is confirmed by detecting this passage confirmation microinstruction. In order to identify which operation bus the micro-instructions for passing belong to, the passage confirmation point data of each micro-instruction for passage confirmation is set in a different cell corresponding to each operation bus. This is to confirm that you have done so. That is, the passage confirmation microinstructions 25 and 27 shown in FIG.
As shown in TA2, by providing different passage confirmation point data corresponding to each operating bus, it is possible to identify which operating bus the vehicle has passed through. J3, this passage 1Itta point data does not necessarily need to be provided as passage confirmation microinstruction data, and may be an address on the microprogram where the passage confirmation microinstruction is set.

As mentioned above, in order to detect the passage confirmation microinstruction provided in each operation bus of the microprogram, especially the passage confirmation point information to which the instruction applies, this arithmetic and control unit uses the steps shown in FIG. Like, Tong'! An event flag register 17 sets passage confirmation point designation information corresponding to the AαC recognition pass information as an event flag, and passage confirmation point designation information, which is an event flag set in the event flag register 17, and setting in the microinstruction register 15. a comparison detection unit 19 that compares the passing confirmation point information of the passed passing confirmation micro-instruction and detects the passing gL recognition micro-instruction having passing confirmation point information equal to the passing confirmation point designation information;
When a3 and the comparison detection unit 19 detect a passage confirmation microinstruction, the trace memory 21 that stores passage confirmation point data possessed by the detected passage confirmation microinstruction as trace information under the control of the comparison detection unit 19 is transferred to the right. do.

Note that the comparison detection unit 19 performs a process shown in FIG. It has a circuit configuration like this. This circuit includes a decoder 29 that decodes the passing confirmation point information 15a (CMD) stored in the microinstruction register 15, a latch 31 that holds the decoded output from this decoder 29, and output information of the wrap 31 and an event flag. AND circuit 3 that performs an AND operation on the passing RA recognition point designation information from the register 17 and detects whether the image information is equal or not.
It is composed of 3.

Furthermore, the event flag register 17 is composed of an 8-bit register, and can set 8 levels, that is, 8 types of passing w1 recognition point designation information, and correspond to the 8 levels of passing confirmation point designation information. Microphone for passage confirmation [Constructed of 3 bits so that 8 types of passage confirmation point information for one command can be set. Therefore, in the circuit shown in FIG. 3, the passing confirmation point information 1 of the microinstruction register 15
5a is decoded by the decoder 29.

In addition, passing confirmation point designation information is event flag register 1
The setting is made by setting the bit corresponding to the bottom of the 8th bit to 1 in 7, but this setting may be done manually using a switch, for example, or by using an additional router for monitoring. A separate computer system may be provided, and the setting/resetting may be performed using this additional controller.

[Effects of the Invention] As described above, according to the present invention, a passage confirmation microphone provided at a predetermined point of interest in a microprogram [reads passage confirmation point information and passage confirmation point data of one instruction]; The read passage confirmation point information is compared with the passage confirmation point designation information set by the setting means, and when the image information is equal, the passage confirmation point data is rt! Because I remember it,
By checking this memorized passing confirmation point data, the operating bus of the microprogram can be checked efficiently, that is, in a short period of time and with high precision.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an arithmetic and control device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a main part of a comparison detection section 19 used in the arithmetic and control device of FIG. 1, and FIG. FIG. 2 is a diagram showing a part of the flow of a microprogram in which a passage confirmation microinstruction is set in the performance control device of FIG. 1;

Claims (1)

[Claims] (1) An arithmetic and control device for a microprogram control system that checks the operation bus in a microprogram, which is provided at a predetermined point of interest in the microprogram, and is provided with passing confirmation point information and passing confirmation point data. a passing confirmation microinstruction having a setting means for externally setting passing confirmation point designation information; and a setting means for externally setting passing confirmation point designation information; and a data storage for storing the passing confirmation point data when the passing confirmation point information is equal to the passing confirmation point specifying information as a result of the comparison. An arithmetic and control device comprising: means.