JPH02130040U

JPH02130040U -

Info

Publication number: JPH02130040U
Application number: JP3690889U
Authority: JP
Priority date: 1989-03-30
Filing date: 1989-03-30
Publication date: 1990-10-26

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例による計算機を示
す構成図、第２図はこの考案の計算機におけるマ
イクロプログラムの処理シーケンスのフローチヤ
ート、第３図は従来の計算機の構成図、第４図は
従来の計算機におけるマイクロプログラムの処理
シーケンスのフローチヤートである。図において、１……主記憶部、２……マイクロ
ＲＯＭ部、３……中央演算処理部、４……マツプ
ＲＯＭ部、５……セレクタ、６……アドレスカウ
ンタ、７……マイクロ履歴ＲＡＭ部である。なお
、図中、同一あるいは相当部分には、同一符号を
付して示してある。 Fig. 1 is a block diagram showing a computer according to an embodiment of this invention, Fig. 2 is a flowchart of a microprogram processing sequence in the computer of this invention, Fig. 3 is a block diagram of a conventional computer, and Fig. 4 is a block diagram showing a computer according to an embodiment of this invention. 1 is a flowchart of a microprogram processing sequence in a conventional computer. In the figure, 1...Main storage unit, 2...Micro ROM unit, 3...Central processing unit, 4...Map ROM unit, 5...Selector, 6...Address counter, 7...Micro history RAM unit It is. In the drawings, the same or corresponding parts are designated by the same reference numerals.

Claims

[Scope of utility model registration request]

A main memory section that stores a program that performs a predetermined job, a central processing section that executes instructions called from the main memory section and has arithmetic capabilities, and a central processing section that performs processing for the central processing section. A micro-fixed memory processing unit that stores sequences, a map-fixed memory unit that stores the start of a microprogram to process the instruction for the micro-fixed memory unit, and a central processing unit that stores the instructions. an address counter that constantly indicates from the minimum address to the maximum address at the same time as the start address of the map fixed storage device is accessed;
The above starting address itself can be written to the address indicated by this address counter,
A computer characterized by comprising: when an abnormality occurs in the processing sequence of the microprogram, the processing sequence of the microprogram up to the occurrence of the abnormality is retained as a history for each execution address of the microprogram of instructions.