Recently, the software technologes being developed, the size of software increases bigger and bigger. And most programmers want to get much informations about his program.
If he knows which parts of his program execute several times and which parts does not, the exection time of the program can be reduced by modifying the most used parts. An attempt to do this has been implemented in a large computer system. The purpose to this thesis is to do this in Cromemco micro-computer system.
It is inefficient and impossible in pratice to check program counter at each time of instruction execution. Thus, statistical method, that is to say, checking program counter at every constant period, is used. Timer interrupt is introduced in order to check program counter at every constant period.
The main goal of this thesis is to plot the sampled program counter using Intelligent Graphic Printer, which is the Lab. Group Project.