公开(公告)号：WO1982000376A1

公开(公告)日：1982-02-04

申请号：PCT/US1981000975

申请日：1981-07-20

Applicant: NCR CORP

Inventor： NCR CORP ,  PENTON P

IPC: G07C03/10

CPC classification number: G06F11/3419 ,  G06F11/34 ,  G06F11/348 ,  G06F2201/88

Abstract: In order to measure execution of a program, exclusive of sub-routines that may be called by a program, without modification of the program or computer hardware, comparison means (13A, 13B) is coupled to a memory bus to compare all addresses occurring on the memory bus to an upper limit number (15) and a lower limit number (17) to produce a signal at (23) which indicates if each address occurring on the memory bus is within a range represented by the upper limit number and the lower limit number. The signal is utilized to either enable incrementing of a counter at a predetermined time rate or to increment the counter once for every new address occurring on the memory bus within the range. The contents of the counter represent either the accumulated time of execution of instructions having addresses within the range or the number of instructions executed having addresses within the range.

Abstract translation: 为了测量程序的执行，排除可由程序调用的子例程，而不修改程序或计算机硬件，比较装置（13A，13B）被耦合到存储器总线，以比较在 存储器总线到上限号码（15）和下限号码（17），以在（23）处产生一个信号，指示存储器总线上发生的每个地址是否在由上限号码和下限号码表示的范围内 限制数。 该信号用于使得以预定时间速率递增计数器，或者在该范围内的存储器总线上出现的每个新地址增加计数器一次。 计数器的内容表示执行具有在该范围内的地址的指令的累积时间或执行的具有该范围内的地址的指令的数量。