| 摘要 |
PURPOSE:To reduce soft processing by providing a program controlling type data processor with a counter counting up the number of times of coincidence between address data and the contents of a register. CONSTITUTION:A comparator 2 compares an address signal on an address signal line 6 with data inputted from a data bus 5 to the register 1. The comparator 1 generates an output signal every coincidence and inputs the output signal to an increment circuit of the counter 3 to count up the contents of the counter 3 by +1. On the other hand, a certain number n (an integer of n>=1) read from the data bus 5 has been previously stored in the counter 3. When the number of times of coincidence between the address signal and the contents of the register 1 reaches n times, the counter 3 outputs a break requesting signal 4. Therefore, a program control circuit is made broken status automatically at required timing.
|
