INTERRUPTION TEST SYSTEM OF PROCESSOR

摘要

PURPOSE:To improve the test quality by producing both plural same levels and the interruption signals having level differences at a time and causing the conflict of channels. CONSTITUTION:Terminals (a) and (b) of a processor 1 have high and low interruption levels. When a test device 2 is started, the value of an interruption interval register 3 is set to a down-counter 4. This set value is counted down. Then an interruption signal generating circuit 5 and a channel discrimination data register 6 are driven when the down-count value reaches zero. The channel number is sent to the processor 1 from the register 6 through a bus 8. Then test devices 2 and 2' send '1' to the terminal (a) through an OR circuit 7. While a test device 2'' sends '1' and the channel number to the terminal (b) through the bus 8 to produce the conflict of the channel. Thus a discrimination test is given to the processor 1.