FIELD: computer engineering. SUBSTANCE: data processing device has device for accessing memory with data in response to execution of at least one instruction. It has unit for detection of possibility of each memory access operation. In addition device has unit for testing condition for detection of possibility of execution of this instruction, unit for testing condition for prevention complete execution of given instruction in cases when either memory access is invalid or current instruction cannot be executed. EFFECT: possibility to receive interrupt signals issued by preceding instructions in course of execution of current instruction. 9 cl, 4 dwg
