RISC异常/中断的属性：5种 User Within vs. Synchronous vs. User request maskable vs. between Resume vs. Exception type asynchronous vs.coerced nonmaskable instructions terminate 1/O device request Asynchronous Coerced Nonmaskable Between Resume Invoke operating system Synchronous User request Nonmaskable Between Resume Tracing instruction execution Synchronous User request User maskable Between Resume Breakpoint Synchronous User request User maskable Between Resume Integer arithmetic overflow Synchronous Coerced User maskable Within Resume Floating-point arithmetic Synchronous Coerced User maskable Within Resume overflow or underflow Page fault Synchronous Coerced Nonmaskable Within Resume Misaligned memory accesses Synchronous Coerced User maskable Within Resume Memory protection violations Synchronous Coerced Nonmaskable Within Resume Using undefined instructions Synchronous Coerced Nonmaskable Within Terminate Hardware malfunctions Asynchronous Coerced Nonmaskable Within Terminate Power failure Asynchronous Coerced Nonmaskable Within Terminate H&PCA图A.27 IF ID EX MEM WBRISC异常/中断的属性：5种 H&P CA图A.27