记一下Thoratec的面试

　　上周做了2个半小时的bart到了Thoratec HQ。问了以下几个问题：

1. 怎么用SystemVerilog和C++的assertion

2. 如何simulate interrupt （FreeRTOS， ARM M3）在Eclipse C++

3. 在BPSK中为什么用FIR而不是IIR？  http://iowahills.com/A8FirIirDifferences.html 和 http://www.dspguru.com/dsp/faqs/fir/basics

（It is quite possible however that the most important difference between an IIR and FIR isn't the filter itself, but rather how the filter is implemented. The beauty of FIR filters, and quite possibly their most important feature, is that they can be implemented with integer math. As you are surely aware, everyone wants small, low power, low cost, portable devices. These devices typically use a processor similar to the Texas Instruments MSP430, or an FPGA, or an ASIC.）