您好！我在跑评估板例程时，遇到一个问题。程序运行时没有显示报错，但是收不到PC端发过来的数据。程序运行时打印语句如下：
[C66xx_0] QMSS successfully initialized
CPPI successfully initialized
PA successfully initialized
TCP/IP Stack 'Hello World!' Application
TCP/IP Stack 'Hello World!' Application
PASS successfully initialized
Ethernet subsystem successfully initialized
Ethernet eventId : 48 and vectId (Interrupt) : 7
Verify_Init: Expected 0 entry count for Queue number = 901, found 7 entries
Registration of the EMAC Successful, waiting for link up ..
Network Added: If-1:192.168.1.113
Verify_Init: Expected 0 entry count for Queue number = 901, found 7 entries 这句话我该怎么解读呢？如果问题出在这儿，我应该朝哪个方向解决呢？
还有个问题就是，想nimu_eth.c这样的程序 ，好像不能单步运行 ，有什么解决方法呢？