Can not be measured FRAME #, it will not be able to determine whether the normal communication between the judgment Northbridge to Southbridge can only test the Northbridge to the Southbridge A-Link bus (thank I first came to Moderator correction) v – s: E (^ + {$ H) R in the 965 platform caught over the square wave of the DMI bus, so this is going to in the trial of the A-Link (965 platforms do not run the code Post address: , douban.com / www.chinafix.com.cn/thread-531259-1-1.html ) with an oscilloscope on the C154 and C162, respectively, caught the wave test after numerous debugging caught the following waveform