Configuration on Trailing-Edge of Reset
The processor samples a subset of its signal pins on the trailing-edge of reset (see Figure 36-1 on page 857) to configure some of its operational characteristics. Figure 36-2 on page 857 illustrates the signals that are sampled and the features associated with each.
Figure 36-1. The Power-On Auto-Configuration
Figure 36-2. The Pentium® 4's Power-On Configuration Pins
This raises the question of where the configuration information comes from. The chipset (specifically, the Root Complex, MCH, or North Bridge) ...
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