22. Assorted technical topics

22.1. The FreeBSD Booting Process

22.1.1. Loading a kernel

22.1.2. Determine the root filesystem

22.1.3. Initialize user-land things

22.1.4. Interesting combinations

22.2. PC memory utilization

22.3. DMA: What it is and how it works

22.3.1. A Sample DMA transfer

22.3.2. DMA Page Registers and 16Meg address space limitations

22.3.3. DMA Operational Modes and Settings

22.3.4. Programming the DMA

22.3.5. DMA Port Map