Interrupts (IRQs) allow peripherals to interrupt the CPU.
I/O addresses are locations in the processor’s memory map for hardware devices.
Useful files to query for hardware information: /proc/interrupts, /proc/ioports, /proc/cpuinfo, /proc/devices.
Useful commands to run for hardware information: /sbin/lspci, /sbin/lsusb.
DMA allows certain devices to work directly with memory, freeing the processor (see Table 10-1).
3 (if configured in the BIOS)
fd0, fd1 (floppies 1 and 2)