Patent ID: 7155379

Claim:
A PCI simulation component comprising: a computer processor and memory that executes and holds the following computer components: a memory-mapped I/O space simulator that simulates behavior of a simulated PCI device; an initialization component that claims an amount of memory and identifies at least some of the claimed memory as residing on a PCI bus; and, a configuration space simulator that identifies the simulated PCI device to an operating system; wherein the initialization component claims an amount of memory by reducing an amount of memory available to the operating system, at least one of the configuration space simulator and the memory-mapped I/O space simulator utilizing at least some of the claimed memory; and wherein identification of at least some of the claimed memory as residing on a PCI bus being based upon modification of an ACPI BIOS Differentiated System Description Table in order to represent at least some of the claimed memory as being part of a root of a PCI bus hierarchy.