Patent ID: 8134568

Claim:
A multiple graphics adapter processing system, comprising: a first graphics device having a first associated frame buffer configured to store graphics data associated with the first graphics device; a second graphics device having a second associated frame buffer configured to store graphics data associated with the second graphics device; and a bridge device configured to: store a first memory range defining a redirection region corresponding to a bloated register space within a prefetchable memory address space and a second memory range defining a remap region within the prefetchable memory address space, wherein a first portion of the first memory range is associated with the first graphics device and a second portion of the first memory range is associated with the second graphics device, and wherein each memory address in the second memory range is associated with both the first graphics device and the second graphics device, and output a memory access associated with the prefetchable memory address space to both the first graphics device and the second graphics device when a first memory address associated with the memory access is within the second memory range and outside the first memory range, wherein the first graphics device is configured to specify a bloated register space requirement that indicates the size of the bloated register space within the prefetchable memory address space.