The address has one too many zeros and is therefore placed in a memory region usually used for system memory. As a result this causes failure when trying to run a simulation with a huge amount of memory. Change the address to be within the C000'0000h - FFFF'FFFFh X86 I/O hole as was intended. Change-Id: I5d03ac19ea3b2c01a8c431073c12fa1868b3df24