1. An integrated circuit fabricated on a die comprising: a central processor on the die; a memory interface on the die connected to the central processor and connectable to a system memory; a set of attached processors on the die connected to the memory interface via a memory access bus and capable of accessing the system memory, wherein each of the attached processors is initially enabled to perform memory transfers and further wherein each of the attached processors is capable of being programmably disabled; and a redundant processor one connected to the memory access bus, wherein the redundant processor is functionally equivalent to at least one of the attached processors and wherein the redundant processor is initially disabled from performing memory transfers and wherein the redundant processor is capable of being programmably enabled when one a functionally equivalent attached processors is disabled such that the enabled redundant processor replaces the disabled attached processor.