An electronic processing boot up system and method are presented. The
electronic processing boot up system and method can utilize ROM emulation
to store bootstrap instructions and to facilitate reduction of relatively
expensive ROM. For example, a ROM emulation system and method utilizes
minimal or no ROM. An electronic processing boot up system can include a
bus, a processor, and a ROM emulation system for making bootstrap
information available to the processor. The processor can issue an
initial memory fetch request and the ROM emulation system can perform a
ROM emulation process in response to the memory fetch request. The ROM
emulation process can include receiving a fetch request for information,
translating the fetch request into memory compatible commands for
retrieving the information, holding off the processor while the
information is retrieved, and forwarding the information in a format
compatible with a reply to the memory fetch.