Methods for interfacing components and for writing and reading a serial data stream to and from a component associated with a parallel data stream

摘要

A method for interfacing components includes receiving a request for an access operation, and determining whether data corresponding to a requested data address is missing from memory, such as cache. Data may be converted from a first communication type to a second communication type and written to the memory and to a second one of the components during a write operation, and converted from the second communication type to a first communication type and read by the first component during a read operation. The components may be an integrated device electronics (IDE) hard disk drive and a system or controller originally designed to communicate with a modified frequency modulation (MFM) hard disk drive. Handshaking signals such as index and seek-complete signals allow the interface module to emulate operation of an MFM hard disk drive. Method for writing and reading a serial data stream to and from a component associated with a parallel data stream are also described.