Quadrature bus protocol for carrying out transactions in a computer system.

摘要

A protocol for carrying out transactions in a multiple-processor computer system comprises: dividing the transaction cycle into four quadrature states, an arbitrate state, an I/O state, a slave address state and a virtual memory state. The protocol enables the processors to determine before arbitrating whether the memory device is busy, which reduces the number of "busied" transactions. <IMAGE>