68040 integer module
The central CPU for the 68040 processor is the integer unit (IU). The IU contains multiple 32-bit data and address paths with heavily pipelined instruction execution control for improved performance. Frequently used instructions and addressing modes have been optimized for single cycle execution. Additionally, independent control for each pipe state yields increased throughput. Implementation of control structures for increased performance is presented, with emphasis on design trade-offs for automated logic synthesis versus full custom, hand crafted circuits. The impact of the integration of test logic on behavioral descriptions and control logic testing strategy are discussed.<<ETX>>