The asynchronous circuit style is based on micropipelines, a style used to develop asynchronous microprocessors at Manchester University. This paper has presented some engineering work on developing a micropipeline blocksorter. The work presented in this paper demonstrates that VHDL can be used to describe the behavior of micropipelined systems. It also shows a comparison of 2-phase and 4-phase implementations in transistor count, speed and energy. Though the nature of the work is mainly engineering, there are some significant new insights gained in the course of the work.