A gate array in accordance with the invention includes a matrix of function blocks capable of being configured to implement combinational, sequential, and memory modes of operation, as well as providing tri-state drivers and buffers in useful numbers. The function block includes a logic circuit with a first bit storage unit, which is selectively configurable to behave as combinational logic or to store a first bit, and a second bit storage unit, which is also selectively configurable to behave as combinational logic or to store a second bit. The matrix of function blocks in accordance with the invention is also useful to properly distribute clocks throughout the gate array.