Programmable interposer circuitry

A multichip package, comprising:

• a package housing;
• a plurality of integrated circuits in the package housing;
• and
• a configurable interposer on which the plurality of integrated circuits are mounted, wherein the configurable interposer includes programmable interconnect routing circuitry that serves to perform signal routing for the plurality of integrated circuits.

A method for designing a multichip package using a circuit design tool implemented on computing equipment, wherein the multichip package includes a plurality of integrated circuits mounted on an interposer, the method comprising:

• receiving a first input from a user that specifies how the plurality of integrated circuits is routed to the interposer;
• receiving a second input from the user that specifies input-output pins for the multichip package;
• and
• performing routing connections for the plurality of integrated circuits using programmable interconnect circuitry in the interposer based on the first and second user inputs.