This one was inspired by a line from Portal. Brilliant video game; GLaDOS is one of the best villains of all time! I used the following:

Nintendo NES (running a Family BASIC cartridge and utilising the 'music board' feature)

Dragon 32 (running Synther 7)

Currah Speech 64

Akai MPC500 (with Simmons SDS4 and Casio VL-Tone samples)

Samples from Portal and Portal 2