I wrote the production test program for this Chromatics MPACT! 3D RAMBUS video accelerator with built-in triple RAMDAC for LG Semicon. My program tested all digital video functionality and the linearity, THD, etc of the 24 bit True Color (8 bits each for Red, Blue and Green) video DACs. At 240 pins, it's among the biggest chips I coded for. One of the most interesting tests I coded was the PSRR test, where I modulated the analog Device Power Supply to see how much of the modulation signal ends up on the analog video outputs.