Article taken from an old EGM detailing the SNES ND drive
The ill-fated Snes CD-rom drive. There's a long story behind this, apparently Nintendo orignally partnered with Sony, then went behind Sony's back to Phillips which lead to all kinds of legal trouble that prevented the machine from ever being completed. At the last minute the deal fell apart, but due to contractual obligations Phillips got it's own (notoriously crappy) Mario and Zelda games for the CDI, while Sony went on to make it's own Playstation console. The rest they say is history.