More details and zip file can be found in the original PSP UQM thread found here:

http://www.dcemu.co.uk/vbulletin/showthread.php?t=20763

The Ur-Quan Masters, sometimes referred to as UQM, is a port of Star Control II for modern personal computers and operating systems from the original 3DO source code released to the fan community by Toys For Bob in August 2002.