PORTIBM PC Portable (uses same BIOS as XT) 0604-0607 - Gravis Ultra Sound Daughter Card by Advanced Gravis
Range:	dipswitch selectable from PORTIBM PC Portable (uses same BIOS as XT) 0530h-0533h, PORTIBM PC Portable (uses same BIOS as XT) 0604h-0607h,
	  PORTIBM PC Portable (uses same BIOS as XT) 0E80h-0E83h, and PORTIBM PC Portable (uses same BIOS as XT) 0F40h-0F43h