Int 81 - Reserved For Basic
Int 81 - Ibm Token Ring Adapter - ???
Int 81 - Buslogic Bt-946c Pci Scsi Adapter - Scratchpad Ram (not A Vector!)
Int 81 - Ami Winbios - Second Hard Drive Autodetection
Int 81 - Paragon Technology Pts/dos 6.5x, S/dos 1.0 - Api
Int 81 Fn 0200 - Gravis Ultrasound - Megaem - Process Command Line
Int 81 Fn 0202 - Gravis Ultrasound - Megaem - ???
Int 81 Fn 0300 - Gravis Ultrasound - Megaem - Load Sample ???
Int 81 Fn 0400 - Gravis Ultrasound - Megaem - ???
Int 81 Fn 2010 - Gravis Ultrasound - Mega_em V3.0+ - Int 78 Redirect
Int 81 Fn 2011 - Gravis Ultrasound - Mega_em V3.0+ - Nmi Redirect
Int 81 Fn 2012 - Gravis Ultrasound - Mega_em V3.0+ - Soundcard Irq Redirect
Int 81 Fn 2015 - Gravis Ultrasound - Mega_em V3.0+ - ???