81 INT 81 - reserved for BASIC
81 INT 81 - IBM TOKEN RING ADAPTER - ???
81 INT 81 - BusLogic BT-946C PCI SCSI Adapter - SCRATCHPAD RAM (NOT A VECTOR!)
81 INT 81 - AMI WinBIOS - SECOND HARD DRIVE AUTODETECTION
81 INT 81 - Paragon Technology PTS/DOS 6.5x, S/DOS 1.0 - API
810200 INT 81 - Gravis UltraSound - MegaEm - PROCESS COMMAND LINE
810202 INT 81 - Gravis UltraSound - MegaEm - ???
810300 INT 81 - Gravis UltraSound - MegaEm - LOAD SAMPLE ???
810400 INT 81 - Gravis UltraSound - MegaEm - ???
812010 INT 81 - Gravis UltraSound - MEGA_EM v3.0+ - INT 78 REDIRECT
812011 INT 81 - Gravis UltraSound - MEGA_EM v3.0+ - NMI REDIRECT
812012 INT 81 - Gravis UltraSound - MEGA_EM v3.0+ - SOUNDCARD IRQ REDIRECT
812015 INT 81 - Gravis UltraSound - MEGA_EM v3.0+ - ???