INT 2F - MS Windows - VSWITCHD - GET API ENTRY POINT AX = 1684h BX = 7FE0h (virtual device ID for VSWITCHD device) (see #02642) ES:DI = 0000h:0000h Return: ES:DI -> VxD API entry point (see #02715) 0000h:0000h if the VxD does not support an API