INT 53 - TI Professional PCIBM PC - SVC INTERFACE
Notes:	documented as "for system use only"; intended for multi-tasking
	  software
	this interrupt is not used by the BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly.; the default handler generates
	  a system error trap (see INT 51"TI Professional")
SeeAlso: INT 50"TI Professional",INT 54"TI Professional"