INT 5A - TI Professional PCIBM PC - SYSTEM TIMER 100ms HOOK
Desc:	called from the hardware timer tick interrupt, after executing the
	  first four 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. timing events, updating the system clock, saving
	  registers, and switching to a temporary stack (the one reserved
	  for IRQ3), but before calling INT 58
	no details available
Notes:	this interrupt is invoked on every fourth timer interrupt
	the handler for this interrupt may destroy AX,BX,DI,ES but must
	  preserve all other registers; 8 WORDs of stack space are available,
	  of which at most 4 may be used if the handler enables interrupts
	if the handler switches stacks (because more than 4/8 WORDs are
	  required), the original stack must be restored before chaining to
	  the previous handler
SeeAlso: INT 43"TI Professional",INT 4C"TI Professional"
SeeAlso: INT 58"TI Professional"