Int 5A  - Ti Professional Pc - System Timer 100ms Hook                     [b]

Desc:  called from the hardware timer tick interrupt, after executing the
     first four BIOS 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

See Also: INT 43"TI Professional",INT 4C"TI Professional"

See Also: INT 58"TI Professional"