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AX = timer count in 25ms intervals DS:DI -> timing-event table (see #03244)
Note: Documented as "for system use only"; intended for multi-tasking software
See Also: INT 50"TI Professional" - INT 52"TI Professional"
Format of TI Professional PC timing event table: Offset Size Description (Table 03244) 00h WORD offset of next event table entry 02h BYTE normally unused (FFh) 03h BYTE flags: bit 7 set if timing event active bits 6-0 not used by BIOS (0), but could be used by option ROMs 04h WORD timeout count (decremented every 25ms when active) 06h WORD offset of event handler (in segment F400h) to call on event timeout; the F400h segment allows addressing both system ROMs and the first 16K of memory (due to the 1M memory wraparound)
Category: Uncatagorized - Int 51h - T
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