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AX = 4503h
Notes: Profiling is also turned on by the key combinations LeftShift + RightShift + Alt and LeftShift + RightShift + Ctrl. For PROF.COM, this call programs the CMOS clock by reading register 0Ch, and setting bit 6 of register 0Bh. It then makes sure that IRQ8 is unmasked
See Also: AX=4504h
Category: Debuggers/Debugging Tools - Int 2Fh - M
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