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Int 2F Fn FB42 PU - Borland C++ 3.0 DPMIload.exe - Simulate Real Mode In [E]
AX = FB42h
BX = 000Dh
CX = number of words to copy from protected-mode to real mode stack
DL = interrupt number
DH = flags
bit 0: reset the interrupt controller and A20 line
ES:DI -> real-mode call structure (see INT 31/AX=0300h)
Return: CX = status
0000h successful
0001h failed
See Also: INT 31/AX=0300h
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