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Int 0x31, AH=0x03

310300 INT 31 P - DPMI 0.9+ - SIMULATE REAL MODE INTERRUPT
310301 INT 31 P - DPMI 0.9+ - CALL REAL MODE PROCEDURE WITH FAR RETURN FRAME
310302 INT 31 P - DPMI 0.9+ - CALL REAL MODE PROCEDURE WITH IRET FRAME
310303 INT 31 P - DPMI 0.9+ - ALLOCATE REAL MODE CALLBACK ADDRESS
310304 INT 31 P - DPMI 0.9+ - FREE REAL MODE CALLBACK ADDRESS
310305 INT 31 P - DPMI 0.9+ - GET STATE SAVE/RESTORE ADDRESSES
310306 INT 31 P - DPMI 0.9+ - GET RAW MODE SWITCH ADDRESSES

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