#include <dpmi.h> int __dpmi_simulate_real_mode_procedure_retf_stack(__dpmi_regs *_regs, int stack_bytes_to_copy, const void *stack_bytes);
Please refer to section DPMI Specification for details on DPMI function call operation. Also see section DPMI Overview for general information.
DPMI function AX = 0x0301
This function switches to real mode with all the registers set
from the structure, including cs:ip. The function called should
return with a retf. ss:sp and flags must be set to valid
values or zero.
You may optionally specify bytes to be copied to the real mode stack, to pass arguments to real-mode procedures with stack-based calling conventions. If you don't want to copy bytes to the real mode stack, pass 0 for stack_bytes_to_copy, and NULL for stack_bytes.
-1 on error, else zero.
not ANSI, not POSIX
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