From: "walker" <jsjiang AT cclk400 DOT ccl DOT itri DOT org DOT tw>
Newsgroups: comp.os.msdos.djgpp
Subject: Who can help me?
Date: Mon, 4 May 1998 12:44:20 +0800
Organization: Industtrial Technology Research Institute
Lines: 32
Message-ID: <6ijhft$3tu$1@news.itri.org.tw>
NNTP-Posting-Host: pc104049.ccl.itri.org.tw
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

I have one question about Interrupt.
My Interrupt Handler is written in C, hooking
IRQ 11 (Int vector = 0x73) as interrupt input.
My problem is : when this program is excuted in rhide debugging
environment, my interrupt handler functions normally. But after
leaving rhide, this function can not work anymore. After checking
the memory (using c:\debug), I found the interrupt handler
is not maintained in the memory after leaving rhide. How can I
maintain my code in the memory after leaving rhide? Anybody
can help me solve this problem? Thanks in advance.
Program sampled as follows
void InterruptHandler(void)
{
..................
..................
.....
}
void End_InterruptHandler()
{
}
void Init_InterruptHandler()
{  _go32_dpmi_lock_code(InterruptHandler,(long)End_InterruptHandler
                                        -(long)InterruptHandler);
   _go32_dpmi_get_protected_mode_interrupt_vector(0x73,&old_handler);
   my_callback.pm_offset = (int)InterruptHandler;
   my_callback.pm_selector = _my_cs();
   _go32_dpmi_allocate_iret_wrapper(&my_callback);
   _go32_dpmi_set_protected_mode_interrupt_vector(0x73,&my_callback);
}