From: "Marp" <Marp AT 0 DOT 0 DOT 0 DOT 0>
Newsgroups: comp.os.msdos.djgpp
Subject: What did I do wrong?
Date: Fri, 8 Jan 1999 19:33:49 -0500
Organization: ICGNetcom
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Ok here's my problem. I have some sources I want to get working with djgpp.
There's this one function that needed rewriting:

void CallDevice(void *ptr)
{
  static union REGS reg;
  static struct SREGS seg;

  segread(&seg);
  seg.es=FP_SEG(ptr);
  reg.x.ax=0x1510;
  reg.x.bx=FP_OFF(ptr);
  reg.x.cx=cdrom;
  int86x(0x2f, &reg, &reg, &seg);
}

I rewrote it like this:

void CallDevice(void *ptr)
{
  __dpmi_regs regs;

  dosmemput(ptr,26,__tb);
  regs.x.es=__tb >> 4;
  regs.x.ax=0x1510;
  regs.x.bx=__tb & 0x0f;
  regs.x.cx=cdrom;
  __dpmi_int(0x2f, &regs);
  dosmemget(__tb,26,ptr);
  return;
}

but my program doesn't work. I'm pretty sure this function is the problem.
(ptr points to a structure that's 26 bytes and I used
__attribute__((packed)) and cdrom is a global int) So could someone tell me
what I did wrong (if anything)? I apologize to Eli for not putting any
effort into it the last time :)