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From:	"rickbronson AT gmail DOT com" <rickbronson AT gmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	freedos and cwsdpmi with djgpp under Linux?
Date:	Mon, 17 Aug 2009 12:39:40 -0700 (PDT)
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I built a djgpp app using a debian Linux version of djgpp (gcc version
4.2.2) in http://www.by.kernel.org/pub/debian-cosy/dists/lenny/local/binary-i386/
  The end of my Makefile looks like:
	i386-pc-msdosdjgpp-stubify $(PROJ).exe

  My CONFIG.SYS is:

DOS=HIGH
BUFFERS=20
FILES=30
LASTDRIVE=Z
STACKS=9,256

  I run "cwsdpmi.exe -p" then run my app but it can't find XMS, this
command fails:

regs.x.ax = 0x4300;  /* EXTENDED MEMORY SPECIFICATION (XMS) v2+ -
INSTALLATION CHECK */
__dpmi_simulate_real_mode_interrupt(0x2f, &regs);

  If I add this to my CONFIG.SYS:

DEVICE=HIMEM.SYS

  The above passes but when I try to alloc memory via:

regs.x.ax = 0x0900;  /* Allocate extended memory block */
regs.x.dx = size_pg_align / XMS_BLOCK;
__dpmi_simulate_real_mode_procedure_retf(&regs);

  it fails.  Can anyone shed some light on this?

  Thanks very much.

  Rick Bronson

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