Date:	Thu, 9 Mar 1995 18:15:03 -0500 (EST)
From:	Long Doan <ldoan1 AT osf1 DOT gmu DOT edu>
To:	Charles Sandmann <sandmann AT praline DOT no DOT NeoSoft DOT com>
Cc:	John Barrett <jbarrett AT dallas DOT geco-prakla DOT slb DOT com>,
	djgpp AT sun DOT soe DOT clarkson DOT edu
Subject:	Re: Inhibit system() swapout??

On Thu, 9 Mar 1995, Charles Sandmann wrote:

> >     I need to inhibit GO32 from swapping out my program when I do a system()
> > call. I need to have the protected mode program still in memory to handle
> > both software (from the program I am running using system()) and hardware
> > (from the device my program is controlling) interrupts. I would be equally
> > happy if there were a way to make a protected mode TSR (lotsa luck)....
> > 
> > The protected mode program is a device driver for a memory mapped device
> > located in the 4th gig of memory space with a 4 meg address window, and the
> > real mode software is legacy code that would be very difficult to convert to
> > protected mode due to large quantities of graphics routines....
> 
> I think you can do what you need to do here, but it won't be trivial.
> To be able to keep handling interrupts, you will need to run under DPMI.
> You will also need to avoid GO32/libc's system() and do the exec through
> the go32_dpmi_simulat.... type calls.
> 
> I have looked at making PM TSR's with V2, and it looks feasible (no
> promises yet).  Send me a message if you want to continue on bleeding-edge
> development :-)

How about:
set temp=z:\
(or some bogus directory)

go32 will not be able to swap anything out, and you should be OK...

Long.

+--------------------------------------------------------+
| Long Doan                          ldoan1 AT osf1 DOT gmu DOT edu |
|                                          ld AT netrix DOT com |
+--------------------------------------------------------+

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