🚀 go-pugleaf

In article <1ivbu5INN9jc@dayub.dayton.saic.com>, nitewind@repoman.dayton.saic.com (SAIC - Research Park) writes...
> 
>I have a 386SX running MS-DOS 5.0, 4 megs of RAM, and a Microsoft 
>C 6.0 compiler. I have an application where I have to allocate a large
>number of data structs, and seem to be stopped by the 640K limit.  
> 
>Is there any method for extending the program addressing space beyond 
>640K?

You have a choice of:

1) Expanded memory (via EMS driver) which is available to all generations of
   PC.

2) Extended memory (via XMS driver) is available from HIMEM.SYS, 386max, QEMM
   running on 286's and above.

3) A DOS Extender (286 or 386) such as Phar Lap's which runs your program in
   protected mode on an AT-class machine.  I.E. your program will be running in
   the approx. 3 meg or extended RAM, using it thru standard *alloc's.

All three choices have trade-offs in having to modify your source.  The first
two require the most changes but are (almost) free.  The last choice is
expensive but can be most transparent to your code (unless you're calling
DOS or using low memory -- that complicates things in protected mode).