ac> Hi folks.  How do I directly access memory in a DOS
 ac> application (ie. _osmode == DOS_MODE) compiled with EMX
 ac> 0.9b / GCC 2.7.2?  Specifically, I want to access areas
 ac> such as 0040:004AH (current screen width), B800:0000H
 ac> (color screen text display), and so forth.  Thanks.

You have to use the dpmi translate functions to allocate a selector with
32-bit visibility. I have no idea how the emx/rsx interface works here;
with djgcc it is easy (dj's extender uses a simple MK_FP macro :-)), but
whatever method you use depends on what functions the extender provides.
Altneratively, you can call DPMI functions directly, although with emx
running without rsx, you may not have a dpmi host.

However - to be more specific with your problem - i think there *are* some
selectors automatically created to access areas of memory often accessed by
the library, including the MSDOS data area at 0x40:0 and screen at
0xb800:0. How you get at them, I have no idea anymore (sorry).

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