Date: Mon, 30 Mar 92 08:00:04 GMT
From: kuku AT acds DOT physik DOT rwth-aachen DOT de (Christoph Kukulies)
To: HANK AT ducvax DOT auburn DOT edu, dzabel AT cs DOT tu-berlin DOT de
Subject: Re:  termcap, emx environment?
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Status: O

>can someone contrast/compare djgpp vs. emx

djgpp is based on VCPI (not DPMI). Don't know EMX, so I don't know what memory
protection model it's based on.

djgpp is capable of executing a.out format files (go32 a.out) or it can
bind (copy /b) a stub.exe with the a.out file to an exe file. 

Nice side effect,BTW, is that I can compile my sources under SCO UNIX,
copy (NFS mount) them to my DOS system and there do only the linking to
the libraries. I'm sure, the latter step could also be done under UNIX, when
the djgpp libraries are copied to DOS. For this cross compiling I have made
changes to the gnu specs (STANDARD_PREFIX) and put the djgpp includes on the
UNIX machine. OK, I'm carried away.

As for graphics, djgpp maps the physical video memory of SVGA cards into
the virtual address space. This allows for simple graphics code. Only 8bit
(256 Color) modes are supported.

That's all I can say in a few words. I'm sure DJ can do it much better with his 
own words.

--Chris

v