Date: Fri, 22 May 92 14:28:36 -0400
From: Wayne Volkmuth <volkmuth AT phoenix DOT Princeton DOT EDU>
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: physical adresses in gpp
Status: O


I also have a framegrabber (Cortex-I from Imagenation), which I've been able
to get to work with DJGPP.  The framegrabber sits at the same place in memory
that a VGA card does, segment 0xA0000.  Because the video memory is remapped
by the exender, it actually shows up at 0xD0000000.  It sounds like your card
is similar, since it is sitting in the same place in memory?

Anyway, once you can see your card, you do just what you said in your post:
To access the card, you just use

        (unsigned char *) 0xD0000000

or else use inline assembly.
  Wayne