From:	brin AT star DOT net (Brin)
Newsgroups:	comp.lang.pascal.misc,comp.os.msdos.djgpp
Subject:	A couple quick questions invloving GNU Pascal: Books, Accessing memory and Ports
Date:	Tue, 07 Jan 1997 01:06:21 GMT
Organization:	StarNet
Lines:	56
Message-ID:	<5as7s9$8m@acs1.star.net>
NNTP-Posting-Host:	bev220p.star.net
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hello everyone,
I realize this is a very stupid question and that it should be
painfully obvious, but I cannot seem to find the answer.  Basically, I
recently started programming in the DJGPP-GPC enviornment and have
been able to do alot the of the basic stuff, I am very familiar with
Turbo Pascal.  Unfortunentally, I am not familiar with the other
languages that the compiler is based on (ansi, extended etc.) and an
not familiar with protected mode.  I was wondering if there are any
good books/docs etc on the subject.

Also, I have been trying to find out about how to write, say a byte,
directly to memory or to read a byte directly from memory.

ie

var 
  P : ^void;

begin
  .
  .
  .
  GetMem(P, The_Space_I_Need);
  P := $A0000;                                      {Video Memory}
  . 
  .
  .
end.


  Now how do I read the and write to the memory I have allocated.  In
Turbo Pascal, i could use the mem[segment:offset] array, but that is
not available in GNU Pascal...   

  I also wish to be able to read and write to ports, of the material I
have found, I know that the port[] array that was in Turbo Pascal is
also no longer available.  What can I do in its place (ie writing to
SB registers and to the Palette registers)

Any help on any of the above problems would be of a huge help!

Thanks in advance
-Brin

                           "I am therefore I think"
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