Newsgroups: comp.os.msdos.djgpp
From: pscargill AT cix DOT compulink DOT co DOT uk ("Peter Scargill")
Subject: BEGINNER -address of arrays etc - Help
Message-ID: <EHFIz7.4DH@cix.compulink.co.uk>
Organization: Compulink Information eXchange
Date: Thu, 2 Oct 1997 14:59:30 GMT
Lines: 19
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

This is my second attempt at putting this message in. What hope do I have 
of solving a C problem if I can't even send mail properly :-))

Ok, DOS program ising DJGPP. This came with the BT848 graphic chip 
development test software.

They send the address A0000 to the PCI chip via a routine so the chip can 
talk to mode 13 video memory.

I created an array large enough to hold the video data, and gave the 
routine the address of the array as &my_array.

Being a Borland programmer this looked ok but the program goes for a walk.

Actually I used (unsigned int)&my_array[0]. The compiler took it but the 
thing goes for a walk so it is obviously writing somewhere it should not.

Remember I've never used a 32 bit compiler before. Seems like a valid 32 
bit address would be sent but obviously not. Comments anyone?