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

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?

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