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From: Leisner.Henr@Xerox.COM (Marty)
Newsgroups: comp.lang.c
Subject: how to peek
Message-ID: <10278@brl-adm.ARPA>
Date: Wed, 11-Nov-87 07:48:34 EST
Article-I.D.: brl-adm.10278
Posted: Wed Nov 11 07:48:34 1987
Date-Received: Fri, 13-Nov-87 21:46:17 EST
Sender: news@brl-adm.ARPA
Lines: 34


Perhaps this will help end the debate of "how to peek ram on a PC".

You can also use far pointers, although not all compilers support them.

Poke and peekword is just a variation on the following:

procdef	peek,<<offset, word>, <segment, word>>
	push	ds
	mov	ax,segment
	mov	ds,ax
	mov	bx,offset
	mov	al,ds:[bx]
	pop	ds
	mov	ah,0
	pret

procdef is a macro Aztec supplies to set up bp indexing off the stack.
Pret becomoe	pop	bp at the end.  Very handy way to program in 
assembler.


To read 0xf000:0000, call
	peek(0, 0xf000).
	
Hope this helps solve the debate.

marty
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