Message-ID:	<341E17C2.12BD@sercomtel.com.br>
Date:	Tue, 16 Sep 1997 02:23:14 -0300
From:	Alessandro Moure <moure AT sercomtel DOT com DOT br>
Reply-To:	moure AT sercomtel DOT com DOT br
Organization:	LIEB/CIP/CPG/UEL
MIME-Version:	1.0
To:	djgpp AT delorie DOT com
Subject:	Memory address, protected mode, real mode... Arghhhhhhhhhh!

Hi. I have a MCA (multichannel analyzer) board in my computer
(gamma-ray spectroscopy) and this board has a TSR wich puts its data
available at 0xD000 (L) address. I sweep the channels of the MCA board
with 0xD000 + counter.
	The TSR is 16 bit and I am using DJGPP. The main problem is: How can I
get the data?
	I tried:
1	add = __dpmi_segment_to_descriptor(0xD000 + counter);
2	data = _farpeekl(add,0);
3	__dpmi_free_ldt_descriptor(add);
	Ok. It won't work cause add in line 2 isn't a dos segment, ETC., then I
tried:
1	add = 0xD000;
2	data = _farpeekl(_dos_ds, add*16+counter);
	Results:
	In the first code I can get only the first value of each segment, ie,
0,8,16, etc. I can't read all channels one by one.
	In the second code, I can get only trash.
	What am I doing wrong?
	Thnx in advance. I hate to bother u, but I don't know what else to do!	
	[]'s

Alessandro Moure
moure at sercomtel com br
762816
JG27

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