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From:	pischke DOT karl-heinz AT web DOT de (Karl-Heinz Pischke)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Differences in LPT1 base address in protected/real mode?
Date:	23 Feb 2005 02:22:30 -0800
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To:	djgpp AT delorie DOT com
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Hello World,

if I try to get the LPT1 base address at 0x408 with inportw I get
FFFFh back instead of the expected 7803h ... as I googled around just
now I found out that there is a significant difference in the
addressing of memory between real and protected mode ... I guess this
is the crux of the 'phenomenon' ... unfortunately I didn't found any
document so far that could help me with finding the correct address of
0040h:0008h in the protected mode ... is anyone here in the know how
to get the LPT1 base adress from bios in protected mode?

Greetings from Cologne,

KH

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