From owner-freebsd-bugs  Tue Jul 11  3:20: 9 2000
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Date: Tue, 11 Jul 2000 03:20:06 -0700 (PDT)
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From: Sean Winn <sean@gothic.net.au>
Subject: Re: misc/19804: printer port 3bc
Reply-To: Sean Winn <sean@gothic.net.au>
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The following reply was made to PR misc/19804; it has been noted by GNATS.

From: Sean Winn <sean@gothic.net.au>
To: Norbert Koch <NKoch@gmx.de>
Cc: sheldonh@freebsd.org
Subject: Re: misc/19804: printer port 3bc
Date: Tue, 11 Jul 2000 20:14:30 +1000

 Norbert Koch wrote:
 > 
 > The following reply was made to PR misc/19804; it has been noted by GNATS.
 > 
 > From: "Norbert Koch" <NKoch@gmx.de>
 > To: "Sheldon Hearn" <sheldonh@uunet.co.za>
 > Cc:
 > Subject: RE: misc/19804: printer port 3bc
 > Date: Mon, 10 Jul 2000 21:01:10 +0200
 > 
 >  Hello Sheldon.
 >  I do not know how much of my problem report appeared in the public. But I
 >  found solutions for
 >  both problems I described.
 
 For reference, part of this is documented in the FAQ, under "for hackers
 only"
 
 http://www.freebsd.org/FAQ/hackers.html#AEN4419
 
 To quote the interesting part of it:
 
 "Microsoft took over some of the primary printer status ports to do PnP,
 on the logic that no boards decoded those addresses for the opposing I/O
 cycles. I found a genuine IBM printer board that did decode writes of
 the status port during the early PnP proposal review period, but MS said
 ``tough''. So they do a write to the printer status port for setting
 addresses, plus that use that address + 0x800, and a third I/O port for
 reading that can be located anywhere between 0x200 and 0x3ff."
 
 Of course, no-one should be using a 19 y/o video card in a recent
 machine in MS's eyes...it can't run Windows 95 after all... 
 
 >  For the dx50: Installation fails because of pnp-scanning of port 3c3.
 >  Without pnp-scanning it works.
 >  For the eisa/dx266: Allocation of 8 io addresses at 3bc fails. Allocation of
 >  4 addresses works.
 >  Bye
 >  Norbert.
 > 
 >  > -----Original Message-----
 >  > From: Sheldon Hearn [mailto:sheldonh@axl.ops.uunet.co.za]On Behalf Of
 >  > Sheldon Hearn
 >  > Sent: Monday, July 10, 2000 2:17 PM
 >  > To: NKoch@gmx.de
 >  > Subject: Re: misc/19804: printer port 3bc
 >  >
 >  >
 >  >
 >  >
 >  > On Sun, 09 Jul 2000 08:44:16 MST, NKoch@gmx.de wrote:
 >  >
 >  > > >Description:
 >  > > The computer is an old-fashioned dx2/66 eisa pc.
 >  > > Allocation of io-port-range fails for parallel port on an old
 >  > > monochrome graphics card.
 >  >
 >  > You haven't actually explained what the problem is, here. :-)
 >  >
 >  > Ciao,
 >  > Sheldon.
 >  >
 > 
 > 
 > 
 > 
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