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To: "Bond, Jeffery" <Jeff.Bond@nectech.co.uk>
cc: "'questions@freebsd.org'" <questions@FreeBSD.ORG>,
        "'dwhite@gdi.uoregon.edu'" <dwhite@gdi.uoregon.edu>
Subject: Re: Subject: Re: 3d IDE port. How to implement in kernel? 
In-reply-to: Your message of "Thu, 09 Oct 1997 10:09:19 BST."
             <014CB6ADC0BCD0118B1B006097827D5B022CD2@exchange> 
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Date: Thu, 09 Oct 1997 12:59:37 -0700
From: Ernest Hua <hua@chromatic.com>
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> > > > Try the SB's I/O port as the IDE port, usually 0x220.
> > > 
> > > Hmm ... are you sure about this?  0x220 is usually associated with the
> > > audio portion of the card.  I had trouble when the implied port (at
> > > 0x3ee for 0x1e8) conflicted with an sio port.  Unfortunately, I was
> > > stupid enough not to notice this conflict, and fried 3 different sound
> > > cards before straightening it out.
> >
> > Pretty sure, I need to check this on the next machine I work on.  The base
> > i/o for the SB is used for a lot of stuff, not just sound.  It just
> > watches separate interrupts for the IDE data vs. the sound stuff. Again,
> > I'd want to check this.  All of my sound hardware doesn't have IDE
> > interfaces.
>
> I've got an AWE64 value with a built in IDE interface. This card sits in
> a W95 only machine (I do run FreeBSD on another machine, honest!), and
> the SB-IDE port is not currently used, but even though the sound card
> sits at the ususal SB addresses (I220 I5 D1 etc), the IDE port is
> reported as being at 0x1e8, IRQ 10 (via device manager). This is quite
> nice, because some other 'cheap' SB clones with IDE interfaces just
> stomp over the existing secondary IDE controller at 0x170, IRQ 15 (or is
> it 0x1f0, irq 14?? for the secondary?).
> 
> I've never tried this, but it should be possible to connect six IDE
> devices. I might try this later if I'm bored and feeling brave, just to
> see if it works.

I have a SB16 PnP, and the IDE port has been great for me (for extra
IDE drives) despite many screw ups on my part.  Other sound + IDE
cards, including a Yamaha board, and two no-name brands (ESS chipset),
have not been so lucky.

Ern

-- 
Ernest Hua, Software Sanitation Engineer/Chief Cut And Paste Officer
Chromatic Research, 615 Tasman Drive, Sunnyvale, CA 94089-1707
Phone: 408 752-9375, Fax: 408 752-9301, E-Mail: hua@chromatic.com
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