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From: Andreas Schulz <ats@freebsd.first.gmd.de>
Message-Id: <199505280854.KAA03668@freebsd.first.gmd.de>
Subject: Re: SoundBlaster SB16 + SCSI
To: crtb@upcoming.dcrt.nih.gov (Chuck Bacon)
Date: Sun, 28 May 1995 10:53:57 +0159 (MET DST)
Cc: questions@FreeBSD.org
In-Reply-To: <199505221938.PAA27089@upcoming.dcrt.nih.gov> from "Chuck Bacon" at May 22, 95 03:38:43 pm
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> I've tried repeatedly to install a SB16-SCSI in my box with 2.0R,
> successlessly.  Here's the terse version:

> 3. Has worked well with AHA-1542??, with a NEC CDROM and a disk.
> 4. The original 1542 was at 0x330, but the SB16-SCSI can only be
>    switched between 0x340 and 0x140.

> 6. Built a kernel just like the one I used with the 1542, changing
>    controller  aha0  at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
> 	to
>    controller  aha0  at isa? port   0x140   bio irq ? drq 6 vector ahaintr
> 8. At boot time I get "aha0 not recognized at 0x140", otherwise a
>    good kernel.

You are using the wrong driver. The SB16 SCSI is compatibel with the
Adaptec 1522 chip. This uses the aic0 driver so you must be using:

controller aic0 at isa? port 0x140 bio irq 11 vector aicintr

instead.
Expect a performance hit if you exchange a 1542 with an aic6360 chip.
It may work much slower under UNIX.


	  ATS ( ats@first.gmd.de or ats@cs.tu-berlin.de )

Andreas Schulz  GMD-FIRST     12489  Berlin-Adlershof  Rudower Chaussee 5
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