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Re: SCSI hardisk not detected.

daemon@ATHENA.MIT.EDU (Peter S Galbraith)
Sat Nov 9 08:26:46 1996

To: "Bhargava, Harsh ROLM SC" <Harsh.Bhargava@siemenscom.com>
CC: linux-scsi@vger.rutgers.edu
Date: 	Fri, 08 Nov 1996 10:41:02 -0500
From: Peter S Galbraith <rhogee@mixing.qc.dfo.ca>


> Hello,
> I am a installing Linux for the first time.

Welcome.

> The log file after booting from the Bootdisk (prepared from aha1542.s)   
> and rootdisk(prepared from color.gz)
> shows like this:
> 
> <4>scsi : 0 hosts.
> <4>scsi : detected total.
> 
> Host Adapter is present at port #230
> The setting for it are:
>  IRQ     11
>  DMA Channel    5
>  SCSI ID    7
>  SCSI Parity Checking   Enabled
>  DMA Transfer Rate   5.0 MB/sec
>  SCSI Termination   Enabled

You are using a non-standard port for the SCSI card.  When you get the
`boot' prompt after initially booting with the installation boot disk,
you'll need to pass parameters like so:

/*
 * LILO params:  aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]
 *
 * Where:  <PORTBASE> is any of the valid AHA addresses:
 *			0x130, 0x134, 0x230, 0x234, 0x330, 0x334
 *	   <BUSON>  is the time (in microsecs) that AHA spends on the AT-bus
 *		    when transferring data.  1542A power-on default is 11us,
 *		    valid values are in range: 2..15 (decimal)
 *	   <BUSOFF> is the time that AHA spends OFF THE BUS after while
 *		    it is transferring data (not to monopolize the bus).
 *		    Power-on default is 4us, valid range: 1..64 microseconds.
 *	   <DMASPEED> Default is jumper selected (1542A: on the J1),
 *		    but experimenter can alter it with this.
 *		    Valid values: 5, 6, 7, 8, 10 (MB/s)
 *		    Factory default is 5 MB/s.
 */

so...

boot: ramdisk aha1542=0x230

Hopefully, this will work.
--
Peter Galbraith, research scientist                <galbraith@mixing.qc.dfo.ca>
Maurice-Lamontagne Institute, Department of Fisheries and Oceans Canada
P.O. Box 1000, Mont-Joli Qc, G5H 3Z4 Canada  -- 418-775-0852 - FAX 418-775-0546


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