ON Fri, 11 Sep 1998 "Mark C. Barron" <[log in to unmask]> wrote:
<snip>
>We are running an Adaptec 1522A SCSI controller.
>
>Connected to it are:
>
>ID0 - 1G Hard Drive
>ID3 - Matshita CD-ROM
>ID5 - Matshita CD-ROM
>
>We're running under DOS 6.22 <snip>
>loaded in EZ-SCSI Ver 4.02 and the system recognizes all the drives
>BUT, it give me 8 drives for each of the two CD-ROMs.

Because the hard disk is recognised and only once, I assume
the configuration is mostly correct and I think the 8 is a clue
that you may have Logical Units (LUNs) enabled. I believe
LUN support can be enabled in the ASPI manager or the device driver.

According to my (elderly) EZ-SCSI User's Guide, with a 1522A you
use the aspi2dos.sys ASPI manager, which is the same one I use.

So you should have a line in your CONFIG.SYS like this:

device=c:\scsi\aspi2dos.sys /d /z

If the default options are OK, that may be all you have.

You shouldn't have a /L switch.

On boot-up you should get a verbose installation message
because of the /d switch. If you don't have the /d switch
you should add it now and leave it, it does no harm.

This will give you a display showing the ASPI manager version,
the 1522A host adaptor configuration, and a line identifying
each detected SCSI device, which looks something like...

Host Adaptor #0 - SCSI ID 3 - LUN 0:   MATSHITA KME CD-ROM02

Each physical device should be detected only once.

At the right of the last (fifth) line of the host adapter
configuration, before the SCSI device detail lines,
you should have "LUN Support: Disabled"

(If all this flashes by too fast to read, you can try pausing
the console by keying Ctrl+S [Ctrl+S again to release], or
temporarily add the /pause switch to the aspi2dos line.)

If you have "LUN Support: Enabled", I presume you have
a /L switch which you should remove.

However, I have "LUN Support: Disabled" even though one of my drives
is a Nakamichi MBR-7 seven-CD autochanger which uses LUNs: this
is supported by its own ASPI device driver which has a /N:7 switch.

So this raises the possibility that your phantom drives might be
a product of the ASPI device driver.

If you are using aspicd.sys you should have a line in your CONFIG.SYS
 like this:

device=c:\scsi\aspicd.sys /d:aspicd0

One driver can handle all your CD drives.
Again, you shouldn't have a /L switch.

Watch the config.sys processing carefully and the driver should
show the ID of devices handled and logical drives available.
If you see more than 2 devices or more than 1 logical per device
then you should check the device driver switches and whether
you have the correct driver.

aspicd can automatically detect and support LUNs on some drives
(e.g. Pioneer DRM-600 or DRM-604X), overriding the (lack of the)
/L switch, which raises the possibility it could mistakenly
identify the drives as having LUNs.

If the problem doesn't show up there, the only other place
I can think of is the mscdex.exe line in autoexec.bat,
which should have one /:Ddevicename switch for each
identical one on an ASPI CD device manager.
(To control the sequence of DOS drive letters I load aspicd
twice with different driver names, and the MBR-7 driver,
so I have 3 /D: switches on mscdex.)

If you can run Windows, check your EZ-SCSI to see if
you have the showscsi.exe utility which will allow you to
interrogate all your SCSI devices directly by SCSI ID.
(It needs bwcc.dll and you will want showscsi.hlp too.)


Len Warner <[log in to unmask]> http://easyweb.easynet.co.uk/~len/ ICQ:10120933

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