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Date:      Fri, 16 May 1997 19:03:50 -0700
From:      Amancio Hasty <hasty@rah.star-gate.com>
To:        Petri Helenius <pete@sms.fi>
Cc:        oliver.fromme@heim3.tu-clausthal.de (Oliver Fromme), multimedia@FreeBSD.ORG
Subject:   Re: new cd-da player 
Message-ID:  <199705170203.TAA07785@rah.star-gate.com>
In-Reply-To: Your message of "Fri, 16 May 1997 21:44:09 %2B0300." <199705161844.VAA02474@silver.sms.fi> 

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Well, I dont have any problems with my TOSHIBA CD-ROM XM-3701TA
Will try hard tonite to see if it crashes my system.

	Cheers,
	Amancio


>From The Desk Of Petri Helenius :
> Oliver Fromme writes:
>  > 
>  > I guess you are talking about my CD-DA reader called "tosha"
>  > (http://www.heim3.tu-clausthal.de/~olli/tosha/).  I am well
>  > aware that it doesn't perform jitter correction at all.
>  > There are several reasons for that:
>  > 
>  >  - I don't have access to any CD-ROM drive that requires
>  >    jitter correction.
>  >  - My own CD-ROM drive doesn't work at all with jitter
>  >    correction (for example, using the CDDA under DOS, I have
>  >    to turn jitter correction off to get it working correctly).
>  >  - It is my understanding that all newer CD-ROM drives do not
>  >    require jitter correction.  This is especially true for
>  >    SCSI drives (tosha does not support IDE drives).
>  > 
>  > Because of those reasons, I didn't take the trouble to
>  > implement jitter correction.
>  > 
> I have:
> (ahc0:6:0): "TOSHIBA CD-ROM XM-5401TA 3115" type 5 removable SCSI 2
> cd0(ahc0:6:0): CD-ROM cd present [327758 x 2048 byte records]
> 
> Guess this does not qualify as a 'new' drive since it's only
> quad-speed and I guess single-speed for CDDA applications. The problem
> is that I get panic's with 'cdd' application and bad (jittery) data
> with 'tosha' but no problem actually reading the data.
> 
> I'm trying to merge parts from tosha and cdd to make a combined
> utility that would both do jitter correction and work with the freebsd
> SCSI driver without screwing it up.
> 
> Pete





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