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Date:      Sun, 5 Jul 1998 10:46:47 +0930
From:      Greg Lehey <grog@lemis.com>
To:        Willem Jan Withagen <wjw@surf.IAE.nl>, hackers@FreeBSD.ORG
Cc:        scsi@FreeBSD.ORG
Subject:   Re: Apollo tapes (was: Variant Link implementation, continued)
Message-ID:  <19980705104647.O358@freebie.lemis.com>
In-Reply-To: <199807041328.PAA26905@surf.IAE.nl>; from Willem Jan Withagen on Sat, Jul 04, 1998 at 03:28:37PM %2B0200
References:  <wjw@surf.IAE.nl> <199807030025.TAA18925@nospam.hiwaay.net> <199807041328.PAA26905@surf.IAE.nl>

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On Saturday,  4 July 1998 at 15:28:37 +0200, Willem Jan Withagen wrote:
> In article <199807030025.TAA18925@nospam.hiwaay.net> you write:
>> In the early bad old days of DAT (more correctly known as DSS) there
>> were more problems than there should have been with one tape drive not
>> being able to read tapes from another, all other things the same.
>
> Oke, My drive is again on line:
>
> [~] wjw@digi> mt stat
> Present Mode:   Density = X3B5/88-185A Blocksize variable
> ---------available modes---------
> Mode 0:         Density = 0x00         Blocksize variable
> Mode 1:         Density = X3.136-1986  Blocksize = 512 bytes
> Mode 2:         Density = X3.39-1986   Blocksize variable
> Mode 3:         Density = X3.54-1986   Blocksize variable
>
> looking at: man mt:
> The different density codes are as follows:
>
>            0x0  default for device
>            0xE  reserved for ECMA
>
>            Value Tracks Density(bpi) Code Type  Reference     Note
> 	   ........
>            0x13    1     61000       DDS   CS   X3B5/88-185A  4
>  	   0x14    1     43245       RLL   CS   X3.202-1991   4
>            0x15    1     45434       RLL   CS   ECMA TC17     4
>
> Which are 3 DAT formats. And thus it is a DDS-coded tape.

This describes the tape unit, not the tape.  We've already established
that it can't read the tape.

> Anybody with more suggestions?? (other than finding the "old" tapedrive)

Give up?  Or send them to Mike?

Greg
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