SUMMARY: DEC TLZ04 DAT on 4.1.3U1

From: Glenn Satchell - Uniq Professional Services (Glenn.Satchell@uniq.com.au)
Date: Thu Nov 03 1994 - 08:26:41 CST

I was trying to connect a DEC TLZ04 4mm DAT tape drive to a Sparc 10
running 4.3.1_U1.

I'd like to thank these users for their help:

Andrew McRae <andrew@mega.com.au>
Glenn Rickersey <glennr@wormald.com.au>
smithg@charon.stm.com (Gary Smith)

Glenn sent me an st_conf.c entry for a TLZ06, which he has working fine.
This should have been close enough to work:

/* DEC TLZ06 4mm cartridge */
{
        "DEC TLZ06-VA 4mm Helical Scan", 13, "DEC TLZ06",
        0x2b, 512,
        (ST_VARIABLE | ST_BSF | ST_BSR | ST_LONG_ERASE),
        5000, 5000,
        { 0x13, 0x13, 0x13, 0x00 },
        { 0, 0, 0, 0 }
}

and modified for TLZ04:

/* DEC TLZ04 4mm cartridge */
{
        "DEC TLZ04-VA 4mm Helical Scan", 13, "DEC TLZ04",
        0x2b, 512,
        (ST_VARIABLE | ST_BSF | ST_BSR | ST_LONG_ERASE),
        5000, 5000,
        { 0x13, 0x13, 0x13, 0x00 },
        { 0, 0, 0, 0 }
}

Unfortunately this entry didn't do the trick for me either, so we ended
up just moving the tape drive back onto the DEC box where it works
happily. One day we may get a TLZ06 and then I'll have this summary
filed away for reference.

regards, 

--
Glenn Satchell                    glenn@uniq.com.au  | It doesn't matter what
Uniq Professional Services Pty Ltd  ACN 056 279 335  | temperature the room
PO Box 70, Paddington, NSW 2021, (Sydney) Australia  | is, it's always room
Phone 02 380 6360 Pager 016 287 000 Fax 02 380 6416  | temperature. Steve Wright

> This is the st_conf.c entry I have created, based on the existing entry
> for an Archive Python:
> 
> {
>         "DEC TLZ04 4mm DAT", 13, "DEC     TLZ04",
>         ST_TYPE_DEC, 1024,
>         (ST_VARIABLE | ST_BSF | ST_BSR | ST_LONG_ERASE),
>         5000, 5000,
>         { 0x00, 0x00, 0x00, 0x00 },
>         {  0, 0, 0, 0 }
> },
> 
> and in stdef.h I added:
> #define ST_TYPE_DEC             0x2d    /* Digital TLZ04 DAT */ 
> 
> If I try to access the tape drive, say using 'mt -f /dev/rst1 status'
> the tape drive lights blink, the tape movement clicks away, and about
> 30 seconds later it comes back and says 'no tape loaded or offline'.
> 
> The tape is recognised correctly at boottime, so I'm pretty sure the
> first line is right :-) Some suggestions for the rest would be
> appreciated. Summary to follow of course....

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