[Info-vax] DLT drives and antique SCSI compatibility (was: Re: Next release of OpenVMS x86_)

[Stephen Hoffman]

On 2020-07-12 08:35:34 +0000, Terry Kennedy said:

> On Saturday, July 11, 2020 at 1:28:03 PM UTC-4, Stephen Hoffman wrote:
>> On 2020-07-10 21:58:28 +0000, Terry Kennedy said:
>> 
>>> To comment on another reply, I was told by a reliable source that the> 
>>> > TZ30 was the result of a barroom bet between a DECie and a 
>>> Mitsubishi> > engineer about the impossibility of making a half-height 
>>> DLT drive.> > Despite the "Z" in the model name, it is *NOT* a 
>>> SCSI-compatible> > device. In fact, it can hang both halves of the only 
>>> controller it was> > every supported on, the RQZX1. Simple user mode 
>>> I/O is sufficient.
>> 
>> That sounds... odd...
>> 
>> RQDX1 was MFM, and AFAIK was never used with a DLT.
> 
> Note that I said rqZx1, not rqDx1. The companion board to the 11/93 CPU.

Ah; sorry; don't recall ever meeting an RQZX1.
Don't recall seeing that widget on MicroVMS/VMS/OpenVMS.
My preferred SCSI nemesis from that era was the KZQSA.



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