[sdiy] Ensoniq ASR-X weirdness

[Travis Thatcher]

I've got a terminator and a scsi cd drive I can try on the end of the
chain tomorrow. I think it is weird that even if I insert a brand new
pc formatted zip disk the status still says 'Unreadable'. I thought
the ASR-X used DOS formatting... I may just give up in the end and get
an sd floppy emulator. I don't plan on putting huge samples on this
thing but it'd be nice to have the larger storage option.

On Tue, Dec 1, 2015 at 4:35 PM, BrightBoy <jdec at mindspring.com> wrote:
> See if you can track down an APS Sentry II SCSI terminator
> (or an APS SCSI enclosure that also has the same built-in/selectable
> termination)
>
> I also ran across this which might provide some clues:
>
> http://www.chickensys.com/kb/eps-asr/004.html
>
> Jeff
>
> -----Original Message-----
>>From: Dan Snazelle <subjectivity at hotmail.com>
>>Sent: Dec 1, 2015 4:05 PM
>>To: Sarah Thompson <plodger at gmail.com>
>>Cc: Synth DIY <synth-diy at dropmix.xs4all.nl>
>>Subject: Re: [sdiy] Ensoniq ASR-X weirdness
>>
>>When I had an eps16+ I had to buy an old external scsci drive to put in the chain after the Iomega Zip drive
>>This was purely to terminate the scsci as the hard-drive didn't even have much storage
>>
>>Sent from my iPhone
>>
>>> On Dec 1, 2015, at 12:54 PM, Sarah Thompson <plodger at gmail.com> wrote:
>>>
>>> You could ring out the lines and look for the resistance to ground. If termination is on, it should be relatively low. If it's off, then it would be a few k ohms. Some kinds of active termination may fake out your meter, however.
>>>
>>> Another option would be to hook everything up as normal and fire it up and look at the signal with a good low capacitance scope probe, active preferably, and see whether the edges are nice and square or whether they are ringing. Ideally you'd want to use a fairly fast scope, but SCSI is fairly slow by modern standards.
>>>
>>> Sarah
>>>
>>>> On Dec 1, 2015, at 8:36 AM, Travis Thatcher <recompas at gmail.com> wrote:
>>>>
>>>> Thanks Dave,
>>>>
>>>> I wonder if there's an issue with the termination...I think Iomega Zip
>>>> drives are meant to work without mods with the ASR X however I'm
>>>> curious if the internal termination of the ASR is malfunctioning. It
>>>> is set to 'on' in the settings. Does anyone know how to actually
>>>> electrically test termination on a scsi chain?
>>>>
>>>>> On Mon, Nov 30, 2015 at 8:25 PM, Dave Brown <davebr at earthlink.net> wrote:
>>>>> I don't know anything about ASR-X.  I have the EPS 16+.  What I do know on
>>>>> this version the SCSI bus attenuation power has to come from the drive which
>>>>> is very non-standard (in my experience).  I've yet to see a drive that
>>>>> enables this easily so on my drives I have to modify them to provide it (the
>>>>> drive provides the power to the EPS 16+ for termination in the synth).  I
>>>>> don't know if the ASR-X does this or not but it might be worth checking on
>>>>> the SCSI instructions.  Just a wild guess.
>>>>>
>>>>> Dave
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Synth-diy [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of
>>>>>> Travis Thatcher
>>>>>> Sent: Monday, November 30, 2015 3:06 PM
>>>>>> To: Synth DIY
>>>>>> Subject: [sdiy] Ensoniq ASR-X weirdness
>>>>>>
>>>>>> Not necessarily synth DIY so apologies but I'm stumped on this one. I have
>>>>> an
>>>>>> ASR-X (the black one) that won't format Zip disks. It starts to format and
>>>>> then
>>>>>> stops at 1.1% every time. I've tried 2 different zip drives and many
>>>>> different
>>>>>> brand new discs with the same results every time. Tried at least 2
>>>>> different
>>>>>> scsi cables as well. Has anyone else experienced this? I unfortunately
>>>>> don't
>>>>>> have access to a scsi hard drive or another device to test stuff with. Any
>>>>>> suggestions would be greatly appreciated.
>>>>
>>>>
>>>>
>>>> --
>>>> http://www.travisthatcher.com
>>>> http://www.soundcloud.com/thevoiceofsaturn
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