On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote:
Also, the early desktop PS/2 (model 50 and such) had the controller
integrated on the drive and those were Maxtor as I recall. The PS/2
shipped in 1987 and we had the drives in labs at least 12-18 months
prior (memory is dim on this right now).
No.
On 9/29/17 8:56 AM, Henk Gooijen via cctalk wrote:
> Now I'm looking for 8" mag tapes/reels that will fit!
http://www.ebay.com/itm/311973810676
even a good brand.
> On Oct 5, 2017, at 2:53 AM, Christian Corti via cctalk
> wrote:
>
> On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote:
>> Also, the early desktop PS/2 (model 50 and such) had the controller
>> integrated on the drive and those were Maxtor as I recall. The PS/2 shipped
>> in 1987 and we had the dr
Aaa, thanks! I already snatched this auction:
http://www.ebay.com/itm/Datamastet-9-Track-Mag-Tapes-Brand-New-Case-of-10/112152910883
I have no brand awareness for this sort of thing so I hope they work...
=]
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Thu, Oct 5, 2017 at 11:53 AM,
On 10/05/2017 10:53 AM, Al Kossow via cctalk wrote:
On 9/29/17 8:56 AM, Henk Gooijen via cctalk wrote:
Now I'm looking for 8" mag tapes/reels that will fit!
http://www.ebay.com/itm/311973810676
even a good brand.
Those all look like 10.5" reels.
Jon
On 10/05/2017 09:35 AM, Jon Elson via cctalk wrote:
> Those all look like 10.5" reels.
Yup. As a guide, the hub hole in a reel of tape is abou 3.75" in diameter.
--Chuck
> On Oct 4, 2017, at 9:58 AM, Evan Koblentz via cctalk
> wrote:
>
>>> Here's a phone video from a recent repair workshop at the VCFed
>>> museum in New Jersey. Bill Dromgoole is demonstrating progress on one
>>> of the tape drives for our Sperry-Rand Univac 1219B mainframe (circa
>>> mid-1960s
I suspect this might start another discussion, but as I understand it Apple had
little to do with the evolution of SASI into SCSI.
Shugart Associates published SASI in 1981 and took it to ANSI in 1982 where
they renamed it SCSI to avoid using a vendors name.
To quote from the draft SCSI 1 stan
On 2017-10-05 12:57 PM, Guy Sotomayor Jr via cctalk wrote:
On Oct 5, 2017, at 2:53 AM, Christian Corti via cctalk
wrote:
On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote:
Also, the early desktop PS/2 (model 50 and such) had the controller integrated
on the drive and those were Maxtor as I recall
> On Oct 5, 2017, at 11:26 AM, Paul Berger via cctalk
> wrote:
>
>
>
> On 2017-10-05 12:57 PM, Guy Sotomayor Jr via cctalk wrote:
>>> On Oct 5, 2017, at 2:53 AM, Christian Corti via cctalk
>>> wrote:
>>>
>>> On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote:
Also, the early desktop PS/2 (mod
On 10/05/2017 11:18 AM, Tom Gardner via cctalk wrote:
> I suspect this might start another discussion, but as I understand it Apple
> had little to do with the evolution of SASI into SCSI.
> Shugart Associates published SASI in 1981 and took it to ANSI in 1982 where
> they renamed it SCSI to avoi
On Thu, 2017-10-05 at 11:50 -0700, Chuck Guzis via cctalk wrote:
>
> What I found curious was the CDC manual that called SCSI "SASI
> subset".
> To me that says that SASI was the more elaborate protocol and SCSI
> initially picked and chose from it.
I think that's just bad/ambiguous wording and t
On 10/05/17 20:18, Tom Gardner via cctalk wrote:
I suspect this might start another discussion, but as I understand it Apple had
little to do with the evolution of SASI into SCSI.
Shugart Associates published SASI in 1981 and took it to ANSI in 1982 where
they renamed it SCSI to avoid using a
WD acquired the Tandon drive business in 1988 so it was both a drive maker
and a chip supplier to other drive makers.
WD used the term "Integrated Drive Electronics" internally as early as June
23, 1985 on proprietary business plans (I have copies) but the target
"Intelligent Drive" interfaces are
On 10/5/17 5:53 AM, Christian Corti via cctalk wrote:
On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote:
Also, the early desktop PS/2 (model 50 and such) had the controller
integrated on the drive and those were Maxtor as I recall. The PS/2
shipped in 1987 and we had the drives in labs at least 12-
From: Chuck Guzis
Sent: Wednesday, October 04, 2017 1:46 PM
> As an aside, I picked up a 1986 Wren II full-height manual that discussed the
> drive and its various interfaces. Sadly, IDE isn't one, but SCSI is referred
> to as "SASI Subset"; i.e. "SCSI (SASI subset)"
I believe that you're readin
On 10/05/2017 11:39 AM, Rich Alderson via cctalk wrote:
> From: Chuck Guzis
> Sent: Wednesday, October 04, 2017 1:46 PM
>
>> As an aside, I picked up a 1986 Wren II full-height manual that discussed the
>> drive and its various interfaces. Sadly, IDE isn't one, but SCSI is referred
>> to as "SASI
On 10/5/2017 8:53 AM, Al Kossow via cctalk wrote:
On 9/29/17 8:56 AM, Henk Gooijen via cctalk wrote:
Now I'm looking for 8" mag tapes/reels that will fit!
http://www.ebay.com/itm/311973810676
even a good brand.
2400' as said 10" reels for that auction.
1200' 8"
600' 6"
The Kennedy 9800 i
On 10/05/2017 04:22 AM, allison via cctalk wrote:
> Funny the market knew of the 386 in the fall of '85 but it would be
> three years before I'd see
> one in the field. Disks and CPUs lagged the introductions by years due
> to cost.
It was hard to rationalize the extra cost of a 16MHz 80386 whe
> > That concurs with my observation that SCSI was initially an Apple
> > convention.
> > I can recall conversations about SASI vs. Apple SCSI.
>
> And like Fred, I don't believe that it does any such thing.
>
>Rich
Me too. Given ho
On 10/05/2017 12:36 PM, jim stephens via cctalk wrote:
> The Kennedy 9800 is an oddball with 1200' reels, and a smaller panel
> footprint.
Kennedy made some incremental tape drives for key-to-tape systems with
8" reel capacity. The advantage, of course, is the smaller
footprint--and key-to-tape
On 10/5/2017 11:50 AM, Chuck Guzis via cctalk wrote:
On 10/05/2017 11:18 AM, Tom Gardner via cctalk wrote:
I suspect this might start another discussion, but as I understand it Apple had
little to do with the evolution of SASI into SCSI.
Shugart Associates published SASI in 1981 and took it t
On 2017-10-05 4:31 PM, Chuck Guzis via cctalk wrote:
On 10/05/2017 11:39 AM, Rich Alderson via cctalk wrote:
From: Chuck Guzis
Sent: Wednesday, October 04, 2017 1:46 PM
As an aside, I picked up a 1986 Wren II full-height manual that discussed the
drive and its various interfaces. Sadly, IDE
On 2017-10-05 4:45 PM, Peter Coghlan via cctalk wrote:
That concurs with my observation that SCSI was initially an Apple convention.
I can recall conversations about SASI vs. Apple SCSI.
And like Fred, I don't believe that it does any such thing.
On 2017-10-05 8:22 AM, allison via cctalk wrote:
On 10/5/17 5:53 AM, Christian Corti via cctalk wrote:
On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote:
Also, the early desktop PS/2 (model 50 and such) had the controller
integrated on the drive and those were Maxtor as I recall. The PS/2
shippe
On 10/05/2017 01:27 PM, Paul Berger via cctalk wrote:
> I once had a Tecmar SASI adapter (I still have the documentation
> and diskette) I seem to recall that it was mostly buffers which
> would suggest that most of the work was done by the device driver.
> The disks that went with it where ST50
Hello to Everyone that replied to my post on the HP7970 Tape Drive.
I very much appreciate the advice and counsel.
Sorry for the delay responding, I had a medical procedure that
knocked me back a bit - nothing serious, just mostly irritating (the
ENT Doc injected 25ml of a liquid steroid di
Chuck -
Great information!
E.g., connectors from Anchor Electronics/San Diego - I have been
wondering about primordial connectors.
I appreciate the description of your STM32F407 machine - makes sense
and gives me hope that I can replicate the functionality in the 68K world.
I do have a d
The biggest problem you had was the requirement to assert ATN when
selected properly. Later the tag queuing caused huge headaches as
manufacturers implemented that feature.
It eventually was made mandatory for the most part by linux, and perhaps
Windows requiring the tag queuing drilled
Marc -
I certainly do know you from your great YouTube videos.
Because of the video on the Overland Data drive, I bought one of
those that popped up on eBay, but it will not find load point.
The output voltages from the BOT sensor look, I think, good or at
least reasonable: +0.3VDC for th
Hi Jack,
I believe finding the load point and bottom-of-tape has to do with
photosensors that pick up reflected light from a lamp/photo detector
assembly in the tape path. Are you sure the lamps are working? After that
you'd look for the reflective sticker on the tape then perhaps scope the
photo
The DK Driver for VMS versions around 5.x definitely had a problem with non-DEC
disks. 6.X and greater were slightly more forgiving.
The specifics are summarized in a note from Ralph Weber in
https://groups.google.com/forum/#!search/SCSI$20Mode$20Page$20Requirements$20$20axp/comp.os.vms/RAaUpP_
On 10/05/2017 01:50 PM, Chuck Guzis via cctalk wrote:
What I found curious was the CDC manual that called SCSI "SASI subset".
To me that says that SASI was the more elaborate protocol and SCSI
initially picked and chose from it.
Oh, no! SASI was VERY simple. You could read and write a
numb
On 10/05/2017 03:27 PM, Paul Berger via cctalk wrote:
I once had a Tecmar SASI adapter (I still have the
documentation and diskette) I seem to recall that it was
mostly buffers which would suggest that most of the work
was done by the device driver. The disks that went with it
where ST506
I’m not sure if Aaron’s website was offline prior to the last couple days or
not, as I honestly don’t remember the last time that I visited, but it’s
offline now. Aaron once upon a time, used to work for what was a really great
ISP, aracnet.com, and that’s apparently where his website was still
From: "Zane Healy via cctalk"
Sent: Thursday, October 05, 2017 9:09 PM
I’m not sure if Aaron’s website was offline prior to the last couple days or
not, as I honestly don’t remember the last time that I visited, but it’s
offline now. Aaron once upon a time, used to work for what was a really g
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