On Fri, Feb 23, 2018 at 10:23 AM, Jon Elson via cctalk <
cctalk@classiccmp.org> wrote:
> The original bubble memories were sort of dead end, but applying more
> advanced semiconductor lithography to them, going to vertical Bloch-line
> memory architecture, and such could have given them a lot more
On 02/22/2018 10:37 PM, Pete Lancashire via cctalk wrote:
This is all bringing back when Intel tried to see BM's to me at Tektronix.
Got to go see them being made. Something just told me "dead end".
The original bubble memories were sort of dead end, but
applying more advanced semiconductor l
> On Feb 23, 2018, at 07:11, Anders Nelson wrote:
>
> That's one of the most beautiful machines I've ever seen! Are they
> rare/expensive? (I'm guessing yes)
Yes to both! I don't know how many are out in the wild today, and I don't know
how many were made. I don't even know yet whether they
That's one of the most beautiful machines I've ever seen! Are they
rare/expensive? (I'm guessing yes)
=]
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Thu, Feb 22, 2018 at 3:08 PM, Mark J. Blair via cctalk <
cctalk@classiccmp.org> wrote:
> I'm about to acquire a couple of 1980s-vintag
ope was the
> Intel one.
>
> Dwight
>
>
>
> From: cctalk on behalf of allison via
> cctalk
> Sent: Thursday, February 22, 2018 3:14:45 PM
> To: cctalk@classiccmp.org
> Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
&g
Looking things up, I don't think the Nicolet one with the scope was the Intel
one.
Dwight
From: cctalk on behalf of allison via cctalk
Sent: Thursday, February 22, 2018 3:14:45 PM
To: cctalk@classiccmp.org
Subject: Re: WTB Intel 7110 Bubble Memory Subs
On 02/22/2018 03:08 PM, Mark J. Blair via cctalk wrote:
> I'm about to acquire a couple of 1980s-vintage military surplus AN/UGC-137A
> terminals (i.e., glass TTYs with some local message preparation and storage
> capabilities) which have a bubble memory subsystem. They use plug-in
> cartridges
On Thu, Feb 22, 2018 at 3:39 PM, Mark J. Blair via cctalk <
cctalk@classiccmp.org> wrote:
>
> I've seen those instructions. As I understand it, I may need to do that to
> restore a module to operation if it's lost its seed. But if that has
> happened to either of the two modules in my firmware car
> On Feb 22, 2018, at 2:33 PM, Eric Smith via cctalk
> wrote:
>
> If you do lose the formatting of an Intel 7110 bubble memory device, to
> reformat it you need something Intel called a "seed module". The
> instructions to build a seed module are in the BPK72 manual.
I've seen those instructi
If you do lose the formatting of an Intel 7110 bubble memory device, to
reformat it you need something Intel called a "seed module". The
instructions to build a seed module are in the BPK72 manual.
On Thu, Feb 22, 2018 at 2:28 PM, Mark J. Blair via cctalk <
cctalk@classiccmp.org> wrote:
> Is my understanding correct that removing the entire 7110 module as a unit
> (whether socketed or soldered in) should be somewhat safe, but any attempt
> to disassemble the module would likely disturb the b
On Thu, Feb 22, 2018 at 2:23 PM, dwight via cctalk
wrote:
> Do not remove the chip from the bias magnets. All will be lost if you do.
>
That's true, but AFAIK all commercially produced bubble memory devices,
including Intel (7110 1Mbit, 7114 4Mbit) and TI, the bias magnets are
integral to the pa
It's easy to design an emulator at the level of the D7220 host interface.
It is _difficult_ to design an emulator at the interface between the D7220
controller and the 7242 Formatter/Sense Amplifier, because the 7242 is a
tricky little beastie, and while the interface is somewhat documented, the
d
.
Dwight
From: cctalk on behalf of Mark J. Blair via
cctalk
Sent: Thursday, February 22, 2018 1:28:52 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
> On Feb 22, 2018, at 1:23 PM, dwi
> On Feb 22, 2018, at 1:23 PM, dwight via cctalk wrote:
>
> Do not remove the chip from the bias magnets. All will be lost if you do.
Is my understanding correct that removing the entire 7110 module as a unit
(whether socketed or soldered in) should be somewhat safe, but any attempt to
disass
ruary 22, 2018 12:29:47 PM
To: Mark J. Blair; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
Doing a paper napkin design, should be pretty easy to build a bubble
emulator in the same size
On Thu, Feb 22, 2018 at 12:08 PM, Mark J. Blai
> On Feb 22, 2018, at 12:29 PM, Pete Lancashire wrote:
>
> Doing a paper napkin design, should be pretty easy to build a bubble emulator
> in the same size
Yes, and I plan to do just that (assuming I ever actually get around to it)!
But the first priority will be archiving the firmware that's
Doing a paper napkin design, should be pretty easy to build a bubble
emulator in the same size
On Thu, Feb 22, 2018 at 12:08 PM, Mark J. Blair via cctalk <
cctalk@classiccmp.org> wrote:
> I'm about to acquire a couple of 1980s-vintage military surplus
> AN/UGC-137A terminals (i.e., glass TTYs wit
I'm about to acquire a couple of 1980s-vintage military surplus AN/UGC-137A
terminals (i.e., glass TTYs with some local message preparation and storage
capabilities) which have a bubble memory subsystem. They use plug-in cartridges
containing 256 kbytes of storage in the form of two Intel 7110 1
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