> On Nov 14, 2017, at 10:57 PM, Ed Sharpe via cctalk
> wrote:
>
> you have me real curious,as to what is in that padded hp case..
What are you referring to?
--
Mark J. Blair, NF6X
http://www.nf6x.net/
On Tue, 14 Nov 2017, Mark J. Blair via cctalk wrote:
No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive
has no capacity, this is the function of the on-disk format.
;-)
Christian
> On Nov 14, 2017, at 10:58 PM, Jon Elson via cctalk
> wrote:
>
> On 11/14/2017 11:20 AM, Chuck Guzis via cctalk wrote:
>> It's always struck me how revolutionary (for IBM) the change in
>> architecture from the 700x to the S/360 was. The 709x will probably
>> strike the average reader of tod
> From: Ben Franchuk
> Multics never really made it out of the lab.
This 'bogo-meme' (to use a word I coined) is, well, totally flat wrong.
Multics was a reasonably successful product for Honeywell from the end of
1972 (when the H6180 was introduced) to around 1987 (when they stopped
sel
Why not just measure the voltage across the resistor. That will tell you the
amount of current flowing.
Dwight
From: cctalk on behalf of Brent Hilpert via
cctalk
Sent: Tuesday, November 14, 2017 6:29:47 PM
To: General Discussion: On-Topic and Off-Topic Posts
> On Nov 15, 2017, at 01:31, Christian Corti via cctalk
> wrote:
>
> No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive has
> no capacity, this is the function of the on-disk format.
> ;-)
Ah! That's technically correct, which is, of course, the best kind of correct.
W
FYI - I checked related to the HP 85 IEEE port I have an Microcomputer
Systems Corporation MSE 9800 and an HP 9122S
b
On Wed, Nov 15, 2017 at 11:31 AM, Mark J. Blair via cctalk <
cctalk@classiccmp.org> wrote:
>
> > On Nov 15, 2017, at 01:31, Christian Corti via cctalk <
> cctalk@classiccmp.org> w
Denver area, pickup only ...
Anybody?
On 2017-11-15 12:40 AM, Mark J. Blair via cctalk wrote:
On Nov 14, 2017, at 20:33, Ed Sharpe via cctalk wrote:
ok back in my day.. I do not think 85 adressed modern drive of 1.44 meg..? so
that was what I was going on.. yes if you can use 1.44 do so.. older new media
hard to find...
I am s
720K media is pretty easy to get as well, I bought 100 "used" disks from
floppydisk.com, and it is hard to tell they have ever been used and I
have not had any problems with them. I also bought a lot on eBay that
where previously used on an Amiga that majority of them where OK and the
where a
> On Nov 15, 2017, at 09:33, Paul Berger via cctalk
> wrote:
>
> 720K media is pretty easy to get as well, I bought 100 "used" disks from
> floppydisk.com, and it is hard to tell they have ever been used and I have
> not had any problems with them. I also bought a lot on eBay that where
> p
No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive has
no capacity, this is the function of the on-disk format.
;-)
"high-density" is even more
On 2017-11-15 1:44 PM, Fred Cisin via cctalk wrote:
No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
No, the 9122C has two high-density, two-sided 80 cylinder drives. A
drive has no capacity, this is the function of
> On Nov 15, 2017, at 09:44, Fred Cisin via cctalk
> wrote:
>
>>> No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
> On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
>> No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive
>> has no capacity, thi
Note that there were always some exceptions.
Weltec made a 5.25" drive at 180 RPM, to do "HIGH DENSITY"/"1.2M" at
250,000 bits per second on PC/XT.
Sony made some 3.5" drives that were 600 RPM, to use 500,000 bits per
second.
NEC used 360 RPM 3.5" drives, to have the same format structure on
No, the 9122C model has two 1.44M drives. HP made several earlier 3.5"
On Wed, 15 Nov 2017, Christian Corti via cctalk wrote:
No, the 9122C has two high-density, two-sided 80 cylinder drives. A drive has
no capacity, this is the function of the on-disk format.
;-)
"high-density" is even more
On 11/15/2017 09:01 AM, Noel Chiappa via cctalk wrote:
but because of Honeywell's incompetence at the computer business.
(That incompetence eventually resulted in a decision - probably correct from
the _business_ point of view, given said incompetence - to get out of the
computer business.)
M
On 11/15/2017 10:17 AM, Jon Elson via cctalk wrote:
> MANY companies were quite bad at making a go of the computer business.
> Xerox is probably legendary, but GE and RCA were certainly also famous
> for this. Honeywell made a LOT of computers in various forms -
> aerospace, minicomputer, indust
On 11/15/17 11:13 AM, Chuck Guzis via cctalk wrote:
On 11/15/2017 10:17 AM, Jon Elson via cctalk wrote:
MANY companies were quite bad at making a go of the computer business.
Xerox is probably legendary, but GE and RCA were certainly also famous
for this. Honeywell made a LOT of computers in
On 11/15/2017 11:18 AM, Alan Perry via cctalk wrote:
> Burroughs
> UNIVAC
> NCR
> CDC
> Honeywell
Ah, so post-Snow White.
--Chuck
I have been working on a HP 2640B terminal. It was mostly about fixing the
"screen mold" problem and cleaning up the liquids that had been seeping out
from the screen down into the bottom.
The small coaxial wire that connects the 4.9152 MHz clock signal form the
power supply (never seen a crystal
Grumpy Ol' Fred wrote:
>Yes, 1968-1973 had time-sharing for personal computing, but not
"personal computers"
We tend to forget about earlier "personal" computers...machines that
were generally designed for one individual to be able to sit down and
use interactively. That isn't to say that said in
On Nov 15, 2017, at 11:44 AM, Fred Cisin via cctalk
wrote:
> "400K" generally means Macintosh single sided, not DEC Rainbow, etc
For once, the physical format disambiguates those two!
The Rainbow disks are in flexible envelopes (and ~1.75” greater diameter).
(Got many of each, couldn’t keep t
On 11/15/2017 11:59 AM, Rick Bensene via cctalk wrote:
> While the definition of the term "personal computer" varies depending
> on who is using the term, these machines, and others like them, were
> designed to be used at a much more personal level than the large-scale
> mainframe machines house
From: Rick Bensene
Sent: Wednesday, November 15, 2017 11:59 AM
Grumpy Ol' Fred wrote:
>> Yes, 1968-1973 had time-sharing for personal computing, but not "personal
>> computers"
> While the definition of the term "personal computer" varies depending on who
> is using the term, these machines, and
On 11/15/2017 11:59 AM, Rick Bensene via cctalk wrote:
> While the definition of the term "personal computer" varies depending
> on who is using the term, these machines, and others like them, were
> designed to be used at a much more personal level than the large-scale
> mainframe machines ho
I wrote:
>> While the definition of the term "personal computer" varies depending
>> on who is using the term, these machines, and others like them, were
>> designed to be used at a much more personal level than the
large-scale
>> mainframe machines housed in the glass-walled rooms where only
"
is there a dif between 40 a and 40 b with the firmware/loader/etc?
Ed#
In a message dated 11/15/2017 12:48:24 P.M. US Mountain Standard Tim,
cctalk@classiccmp.org writes:
I have been working on a HP 2640B terminal. It was mostly about fixing the
"screen mold" problem and cleanin
It'd be interesting to find out how well that PRM-85 works. I've laid out a
board for a rough equivalent but I haven't fabbed it out. It may be cheaper
for me to buy that instead.
I've also got a 9122C but I don't have the mass storage ROM so I can't use
it with my 85. Right now I'm using it with
On 11/15/2017 02:39 PM, Rick Bensene via cctalk wrote:
> Perhaps the glass-room meme isn't so much bogus, as it is a sign of
> the cultural times. In those days, the big machines were very
> expensive, and required a lot of support -- that meant special
> power, air conditioning, raised floors,
> On Nov 15, 2017, at 8:06 PM, Chuck Guzis via cctalk
> wrote:
>
> On 11/15/2017 02:39 PM, Rick Bensene via cctalk wrote:
>
>> Perhaps the glass-room meme isn't so much bogus, as it is a sign of
>> the cultural times. In those days, the big machines were very
>> expensive, and required a lo
> On Nov 15, 2017, at 4:45 PM, Eric Schlaepfer wrote:
>
> It'd be interesting to find out how well that PRM-85 works. I've laid out a
> board for a rough equivalent but I haven't fabbed it out. It may be cheaper
> for me to buy that instead.
>
> I've also got a 9122C but I don't have the mass
> On Nov 15, 2017, at 5:09 PM, Paul Koning via cctalk
> wrote:
>
>
> Earlier, there was the SAGE computer (the air defense one, not the PC by the
> same name), which had built-in ash trays at each operator station.
With all of the possibly apocryphal stories of computer users mistaking CD
d
On 11/15/2017 01:13 PM, Chuck Guzis via cctalk wrote:
On 11/15/2017 10:17 AM, Jon Elson via cctalk wrote:
MANY companies were quite bad at making a go of the computer business.
Xerox is probably legendary, but GE and RCA were certainly also famous
for this. Honeywell made a LOT of computers in
On 11/15/2017 02:12 PM, Chuck Guzis via cctalk wrote:
On 11/15/2017 11:59 AM, Rick Bensene via cctalk wrote:
While the definition of the term "personal computer" varies depending
on who is using the term, these machines, and others like them, were
designed to be used at a much more personal le
I'm not sure where one might normally expect to discuss research
operating systems from the 1980s and 90s, but since it ran on Sun-2
through Sun-4 and DECstations, I'll start here.
I have the Sprite disk image for the DECstation 5000/200 running under
GXemul (see https://github.com/OSPreservProjec
On 11/15/2017 07:09 PM, Paul Koning via cctalk wrote:
Earlier, there was the SAGE computer (the air defense one,
not the PC by the same name), which had built-in ash trays
at each operator station.
Ash trays?? HA, they had auto-style CIGARETTE LIGHTERS
BUILT INTO the "radar screen" consoles!
On 2017-11-15 10:07 PM, Jon Elson via cctalk wrote:
On 11/15/2017 07:09 PM, Paul Koning via cctalk wrote:
Earlier, there was the SAGE computer (the air defense one, not the PC
by the same name), which had built-in ash trays at each operator
station.
Ash trays?? HA, they had auto-style CIGA
On 11/15/2017 09:13 PM, Paul Berger via cctalk wrote:
On 2017-11-15 10:07 PM, Jon Elson via cctalk wrote:
On 11/15/2017 07:09 PM, Paul Koning via cctalk wrote:
Earlier, there was the SAGE computer (the air defense
one, not the PC by the same name), which had built-in
ash trays at each oper
On Wed, 11/15/17, Jon Elson via cctalk wrote:
> PDP-5 and LINC certainly fit that requirement.
Funny the LINC should come up tonight. Earlier this evening
I went to a talk given by Mary Allen Wilkes who was the
developer of the system software for the LINC. She had one
in her parents' house a
> I think that the upgraded B model ROMs in the PRM-85 are supposed to let it
> use the newer drives.
Yes it does. I have an HP 85A, the PRM 85 and a 9122, and that combo works
beautifully. I am not sure I ever tried it with high density diskettes though.
I could check that if you want.
Marc
O
The ebay seller of this IBM 360/40 front panel asked me if I could put a link
on the list. So here it is:
https://www.ebay.com/itm/IBM-360-model-40-mainframe-CPU-Operator-panel/152780991916
Disclaimer: I am not affiliated with the seller other than he has contacted me
after seeing one of my own v
> On Nov 15, 2017, at 8:27 PM, Curious Marc wrote:
>
>> I think that the upgraded B model ROMs in the PRM-85 are supposed to let it
>> use the newer drives.
> Yes it does. I have an HP 85A, the PRM 85 and a 9122, and that combo works
> beautifully. I am not sure I ever tried it with high dens
> On Nov 15, 2017, at 1:00 PM, cctech-requ...@classiccmp.org wrote:
>
> --
>
> Message: 4
> Date: Tue, 14 Nov 2017 15:56:31 -0800
> From: "Mark J. Blair"
> To: "General Discussion: On-Topic and Off-Topic Posts"
>
> Subject: WTB: HP-85 16k RAM Module and HPIB F
Chuck Guzis wrote:
> Food and drink around the machines was also a definite no-no. Not just
> to prevent contamination (e.g. dumping your Coke into the keyboard of
> the operator's console)
Coke bottles caught near the DEC-10s MIT-MC and KATIA:
http://donhopkins.com/home/catalog/images/mc-consol
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