On 11/21/2016 04:17 PM, Charles Anthony wrote:
I was looking here:
http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/
fe/2020/Z33-1021-0_2020_Processing_Unit_FETOM_May68.pdf
(pdf) pages 45, 46 describe the ALU
I note that the cover page says: "(Machines with serial no. 50,000 and
abov
On 11/21/2016 12:28 PM, Charles Dickman wrote:
I was looking here:
http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/fe/2020/Z33-1021-0_2020_Processing_Unit_FETOM_May68.pdf
(pdf) pages 45, 46 describe the ALU And here:
http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/fe/2020/SY33
http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/
fe/2020/Z33-1021-0_2020_Processing_Unit_FETOM_May68.pdf
(pdf) pages 45, 46 describe the ALU
On Mon, 21 Nov 2016, Charles Anthony wrote:
I note that the cover page says: "(Machines with serial no. 50,000 and
above)."
Perhaps the ALU is on
On 11/21/2016 2:17 PM, Charles Anthony wrote:
Perhaps the ALU is only present on late model machines?
-- Charles
If it were a GE645 strapped for running Multics, very possibly, and
undocumented. The builtin special purpose abacus was used on some early
models.
> I was looking here:
>
> http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/
> fe/2020/Z33-1021-0_2020_Processing_Unit_FETOM_May68.pdf
>
> (pdf) pages 45, 46 describe the ALU
>
>
I note that the cover page says: "(Machines with serial no. 50,000 and
above)."
Perhaps the ALU is only present
On Sun, Nov 20, 2016 at 7:29 PM, Jon Elson wrote:
> On 11/20/2016 05:30 PM, Charles Dickman wrote:
>>
>> On Fri, Nov 18, 2016 at 6:15 PM, Jon Elson wrote:
>>
>>> OH, yeah! Besides the limited instruction set, short registers only half
>>> populated, etc., did you know that the 360/20 did not hav
On 11/20/2016 05:30 PM, Charles Dickman wrote:
On Fri, Nov 18, 2016 at 6:15 PM, Jon Elson wrote:
OH, yeah! Besides the limited instruction set, short registers only half
populated, etc., did you know that the 360/20 did not have an adder?
This made me curious about how primitive it was, but
On Fri, Nov 18, 2016 at 6:15 PM, Jon Elson wrote:
> OH, yeah! Besides the limited instruction set, short registers only half
> populated, etc., did you know that the 360/20 did not have an adder?
This made me curious about how primitive it was, but the FE docs on
bitsavers show a 16bit ALU that
> > Old Computerworlds from the time had a lot of ads for timesharing
> > services.
>
> That was before everyone decided it was far cheaper and saner to own
> and administer their own systems.
> (ahem.)
I will say on the personal side, as someone who has run their
own do-everything server continu
On 11/20/2016 12:02 PM, Mark Linimon wrote:
> On Sun, Nov 20, 2016 at 07:52:20AM -0500, william degnan wrote:
>> Old Computerworlds from the time had a lot of ads for timesharing
>> services.
>
> That was before everyone decided it was far cheaper and saner to own
> and administer their own syst
On Sun, Nov 20, 2016 at 07:52:20AM -0500, william degnan wrote:
> Old Computerworlds from the time had a lot of ads for timesharing
> services.
That was before everyone decided it was far cheaper and saner to own
and administer their own systems.
(ahem.)
Mark "everything old is new again" Linimo
> From: Jon Elson
> if they were doing mostly RPG work, then a /20 could do that.
This is a _long_ time ago, and I was a junior operator, not a programmer, but
I know most (maybe all) of their work was in RPG.
Noel
On Nov 20, 2016 1:54 AM, "Chuck Guzis" wrote:
>
> On 11/19/2016 09:56 AM, william degnan wrote:
>
> > True, but for all that I have read about the actual use of the /20
> > that was not what it was for. IBM used the /20's as a smart terminal
> > and that kind of thing.The thing in between the
On 11/19/2016 09:56 AM, william degnan wrote:
> True, but for all that I have read about the actual use of the /20
> that was not what it was for. IBM used the /20's as a smart terminal
> and that kind of thing.The thing in between the mainframe and
> something else operating in a remote locat
On Sat, Nov 19, 2016 at 03:50:45PM -0500, Paul Koning wrote:
> A pretty impressive combination of command and data chaining.
s/impressive/terrifying/
mcl
> On Nov 19, 2016, at 3:38 PM, Jon Elson wrote:
>
>> ...
> The /20 was very limited, and not a general purpose 360. There was also the
> 360/22 and 360/25 that were variants of the /30 model. One was cheaper, one
> was a little faster. But, if they were doing mostly RPG work, then a /20
>
On 11/19/2016 01:00 PM, Noel Chiappa wrote:
> From: William Degnan
> for all that I have read about the actual use of the /20 that was not
> what it was for. IBM used the /20's as a smart terminal and that kind
> of thing. The thing in between the mainframe and something else
> From: William Degnan
> for all that I have read about the actual use of the /20 that was not
> what it was for. IBM used the /20's as a smart terminal and that kind
> of thing. The thing in between the mainframe and something else
> operating in a remote location, and so on.
On Sat, Nov 19, 2016 at 12:49 PM, Jon Elson wrote:
> On 11/18/2016 10:17 PM, Chuck Guzis wrote:
>
>> On 11/18/2016 07:59 PM, Jon Elson wrote:
>>
>> Yes, I think it had to, as it had no adder. Had to be
>>> incomprehensibly slow. I guess it would load the memory to an
>>> internal register a pie
On 11/18/2016 10:17 PM, Chuck Guzis wrote:
On 11/18/2016 07:59 PM, Jon Elson wrote:
Yes, I think it had to, as it had no adder. Had to be
incomprehensibly slow. I guess it would load the memory to an
internal register a piece at a time.
The last time I dug around a bit for model 20 software,
> From: Chuck Guzis
> On 11/18/2016 10:00 AM, william degnan wrote:
>> Hot business women posing with classic UNIVAC hardware
> Models?
Yup. Definitely too hot to be business-women!
(Hope Chuck doesn't mind being quoted out of context, but it was just too good
to let pass...
On 11/18/2016 07:59 PM, Jon Elson wrote:
> Yes, I think it had to, as it had no adder. Had to be
> incomprehensibly slow. I guess it would load the memory to an
> internal register a piece at a time.
The last time I dug around a bit for model 20 software, I was surprised
to find that there was
On 11/18/2016 06:04 PM, Chuck Guzis wrote:
On 11/18/2016 03:15 PM, Jon Elson wrote:
OH, yeah! Besides the limited instruction set, short registers only
half populated, etc., did you know that the 360/20 did not have an
adder? It could only increment/decrement. The data paths were only
4 bits
On 11/18/2016 03:15 PM, Jon Elson wrote:
> OH, yeah! Besides the limited instruction set, short registers only
> half populated, etc., did you know that the 360/20 did not have an
> adder? It could only increment/decrement. The data paths were only
> 4 bits wide, so to add a 3 in register A t
On 11/18/2016 02:04 PM, Chuck Guzis wrote:
Models? Wasn't the 9300 basically an
instruction-compatible model of the S/360 Model 20? I
think the 9400 was the bottom end 360/30 model compatible.
Calling the Model 20 a "member of the System 360 line" has
always been a bit of a stretch in my book.
On Fri, Nov 18, 2016 at 3:09 PM, william degnan
wrote:
>
>
> On Fri, Nov 18, 2016 at 3:04 PM, Chuck Guzis wrote:
>
>> On 11/18/2016 10:00 AM, william degnan wrote:
>> > http://vintagecomputer.net/browse_thread.cfm?id=658
>> >
>> > Hot business women posing with classic UNIVAC hardware and a link
On Fri, Nov 18, 2016 at 3:04 PM, Chuck Guzis wrote:
> On 11/18/2016 10:00 AM, william degnan wrote:
> > http://vintagecomputer.net/browse_thread.cfm?id=658
> >
> > Hot business women posing with classic UNIVAC hardware and a link to
> > a very rare 1968 business proposal by UNIVAC to Philip Morri
On 11/18/2016 10:00 AM, william degnan wrote:
> http://vintagecomputer.net/browse_thread.cfm?id=658
>
> Hot business women posing with classic UNIVAC hardware and a link to
> a very rare 1968 business proposal by UNIVAC to Philip Morris, an
> attempt to sell either a 418-III or 9400, pricing, comp
http://vintagecomputer.net/browse_thread.cfm?id=658
Hot business women posing with classic UNIVAC hardware and a link to a very
rare 1968 business proposal by UNIVAC to Philip Morris, an attempt to sell
either a 418-III or 9400, pricing, comparison with IBM 360 models.
Included with the proposal w
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