I believe there also was a hardware assist for the 4341. I think that the 4381
had it. 

I have some recollection about the 370/168 but it may have been supported by
the PROGFLIH. I remember that SP1.3 was as slow as molasses on the test system
at Western Electric.



On Sun, 3 Jan 2021 17:14:18 -0500 WILLIAM H BLAIR <[email protected]>
wrote:

:>| Does  anybody remember the first models to support 
:>| Dual Address Space for MVS/SP Version 1? I'd like
:>| to add that to the wiki [[IBM System/370]] article. 
:>
:>In hardware, it was the 3033 (as well as the 3042 Attached Processor), as 
well as a hardware assist MES for the 3031. It was also, of course, also 
supported on the 3081 (and all processor models thereafter).If I remember 
correctly, this support was not offered for the 3032 in any form. 
:>
:>For additional information, refer to:
:> http://www.computinghistory.org.uk/downloads/8823
:>on page 114.
:>
:>In software, it was supported on any System/370. The ABENDs were intercepted 
by FLIH and the unsupported instructions and control registers emulated. 
:>
:>This worked on my 370/158 at the time (1980).

--
Binyamin Dissen <[email protected]>
http://www.dissensoftware.com

Director, Dissen Software, Bar & Grill - Israel


Should you use the mailblocks package and expect a response from me,
you should preauthorize the dissensoftware.com domain.

I very rarely bother responding to challenge/response systems,
especially those from irresponsible companies.

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