[Default] On 4 Sep 2020 03:50:04 -0700, in bit.listserv.ibm-main
greg.pr...@optusnet.com.au (Greg Price) wrote:
>Hi - regarding several points in this thread...
>
>What I think I know:
>
>MVS 3.8 had:
>- MF/1 (component prefix IRB) writing the SMF type 7n records
>- physical swapping only
>- sequential SMF data sets ("TCLOSE" anyone?)
>
>SE1 and SE2 were free (as in zero dollars) but licensed.
>
>MVS/SE2 had
>- RMF (component prefix ERB) writing the SMF type 7n records
>- physical and logical (at least for swap types TI and TO)
>- VSAM SMF data sets (flagged by the high-order (or sign bit) of CVTSMCA
>being set)
>
>Does anyone know if any of those things were delivered in SE1 (which I
>never saw AFAIK)?
>
>Where I worked ran a 370/158 MP (6MB real) on MVS/SE2 3.8H (1983?)
>- they also got an Amdahl V7B->V7A->V7->V8 ("got all cylinders firing")
>
>I was very surprised when MVS/SP 1.2 ran on the 158 because I would have
>thought that DAS required extra hardware that was not thought of when
>the 158 was first designed and built.
>
>When I heard of the 4300 series, I heard of:
>4331 - lower end
>4341 - a bit more "oompf"
It could and did run MVT rel. 21.8. We did it at my shop with phone
advice from Rick Steffee (sp.) pf Naval Intelligence, Brian Scott of
Volume Shoe and Paul Dalman from Army Records.
>both came in Group I or Group II - don't know what the difference was.
>
>A 4331 could not run MVS.
>
>The 4300 series were geared toward the VM/VSE crowd.
>
>Was there a 4361 ?
Yes, it was an follow-on to the 4331.
Clark Morris
>
>In 1987 I worked on an MVS/XA system (SP2.1 -> SP2.2) on a 4381.
>
>
>I'd welcome any corrections to - or even confirmations of - any of the
>above factoids.
>
>
>And also...
>
>Is not one of the main points of an ALS is that the the BCP (et al)
>coders can assume that the newer instructions in place at that level can
>be freely used within the object code of their components?
>
>Cheers,
>Greg P.
>
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