I have some things in BM format, but my priority is sources available online in 
a format that other editors can read. I'd especially like online copies of the 
announcement letters, which I can't find at botsavers.

VM/[B]SE and [B]SEPP are common abbreviations for VM [Basic] Systems Extension 
Progeam Product, which install over VM/370.

VM and the VM Community: Past, Present, and Future, presented by Melinda Varian 
at SHARE 89, Sessions 9059-9061, August 1997,  says "1979 brought us VM/370 
Release 6 and Release 2 of BSEPP and SEPP, with logical device support, the EDF 
file system, 128 and the first of many very disappointing implementations of 
CMS HELP." That matches my recollection; I ran into an incompatabily in the GTE 
3277 clone, which did not update the buffer address after a RA order; the 
updated SEPP login code, quite properly, relied on the updated address, and it 
was only by tracing a second level virtual machine that I was able to diagnose 
(spitting nails) the problem.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List [[email protected]] on behalf of 
Alan Altmark [[email protected]]
Sent: Thursday, May 13, 2021 5:07 PM
To: [email protected]
Subject: Re: When did CMS stop requiring S/370 mode?

On Wed, 12 May 2021 08:18:36 +0000, Seymour J Metz <[email protected]> wrote:

><http://secure-web.cisco.com/129OMVqU6tz0moqx0drT_bMrsgrYR-nBQAef-XTiMBQUMQx6gGmoTenE8zbT11Zj7VRhi6UaclS24REzddP5hLRJ89eEjg0UOaVu3yMgWJpymWIpuUj_dq_1q6OXOzm7vSMiIj4T1tjLNIfedNCWgVmadWfLSU74g1SM-jpmSGRTNbSDw48wS0fjOIRnfMNtDCTbUYsZuxsDX-VKqjEaPj2003kcTfPHnxU4TzJe_oa_I0jKxvx4q1caz1eW9Eovw_oHjWKcF-xvmT1a7yTmvsEcN1vtHpgGYdVNpyv-sZyuGb66DbArrJj3lX4xl9NQ2aQzH67a4ilGxOQLPifHTwSlPqDpsKflYQVNPRzVLy95lydQvUtPkTdnrzhxrTMNxpc5aZV8kY3y5LHyrDarDzlEwzBb3tC89hsh33boowSHSWwDlmidUQTnN9WEJb1uX/http%3A%2F%2Fbitsavers.org%2Fpdf%2Fibm%2F370%2FVM_370%2FRelease_6%2FGC20-1818-3_IBM_Virtual_Machine_Facility_370_CMS_Command_and_Macro_Reference_Rel_6_PLC_17_Apr81.pdf>
> doesn't list an option on the FORMAT command to select a new format file 
> system.

Yes, but the -2 level of the book has the TNLs in it.

>Are the VM/370, VM/SE, VM/BSE, VM/SP, VM/XA (MA, SF and SP) and VM/ESA 
>announcement letters and GI manuals
>available online?

I can find online announcements back to VM/SP Release 2 and back to VM/XA MA.   
Basically, anything prior to 1980 isn't there.  Several years ago there was a 
reprint of the VM/370 announcement, and my copy is on the wall outside my 
office in a building I haven't been in in over a year.

As far as manuals go, I think VM/SP R6 and VM/XA SP 2.1 were the first to have 
electronic copies (BookManager READ).  Those CDs are in my office, too.  :-)    
Somewhere in the office are also a couple of still-in-the-shrinkwrap CP-67 or 
VM/370 manuals.  (I *think* they're CP-67.)

I can find references to VM/BSE and VM/SE, but it appears to be shorthand for 
"VM/370 with BSEPP or SEPP".

If memory serves, I began with VM/370 PLC 3 or 4, then 6, then VM/SP R2 in 
college, but I wasn't aware of minor details like CDF vs. EDF.   I just 
formatted my disks using the defaults. After joining IBM, I remember arguments 
in the aisle over what to do about changing the default from CDF (800 bytes 
blocks) to EDF (1K or 4K).  I was just a young whippersnapper at the time and 
didn't involve myself in the deliberations of the Elders.

A lot of memory cells have become non-functional in that amount of time.  :-(

Alan Altmark
IBM

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