Presumably OS/VS2 Release 3, the second release of MVS. The MVS releases of 
OS/VS2 ran from 2.0 to 3.8, with a bunch of optional selectable units ("By the 
pricking of my thumb, SU 7 this way comes.")


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

________________________________________
From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of 
David Spiegel [00000468385049d1-dmarc-requ...@listserv.ua.edu]
Sent: Friday, December 2, 2022 6:41 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Computers

Hi Leonard,
You said: "... That computer center had MVS 3.0 running in the mid
1970s. ..."
Is "MVS 3.0" a typo? (I do not recall ever hearing of MVS 3.0.)

Thanks and regards,
David

On 2022-12-02 02:15, Leonard D Woren wrote:
> Bill Hitefield wrote on 11/30/2022 10:39 AM:
>> In college we had an IBM 1130 in the computer lab. Those of us
>> working in the lab discovered an AM radio placed near the console
>> switches made odd noises when you ran Fortran programs and set the
>> radio to a specific "station". Further investigation revealed you
>> could change the tone of the noise by using the "e to the x" function
>> and varying the value of "x". Our goal in life then became to play
>> "Smoke on the Water" using that radio. The temp wasn't too great, but
>> you could recognize the main riff!
>>
>> Bill Hitefield
>> Dino-Software Corporation
>> 800.480.DINO
>> https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.dino-software.com%2F&data=05%7C01%7Csmetz3%40gmu.edu%7Cdee8b1d5fb404060d1ff08dad45a3d7e%7C9e857255df574c47a0c00546460380cb%7C0%7C0%7C638055781337271398%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5V1okCO5Sk%2BgqFt9zdA1nb32gMtrWUmTxIJQrHQmq8w%3D&reserved=0
>>
>>
>
> I don't remember it very well, but I think the same could be done to
> some extent on some 360 models.
>
> In the mid-1970s, a college friend had a job as an off-hours computer
> operator at RAND (amusingly, where that 1970 film was made).  He
> wrote, and a musical friend tuned, a program which played music on a
> 2400 series tape drive by writing various length blocks -- the shorter
> the repeated block, the higher the note.  I think one of their 2 songs
> was Puff the Magic Dragon.  It was just hilarious to hear recognizable
> music from a tape drive.  The program wore out tapes pretty quickly
> though because all those short blocks were tough on the tape.  One
> long channel program IIRC to keep the music from pausing when a
> different job was dispatched.
>
> Footnote:  That computer center had MVS 3.0 running in the mid 1970s.
> It was the first time that I saw MVS with lots of new stuff compared
> to MVT 21.  But no TSO -- they ran Wylbur.
>
>
> /Leonard
>
>
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