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Programming > Assembly 370 > Re: Mainframe n...
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Re: Mainframe near history (IBM 3380 and 3880 docs)

by Joe Morris <jcmorris@[EMAIL PROTECTED] > May 8, 2006 at 12:22 PM

"Chuck Stevens" <charles.stevens@[EMAIL PROTECTED]
> writes:

>"Anne & Lynn Wheeler" <lynn@[EMAIL PROTECTED]
> wrote:

>> the sounds of 2321 at boot/ipl was something like whirl, kerchunk, 
>> kerchunk, whirl, .... as it went thru reading volsers.

>                               [...]  When a given strip was desired, two

>sets of fingers came down and pulled the ones on either side of it away, 
>leaving the selected strip sticking up.  The read/write drum had a pair
of 
>fingers on its outer surface, and it was rotated such that the fingers
came 
>down and grabbed the strip.  Then the drum reversed direction and spun
for 
>the read/write process.  When reading and writing was done, the drum
simply 
>stopped and reversed direction with the idea that it would throw the
strip 
>back into the same slot whence it came.  Sometimes it actually worked. 
When 
>it did, the fingers on the drum released the strip and were retracted
back 
>into the surface of the read/write drum.

Thus the nickname for the 2321 of "noodle picker".

>When it didn't work, the strip, with your precious data on it, was almost

>always as neatly pleated as one could hope for.   There's a good
possibility 
>that some of the fingers got bent in this process as well, because the 
>pleating resulted from the strip landing on the selection fingers instead
of 
>in the hole the selection fingers were trying to maintain.

Thus the nickname for the 2321 of "noodle stuffer".

Joe Morris
 




 8 Posts in Topic:
Re: Mainframe near history (IBM 3380 and 3880 docs)
mauzbiz@[EMAIL PROTECTED]  2006-05-04 15:26:26 
Re: Mainframe near history (IBM 3380 and 3880 docs)
"Chuck Stevens"  2006-05-04 16:01:20 
Re: Mainframe near history (IBM 3380 and 3880 docs)
Steve Myers <smyers@[E  2006-05-04 19:35:49 
Re: Mainframe near history (IBM 3380 and 3880 docs)
Anne & Lynn Wheeler &  2006-05-04 20:07:35 
Re: Mainframe near history (IBM 3380 and 3880 docs)
"Chuck Stevens"  2006-05-05 07:43:11 
Re: Mainframe near history (IBM 3380 and 3880 docs)
Joe Morris <jcmorris@[  2006-05-08 12:22:29 
Re: Mainframe near history (IBM 3380 and 3880 docs)
"Bill Ogden" &l  2006-05-05 11:13:08 
Re: Mainframe near history (IBM 3380 and 3880 docs)
"Robert Harrison&quo  2006-05-06 01:46:10 

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