I used to work on a 360/20 starting around 1971.  We had the basic model - 4K of 
memory, no disk, no console.  Just a MFCM reader/punch and a 300 LPM printer.  There 
were several utility programs on card decks - sort, gang punch repro, and a report 
generator, plus the RPG compiler.  I especially liked sorting.  We had some little 
decks of cards, less than an inch, that had to be sorted on about 15 columns.  It was 
faster than sorting them on the sorter, even thought the sorter ran over 3 times as 
fast.  

We upgraded that machine to 8K of storage, and put on some other hardware and made it 
into a remote RJE.  We ran the jobs throught the card reader, and then printed the 
reports.  I remember one series of jobs that ran almost 24 hours on our 1410 computers 
ran about 1 hour on the 370 machine we dialed in to.

Eric Bielefeld
Sr. MVS Systems Programmer
P&H Mining Equipment
Milwaukee, WI
414-671-7849
[EMAIL PROTECTED]

>>> [EMAIL PROTECTED] 02/18/03 01:01AM >>>
On Mon, 17 Feb 2003 23:23:45 +0100, Phil Payne
<[EMAIL PROTECTED]> wrote:

>> we have a 360/20 at the (little) computer museum at our site,
>> and on the control panel it has four wheels with hex digits on it where you
>> could enter an address and two wheels for the byte value, and so you could
>> change storage contents from the control panel. So I'm sure the address size
>> was 16 bits. I never worked with it (I'm too young, only 44 years).
>
>Oh, there's absolutely no doubt that the 360/20 was a 16-bit machine.
>
>The debate is whether it really was a /360.

In the common meaning, it certainly wasn't. To a large extent programs
written for one 360 and operating system would operate on other 360
models. That was the prime invention and genius. Since that wasn't
true for a /20, it couldn't possibly be a 360. 

But of course it was sold and labeled as a 360, so it was.

A paradox.

john


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