🚀 go-pugleaf

On Mon, 19 Dec 2005 23:14:46 GMT, robin <robin_v@bigpond.com> wrote:

> <adaworks@sbcglobal.net> wrote in message
> news:5QCpf.36782$q%.31246@newssvr12.news.prodigy.com...
>>
>> The IBM System 360, Model 20 was an entry level
>> machine intended for people transitioning from environments
>> such as the IBM 407 and 402 environments.  These were
>> sometimes called EAM (Electronic Accounting machines) and
>> they operated on punched cards with plug-board panels that
>> could be reconfigured to handle a wide variety of jobs.
>>
>> The Model 20 was largely incompatible with the rest of the IBM
>> 360 line.  Most of the progams were written in RPG.  The OS
>> was totally different from anything else in the 360 family and I
>> recall the version of that OS called BPS (Basic Programming
>> Support).
>>
>> While there were eventually compilers for COBOL and some level
>> of PL/I, few IBM customers used anything except RPG.   Most
>> customers were happy to simply transfer their EAM applications
>> to the Model 20.   Intial deployments of this system required a
>> continued dependency on punched cards.   Tape was available.
>> Over time the system did evolve to support a greater variety of
>> storage devices.
>>
>> Eventually, IBM introduced the System 36 and other machines that
>> were a complete departure from the 360 line and many of the Model
>> 20 users were able to migrate to those systems.   The next step was
>> the AS 400 line.  I don't think System 36 or AS 400 provided support
>> for PL/I, but the AS 400 became one of the best products IBM ever
>> produced for small business accounting systems.
>
> The AS/400 has IBM PL/I
Unless it changed this was a somewhat extended ANSI subset G compiler,
which I believe was done in Rochester and had nothing in common with the
St Theresa compiler
>
>> Richard Riehle
>
>
>