The MI is an object oriented language at a high level than Pascal P-code. I 
don't know how it compares to JVM byte code. The key feature is that you can 
only call a program object and that the objects are black box.

You might want to read up on capability based machines and browse the manuals 
at http://bitsavers.org/pdf/ibm/system38/ and 
http://bitsavers.org/pdf/ibm/as400/.


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

________________________________________
From: IBM Mainframe Discussion List [[email protected]] on behalf of 
Paul Gorlinsky [[email protected]]
Sent: Friday, November 25, 2022 11:12 AM
To: [email protected]
Subject: Re: Storage protection keys

Would you consider that the applications were more like P-Code ( pseudo-code ) 
... not that much different in principle to JAVA today ?

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