Your sample assembled fine but abended 0C1. I made some minor mods.
Hope you don't mind my pretend German in the comments :)
The biggest problem is trying to use R15 as a base. That gets messed up
by OPEN. The other problem is LA instead of L when loading R13 for the
return. I mix those up a lot myself.
https://www.mildredbrennan.com/mvs/hello.png
P.S. My wife and I were in München last May. Beautiful city and it was
fun trying to understand the language based on a high-school class.
On 9/5/2023 6:19 PM, Bernd Oppolzer wrote:
FWIW:
ChatGPT could have used this ASSEMBLER program, which I posted some
years ago
to German Wikpedia ... this does not do the addition of two integers,
but instead it
is a simple Hello World program. In contrast to the program provided by
ChatGPT,
it has no errors (I hope) and it will work.
https://de.wikipedia.org/wiki/Liste_von_Hallo-Welt-Programmen/Assembler#IBM-Mainframe-ASSEMBLER
Kind regards
Bernd
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