Re: QPRCRTPG and allowed op-codes

["Leif Svalgaard" <leif@xxxxxxxx>]

From: Njål Fisketjøn <n.f@figu.no>

Back in the S/38 days we had a MI "compiler" from a company
named SoftCommand. Does anyone here know what technique
(undocumented API?) they used to create MI programs.

===> that compiler was a 'fraud'. It was just a frontend to QPRCRTPG.


Is there any other way than QPRCRTPG to create MI programs,
and would it be possible to use all the available MI opcodes?

===> there are other ways (some were discussed here a few days
ago (QSCMATPG et al)

Would it be possible to write a MI compiler that used a pre-processor
to substitute all "illegal" op-codes by valid ones in such a way
that they used the same arguments, and then patched the compiled
program with the correct instruction hex codes before completing
the "compile task"?

===> short answer: yes




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