Re: Class Notes for a PL/I Course.

The course is primarily (it would appear) based on the Checkout compiler - although it does mention differences, here and there, to the Optimizing compiler. So there are going to be some differences between this and the F compiler that we have. Whether they are significant or not is going to depend on what you want to do with PL/1 on Hercules.
 

 For example, I'm interested in mixing Pl/1 modules with modules in other languages such as COBOL and Assembler, and none of the interlanguage communications facilities described in the course are applicable to the F compiler - they're just not there. So, for example, a PL/1 F program can't be used unmodified in environments where a MAIN procedure needs to be invoked with multiple parameters (e.g. an IMS transaction program), so I've developed my own quick and dirty Assembler interface routines to cope with this sort of thing.
 Even simply passing a simple linear reference to (say) a COBOL sub-program is fraught with issues when you use the F compiler.
 

 AFAIK the later compilers were program products, and therefore chargeable, so getting hold of versions to run on Hercules would presumably be out of the question.
 

 JJ