On 2017-05-12, at 16:53, Keven Hall wrote: > Regarding code like: >> BZ NOERROR (If RC==0.) >> DC X'00',C'You shouldn'ta done that.' > > I'd suggest documenting the error in source code rather than the instruction > cache (or using a 1-byte numeric error code. > Good point. So bunch them under a LOCTR far away and unlikely to contend with cache. 1-byte error codes and reporting errors by program check are a relic of antiquated storage constraints. Even decades ago, I remember a system from another vendor which had no error codes. Explanations appeared in the diagnostic manual arranged by message texts in alphabetical order. I suppose that paid too little attention to national languages. Nowadays for systems lacking message codes, GIYF.
-- gil