On 2015-01-21, at 08:37, David Cole wrote: > Correct me if I'm wrong (John Ehrman), > but I thought that IBM once upon a time, > way back when they started to create mnemonics longer than 5 characters... > > I thought they said > their new limit was going to be seven characters. > Well... "VSTRCZFS". > > [sigh] > How many collisions are there between z13 mnemonics and z/OS library macro names and HLASM instructions.
I think it was said here that if hardware design tried to name instructions such as POP, PUSH, WAIT, POST, ... HLASM would prevail with possible intercession of Marketing. But are new mnemonics vetted against all member names in all maclibs of all IBM products? (Do significant ISVs count?) Has Colesoft been using VSTRCZFS? If seven characters is enough for TSO user IDs, it ought to be enough for instruction mnemonics. What about 9? Would that require a redesign of HLASM? UNIX file names can easily be 9 and more, but BPAM wouldn't support them. -- gil
