On 2013-04-13, at 15:51, John Gilmore wrote: > > If instruction INST is not available on some of the machines he must > support he can write a macro definition called INST that mimics its > behavior for use on these antediluvian machines, do very much the same > thing IBM does for millicoded instructions, albeit somewhat less > elegantly. > This presumes either that the product is distributed in source, or, if OCO, assembled with different options for each target machine, and correspondingly multiplies the testing requirements.
-- gil
