And IBM assembler (Sent from iPhone, so please accept my apologies in advance for any spelling or grammatical errors.) > On Jul 8, 2014, at 4:36 PM, Always Learning <centos at u62.u22.net> wrote: > > >> On Tue, 2014-07-08 at 17:10 -0400, Robert Moskowitz wrote: >> >> The read up on Grace Hopper and how she 'discovered' an unknown opcode >> when a mispunch she glued in with nail polish. They used hand punchers >> a lot on her programming team. > > Not entirely unknown because the opcode must have been known to the > technicians or computer designers but not actually documented for the > programmers. > > 40 used to be NOP (no op) on Honeywells H-200 series. > > > > -- > Regards, > > Paul. > England, EU. > > Centos, Exim, Apache, Libre Office. > Linux is the future. Micro$oft is the past. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos