In <CAE1XxDH=2+e+p2ag55ykgtwlc+ttbptqvrzv8iunhoaxpzg...@mail.gmail.com>, on 07/27/2012 at 10:34 PM, John Gilmore <jwgli...@gmail.com> said:
>Paul Gilmartin is almost right. Both the reader and the punch >read and punched what they were presented with. What is that supposed to mean? Bit 2 of the CCW opcode selected whether to read/punch EBCDIC or column binary. >Sometimes it was BCD. Not on any S/360 unit-record device. >Sometimes it was EBCDIC. Under programmer control. >Sometimes, e.g., for object modules, it was 'column binary'. No S/360 operating system used column binary for object decks. I don't recall whether SOS, FMS and IBSYS used column binary or row binary on the earlier 704, 709, 704x and 709x. >Hard as it may be to do so, let's also try to avoid 'punch card', >using 'punched card' instead. Why? It is a card that you can punch holes in, but it is not punched when you initially take it out of the box. -- Shmuel (Seymour J.) Metz, SysProg and JOAT Atid/2 <http://patriot.net/~shmuel> We don't care. We don't have to care, we're Congress. (S877: The Shut up and Eat Your spam act of 2003) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN