In
<CAE1XxDH=2+e+p2ag55ykgtwlc+ttbptqvrzv8iunhoaxpzg...@mail.gmail.com>,
on 07/27/2012
at 10:34 PM, John Gilmore <[email protected]> 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 [email protected] with the message: INFO IBM-MAIN
