First Indirect Addressing?

From: Phil Budne <phil_at_ultimate.com>
Date: Wed Oct 2 20:08:50 2002

>From: "Andy Holt" <andyh_at_andyh-rayleigh.freeserve.co.uk>

> IBM704 (mid '50s) didn't

The IBM709, which succeeded the 704 did;

  http://www.columbia.edu/acis/history/grosch.html

   The 709 succeeded the 704, adding overlapped i/o, indirect
   addressing, and decimal instructions. The 7090 was a 709 with
   transistor, rather than vacuum-tube, logic.

  http://www-1.ibm.com/ibm/history/reference/glossary_7.html

        The IBM 709 Data Processing System was introduced in January 1957.

> PDP8 (?) did

The first DEC computer, the PDP-1 (designed 1959) did as well.

http://www.utc.edu/~jdumas/cs460/vonnarch.htm
mentions the 709 and no others.
Received on Wed Oct 02 2002 - 20:08:50 BST