19 Oct
2011
19 Oct
'11
6:01 p.m.
From: Chuck Guzis
Sent: Tuesday, October 18, 2011 1:54 PM
On 18 Oct 2011 at 13:15, Rich Alderson wrote:
> When IBM wanted to port the IBM OS family to
POWER, they did the same
> thing. (Z, in your list above.)
Tangentially relevant...
I wonder how many S/360 machines spent their entire
operating life
running in 1401 or 7080 emulation mode?
Probably very few, if any. Speaking as someone who worked in a shop
that ran 1401 emulation as part of the general ledger processing, I can
state that no new code was written for the 1401 after 1969 or so, and
efforts were made to get as much as possible done on the 360, uh 370,
uh Amdahl 470, as possible. I was part of the group of programmers who
made the changeover to a new accounting system (commerical software
written for the 370 under SVS/MVS); my office mate had the job of doing
flowcharts for all of the 1401 programs still in use.[1]
1401 emulation worked, but it wasn't the only thing that got done on the
machine, in any shop I ever heard of.
[1] Her own fault: She went to our assistant manager one afternoon and
complained of not having enough to do. She finished the project 3
years later, shortly before I switched to the systems programming
staff.
Rich Alderson
Vintage Computing Sr. Server Engineer
Vulcan, Inc.
505 5th Avenue S, Suite 900
Seattle, WA 98104
mailto:RichA at vulcan.com
mailto:RichA at LivingComputerMuseum.org
http://www.LivingComputerMuseum.org/