Roger Harman wrote:
Google & the IBM Info Center are your friends....
What Larry said. The VERY FIRST thing I did was a Google search on a
variant of what you proposed, and my results were precisely as Larry
1) Set the system mode to Manual
- Up arrow to 2, then Enter
- Up arrow to A, B, or D with M
- Enter until back to 02.
2) Press the Power (White) button until I saw 0?
3) Release and then press the Power button again to confirm that I wand the power off.
On an E4A, the LIC load source (A/B/C/D), the mode (M/N), and the
P/non-P IPL all cycle separately. And I was frantically trying to cycle
the mode to manual, but between the dim light, the tiny LCD, and my
increasingly presbyopic eyes, I couldn't tell that the mode was cycling
between "N" and "M." I went back to the front panel this morning, and
tried cycling the mode again, and even with decent light, it took me
several cycles before I could see that it was in fact cycling between M
And Rob, NO, NEITHER of the two Linux boxes in the room, NOR the WinDoze
box, are HMCs. They're all servers. And yes, shutting down everything
that could open a terminal session on the E4A was an incredibly stupid
thing for me to do; it was in the heat of shedding battery load. And no,
Rob, I've personally only even USED a Keypunch or a card reader a few
times, when I had a summer job at my old high school, during a brief
period when they had a local timeshare system (McGill University MUSIC 4
running on a 4341, with no capability for submitting batch jobs [or
otherwise accessing the line printer] from a terminal). The last time I
even SAW Hollerith card equipment in use was at the Computer History
Museum, on my Spring vacation, when I made an extra trip from San
Francisco to Mountain View just to see a demonstration of their restored
1401. And I don't think I've ever even seen a plugboard for a
plugboard-programmable unit record machine, much less wired one.
We did have the UPS cabled to the UPS monitoring port in the past.
Unfortunately, that caused a few problems of its own.