PDP-11 tape question

Nigel Johnson nw.johnson at ieee.org
Wed Jun 24 16:19:40 CDT 2020

Sometimes I had only lunch hour to do PMs, and one office worker always 
ate into my time because she had to 'finish something'.

Pretty soon I found that <esc> [ 2 ; 9 y would put all ANSI terminals 
into continuous self-test, and that solved the problem:-)

Those were the days!



On 24/06/2020 17:12, Chuck Guzis via cctalk wrote:
> On 6/24/20 1:23 PM, Jon Elson via cctalk wrote:
>> The 1052 Selectric console on the 360's were not on a channel, but
>> driven via direct I/O directly from the CPU microcode.  (Yes, the
>> console has a pseudo channel address that made you THINK it was on a
>> channel, but it actually wasn't.)
> One prank to pull on an operator was to write a CCW chain to ring the
> 1052 bell and then to a TIC back to the bell ring CCW.
> At least on DOS/360, pretty much impossible to kill without doing an
> IPL, as the keyboard would be locked.
> Fun from my younger days.
> --Chuck
Nigel Johnson, Sc., MIEEE, VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype:  TILBURY2591 nw.johnson at ieee.org

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