On 07.08.2022 19:48, David W. Hodgins wrote:

133 characters were sent to the printer. The first byte was not
printed. A blank in that character was for single spacing, 0 for
double spacing, 1 for page advance, and + for write without advancing
for highlighting or underlining, using the standard page ribbon.

I faintly recall that we had two printer-channels/queues, if we've
sent to the "raw" one the application data in character column 1
had triggered printer control operations like the ones you wrote.
It gave fancy "output" e.g. in form of many many empty pages - a
very fast way to produce toilet paper. The speed was amazing.

Janis

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"David W. Hodgins" <[email protected]> writes:

On Sun, 07 Aug 2022 22:25:38 -0400, Janis Papanagnou <[email protected]> wrote:

I faintly recall that we had two printer-channels/queues, if we've
sent to the "raw" one the application data in character column 1
had triggered printer control operations like the ones you wrote.
It gave fancy "output" e.g. in form of many many empty pages - a
very fast way to produce toilet paper. The speed was amazing.

I remember similar pranks. Putting a 2 in the fba, which since the tape didn't
have a hole in column 2 would dump out the box of fan fold paper. Really annoyed whoever was operator at the time it ran, especially if they'd just put in a new box.

My first programming instructor demonstrated the printer trying to empty
a box of paper in seconds. Then he told us, "that is why all carriage
control tapes must have _all_ channels punched".

--
Dan Espen

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On Sun, 07 Aug 2022 22:25:38 -0400, Janis Papanagnou <[email protected]> wrote:

I faintly recall that we had two printer-channels/queues, if we've
sent to the "raw" one the application data in character column 1
had triggered printer control operations like the ones you wrote.
It gave fancy "output" e.g. in form of many many empty pages - a
very fast way to produce toilet paper. The speed was amazing.

I remember similar pranks. Putting a 2 in the fba, which since the tape didn't have a hole in column 2 would dump out the box of fan fold paper. Really annoyed whoever was operator at the time it ran, especially if they'd just
put in a new box.

Regards, Dave Hodgins

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