[GreenKeys] Model 15 without blank key

Harold Hallikainen harold at w6iwi.org
Sun Nov 21 00:28:47 EST 2021



On Sat, November 20, 2021 9:59 pm, Mike Douglas via GreenKeys wrote:
> For the ASCII <=> Baudot conversion aspect of the loop interface I‘ve
> made, I need a good way to type several ASCII characters that aren’t on
> the Model 15 keyboard, yet are used frequently with old computers, like =
> +  *  <  >  ^ BS, DEL, ESC, ctrl-c, etc.  I’ve found the blank key works
> well to start a keyboard escape sequence and wondered how standard that
> solution could be (e.g., blank-E for equals, blank-P for plus, etc.).
>
> Mike


Interesting approach. Kinda like the escape key sequences used for cursor
positioning and other functions on ASCII terminals like the Lear Siegler
ADM-1 I used many years ago.

I guess you'd have to make sure that the blank was not preceded by a blank
or the punched tape leader would cause something interesting on the first
character in a tape. Seems like this could also be done with a unique FIGS
LTRS sequence. We could have the equivalent of Baudot UTF-8 to encode
Unicode into Baudot!

Harold



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