Closeup of a keyboard showing the SP/0 key on the top row. Image credit: https://bugbookmuseum.blogspot.com/2016/03/vintage-computers-datapoint-2200.html

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   Bread80 (bread80@mstdn.social)'s status on Friday, 18-Apr-2025 01:15:43 JST Bread80

   I've been wondering what the 'SP' on the SP/0 key does on the #Datapoint2200 keyboard. Then I realised that the keyboard logic board returns ASCII so the secret will be in the schematics. And for most keys the logic just twiddles a single bit. So top row number keys convert to the one bit different ASCII characters.

   And what does '0' convert to? SPACE!! So SHIFT-0 returns a space character. I'm wondering if any other keyboards had this quirk?