@me Well, it’s a PDP-6/-10 HALT instruction (a variation on the JRST branch instruction), but I don’t know the significance of the 18 bit address field (277616).
The original XKL logo had an address field which was the SIXBIT for WA<space>. After a reorg and name change, I redid the logo to have an address that decoded to LLC .
The HALT instruction physically stops the CPU; when the start switch is depressed, execution continues at the target address. The original business plan for cisco Systems was to build a PDP-10 clone; the XKL logo meant “HALT and continue in Washington”. The revised logo meant “HALT and continue as an LLC”.
@me every time I hear/see TOPS-20 I recall something that I read where RMS says that he didn't think TOPS-20 was so tops 😆 I have no opinion either about the OS, as I've barely used it, but it's funny what sticks in your mind.
Parade du Grotesque 💀
in reply to SDF.ORG • • •I want this on a T-Shirt!!!
Pretty please?
scm
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Jonathan Lamothe
in reply to Jonathan Lamothe • •Rich Alderson
in reply to Jonathan Lamothe • • •@me Well, it’s a PDP-6/-10 HALT instruction (a variation on the JRST branch instruction), but I don’t know the significance of the 18 bit address field (277616).
The original XKL logo had an address field which was the SIXBIT for WA<space>. After a reorg and name change, I redid the logo to have an address that decoded to LLC .
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Rich Alderson
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SDF.ORG
in reply to Rich Alderson • • •@alderson
What is the history with the black and white logo? Is that after your time?
We can let JRST 4,,277616 stay a mystery for a little while longer, but not too much longer.
Rich Alderson
in reply to SDF.ORG • • •SDF.ORG
in reply to Rich Alderson • • •Rich Alderson
in reply to SDF.ORG • • •I see. I suggested the same thing when we digitized the original logotype done by a graphic designer, and got shot down.
That would have been 277432. 😁
Rich Alderson
in reply to Jonathan Lamothe • • •scm
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