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Article #623413Re: Any implementations of JOSS?
From: Peter Flass
Date: Tue, 01 May 2018 23:15
Date: Tue, 01 May 2018 23:15
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John Levine <jo...@taugh.com> wrote: > While tidying up my bookshelf I found an old copy of > "Time-Shared Computer Languages" which discussed a bunch > of languages available on-line in 1973. > > One of them was JOSS, first implemented on the vacuum tube Johnniac, > then reimplemented on the PDP-6, and available on the PDP-10 where DEC > called it AID. A cut down version was available on the PDP-8 as > FOCAL. Didn't know the relationship, thanks. > I think it had a lot of influence on Basic, both in that > program lines were numbered and statements started with keywords like > Let. The numerically inclined admired its correctly rounded ten digit > decimal arithmetic, so sqrt(3)*sqrt(3) was 3, not 2.9999999999996. > > Are there any versions of JOSS still around? I suppose I could fire > up a PDP-10 simulator and look for a copy of AID but I was hoping for > something less retro. > PDP-10 also had CPL (I believe it was called), a conversational version of PL/I. I'd like to see that also. I think one of the systems at the LCM has it, don't know if they have source, but I haven't had time to re-learn enough TOPS-10 or TOPS-20 to check it out. -- Pete
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