[TUHS] RIP John Backus

Paul McJones paul at mcjones.org
Sun Mar 18 03:49:31 AEST 2018


On 3/17/2018 8:54 AM, Dave Horsfall <dave at horsfall.org> wrote:

> ...  Was it the 704, or the 709?  I recall that the
> array indexing order mapped directly into its index register or something
> ...

It first ran on the IBM 704, whose index registers subtracted (as did 
the follow-on 709, 7090, etc), so array indexing went from higher memory 
addresses to lower.

> The bookshelf: I had most of those books once; what's the one on the
> bottom right?  It has a "paperback" look about it, but I can't quite make
> it out because of the reflection on the spine.

I'm not sure, and things have shifted since then on the shelves, but I 
sent the original photo to your email address.


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