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Aucbvax.4895 fa.editor-p utzoo!decvax!ucbvax!editor-people Sun Nov 1 23:11:10 1981 Re: Small Address Space >From Craig.Everhart@CMU-10A Sun Nov 1 23:01:49 1981 You're suggesting that it's the smallness of the physical address space that's a problem. Only operationally, I reply. The programming problem is the small virtual address space, for holding program and data both. It's good to avoid having to interpret every reference, where the memory address is large and the hardware-provided addresses are themselves small.

This was one of the principal problems with programming Hydra; it's isomorphic to the 11-90 problem RMS mentions. It's unfortunate for the programmer to have to worry about interpretation of wide addresses at each step of the program. Interpreters that provide a wide-addressed virtual machine are cute but slow.

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