Data in text segment (was: Re: Problem with xstr)

[The Beach Bum]

In article <159 at taux02.UUCP> amos at taux02.UUCP (Amos Shapir) writes:
>Thanks to all people who corrected my mistake - separate I/D pdp11 cannot
>support text-segment shared data. It's been a long time since I hacked
>a pdp11 :-(

most modern CPU's can support separate I&D space in some sense by way
of protection bits, etc. in the MMU.  i think Zilog Z8000's support it
more or less directly, like the PDP-11's did.  the rest of the world
has EXECUTE bits in the MMU which (may or may not) inhibit data cycles
to text segments.
-- 
John F. Haugh II (jfh at rpp386.Dallas.TX.US)                   HASA, "S" Division

      "Why waste negative entropy on comments, when you could use the same
                   entropy to create bugs instead?" -- Steve Elias