Harvard vs. vonNeuman

[Ethan Dicks]

On Sat, Feb 11, 2006 at 11:39:25PM -0500, Sean 'Captain Napalm' Conner wrote:
>   Okay, figured out why my code didn't work, and it's not due to writing to
> the wrong location (although I suspect that still is a problem) but that
> under Unix the code pages are marked read-only so of course it core dumped.
> 
>   -spc (Another reason why self-modifying code is hard to do in C 8-P

But there are C compilers for the 68000, 6502, etc., for OSes that do _not_
require an MMU or other enforcement hardware (like AmigaDOS), let alone for
standalone programs for embedded environments (we had a C compiler for the
68000 for our COMBOARDs - 100% of the code was our own - no OS).

Some variant of your technique would work in any of those environments; the
'restriction' in this case is a UNIX one, not a C one.

-ethan

-- 
Ethan Dicks, A-130-S      Current South Pole Weather at 29-Sep-2004 03:50 Z
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Ethan.Dicks at amanda.spole.gov     http://penguincentral.com/penguincentral.html