19 Sep
2015
19 Sep
'15
8:02 a.m.
On 19/09/2015 14:03, Paul Koning wrote:
Its a while back but I seem to remember in BASIC you replaced a set of
line numbers with another of the same range but different code.
Rod
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On Sep 19,
2015, at 5:25 AM, Rod Smallwood <rodsmallwood52 at btinternet.com> wrote:
Is an overlay self modifyig code?
Yes (#2 in my list), but a controlled kind so it
doesn't suffer from the maintainability issues of explicitly modified instructions.
But it does require I-cache management, if the computer has an I-cache. Not all that
likely; a machine small enough that overlays are valuable isn't all that likely to
have an I-cache.
paul