Self modifying code, lambda calculus - Re: ENIAC programming

[Liam Proven]

On 20 September 2015 at 13:54, Peter Coghlan <cctalk at beyondthepale.ie> wrote:
> BBC BASIC (when running on a BBC Micro at least) does clear (most) variables
> when a program is loaded.  Most variables are stored in memory above the
> program and if a small program was replaced by a larger program, some could get
> overwritten.  Acorn may have decided that it was too much trouble to figure out
> whether or which variables might be affected and that it was easier to be safe
> by clearing them every time a program is loaded.
>
> BBC BASIC (on a BBC Micro) doesn't have a MERGE command or equivelant either
> but it is possible to merge programs together using slight hackery.  However,
> once BASIC is made aware of the change, it will clear the variables so a
> certain level of deviousness is required to do stuff like overlays.


Hmmm. I'm now wondering if the command was CHAIN not LOAD...



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