[Coco] BASIC09 - How good is it?

[Gene Heskett]

On Tuesday 14 May 2013 15:46:13 Luis Antoniosi (CoCoDemus) did opine:

> How to use mmu under os9 ?
> 
Level 2 buries that stuff in the alloc and friends functions.  That is how 
MyRam works at up to as much free memory there is in my 2 meg machine.  You 
don't see it, the OS takes care of it.

> On Tue, May 14, 2013 at 3:29 PM, Gene Heskett <gheskett at wdtv.com> wrote:
> > On Tuesday 14 May 2013 15:26:22 Luis Antoniosi (CoCoDemus) did opine:
> > > > Which needs one more, a CTRL+U to undo what you just did, in case
> > > > that wasn't what you wanted to do.  Say 5 levels deep if memory
> > > > can be found to save that much data.
> > > 
> > > Undoing is not that simple when you can remove or duplicate entire
> > > lines. If you look a text editor on PC it just save a full text
> > > instance for each undo, what is not possible in the short coco's
> > > memory.
> > > 
> > > So for each action I should be able to undo-it , gets complicated
> > > when lines are split or merged. It's not a $0D character in the
> > > middle we are talking about but two separated double linked string
> > > lists that are merged and possibly relocated somewhere else in the
> > > memory. Also deleted lines should be kept for a while lingering
> > > somewhere, what increases a lot the complexity.
> > 
> > All very true given the coco's 64k memory mapping, but another 8k
> > block is only two lines of code away in the 3's.  One to allocate,
> > one to deallocate at quitting time.  Making use of it would probably
> > be another 100 lines of code though.
> > 
> > > --
> > > Coco mailing list
> > > Coco at maltedmedia.com
> > > http://five.pairlist.net/mailman/listinfo/coco
> > 
> > Cheers, Gene
> > --
> > 
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > 
> > -Ed Howdershelt (Author)
> > My web page: <http://coyoteden.dyndns-free.com:85/gene> is up!
> > My views
> > <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml>
> > The fashion wears out more apparel than the man.
> > 
> >                 -- William Shakespeare, "Much Ado About Nothing"
> > 
> > A pen in the hand of this president is far more
> > dangerous than 200 million guns in the hands of
> > 
> >          law-abiding citizens.
> > 
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco


Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: <http://coyoteden.dyndns-free.com:85/gene> is up!
My views 
<http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml>
Somebody ought to cross ball point pens with coat hangers so that the
pens will multiply instead of disappear.
A pen in the hand of this president is far more
dangerous than 200 million guns in the hands of
         law-abiding citizens.