Re: Softclock (was Re: Having a clock without a clock card)

[Steve.Leahy@anu.edu.au (Steve Leahy)]

In article <Steve.Leahy-2108950949530001@della.anu.edu.au>,
Steve.Leahy@anu.edu.au (Steve Leahy) wrote:

> >  Where does it load into
> > memory?  There is no spare space within ProDOS, except parts of the
> > second language card bank (and they are used by some programs).
> 
> That's a good question; I don't know offhand, but I'll have a look. I have
> a vague memory that it puts itself just below ProDOS, and then modifies
> the memory map to protect itself, but don't take that as gospel... 

I had a look; I don't know where I got those ideas from, they aren't
supported by any of the (admittedly minimal) documentation I have for
SoftClock. All I can say is I've never encountered a problem with it.

Apparently, SoftClock originally appeared in the April 1989 issue of Nibble
magazine; the version I have has been modified to "allow it to work with
large applications".  I've posted a copy to comp.binaries.apple2 for those
interested.

-- 
Steve Leahy (Steve.Leahy@anu.edu.au)
Dept. Geography, ANU 0200 Australia    

Plot hole, n:  A device which allows an author to avoid
the difficult task of writing coherently...