OS Theme - To create reliable multitasking, change the Z80 itself...

 And the last thing I would like to do
in today's "Topic>OS<" - this is to illuminate
a letter that came from someone Skyther,
who was very interested in our stormy
section. Let's give him the floor:           
                                        
 S: "...The discussion prompted me to write to you
regarding the axis for the speck. Y me (naturally-
indeed) slightly different views on the solution
this problem.  To create a reliable
multitasking, I believe, without interference
You can't get by with iron. Therefore
I suggest changing the Z80 itself... But not to
his descendant... I proposeEMULIRATED
BATit using some kind of micro-
controller (the same AVR or PIC, although
I think the power is only enough for something
simple).  This, IMHO, will allow you to achieve
greater compatibility and opportunity
can be increased gradually - just re-
I reflashed the controller and that's it. So it is possible
FPU  built-in to do. Possibilities
there are more and more controllers, even
disgusting - there are almost none of them in BASIC already
program :) (there is actually a kit,programmable in BASIC - STUFF from
microchip). So you can achieve the necessary
required performance. In the gland it is
can be made in the form of a board, inserted
mine instead of a regular processor. About replacement
128 ROM I won’t say - that’s how it is
everyone understood :). You can ROM not change, but
then you have to load the axis from the disk, which
For example, I don’t really like it. B ROM,
Of course GUI it’s difficult to sew up, but switching
the task is quite realistic. Multitasking-
ity will naturally entail
need for increased memory capacity,
512K-1M, I think it will be enough if,
of course  Black Raven a couple of times
do not run..."                       
                                        
 DWT: I am, of course, not an expert in
areas of iron, but, it seems to me, about
emulate  Z80 in the best possible way
only he can Z80... Yes, and implementation
such a serious technical innovationprovides for the launch of production of these
the most "handkerchief".  And this is already serious, right?
How will who do this?  How do I
it seems we need to think more about
how to replace the old hardware, so
as it is certain that the majority of the spectrum
muctob "sits" on old stuff that doesn't
less than 3-4 years (for example, my poor
The Pentagon is already in its 11th year!). But
There is nothing to replace this hardware with! Project
new Pentagon has already died out (responses to
our repeated letters are still missing
por), KAU - prices are simply utopian,
Sprinter - also fabulous prices (and
It's not Spectrum anymore). There is still hope left
waiting - on WildSpec,  about which you can read more
in this issue, but this is no longer the same
family Spectrum, although the idea is simply about
fueled by total spektrumizm :)... But I
got off topic: introduction of new hardware
provides at least three necessary
dim operator: MANUFACTURER (of which
there are no more left except Nemo), SELLER
(most often the manufacturer and seller -
one person) and CONSUMER. In this case, produces
the manufacturer-seller  must ensure
supportconsumer,so as not to work
waste time.  Aspectrum consumer
mist is often a poor person,
who of course wants something hobehbko-
ok, but I’m not willing to pay money for it
a lot.  Therefore, to the position
introduction of new iron technologies
it is necessary to take a more balanced and fundamental approach
specifically.  I also advise you to read the article in
today's issue"AS Project",in which
swarm describes a possible method "cnace-
"... And as a result of everything
of the above: you need to write OS so that
what really exists and works, and not
today's issue "AC Project",in which
swarm describes a possible method "cnace-
"... And as a result of everything
of the above: you need to write OS so that
what really exists and works, and not
"customize" the hardware to the programs.       
                                        
 - - -                  
                                        
 The next portion is over
discussions.  In my opinion, today's articles
introduced some imbalance into what already seemed
would be a well-built concept... Although, of course,
Actually, most of the amendments were made by Vita-
min,which made me think about
the fact that “is it true that the use of repressed
multitasking is so unfulfilling
my dream?"..                          
                                        
 Result?..                              
 There is only one result - the topic remains open...