Re: SD: Let me propose something then...
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Re: SD: Let me propose something then...
Making it impossible not to corrupt memory is going to be very hard when no
buld in support for that kind of a function is not build in ot the CPU. On
the TI85 you would have to check all instructions before they where
executed, which is going to make everything extremely slow. If it was
possible to do this kind of a thing it would be a great feature in a shell
though as many of the problems with badly written programs could be avoided.
Making multitaksing work would really require a new language, but you would
nned some speical functions in your shell which the program could call to
take advantage of the multitasking feature. Making it easier to access the
ROM is hard to, a lot of people have thought about this, and no one seems to
have a better solution than the one currently used. You have to consider the
differences between ROM version, which makes this kind of thing hard to
implement.
Dines
----- Original Message -----
From: <Farid76@aol.com>
To: <shell-developers@lists.ticalc.org>
Sent: 3. januar 2000 20:02
Subject: Re: SD: Let me propose something then...
>
> > This kind of program has been suggested before, but it does have some
mayor
> > problems. To efficiently implement a program like the ones you
suggested,
> > one would need to know where all the basic functions are located in the
> ROM,
> > and how they are called. Finding this out could be done be examining
the
> > tokens used in BASIC program and the function which runs BASIC programs
on
> > the calc. This would increse the size of BASIC programs quite a bit,
but it
> > would increase the speed of them. If the goal of doing this to make it
> > easier to make games and other programs like that which needs the speed
of
> > asm, it would probably be a better solution to make a new language than
to
> > improve BASIC.
> >
> > Dines
>
> I'm working on a new shell for the 85, and since it will have multitasking
> management, I have to make a new language. It will looks like asm with
some
> special features to prevent memory corruption and to make access to ROM
> easier for all versions or ROM.
>
> So, I would like to know what features not in asm are needed to make
programs
> easier to write.
>
> Farid Bouzaghti
>
References: