Sv: A82: Re: Dines + the future of Ash (Update on Ash 4.0)
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Sv: A82: Re: Dines + the future of Ash (Update on Ash 4.0)
Can someone please tell how usgard relocation differs from ash relocation?
Stefan Sommer
By most known as Stefan The Greatest (Almost) Sommer
God created my kind - but he forgot to tell me why
----------
> Fra: Dines Christy Justesen <c958362@student.dtu.dk>
> Til: assembly-82@lists.ticalc.org
> Emne: Re: A82: Re: Dines + the future of Ash (Update on Ash 4.0)
> Dato: 23. december 1997 12:25
>
>
> Instead of moving the programs to a fixed location in memory, Usgard
> adjusts the addresses used in calls and jumps, to the correct addresses,
> based on the programs current position. This makes it possible to have
> more than one program relocated at one time. Besides that i also makes it
> possible to support TSRs in a way which mkes it easy for the programmer.
> And you can actually have relocated TSR programs.
>
> The reason that Usgard like relocation will give you fewer crashes is
that
> you do not move anything in the mem, you are just adding/subtracting an
> offset from certain parts of the instruction. If you turned off the calc
> in a programs which is relocated´, the shell can see this when it starts
> the program again and correct it.
>
> As i see it one of the main reasons for Usgard like relocation is that it
> makes TSR possible.
>
> Dines
> -----Original Message-----
> From: ADAMMAN106 <ADAMMAN106@aol.com>
> To: assembly-82@lists.ticalc.org <assembly-82@lists.ticalc.org>
> Date: 23. december 1997 00:39
> Subject: Re: A82: Re: Dines + the future of Ash (Update on Ash 4.0)
>
>
> >
> >In a message dated 97-12-22 18:21:32 EST, you write:
> >
> >> I am planning on including a TSR controller like the one found in
> Usgard,
> >> it is a really nice feature. The only problem with this is that it is
> only
> >> possible to do it if Usgard like relocation is used.
> >>
> >> Dines
> >
> >That's fine, though I don't know the details behind Usgard relocation.
> Maybe
> >you can explain it.
> >
> >~Adamman
> >
>
> _______________________________________
>
> Dines Justesen
> Email: dines@post1.com or
> c958362@student.dtu.dk
> WWW : http://www.gbar.dtu.dk/~c958362/
> _______________________________________