Re: A86: Re: New operating system...
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Re: A86: Re: New operating system...
On Mon, 22 Feb 1999 09:41:17 PST "David West" <bdaddy_mit@hotmail.com>
writes:
>programmer simply am tired of having to skirt around. Particularly,
>this last 16Kbyte block that is located permanently at $c000.. the
>first ~5K is used by the system right? I mean I don't know all the
the first 1.7k ($d748-$c000) is used. still, that is a rather annoying
little chunk.
>"pages" of ram and then call this segment. Every time you load a
>program you are making an extra "unecessary" copy of it. If we want
you're also loading it into a predictable place in memory, which greatly
simplifies the programs. the only way you could do this without copying
is to make each segment start on a page boundry, which limits you to 6 or
7 segments
if you don't load it to a specific place, the program loader (whatever
runs the programs) would have to patch up every jp and call in the
program. well, i guess you could force the program itself to do that (i
think that's how zshell worked), but that makes it too slow.
it's possible to run programs up to ~30k without replacing the os. i've
written a nearly complete program loader for that.
-josh
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