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CPM/68K vs TOS
| CPM/68K vs TOS [message #268823] |
Wed, 26 February 1986 19:37 |
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Originally posted by: I6191008
<pre>
Article-I.D.: ucbvax.8602270036.AA04885
Posted: Wed Feb 26 19:37:22 1986
Date-Received: Fri, 28-Feb-86 21:58:54 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 61
Terry-
Hmmm, looks like that we've got a problem here...
When the ST was presented to the public all testers told that it is
using an enhanced CPM/68k. They also told that the disks use the IBM
PC format. Actually it's the same, except 2 small differences. If you
add a 5" floppy to the ST you can transfer ONE file at a time (with
more you get problems with the file allocation table) from the PC to
the ST and vice versa. In the 'Hitchhikers Guide to the BIOS' and
in the documentation they compare their system quite much with MS-DOS
(sometimes to often). Actually it is very similar to MS-DOS (not only
Unix; like I told before). The subdirectories are handeled like in
MS-DOS. I never worked with CPM/68k but there was a time when I wanted
to build such a system (was too expensive), so I know at least some
facts about it. Unfortunately I don't have access to my documentations
right now... but I'll dig it out when there is need for it.
(Then I can post a comparison of the system calls.)
In general you push your desired function on the stack and call the
system. And this functions are different in both OS's as I know.
Next: You've got several system components: GEMDOS,BIOS,XBIOS,GEM and a
grafics kernel. GEMDOS is not GEM, it's more like BDOS in CP/M.
The XBIOS is an extension of the BIOS. The kernel supports the GEM (You
can use it without GEM if you like). Even without GEM the TOS doesn't
look like CPM/68k. Try to run an CPM program (of course from the TOS)
und you'll see what happens...several bombs...reset....:-)
The problem is that ATARI had the intention to use CPM (and told so)
but changed their mind later on. But several M-magazines are still
writing something about CPM68k on the ST. If they would have tried
to run an CPM program the would have known better.
Finally, I'm not the ultimate source for such informations, I know
some facts but not all...feel free to revise the above.
Johann Zuschlag (I6191008@DBSTU1.BITNET)
</pre>
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