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From: cabbie@chinet.UUCP (Richard Andrews)
Newsgroups: net.micro.atari8
Subject: Re: writing DOS files
Message-ID: <715@chinet.UUCP>
Date: Sat, 1-Nov-86 19:46:38 EST
Article-I.D.: chinet.715
Posted: Sat Nov  1 19:46:38 1986
Date-Received: Mon, 3-Nov-86 23:52:00 EST
References: <8610292210.AA04854@chance.mitre.org> <8610292217.AA02663@mitre-bedford.ARPA>
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Reply-To: cabbie@chinet.UUCP (Richard Andrews)
Organization: chi-net, Public Access UN*X, Chicago IL
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In article <8610292217.AA02663@mitre-bedford.ARPA> jhs@MITRE-BEDFORD.ARPA writes:
>OOPS, I guess my question could be misinterpreted.  I want to cause DOS to
>write out a copy of DOS.SYS and a copy of DUP.SYS, which it will do only with
>the H command.  But I want to do it under the control of an assembly language
>program.  I have the DOS 2.0S source listing and a disassembly listing of
>DUP.SYS starting from the entry point of record for the H command, but I have
>been unable to figure out how to make it all work.
>
>Inside Atari DOS gives this listing for a routine called WRTDOS, which seems
>to do the deed, but it doesn't do it for me if I JSR to the advertised
>address.  I wonder if I have to do an OPEN or something, as it says in the
>fine print "the CLOSE writes the final sector...".
>
>The reason for all this is to set up DOS files on a newly-installed RAMdisk.
>DOS won't let me just copy the DOS files over because it knows that the boot
>sector would be wrong.
>
>-John S.

Well John as far as writing out DOS.SYS to a disk, all you have to do is
to open a channel for output with the file spec Dn:DOS.SYS where n is the
drive number you want to write dos.sys to.  To write out DUP.SYS this is
a little trickier because DUP.SYS is not a resident program.  The easiest
way to look at DUP.SYS is that it is a stand alone binary file.  What I 
would do is to execute a simple file copy from D1:DUP.SYS to Dn:DUP.SYS.
You may want to use a different ramdisk routine.  I have one that has
been out for a while.  BTW does anyone want the memory upgrade instructions
for the 130xe?  I published some a while back utilizing both 64k and 256k
ram chips.


					Rich Andrews
					...ihnp4!chinet!cabbie