Path: utzoo!utgpu!attcan!uunet!husc6!cmcl2!rutgers!att!ihlpl!knudsen
From: knudsen@ihlpl.ATT.COM (Knudsen)
Newsgroups: comp.sys.m6809
Subject: Re: TOP project files
Summary: Maybe...
Keywords: COCO OS9
Message-ID: <7238@ihlpl.ATT.COM>
Date: 17 Oct 88 15:43:24 GMT
References: <1558@cbnews.ATT.COM>
Distribution: na
Organization: AT&T Bell Laboratories - Naperville, Illinois
Lines: 27

In article <1558@cbnews.ATT.COM>, mdk@cbnews.ATT.COM (Shadow) writes:
> If you have seen some of the files that were just posted to comp.os.os9
> from the TOP project in Germany, do you think that there are any commands
> that could be adapted for use on OS9/6809?  Some of the files that I saw
> were rename, ttyname, umask, hostname, mdir, info, crypt, etc.  I haven't
> looked at the code very closely, but do you think that it could be ported?

I haven't looked, but to go from OS/K to OS9 the things to look for are:

(1) If the source is in C, it's a lot less work than if assembly!

(2) Look for system calls of OSK that OS9 lacks.
Also for common calls, fix the argument passing conventions.

(3) If C source, watch out for machine-dependent things like
32-bit integers and sign extensions and >1 register variable
[none of these stop you from porting, but must be checked for
 when you're really doing it]

(4) Memory requirements -- a 68000 can address 16 Megs of RAM,
against 64K for 6809.  Some mighty BIG programs turn up under OSK.
I don't think any of the TOPS utilities listed above would be
very big though, even by 6809 standards.
-- 
Mike Knudsen  Bell Labs(AT&T)   att!ihlpl!knudsen
"Lawyers are like handguns and nuclear bombs.  Nobody likes them,
but the other guy's got one, so I better get one too."