Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!willett!dwp
From: dwp@willett.UUCP (Doug Philips)
Newsgroups: comp.lang.forth
Subject: PYGMY implementation question.
Message-ID: <430.UUL1.3#5129@willett.UUCP>
Date: 9 Feb 90 04:06:00 GMT
Organization: Latest link in the ForthNet chain.  (Pgh, PA)
Lines: 24


To anyone that's hacked PYGMY:

I'm playing about with using 'DOS' and 'DOS2'.  In particular,
I'm writing words to interface to the handle-based file I/O.
It seems from my sporadic perusal of the sources that PYGMY keeps DS==CS.
What I want to know is if I change DS for the duration of a DOS call
then change it back again before doing NXT, will anything EVIL happen?
It looks like DS is diddled in the V@ V! (video memory fetch/store CODE),
but those aren't CODE words that do INT's, let alone INT 21's.

(I want to change DS so that I can use the DOS INT 21 calls to read/write
from files into alternate segments).

	Thanks in advance,

			Doug

P.S.  If this is answered somewhere in the pygmy docs, please let me know
	where (which file/screen).

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