🚀 go-pugleaf

In article <1990Dec30.041551.4685@micor.OCUnix.On.Ca> gwaigh@micor.OCUnix.On.Ca (Geoffrey Waigh) writes:
>This may not apply to you, but if you try writing to disk with a DOS call
>(which is the easy way to access the file system) in the background, it will
>not behave.  DOS is extremely non-rentrant (sp?) and does not like people 
>trying to do two things at once.  You will have to do something to be sure
>that DOS is not doing it's thing when you want to flush your buffer.  I would
>guess that grabbing INT 21 (ugh :-() may help but some Guru here may know a
>better kludge.
>
	No guru here, but I would suggest reading the sections on the InDOS
flag and the Critical Error flag, as well as on the "DOS Idle" interrupt,
Int28h, in a good DOS programmer's reference. I like:

	DOS Programmer's Reference, 2nd Edition
	by Terry Dettmann (w/ 2nd Ed. revisions by Jim Kyle)
	Published by QUE (C) 1989
	ISBN:0-88022-458-4

The recommended topics will help you stay out of DOS's way as far as
re-entrancy is concerned (no mean feat!).

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