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From: cw@vaxwaller.UUCP (Carl Weidling)
Newsgroups: comp.sys.atari.st
Subject: How do RAM disks work? Anybody wanna post some source?
Message-ID: <1177@vaxwaller.UUCP>
Date: Fri, 9-Oct-87 14:18:18 EDT
Article-I.D.: vaxwalle.1177
Posted: Fri Oct  9 14:18:18 1987
Date-Received: Mon, 12-Oct-87 01:32:26 EDT
Organization: Varian Instruments, Walnut Creek CA
Lines: 14


	I don't have a developer's kit.  I do have Mark Williams C.
I presume that a RAM disk works by intercepting calls for file services
in the OS, but I haven't uncovered documentation to explain where or
how.
	Could somebody explain how it's done, and maybe include source
for a RAM disk.  The famous eternal ram disk is not supposed to work with
the new ROMS, also, I've heard there are limits to the size of a lot
of RAM disks (somebody at a show muttered something about them using
12 bit FATs instead of 16 bit FATs or something) so that you cannot
have a 2 meg RAM disk for instance.
	Any info would be appreciated.
Regards,
Carl Weidling