How do RAM disks work? Anybody wanna post some source?

Article View: comp.sys.atari.st

Article #28637

#28637

From: Carl Weidling
Date: Fri, 09 Oct 1987 18:18

14 lines
1179 bytes

	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

Technical Details

Message-ID: <1177@vaxwaller.UUCP>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!rutgers!sri-spam!mordor!lll-tis!ptsfa!varian!vaxwaller!cw

Show Full Headers

Complete Article Headers

Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!rutgers!sri-spam!mordor!lll-tis!ptsfa!varian!vaxwaller!cw
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