Article View: comp.sys.atari.st
Article #27700Re: How can I access lower ram?
From: Gert Poletiek
Date: Wed, 22 Jul 1987 07:47
Date: Wed, 22 Jul 1987 07:47
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In article <580@ritcv.UUCP> mdr7527@ritcv.UUCP (PUT YOUR NAME HERE) writes: >Can anyone tell me how I can use lower RAM area using Malloc or something >similar. Apparently the lower 120K can not be gotten to easily because >TOS uses that address range even if it is in ROM. Is this correct? > > Thanks for any help. > Mark You might be able to imagine that an operating system needs some data space to do its work. In the lower 120K of memory are data spaces for the BIOS, XBIOS, GemDos, VDI and AES. Malloc is a bit simple minded on the ST, but at least it does not allow you to tamper with those 120K. And unless you are writing your own operating system you should keep your hands off every part of those 120K except for the documented system variables. Gert Poletiek
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!seismo!mcvax!nikhefh!gert From: gert@nikhefh.UUCP (Gert Poletiek) Newsgroups: comp.sys.atari.st Subject: Re: How can I access lower ram? Message-ID: <378@nikhefh.UUCP> Date: Wed, 22-Jul-87 03:47:35 EDT Article-I.D.: nikhefh.378 Posted: Wed Jul 22 03:47:35 1987 Date-Received: Fri, 24-Jul-87 03:12:20 EDT References: <8707131441.AA08574@ucbvax.Berkeley.EDU> <2019@oliveb.UUCP> <210@xrxns.UUCP> <580@ritcv.UUCP> Reply-To: gert@nikhefh.UUCP (Gert Poletiek) Organization: Nikhef-H, Amsterdam (the Netherlands). Lines: 17