Article View: comp.sys.atari.st
Article #32945Re: (none)
From: Hartmut Semken
Date: Thu, 23 Jun 1988 00:42
Date: Thu, 23 Jun 1988 00:42
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1075 bytes
In article <8806140047.AA18091@ucbvax.Berkeley.EDU> U0179@DGOGWDG5.BITNET ("GWDGV1::WHUEBNER") writes:
>Two questions about ST hardware:
>2) Does anyone know, how far the DMA chip can address in memory ?
I once wrote an adress immediatly after the 4 Megabytes to (physbase).
The system crashed.
The Shifter and DMA chips appear to "borrow" their adress counter from
the "MMU" chip; the registers seem to be 12 bit wide (right, Atari?)
hase
--
Hartmut Semken, Lupsteiner Weg 67, 1000 Berlin 37 hase@netmbx.UUCP
High on a rocky promontory sat an Electric Monk on a bored horse. (D. Adams)
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arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!oberon!bbn!uwmcsd1!marque!uunet!mcvax!unido!tub!tmpmbx!netmbx!haseReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!oberon!bbn!uwmcsd1!marque!uunet!mcvax!unido!tub!tmpmbx!netmbx!hase From: hase@netmbx.UUCP (Hartmut Semken) Newsgroups: comp.sys.atari.st Subject: Re: (none) Message-ID: <1968@netmbx.UUCP> Date: 23 Jun 88 00:42:37 GMT References: <8806140047.AA18091@ucbvax.Berkeley.EDU> Reply-To: hase@netmbx.UUCP (Hartmut Semken) Organization: netmbx Public Access Unix, Berlin Lines: 14