From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Schwab Subject: Re: Atari TT (next) Date: Sun, 08 Jan 2012 10:35:04 +0100 Message-ID: References: <4F079F6B.8080502@fairlite.co.uk> <4F07EA66.6020603@gmail.com> <4F08E748.4020305@fairlite.co.uk> <4F0917E9.9090600@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from mail-out.m-online.net ([212.18.0.9]:57577 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751512Ab2AHJfJ (ORCPT ); Sun, 8 Jan 2012 04:35:09 -0500 In-Reply-To: <4F0917E9.9090600@gmail.com> (Michael Schmitz's message of "Sun, 08 Jan 2012 17:13:29 +1300") Sender: linux-m68k-owner@vger.kernel.org List-Id: linux-m68k@vger.kernel.org To: Michael Schmitz Cc: Alan Hourihane , Linux/m68k , Geert Uytterhoeven Michael Schmitz writes: > Come to think of it - does the TT video chipset actually require screen > memory to reside in ST-RAM? Yes. Only the SCSI-DMA and SCC-DMA chips can address TT-RAM. > That's what I meant - the kernel residing in TT-RAM automatically will map > this chunk at kernel virtual address 0x0. Something in our mem_init logic > prevents using RAM with a lower physical address than was used by the > first chunk. I'm quoting from memory here - Roman Zippel might know the > exact answer to this. If the kernel resides in TT-RAM all of ST-RAM is supposed to be used by stram_alloc. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."